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authorTimothy Pearson <[email protected]>2011-07-10 15:24:15 -0500
committerTimothy Pearson <[email protected]>2011-07-10 15:24:15 -0500
commitbd0f3345a938b35ce6a12f6150373b0955b8dd12 (patch)
tree7a520322212d48ebcb9fbe1087e7fca28b76185c /src/kernel/qevent.cpp
downloadqt3-bd0f3345a938b35ce6a12f6150373b0955b8dd12.tar.gz
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+/****************************************************************************
+**
+** Implementation of event classes
+**
+** Created : 931029
+**
+** Copyright (C) 1992-2008 Trolltech ASA. All rights reserved.
+**
+** This file is part of the kernel module of the Qt GUI Toolkit.
+**
+** This file may be used under the terms of the GNU General
+** Public License versions 2.0 or 3.0 as published by the Free
+** Software Foundation and appearing in the files LICENSE.GPL2
+** and LICENSE.GPL3 included in the packaging of this file.
+** Alternatively you may (at your option) use any later version
+** of the GNU General Public License if such license has been
+** publicly approved by Trolltech ASA (or its successors, if any)
+** and the KDE Free Qt Foundation.
+**
+** Please review the following information to ensure GNU General
+** Public Licensing requirements will be met:
+** http://trolltech.com/products/qt/licenses/licensing/opensource/.
+** If you are unsure which license is appropriate for your use, please
+** review the following information:
+** http://trolltech.com/products/qt/licenses/licensing/licensingoverview
+** or contact the sales department at [email protected].
+**
+** This file may be used under the terms of the Q Public License as
+** defined by Trolltech ASA and appearing in the file LICENSE.QPL
+** included in the packaging of this file. Licensees holding valid Qt
+** Commercial licenses may use this file in accordance with the Qt
+** Commercial License Agreement provided with the Software.
+**
+** This file is provided "AS IS" with NO WARRANTY OF ANY KIND,
+** INCLUDING THE WARRANTIES OF DESIGN, MERCHANTABILITY AND FITNESS FOR
+** A PARTICULAR PURPOSE. Trolltech reserves all rights not granted
+** herein.
+**
+**********************************************************************/
+
+#include "qevent.h"
+#include "qcursor.h"
+#include "qapplication.h"
+
+
+/*!
+ \class QEvent qevent.h
+ \brief The QEvent class is the base class of all
+ event classes. Event objects contain event parameters.
+
+ \ingroup events
+ \ingroup environment
+
+ Qt's main event loop (QApplication::exec()) fetches native window
+ system events from the event queue, translates them into QEvents
+ and sends the translated events to QObjects.
+
+ In general, events come from the underlying window system
+ (spontaneous() returns TRUE) but it is also possible to manually
+ send events using QApplication::sendEvent() and
+ QApplication::postEvent() (spontaneous() returns FALSE).
+
+ QObjects receive events by having their QObject::event() function
+ called. The function can be reimplemented in subclasses to
+ customize event handling and add additional event types;
+ QWidget::event() is a notable example. By default, events are
+ dispatched to event handlers like QObject::timerEvent() and
+ QWidget::mouseMoveEvent(). QObject::installEventFilter() allows an
+ object to intercept events destined for another object.
+
+ The basic QEvent contains only an event type parameter.
+ Subclasses of QEvent contain additional parameters that describe
+ the particular event.
+
+ \sa QObject::event() QObject::installEventFilter()
+ QWidget::event() QApplication::sendEvent()
+ QApplication::postEvent() QApplication::processEvents()
+*/
+
+
+/*!
+ \enum Qt::ButtonState
+
+ This enum type describes the state of the mouse and the modifier
+ buttons.
+
+ \value NoButton used when the button state does not refer to any
+ button (see QMouseEvent::button()).
+ \value LeftButton set if the left button is pressed, or if this
+ event refers to the left button. (The left button may be
+ the right button on left-handed mice.)
+ \value RightButton the right button.
+ \value MidButton the middle button.
+ \value ShiftButton a Shift key on the keyboard is also pressed.
+ \value ControlButton a Ctrl key on the keyboard is also pressed.
+ \value AltButton an Alt key on the keyboard is also pressed.
+ \value MetaButton a Meta key on the keyboard is also pressed.
+ \value Keypad a keypad button is pressed.
+ \value KeyButtonMask a mask for ShiftButton, ControlButton,
+ AltButton and MetaButton.
+ \value MouseButtonMask a mask for LeftButton, RightButton and MidButton.
+*/
+
+/*!
+ \enum QEvent::Type
+
+ This enum type defines the valid event types in Qt. The event
+ types and the specialized classes for each type are these:
+
+ \value None Not an event.
+ \value Accessibility Accessibility information is requested
+ \value Timer Regular timer events, \l{QTimerEvent}.
+ \value MouseButtonPress Mouse press, \l{QMouseEvent}.
+ \value MouseButtonRelease Mouse release, \l{QMouseEvent}.
+ \value MouseButtonDblClick Mouse press again, \l{QMouseEvent}.
+ \value MouseMove Mouse move, \l{QMouseEvent}.
+ \value KeyPress Key press (including Shift, for example), \l{QKeyEvent}.
+ \value KeyRelease Key release, \l{QKeyEvent}.
+ \value IMStart The start of input method composition, \l{QIMEvent}.
+ \value IMCompose Input method composition is taking place, \l{QIMEvent}.
+ \value IMEnd The end of input method composition, \l{QIMEvent}.
+ \value FocusIn Widget gains keyboard focus, \l{QFocusEvent}.
+ \value FocusOut Widget loses keyboard focus, \l{QFocusEvent}.
+ \value Enter Mouse enters widget's boundaries.
+ \value Leave Mouse leaves widget's boundaries.
+ \value Paint Screen update necessary, \l{QPaintEvent}.
+ \value Move Widget's position changed, \l{QMoveEvent}.
+ \value Resize Widget's size changed, \l{QResizeEvent}.
+ \value Show Widget was shown on screen, \l{QShowEvent}.
+ \value Hide Widget was hidden, \l{QHideEvent}.
+ \value ShowToParent A child widget has been shown.
+ \value HideToParent A child widget has been hidden.
+ \value Close Widget was closed (permanently), \l{QCloseEvent}.
+ \value ShowNormal Widget should be shown normally (obsolete).
+ \value ShowMaximized Widget should be shown maximized (obsolete).
+ \value ShowMinimized Widget should be shown minimized (obsolete).
+ \value ShowFullScreen Widget should be shown full-screen (obsolete).
+ \value ShowWindowRequest Widget's window should be shown (obsolete).
+ \value DeferredDelete The object will be deleted after it has
+ cleaned up.
+ \value Accel Key press in child for shortcut key handling, \l{QKeyEvent}.
+ \value Wheel Mouse wheel rolled, \l{QWheelEvent}.
+ \value ContextMenu Context popup menu, \l{QContextMenuEvent}
+ \value AccelOverride Key press in child, for overriding shortcut key handling, \l{QKeyEvent}.
+ \value AccelAvailable internal.
+ \value WindowActivate Window was activated.
+ \value WindowDeactivate Window was deactivated.
+ \value CaptionChange Widget's caption changed.
+ \value IconChange Widget's icon changed.
+ \value ParentFontChange Font of the parent widget changed.
+ \value ApplicationFontChange Default application font changed.
+ \value PaletteChange Palette of the widget changed.
+ \value ParentPaletteChange Palette of the parent widget changed.
+ \value ApplicationPaletteChange Default application palette changed.
+ \value Clipboard Clipboard contents have changed.
+ \value SockAct Socket activated, used to implement \l{QSocketNotifier}.
+ \value DragEnter A drag-and-drop enters widget, \l{QDragEnterEvent}.
+ \value DragMove A drag-and-drop is in progress, \l{QDragMoveEvent}.
+ \value DragLeave A drag-and-drop leaves widget, \l{QDragLeaveEvent}.
+ \value Drop A drag-and-drop is completed, \l{QDropEvent}.
+ \value DragResponse Internal event used by Qt on some platforms.
+ \value ChildInserted Object gets a child, \l{QChildEvent}.
+ \value ChildRemoved Object loses a child, \l{QChildEvent}.
+ \value LayoutHint Widget child has changed layout properties.
+ \value ActivateControl Internal event used by Qt on some platforms.
+ \value DeactivateControl Internal event used by Qt on some platforms.
+ \value LanguageChange The application translation changed, \l{QTranslator}
+ \value LayoutDirectionChange The direction of layouts changed
+ \value LocaleChange The system locale changed
+ \value Quit Reserved.
+ \value Create Reserved.
+ \value Destroy Reserved.
+ \value Reparent Reserved.
+ \value Speech Reserved for speech input.
+ \value TabletMove A Wacom Tablet Move Event.
+ \value Style Internal use only
+ \value TabletPress A Wacom Tablet Press Event
+ \value TabletRelease A Wacom Tablet Release Event
+ \value OkRequest Internal event used by Qt on some platforms.
+ \value HelpRequest Internal event used by Qt on some platforms.
+ \value IconDrag Internal event used by Qt on some platforms when proxy icon is dragged.
+ \value WindowStateChange The window's state, i.e. minimized,
+ maximized or full-screen, has changed. See \l{QWidget::windowState()}.
+ \value WindowBlocked The window is modally blocked
+ \value WindowUnblocked The window leaves modal blocking
+
+ \value User User defined event.
+ \value MaxUser Last user event id.
+
+ User events should have values between User and MaxUser inclusive.
+*/
+/*!
+ \fn QEvent::QEvent( Type type )
+
+ Contructs an event object of type \a type.
+*/
+
+/*!
+ \fn QEvent::Type QEvent::type() const
+
+ Returns the event type.
+*/
+
+/*!
+ \fn bool QEvent::spontaneous() const
+
+ Returns TRUE if the event originated outside the application, i.e.
+ it is a system event; otherwise returns FALSE.
+*/
+
+
+/*!
+ \class QTimerEvent qevent.h
+ \brief The QTimerEvent class contains parameters that describe a
+ timer event.
+
+ \ingroup events
+
+ Timer events are sent at regular intervals to objects that have
+ started one or more timers. Each timer has a unique identifier. A
+ timer is started with QObject::startTimer().
+
+ The QTimer class provides a high-level programming interface that
+ uses signals instead of events. It also provides one-shot timers.
+
+ The event handler QObject::timerEvent() receives timer events.
+
+ \sa QTimer, QObject::timerEvent(), QObject::startTimer(),
+ QObject::killTimer(), QObject::killTimers()
+*/
+
+/*!
+ \fn QTimerEvent::QTimerEvent( int timerId )
+
+ Constructs a timer event object with the timer identifier set to
+ \a timerId.
+*/
+
+/*!
+ \fn int QTimerEvent::timerId() const
+
+ Returns the unique timer identifier, which is the same identifier
+ as returned from QObject::startTimer().
+*/
+
+
+/*!
+ \class QMouseEvent qevent.h
+ \ingroup events
+
+ \brief The QMouseEvent class contains parameters that describe a mouse event.
+
+ Mouse events occur when a mouse button is pressed or released
+ inside a widget or when the mouse cursor is moved.
+
+ Mouse move events will occur only when a mouse button is pressed
+ down, unless mouse tracking has been enabled with
+ QWidget::setMouseTracking().
+
+ Qt automatically grabs the mouse when a mouse button is pressed
+ inside a widget; the widget will continue to receive mouse events
+ until the last mouse button is released.
+
+ A mouse event contains a special accept flag that indicates
+ whether the receiver wants the event. You should call
+ QMouseEvent::ignore() if the mouse event is not handled by your
+ widget. A mouse event is propagated up the parent widget chain
+ until a widget accepts it with QMouseEvent::accept() or an event
+ filter consumes it.
+
+ The functions pos(), x() and y() give the cursor position relative
+ to the widget that receives the mouse event. If you move the
+ widget as a result of the mouse event, use the global position
+ returned by globalPos() to avoid a shaking motion.
+
+ The QWidget::setEnabled() function can be used to enable or
+ disable mouse and keyboard events for a widget.
+
+ The event handlers QWidget::mousePressEvent(),
+ QWidget::mouseReleaseEvent(), QWidget::mouseDoubleClickEvent() and
+ QWidget::mouseMoveEvent() receive mouse events.
+
+ \sa QWidget::setMouseTracking(), QWidget::grabMouse(),
+ QCursor::pos()
+*/
+
+/*!
+ \fn QMouseEvent::QMouseEvent( Type type, const QPoint &pos, int button, int state )
+
+ Constructs a mouse event object.
+
+ The \a type parameter must be one of \c QEvent::MouseButtonPress,
+ \c QEvent::MouseButtonRelease, \c QEvent::MouseButtonDblClick or
+ \c QEvent::MouseMove.
+
+ The \a pos parameter specifies the position relative to the
+ receiving widget. \a button specifies the \link Qt::ButtonState
+ button\endlink that caused the event, which should be \c
+ Qt::NoButton (0), if \a type is \c MouseMove. \a state is the
+ \link Qt::ButtonState ButtonState\endlink at the time of the
+ event.
+
+ The globalPos() is initialized to QCursor::pos(), which may not be
+ appropriate. Use the other constructor to specify the global
+ position explicitly.
+*/
+
+QMouseEvent::QMouseEvent( Type type, const QPoint &pos, int button, int state )
+ : QEvent(type), p(pos), b(button),s((ushort)state), accpt(TRUE){
+ g = QCursor::pos();
+}
+
+
+/*!
+ \fn QMouseEvent::QMouseEvent( Type type, const QPoint &pos, const QPoint &globalPos, int button, int state )
+
+ Constructs a mouse event object.
+
+ The \a type parameter must be \c QEvent::MouseButtonPress, \c
+ QEvent::MouseButtonRelease, \c QEvent::MouseButtonDblClick or \c
+ QEvent::MouseMove.
+
+ The \a pos parameter specifies the position relative to the
+ receiving widget. \a globalPos is the position in absolute
+ coordinates. \a button specifies the \link Qt::ButtonState
+ button\endlink that caused the event, which should be \c
+ Qt::NoButton (0), if \a type is \c MouseMove. \a state is the
+ \link Qt::ButtonState ButtonState\endlink at the time of the
+ event.
+
+*/
+
+/*!
+ \fn const QPoint &QMouseEvent::pos() const
+
+ Returns the position of the mouse pointer relative to the widget
+ that received the event.
+
+ If you move the widget as a result of the mouse event, use the
+ global position returned by globalPos() to avoid a shaking motion.
+
+ \sa x(), y(), globalPos()
+*/
+
+/*!
+ \fn const QPoint &QMouseEvent::globalPos() const
+
+ Returns the global position of the mouse pointer \e{at the time
+ of the event}. This is important on asynchronous window systems
+ like X11. Whenever you move your widgets around in response to
+ mouse events, globalPos() may differ a lot from the current
+ pointer position QCursor::pos(), and from QWidget::mapToGlobal(
+ pos() ).
+
+ \sa globalX(), globalY()
+*/
+
+/*!
+ \fn int QMouseEvent::x() const
+
+ Returns the x-position of the mouse pointer, relative to the
+ widget that received the event.
+
+ \sa y(), pos()
+*/
+
+/*!
+ \fn int QMouseEvent::y() const
+
+ Returns the y-position of the mouse pointer, relative to the
+ widget that received the event.
+
+ \sa x(), pos()
+*/
+
+/*!
+ \fn int QMouseEvent::globalX() const
+
+ Returns the global x-position of the mouse pointer at the time of
+ the event.
+
+ \sa globalY(), globalPos()
+*/
+
+/*!
+ \fn int QMouseEvent::globalY() const
+
+ Returns the global y-position of the mouse pointer at the time of
+ the event.
+
+ \sa globalX(), globalPos()
+*/
+
+/*!
+ \fn ButtonState QMouseEvent::button() const
+
+ Returns the button that caused the event.
+
+ Possible return values are \c LeftButton, \c RightButton, \c
+ MidButton and \c NoButton.
+
+ Note that the returned value is always \c NoButton for mouse move
+ events.
+
+ \sa state() Qt::ButtonState
+*/
+
+
+/*!
+ \fn ButtonState QMouseEvent::state() const
+
+ Returns the button state (a combination of mouse buttons and
+ keyboard modifiers), i.e. what buttons and keys were being pressed
+ immediately before the event was generated.
+
+ This means that if you have a \c QEvent::MouseButtonPress or a \c
+ QEvent::MouseButtonDblClick state() will \e not include the mouse
+ button that's pressed. But once the mouse button has been
+ released, the \c QEvent::MouseButtonRelease event will have the
+ button() that was pressed.
+
+ This value is mainly interesting for \c QEvent::MouseMove; for the
+ other cases, button() is more useful.
+
+ The returned value is \c LeftButton, \c RightButton, \c MidButton,
+ \c ShiftButton, \c ControlButton and \c AltButton OR'ed together.
+
+ \sa button() stateAfter() Qt::ButtonState
+*/
+
+/*!
+ \fn ButtonState QMouseEvent::stateAfter() const
+
+ Returns the state of buttons after the event.
+
+ \sa state() Qt::ButtonState
+*/
+Qt::ButtonState QMouseEvent::stateAfter() const
+{
+ return Qt::ButtonState(state()^button());
+}
+
+
+
+/*!
+ \fn bool QMouseEvent::isAccepted() const
+
+ Returns TRUE if the receiver of the event wants to keep the key;
+ otherwise returns FALSE.
+*/
+
+/*!
+ \fn void QMouseEvent::accept()
+
+ Sets the accept flag of the mouse event object.
+
+ Setting the accept parameter indicates that the receiver of the
+ event wants the mouse event. Unwanted mouse events are sent to the
+ parent widget.
+
+ The accept flag is set by default.
+
+ \sa ignore()
+*/
+
+
+/*!
+ \fn void QMouseEvent::ignore()
+
+ Clears the accept flag parameter of the mouse event object.
+
+ Clearing the accept parameter indicates that the event receiver
+ does not want the mouse event. Unwanted mouse events are sent to
+ the parent widget.
+
+ The accept flag is set by default.
+
+ \sa accept()
+*/
+
+
+/*!
+ \class QWheelEvent qevent.h
+ \brief The QWheelEvent class contains parameters that describe a wheel event.
+
+ \ingroup events
+
+ Wheel events are sent to the widget under the mouse, and if that widget
+ does not handle the event they are sent to the focus widget. The rotation
+ distance is provided by delta(). The functions pos() and globalPos() return
+ the mouse pointer location at the time of the event.
+
+ A wheel event contains a special accept flag that indicates
+ whether the receiver wants the event. You should call
+ QWheelEvent::accept() if you handle the wheel event; otherwise it
+ will be sent to the parent widget.
+
+ The QWidget::setEnable() function can be used to enable or disable
+ mouse and keyboard events for a widget.
+
+ The event handler QWidget::wheelEvent() receives wheel events.
+
+ \sa QMouseEvent, QWidget::grabMouse()
+*/
+
+/*!
+ \fn Orientation QWheelEvent::orientation() const
+
+ Returns the wheel's orientation.
+*/
+
+/*!
+ \fn QWheelEvent::QWheelEvent( const QPoint &pos, int delta, int state, Orientation orient = Vertical );
+
+ Constructs a wheel event object.
+
+ The globalPos() is initialized to QCursor::pos(), i.e. \a pos,
+ which is usually (but not always) right. Use the other constructor
+ if you need to specify the global position explicitly. \a delta
+ contains the rotation distance, \a state holds the keyboard
+ modifier flags at the time of the event and \a orient holds the
+ wheel's orientation.
+
+ \sa pos(), delta(), state()
+*/
+#ifndef QT_NO_WHEELEVENT
+QWheelEvent::QWheelEvent( const QPoint &pos, int delta, int state, Orientation orient )
+ : QEvent(Wheel), p(pos), d(delta), s((ushort)state),
+ accpt(TRUE), o(orient)
+{
+ g = QCursor::pos();
+}
+#endif
+/*!
+ \fn QWheelEvent::QWheelEvent( const QPoint &pos, const QPoint& globalPos, int delta, int state, Orientation orient = Vertical )
+
+ Constructs a wheel event object. The position when the event
+ occurred is given in \a pos and \a globalPos. \a delta contains
+ the rotation distance, \a state holds the keyboard modifier flags
+ at the time of the event and \a orient holds the wheel's
+ orientation.
+
+ \sa pos(), globalPos(), delta(), state()
+*/
+
+/*!
+ \fn int QWheelEvent::delta() const
+
+ Returns the distance that the wheel is rotated expressed in
+ multiples or divisions of the \e{wheel delta}, which is currently
+ defined to be 120. A positive value indicates that the wheel was
+ rotated forwards away from the user; a negative value indicates
+ that the wheel was rotated backwards toward the user.
+
+ The \e{wheel delta} constant was defined to be 120 by wheel mouse
+ vendors to allow building finer-resolution wheels in the future,
+ including perhaps a freely rotating wheel with no notches. The
+ expectation is that such a device would send more messages per
+ rotation but with a smaller value in each message.
+*/
+
+/*!
+ \fn const QPoint &QWheelEvent::pos() const
+
+ Returns the position of the mouse pointer, relative to the widget
+ that received the event.
+
+ If you move your widgets around in response to mouse
+ events, use globalPos() instead of this function.
+
+ \sa x(), y(), globalPos()
+*/
+
+/*!
+ \fn int QWheelEvent::x() const
+
+ Returns the x-position of the mouse pointer, relative to the
+ widget that received the event.
+
+ \sa y(), pos()
+*/
+
+/*!
+ \fn int QWheelEvent::y() const
+
+ Returns the y-position of the mouse pointer, relative to the
+ widget that received the event.
+
+ \sa x(), pos()
+*/
+
+
+/*!
+ \fn const QPoint &QWheelEvent::globalPos() const
+
+ Returns the global position of the mouse pointer \e{at the time
+ of the event}. This is important on asynchronous window systems
+ such as X11; whenever you move your widgets around in response to
+ mouse events, globalPos() can differ a lot from the current
+ pointer position QCursor::pos().
+
+ \sa globalX(), globalY()
+*/
+
+/*!
+ \fn int QWheelEvent::globalX() const
+
+ Returns the global x-position of the mouse pointer at the time of
+ the event.
+
+ \sa globalY(), globalPos()
+*/
+
+/*!
+ \fn int QWheelEvent::globalY() const
+
+ Returns the global y-position of the mouse pointer at the time of
+ the event.
+
+ \sa globalX(), globalPos()
+*/
+
+
+/*!
+ \fn ButtonState QWheelEvent::state() const
+
+ Returns the keyboard modifier flags of the event.
+
+ The returned value is \c ShiftButton, \c ControlButton, and \c
+ AltButton OR'ed together.
+*/
+
+/*!
+ \fn bool QWheelEvent::isAccepted() const
+
+ Returns TRUE if the receiver of the event handles the wheel event;
+ otherwise returns FALSE.
+*/
+
+/*!
+ \fn void QWheelEvent::accept()
+
+ Sets the accept flag of the wheel event object.
+
+ Setting the accept parameter indicates that the receiver of the
+ event wants the wheel event. Unwanted wheel events are sent to the
+ parent widget.
+
+ The accept flag is set by default.
+
+ \sa ignore()
+*/
+
+/*!
+ \fn void QWheelEvent::ignore()
+
+ Clears the accept flag parameter of the wheel event object.
+
+ Clearing the accept parameter indicates that the event receiver
+ does not want the wheel event. Unwanted wheel events are sent to
+ the parent widget. The accept flag is set by default.
+
+ \sa accept()
+*/
+
+
+/*!
+ \enum Qt::Modifier
+
+ This enum type describes the keyboard modifier keys supported by
+ Qt.
+
+ \value SHIFT the Shift keys provided on all standard keyboards.
+ \value META the Meta keys.
+ \value CTRL the Ctrl keys.
+ \value ALT the normal Alt keys, but not e.g. AltGr.
+ \value MODIFIER_MASK is a mask of Shift, Ctrl, Alt and Meta.
+ \value UNICODE_ACCEL the accelerator is specified as a Unicode code
+ point, not as a Qt Key.
+*/
+
+/*!
+ \class QKeyEvent qevent.h
+ \brief The QKeyEvent class contains describes a key event.
+
+ \ingroup events
+
+ Key events occur when a key is pressed or released when a widget
+ has keyboard input focus.
+
+ A key event contains a special accept flag that indicates whether the
+ receiver wants the key event. You should call QKeyEvent::ignore() if the
+ key press or release event is not handled by your widget. A key event is
+ propagated up the parent widget chain until a widget accepts it with
+ QKeyEvent::accept() or an event filter consumes it.
+ Key events for multi media keys are ignored by default. You should call
+ QKeyEvent::accept() if your widget handles those events.
+
+ The QWidget::setEnable() function can be used to enable or disable
+ mouse and keyboard events for a widget.
+
+ The event handlers QWidget::keyPressEvent() and
+ QWidget::keyReleaseEvent() receive key events.
+
+ \sa QFocusEvent, QWidget::grabKeyboard()
+*/
+
+/*!
+ \fn QKeyEvent::QKeyEvent( Type type, int key, int ascii, int state,
+ const QString& text, bool autorep, ushort count )
+
+ Constructs a key event object.
+
+ The \a type parameter must be \c QEvent::KeyPress or \c
+ QEvent::KeyRelease. If \a key is 0 the event is not a result of a
+ known key (e.g. it may be the result of a compose sequence or
+ keyboard macro). \a ascii is the ASCII code of the key that was
+ pressed or released. \a state holds the keyboard modifiers. \a
+ text is the Unicode text that the key generated. If \a autorep is
+ TRUE, isAutoRepeat() will be TRUE. \a count is the number of
+ single keys.
+
+ The accept flag is set to TRUE.
+*/
+
+/*!
+ \fn int QKeyEvent::key() const
+
+ Returns the code of the key that was pressed or released.
+
+ See \l Qt::Key for the list of keyboard codes. These codes are
+ independent of the underlying window system.
+
+ A value of either 0 or Key_unknown means that the event is not
+ the result of a known key (e.g. it may be the result of a compose
+ sequence or a keyboard macro, or due to key event compression).
+
+ Applications should not use the Qt latin 1 keycodes between 128
+ and 255, but should rather use the QKeyEvent::text(). This is
+ mainly for compatibility.
+
+ \sa QWidget::setKeyCompression()
+*/
+
+/*!
+ \fn int QKeyEvent::ascii() const
+
+ Returns the ASCII code of the key that was pressed or released. We
+ recommend using text() instead.
+
+ \sa text()
+*/
+
+/*!
+ \fn QString QKeyEvent::text() const
+
+ Returns the Unicode text that this key generated. The text returned
+ migth be empty, which is the case when pressing or
+ releasing modifying keys as Shift, Control, Alt and Meta. In these
+ cases key() will contain a valid value.
+
+ \sa QWidget::setKeyCompression()
+*/
+
+/*!
+ \fn ButtonState QKeyEvent::state() const
+
+ Returns the keyboard modifier flags that existed immediately
+ before the event occurred.
+
+ The returned value is \c ShiftButton, \c ControlButton, \c AltButton
+ and \c MetaButton OR'ed together.
+
+ \sa stateAfter()
+*/
+
+/*!
+ \fn ButtonState QKeyEvent::stateAfter() const
+
+ Returns the keyboard modifier flags that existed immediately after
+ the event occurred.
+
+ \warning This function cannot be trusted.
+
+ \sa state()
+*/
+//###### We must check with XGetModifierMapping
+Qt::ButtonState QKeyEvent::stateAfter() const
+{
+ if ( key() == Key_Shift )
+ return Qt::ButtonState(state()^ShiftButton);
+ if ( key() == Key_Control )
+ return Qt::ButtonState(state()^ControlButton);
+ if ( key() == Key_Alt )
+ return Qt::ButtonState(state()^AltButton);
+ if ( key() == Key_Meta )
+ return Qt::ButtonState(state()^MetaButton);
+ return state();
+}
+
+/*!
+ \fn bool QKeyEvent::isAccepted() const
+
+ Returns TRUE if the receiver of the event wants to keep the key;
+ otherwise returns FALSE
+*/
+
+/*!
+ \fn void QKeyEvent::accept()
+
+ Sets the accept flag of the key event object.
+
+ Setting the accept parameter indicates that the receiver of the
+ event wants the key event. Unwanted key events are sent to the
+ parent widget.
+
+ The accept flag is set by default.
+
+ \sa ignore()
+*/
+
+/*!
+ \fn bool QKeyEvent::isAutoRepeat() const
+
+ Returns TRUE if this event comes from an auto-repeating key and
+ FALSE if it comes from an initial key press.
+
+ Note that if the event is a multiple-key compressed event that is
+ partly due to auto-repeat, this function could return either TRUE
+ or FALSE indeterminately.
+*/
+
+/*!
+ \fn int QKeyEvent::count() const
+
+ Returns the number of single keys for this event. If text() is not
+ empty, this is simply the length of the string.
+
+ \sa QWidget::setKeyCompression()
+*/
+
+/*!
+ \fn void QKeyEvent::ignore()
+
+ Clears the accept flag parameter of the key event object.
+
+ Clearing the accept parameter indicates that the event receiver
+ does not want the key event. Unwanted key events are sent to the
+ parent widget.
+
+ The accept flag is set by default.
+
+ \sa accept()
+*/
+
+/*!
+ \enum Qt::Key
+
+ The key names used by Qt.
+
+ \value Key_Escape
+ \value Key_Tab
+ \value Key_Backtab
+ \value Key_Backspace
+ \value Key_Return
+ \value Key_Enter
+ \value Key_Insert
+ \value Key_Delete
+ \value Key_Pause
+ \value Key_Print
+ \value Key_SysReq
+ \value Key_Home
+ \value Key_End
+ \value Key_Left
+ \value Key_Up
+ \value Key_Right
+ \value Key_Down
+ \value Key_Prior
+ \value Key_Next
+ \value Key_Shift
+ \value Key_Control
+ \value Key_Meta
+ \value Key_Alt
+ \value Key_CapsLock
+ \value Key_NumLock
+ \value Key_ScrollLock
+ \value Key_Clear
+ \value Key_F1
+ \value Key_F2
+ \value Key_F3
+ \value Key_F4
+ \value Key_F5
+ \value Key_F6
+ \value Key_F7
+ \value Key_F8
+ \value Key_F9
+ \value Key_F10
+ \value Key_F11
+ \value Key_F12
+ \value Key_F13
+ \value Key_F14
+ \value Key_F15
+ \value Key_F16
+ \value Key_F17
+ \value Key_F18
+ \value Key_F19
+ \value Key_F20
+ \value Key_F21
+ \value Key_F22
+ \value Key_F23
+ \value Key_F24
+ \value Key_F25
+ \value Key_F26
+ \value Key_F27
+ \value Key_F28
+ \value Key_F29
+ \value Key_F30
+ \value Key_F31
+ \value Key_F32
+ \value Key_F33
+ \value Key_F34
+ \value Key_F35
+ \value Key_Super_L
+ \value Key_Super_R
+ \value Key_Menu
+ \value Key_Hyper_L
+ \value Key_Hyper_R
+ \value Key_Help
+ \value Key_Space
+ \value Key_Any
+ \value Key_Exclam
+ \value Key_QuoteDbl
+ \value Key_NumberSign
+ \value Key_Dollar
+ \value Key_Percent
+ \value Key_Ampersand
+ \value Key_Apostrophe
+ \value Key_ParenLeft
+ \value Key_ParenRight
+ \value Key_Asterisk
+ \value Key_Plus
+ \value Key_Comma
+ \value Key_Minus
+ \value Key_Period
+ \value Key_Slash
+ \value Key_0
+ \value Key_1
+ \value Key_2
+ \value Key_3
+ \value Key_4
+ \value Key_5
+ \value Key_6
+ \value Key_7
+ \value Key_8
+ \value Key_9
+ \value Key_Colon
+ \value Key_Semicolon
+ \value Key_Less
+ \value Key_Equal
+ \value Key_Greater
+ \value Key_Question
+ \value Key_At
+ \value Key_A
+ \value Key_B
+ \value Key_C
+ \value Key_D
+ \value Key_E
+ \value Key_F
+ \value Key_G
+ \value Key_H
+ \value Key_I
+ \value Key_J
+ \value Key_K
+ \value Key_L
+ \value Key_M
+ \value Key_N
+ \value Key_O
+ \value Key_P
+ \value Key_Q
+ \value Key_R
+ \value Key_S
+ \value Key_T
+ \value Key_U
+ \value Key_V
+ \value Key_W
+ \value Key_X
+ \value Key_Y
+ \value Key_Z
+ \value Key_BracketLeft
+ \value Key_Backslash
+ \value Key_BracketRight
+ \value Key_AsciiCircum
+ \value Key_Underscore
+ \value Key_QuoteLeft
+ \value Key_BraceLeft
+ \value Key_Bar
+ \value Key_BraceRight
+ \value Key_AsciiTilde
+
+ \value Key_nobreakspace
+ \value Key_exclamdown
+ \value Key_cent
+ \value Key_sterling
+ \value Key_currency
+ \value Key_yen
+ \value Key_brokenbar
+ \value Key_section
+ \value Key_diaeresis
+ \value Key_copyright
+ \value Key_ordfeminine
+ \value Key_guillemotleft
+ \value Key_notsign
+ \value Key_hyphen
+ \value Key_registered
+ \value Key_macron
+ \value Key_degree
+ \value Key_plusminus
+ \value Key_twosuperior
+ \value Key_threesuperior
+ \value Key_acute
+ \value Key_mu
+ \value Key_paragraph
+ \value Key_periodcentered
+ \value Key_cedilla
+ \value Key_onesuperior
+ \value Key_masculine
+ \value Key_guillemotright
+ \value Key_onequarter
+ \value Key_onehalf
+ \value Key_threequarters
+ \value Key_questiondown
+ \value Key_Agrave
+ \value Key_Aacute
+ \value Key_Acircumflex
+ \value Key_Atilde
+ \value Key_Adiaeresis
+ \value Key_Aring
+ \value Key_AE
+ \value Key_Ccedilla
+ \value Key_Egrave
+ \value Key_Eacute
+ \value Key_Ecircumflex
+ \value Key_Ediaeresis
+ \value Key_Igrave
+ \value Key_Iacute
+ \value Key_Icircumflex
+ \value Key_Idiaeresis
+ \value Key_ETH
+ \value Key_Ntilde
+ \value Key_Ograve
+ \value Key_Oacute
+ \value Key_Ocircumflex
+ \value Key_Otilde
+ \value Key_Odiaeresis
+ \value Key_multiply
+ \value Key_Ooblique
+ \value Key_Ugrave
+ \value Key_Uacute
+ \value Key_Ucircumflex
+ \value Key_Udiaeresis
+ \value Key_Yacute
+ \value Key_THORN
+ \value Key_ssharp
+ \value Key_agrave
+ \value Key_aacute
+ \value Key_acircumflex
+ \value Key_atilde
+ \value Key_adiaeresis
+ \value Key_aring
+ \value Key_ae
+ \value Key_ccedilla
+ \value Key_egrave
+ \value Key_eacute
+ \value Key_ecircumflex
+ \value Key_ediaeresis
+ \value Key_igrave
+ \value Key_iacute
+ \value Key_icircumflex
+ \value Key_idiaeresis
+ \value Key_eth
+ \value Key_ntilde
+ \value Key_ograve
+ \value Key_oacute
+ \value Key_ocircumflex
+ \value Key_otilde
+ \value Key_odiaeresis
+ \value Key_division
+ \value Key_oslash
+ \value Key_ugrave
+ \value Key_uacute
+ \value Key_ucircumflex
+ \value Key_udiaeresis
+ \value Key_yacute
+ \value Key_thorn
+ \value Key_ydiaeresis
+
+ Multimedia keys
+
+ \value Key_Back
+ \value Key_Forward
+ \value Key_Stop
+ \value Key_Refresh
+
+ \value Key_VolumeDown
+ \value Key_VolumeMute
+ \value Key_VolumeUp
+ \value Key_BassBoost
+ \value Key_BassUp
+ \value Key_BassDown
+ \value Key_TrebleUp
+ \value Key_TrebleDown
+
+ \value Key_MediaPlay
+ \value Key_MediaStop
+ \value Key_MediaPrev
+ \value Key_MediaNext
+ \value Key_MediaRecord
+
+ \value Key_HomePage
+ \value Key_Favorites
+ \value Key_Search
+ \value Key_Standby
+ \value Key_OpenUrl
+
+ \value Key_LaunchMail
+ \value Key_LaunchMedia
+ \value Key_Launch0
+ \value Key_Launch1
+ \value Key_Launch2
+ \value Key_Launch3
+ \value Key_Launch4
+ \value Key_Launch5
+ \value Key_Launch6
+ \value Key_Launch7
+ \value Key_Launch8
+ \value Key_Launch9
+ \value Key_LaunchA
+ \value Key_LaunchB
+ \value Key_LaunchC
+ \value Key_LaunchD
+ \value Key_LaunchE
+ \value Key_LaunchF
+
+ \value Key_MediaLast
+
+ \value Key_unknown
+
+ \value Key_Direction_L internal use only
+ \value Key_Direction_R internal use only
+
+*/
+
+
+/*!
+ \class QFocusEvent qevent.h
+ \brief The QFocusEvent class contains event parameters for widget focus
+ events.
+
+ \ingroup events
+
+ Focus events are sent to widgets when the keyboard input focus
+ changes. Focus events occur due to mouse actions, keypresses (e.g.
+ Tab or Backtab), the window system, popup menus, keyboard
+ shortcuts or other application specific reasons. The reason for a
+ particular focus event is returned by reason() in the appropriate
+ event handler.
+
+ The event handlers QWidget::focusInEvent() and
+ QWidget::focusOutEvent() receive focus events.
+
+ Use setReason() to set the reason for all focus events, and
+ resetReason() to set the reason for all focus events to the reason
+ in force before the last setReason() call.
+
+ \sa QWidget::setFocus(), QWidget::setFocusPolicy()
+*/
+
+/*!
+ \fn QFocusEvent::QFocusEvent( Type type )
+
+ Constructs a focus event object.
+
+ The \a type parameter must be either \c QEvent::FocusIn or \c
+ QEvent::FocusOut.
+*/
+
+
+
+QFocusEvent::Reason QFocusEvent::m_reason = QFocusEvent::Other;
+QFocusEvent::Reason QFocusEvent::prev_reason = QFocusEvent::Other;
+
+
+/*!
+ \enum QFocusEvent::Reason
+
+ This enum specifies why the focus changed.
+
+ \value Mouse because of a mouse action.
+ \value Tab because of a Tab press.
+ \value Backtab because of a Backtab press
+ (possibly including Shift/Control, e.g. Shift+Tab).
+ \value ActiveWindow because the window system made this window (in)active.
+ \value Popup because the application opened/closed a popup that grabbed/released focus.
+ \value Shortcut because of a keyboard shortcut.
+ \value Other any other reason, usually application-specific.
+
+ See the \link focus.html keyboard focus overview\endlink for more
+ about focus.
+*/
+
+/*!
+ Returns the reason for this focus event.
+
+ \sa setReason()
+ */
+QFocusEvent::Reason QFocusEvent::reason()
+{
+ return m_reason;
+}
+
+/*!
+ Sets the reason for all future focus events to \a reason.
+
+ \sa reason(), resetReason()
+ */
+void QFocusEvent::setReason( Reason reason )
+{
+ prev_reason = m_reason;
+ m_reason = reason;
+}
+
+/*!
+ Resets the reason for all future focus events to the value before
+ the last setReason() call.
+
+ \sa reason(), setReason()
+ */
+void QFocusEvent::resetReason()
+{
+ m_reason = prev_reason;
+}
+
+/*!
+ \fn bool QFocusEvent::gotFocus() const
+
+ Returns TRUE if the widget received the text input focus;
+ otherwise returns FALSE.
+*/
+
+/*!
+ \fn bool QFocusEvent::lostFocus() const
+
+ Returns TRUE if the widget lost the text input focus; otherwise
+ returns FALSE.
+*/
+
+
+/*!
+ \class QPaintEvent qevent.h
+ \brief The QPaintEvent class contains event parameters for paint events.
+
+ \ingroup events
+
+ Paint events are sent to widgets that need to update themselves,
+ for instance when part of a widget is exposed because a covering
+ widget is moved.
+
+ The event contains a region() that needs to be updated, and a
+ rect() that is the bounding rectangle of that region. Both are
+ provided because many widgets can't make much use of region(), and
+ rect() can be much faster than region().boundingRect(). Painting
+ is clipped to region() during processing of a paint event.
+
+ The erased() function returns TRUE if the region() has been
+ cleared to the widget's background (see
+ QWidget::backgroundMode()), and FALSE if the region's contents are
+ arbitrary.
+
+ \sa QPainter QWidget::update() QWidget::repaint()
+ QWidget::paintEvent() QWidget::backgroundMode() QRegion
+*/
+
+/*!
+ \fn QPaintEvent::QPaintEvent( const QRegion &paintRegion, bool erased=TRUE )
+
+ Constructs a paint event object with the region that should be
+ updated. The region is given by \a paintRegion. If \a erased is
+ TRUE the region will be cleared before repainting.
+*/
+
+/*!
+ \fn QPaintEvent::QPaintEvent( const QRect &paintRect, bool erased=TRUE )
+
+ Constructs a paint event object with the rectangle that should be
+ updated. The region is also given by \a paintRect. If \a erased is
+ TRUE the region will be cleared before repainting.
+*/
+
+/*!
+ \fn QPaintEvent::QPaintEvent( const QRegion &paintRegion, const QRect &paintRect, bool erased=TRUE )
+
+ Constructs a paint event object with the rectangle \a paintRect
+ that should be updated. The region is given by \a paintRegion. If
+ \a erased is TRUE the region will be cleared before repainting.
+*/
+
+/*!
+ \fn const QRect &QPaintEvent::rect() const
+
+ Returns the rectangle that should be updated.
+
+ \sa region(), QPainter::setClipRect()
+*/
+
+/*!
+ \fn const QRegion &QPaintEvent::region() const
+
+ Returns the region that should be updated.
+
+ \sa rect(), QPainter::setClipRegion()
+*/
+
+/*!
+ \fn bool QPaintEvent::erased() const
+
+ Returns TRUE if the paint event region (or rectangle) has been
+ erased with the widget's background; otherwise returns FALSE.
+*/
+
+/*!
+ \class QMoveEvent qevent.h
+ \brief The QMoveEvent class contains event parameters for move events.
+
+ \ingroup events
+
+ Move events are sent to widgets that have been moved to a new position
+ relative to their parent.
+
+ The event handler QWidget::moveEvent() receives move events.
+
+ \sa QWidget::move(), QWidget::setGeometry()
+*/
+
+/*!
+ \fn QMoveEvent::QMoveEvent( const QPoint &pos, const QPoint &oldPos )
+
+ Constructs a move event with the new and old widget positions, \a
+ pos and \a oldPos respectively.
+*/
+
+/*!
+ \fn const QPoint &QMoveEvent::pos() const
+
+ Returns the new position of the widget. This excludes the window
+ frame for top level widgets.
+*/
+
+/*!
+ \fn const QPoint &QMoveEvent::oldPos() const
+
+ Returns the old position of the widget.
+*/
+
+
+/*!
+ \class QResizeEvent qevent.h
+ \brief The QResizeEvent class contains event parameters for resize events.
+
+ \ingroup events
+
+ Resize events are sent to widgets that have been resized.
+
+ The event handler QWidget::resizeEvent() receives resize events.
+
+ \sa QWidget::resize(), QWidget::setGeometry()
+*/
+
+/*!
+ \fn QResizeEvent::QResizeEvent( const QSize &size, const QSize &oldSize )
+
+ Constructs a resize event with the new and old widget sizes, \a
+ size and \a oldSize respectively.
+*/
+
+/*!
+ \fn const QSize &QResizeEvent::size() const
+
+ Returns the new size of the widget, which is the same as
+ QWidget::size().
+*/
+
+/*!
+ \fn const QSize &QResizeEvent::oldSize() const
+
+ Returns the old size of the widget.
+*/
+
+
+/*!
+ \class QCloseEvent qevent.h
+ \brief The QCloseEvent class contains parameters that describe a close event.
+
+ \ingroup events
+
+ Close events are sent to widgets that the user wants to close,
+ usually by choosing "Close" from the window menu, or by clicking
+ the `X' titlebar button. They are also sent when you call
+ QWidget::close() to close a widget programmatically.
+
+ Close events contain a flag that indicates whether the receiver
+ wants the widget to be closed or not. When a widget accepts the
+ close event, it is hidden (and destroyed if it was created with
+ the \c WDestructiveClose flag). If it refuses to accept the close
+ event nothing happens. (Under X11 it is possible that the window
+ manager will forcibly close the window; but at the time of writing
+ we are not aware of any window manager that does this.)
+
+ The application's main widget -- QApplication::mainWidget() --
+ is a special case. When it accepts the close event, Qt leaves the
+ main event loop and the application is immediately terminated
+ (i.e. it returns from the call to QApplication::exec() in the
+ main() function).
+
+ The event handler QWidget::closeEvent() receives close events. The
+ default implementation of this event handler accepts the close
+ event. If you do not want your widget to be hidden, or want some
+ special handing, you should reimplement the event handler.
+
+ The \link simple-application.html#closeEvent closeEvent() in the
+ Application Walkthrough\endlink shows a close event handler that
+ asks whether to save a document before closing.
+
+ If you want the widget to be deleted when it is closed, create it
+ with the \c WDestructiveClose widget flag. This is very useful for
+ independent top-level windows in a multi-window application.
+
+ \l{QObject}s emits the \link QObject::destroyed()
+ destroyed()\endlink signal when they are deleted.
+
+ If the last top-level window is closed, the
+ QApplication::lastWindowClosed() signal is emitted.
+
+ The isAccepted() function returns TRUE if the event's receiver has
+ agreed to close the widget; call accept() to agree to close the
+ widget and call ignore() if the receiver of this event does not
+ want the widget to be closed.
+
+ \sa QWidget::close(), QWidget::hide(), QObject::destroyed(),
+ QApplication::setMainWidget(), QApplication::lastWindowClosed(),
+ QApplication::exec(), QApplication::quit()
+*/
+
+/*!
+ \fn QCloseEvent::QCloseEvent()
+
+ Constructs a close event object with the accept parameter flag set
+ to FALSE.
+
+ \sa accept()
+*/
+
+/*!
+ \fn bool QCloseEvent::isAccepted() const
+
+ Returns TRUE if the receiver of the event has agreed to close the
+ widget; otherwise returns FALSE.
+
+ \sa accept(), ignore()
+*/
+
+/*!
+ \fn void QCloseEvent::accept()
+
+ Sets the accept flag of the close event object.
+
+ Setting the accept flag indicates that the receiver of this event
+ agrees to close the widget.
+
+ The accept flag is \e not set by default.
+
+ If you choose to accept in QWidget::closeEvent(), the widget will
+ be hidden. If the widget's \c WDestructiveClose flag is set, it
+ will also be destroyed.
+
+ \sa ignore(), QWidget::hide()
+*/
+
+/*!
+ \fn void QCloseEvent::ignore()
+
+ Clears the accept flag of the close event object.
+
+ Clearing the accept flag indicates that the receiver of this event
+ does not want the widget to be closed.
+
+ The close event is constructed with the accept flag cleared.
+
+ \sa accept()
+*/
+
+/*!
+ \class QIconDragEvent qevent.h
+ \brief The QIconDragEvent class signals that a main icon drag has begun.
+
+ \ingroup events
+
+ Icon drag events are sent to widgets when the main icon of a window has been dragged away.
+ On Mac OS X this is fired when the proxy icon of a window is dragged off titlebar, in response to
+ this event is is normal to begin using drag and drop.
+*/
+
+/*!
+ \fn QIconDragEvent::QIconDragEvent()
+
+ Constructs an icon drag event object with the accept parameter
+ flag set to FALSE.
+
+ \sa accept()
+*/
+
+/*!
+ \fn bool QIconDragEvent::isAccepted() const
+
+ Returns TRUE if the receiver of the event has started a drag and
+ drop operation; otherwise returns FALSE.
+
+ \sa accept(), ignore()
+*/
+
+/*!
+ \fn void QIconDragEvent::accept()
+
+ Sets the accept flag of the icon drag event object.
+
+ Setting the accept flag indicates that the receiver of this event
+ has started a drag and drop oeration.
+
+ The accept flag is \e not set by default.
+
+ \sa ignore(), QWidget::hide()
+*/
+
+/*!
+ \fn void QIconDragEvent::ignore()
+
+ Clears the accept flag of the icon drag object.
+
+ Clearing the accept flag indicates that the receiver of this event
+ has not handled the icon drag as a result other events can be sent.
+
+ The icon drag event is constructed with the accept flag cleared.
+
+ \sa accept()
+*/
+
+/*!
+ \class QContextMenuEvent qevent.h
+ \brief The QContextMenuEvent class contains parameters that describe a context menu event.
+
+ \ingroup events
+
+ Context menu events are sent to widgets when a user triggers a
+ context menu. What triggers this is platform dependent. For
+ example, on Windows, pressing the menu button or releasing the
+ right mouse button will cause this event to be sent.
+
+ When this event occurs it is customary to show a QPopupMenu with a
+ context menu, if this is relevant to the context.
+
+ Context menu events contain a special accept flag that indicates
+ whether the receiver accepted the event. If the event handler does
+ not accept the event, then whatever triggered the event will be
+ handled as a regular input event if possible.
+
+ \sa QPopupMenu
+*/
+
+/*!
+ \fn QContextMenuEvent::QContextMenuEvent( Reason reason, const QPoint &pos, const QPoint &globalPos, int state )
+
+ Constructs a context menu event object with the accept parameter
+ flag set to FALSE.
+
+ The \a reason parameter must be \c QContextMenuEvent::Mouse or \c
+ QContextMenuEvent::Keyboard.
+
+ The \a pos parameter specifies the mouse position relative to the
+ receiving widget. \a globalPos is the mouse position in absolute
+ coordinates. \a state is the ButtonState at the time of the event.
+*/
+
+
+/*!
+ \fn QContextMenuEvent::QContextMenuEvent( Reason reason, const QPoint &pos, int state )
+
+ Constructs a context menu event object with the accept parameter
+ flag set to FALSE.
+
+ The \a reason parameter must be \c QContextMenuEvent::Mouse or \c
+ QContextMenuEvent::Keyboard.
+
+ The \a pos parameter specifies the mouse position relative to the
+ receiving widget. \a state is the ButtonState at the time of the
+ event.
+
+ The globalPos() is initialized to QCursor::pos(), which may not be
+ appropriate. Use the other constructor to specify the global
+ position explicitly.
+*/
+
+QContextMenuEvent::QContextMenuEvent( Reason reason, const QPoint &pos, int state )
+ : QEvent( ContextMenu ), p( pos ), accpt(TRUE), consum(TRUE),
+ reas( reason ), s((ushort)state)
+{
+ gp = QCursor::pos();
+}
+
+/*!
+ \fn const QPoint &QContextMenuEvent::pos() const
+
+ Returns the position of the mouse pointer relative to the widget
+ that received the event.
+
+ \sa x(), y(), globalPos()
+*/
+
+/*!
+ \fn int QContextMenuEvent::x() const
+
+ Returns the x-position of the mouse pointer, relative to the
+ widget that received the event.
+
+ \sa y(), pos()
+*/
+
+/*!
+ \fn int QContextMenuEvent::y() const
+
+ Returns the y-position of the mouse pointer, relative to the
+ widget that received the event.
+
+ \sa x(), pos()
+*/
+
+/*!
+ \fn const QPoint &QContextMenuEvent::globalPos() const
+
+ Returns the global position of the mouse pointer at the time of
+ the event.
+
+ \sa x(), y(), pos()
+*/
+
+/*!
+ \fn int QContextMenuEvent::globalX() const
+
+ Returns the global x-position of the mouse pointer at the time of
+ the event.
+
+ \sa globalY(), globalPos()
+*/
+
+/*!
+ \fn int QContextMenuEvent::globalY() const
+
+ Returns the global y-position of the mouse pointer at the time of
+ the event.
+
+ \sa globalX(), globalPos()
+*/
+
+/*!
+ \fn ButtonState QContextMenuEvent::state() const
+
+ Returns the button state (a combination of mouse buttons and
+ keyboard modifiers), i.e. what buttons and keys were being
+ pressed immediately before the event was generated.
+
+ The returned value is \c LeftButton, \c RightButton, \c MidButton,
+ \c ShiftButton, \c ControlButton and \c AltButton OR'ed together.
+*/
+
+/*!
+ \fn bool QContextMenuEvent::isConsumed() const
+
+ Returns TRUE (which stops propagation of the event) if the
+ receiver has blocked the event; otherwise returns FALSE.
+
+ \sa accept(), ignore(), consume()
+*/
+
+/*!
+ \fn void QContextMenuEvent::consume()
+
+ Sets the consume flag of the context event object.
+
+ Setting the consume flag indicates that the receiver of this event
+ does not want the event to be propagated further (i.e. not sent to
+ parent classes.)
+
+ The consumed flag is not set by default.
+
+ \sa ignore() accept()
+*/
+
+/*!
+ \fn bool QContextMenuEvent::isAccepted() const
+
+ Returns TRUE if the receiver has processed the event; otherwise
+ returns FALSE.
+
+ \sa accept(), ignore(), consume()
+*/
+
+/*!
+ \fn void QContextMenuEvent::accept()
+
+ Sets the accept flag of the context event object.
+
+ Setting the accept flag indicates that the receiver of this event
+ has processed the event. Processing the event means you did
+ something with it and it will be implicitly consumed.
+
+ The accept flag is not set by default.
+
+ \sa ignore() consume()
+*/
+
+/*!
+ \fn void QContextMenuEvent::ignore()
+
+ Clears the accept flag of the context event object.
+
+ Clearing the accept flag indicates that the receiver of this event
+ does not need to show a context menu. This will implicitly remove
+ the consumed flag as well.
+
+ The accept flag is not set by default.
+
+ \sa accept() consume()
+*/
+
+/*!
+ \enum QContextMenuEvent::Reason
+
+ This enum describes the reason the ContextMenuEvent was sent. The
+ values are:
+
+ \value Mouse The mouse caused the event to be sent. Normally this
+ means the right mouse button was clicked, but this is platform
+ specific.
+
+ \value Keyboard The keyboard caused this event to be sent. On
+ Windows this means the menu button was pressed.
+
+ \value Other The event was sent by some other means (i.e. not by
+ the mouse or keyboard).
+*/
+
+
+/*!
+ \fn QContextMenuEvent::Reason QContextMenuEvent::reason() const
+
+ Returns the reason for this context event.
+*/
+
+
+/*!
+ \class QIMEvent qevent.h
+ \brief The QIMEvent class provides parameters for input method events.
+
+ \ingroup events
+
+ Input method events are sent to widgets when an input method is
+ used to enter text into a widget. Input methods are widely used to
+ enter text in Asian and other complex languages.
+
+ The events are of interest to widgets that accept keyboard input
+ and want to be able to correctly handle complex languages. Text
+ input in such languages is usually a three step process.
+
+ \list 1
+ \i <b>Starting to Compose</b><br>
+ When the user presses the first key on a keyboard an input context
+ is created. This input context will contain a string with the
+ typed characters.
+
+ \i <b>Composing</b><br>
+ With every new key pressed, the input method will try to create a
+ matching string for the text typed so far. While the input context
+ is active, the user can only move the cursor inside the string
+ belonging to this input context.
+
+ \i <b>Completing</b><br>
+ At some point, e.g. when the user presses the Spacebar, they get
+ to this stage, where they can choose from a number of strings that
+ match the text they have typed so far. The user can press Enter to
+ confirm their choice or Escape to cancel the input; in either case
+ the input context will be closed.
+ \endlist
+
+ Note that the particular key presses used for a given input
+ context may differ from those we've mentioned here, i.e. they may
+ not be Spacebar, Enter and Escape.
+
+ These three stages are represented by three different types of
+ events. The IMStartEvent, IMComposeEvent and IMEndEvent. When a
+ new input context is created, an IMStartEvent will be sent to the
+ widget and delivered to the \l QWidget::imStartEvent() function.
+ The widget can then update internal data structures to reflect
+ this.
+
+ After this, an IMComposeEvent will be sent to the widget for
+ every key the user presses. It will contain the current
+ composition string the widget has to show and the current cursor
+ position within the composition string. This string is temporary
+ and can change with every key the user types, so the widget will
+ need to store the state before the composition started (the state
+ it had when it received the IMStartEvent). IMComposeEvents will be
+ delivered to the \l QWidget::imComposeEvent() function.
+
+ Usually, widgets try to mark the part of the text that is part of
+ the current composition in a way that is visible to the user. A
+ commonly used visual cue is to use a dotted underline.
+
+ After the user has selected the final string, an IMEndEvent will
+ be sent to the widget. The event contains the final string the
+ user selected, and could be empty if they canceled the
+ composition. This string should be accepted as the final text the
+ user entered, and the intermediate composition string should be
+ cleared. These events are delivered to \l QWidget::imEndEvent().
+
+ If the user clicks another widget, taking the focus out of the
+ widget where the composition is taking place the IMEndEvent will
+ be sent and the string it holds will be the result of the
+ composition up to that point (which may be an empty string).
+*/
+
+/*!
+ \fn QIMEvent::QIMEvent( Type type, const QString &text, int cursorPosition )
+
+ Constructs a new QIMEvent with the accept flag set to FALSE. \a
+ type can be one of QEvent::IMStartEvent, QEvent::IMComposeEvent
+ or QEvent::IMEndEvent. \a text contains the current compostion
+ string and \a cursorPosition the current position of the cursor
+ inside \a text.
+*/
+
+/*!
+ \fn const QString &QIMEvent::text() const
+
+ Returns the composition text. This is a null string for an
+ IMStartEvent, and contains the final accepted string (which may be
+ empty) in the IMEndEvent.
+*/
+
+/*!
+ \fn int QIMEvent::cursorPos() const
+
+ Returns the current cursor position inside the composition string.
+ Will return -1 for IMStartEvent and IMEndEvent.
+*/
+
+/*!
+ \fn int QIMEvent::selectionLength() const
+
+ Returns the number of characters in the composition string (
+ starting at cursorPos() ) that should be marked as selected by the
+ input widget receiving the event.
+ Will return 0 for IMStartEvent and IMEndEvent.
+*/
+
+/*!
+ \fn bool QIMEvent::isAccepted() const
+
+ Returns TRUE if the receiver of the event processed the event;
+ otherwise returns FALSE.
+*/
+
+/*!
+ \fn void QIMEvent::accept()
+
+ Sets the accept flag of the input method event object.
+
+ Setting the accept parameter indicates that the receiver of the
+ event processed the input method event.
+
+ The accept flag is not set by default.
+
+ \sa ignore()
+*/
+
+
+/*!
+ \fn void QIMEvent::ignore()
+
+ Clears the accept flag parameter of the input method event object.
+
+ Clearing the accept parameter indicates that the event receiver
+ does not want the input method event.
+
+ The accept flag is cleared by default.
+
+ \sa accept()
+*/
+
+/*!
+ \class QTabletEvent qevent.h
+ \brief The QTabletEvent class contains parameters that describe a Tablet
+ event.
+
+ \ingroup events
+
+ Tablet Events are generated from a Wacom&copy; tablet. Most of
+ the time you will want to deal with events from the tablet as if
+ they were events from a mouse, for example retrieving the position
+ with x(), y(), pos(), globalX(), globalY() and globalPos(). In
+ some situations you may wish to retrieve the extra information
+ provided by the tablet device driver, for example, you might want
+ to adjust color brightness based on pressure. QTabletEvent allows
+ you to get the pressure(), the xTilt() and yTilt(), as well as the
+ type of device being used with device() (see \l{TabletDevice}).
+
+ A tablet event contains a special accept flag that indicates
+ whether the receiver wants the event. You should call
+ QTabletEvent::accept() if you handle the tablet event; otherwise
+ it will be sent to the parent widget.
+
+ The QWidget::setEnabled() function can be used to enable or
+ disable mouse and keyboard events for a widget.
+
+ The event handler QWidget::tabletEvent() receives all three types of tablet
+ events. Qt will first send a tabletEvent and then, if it is not accepted,
+ it will send a mouse event. This allows applications that don't utilize
+ tablets to use a tablet like a mouse while also enabling those who want to
+ use both tablets and mouses differently.
+
+*/
+
+/*!
+ \enum QTabletEvent::TabletDevice
+
+ This enum defines what type of device is generating the event.
+
+ \value NoDevice No device, or an unknown device.
+ \value Puck A Puck (a device that is similar to a flat mouse with
+ a transparent circle with cross-hairs).
+ \value Stylus A Stylus (the narrow end of the pen).
+ \value Eraser An Eraser (the broad end of the pen).
+ \omit
+ \value Menu A menu button was pressed (currently unimplemented).
+*/
+
+/*!
+ \fn QTabletEvent::QTabletEvent( Type t, const QPoint &pos,
+ const QPoint &globalPos, int device,
+ int pressure, int xTilt, int yTilt,
+ const QPair<int,int> &uId )
+ Construct a tablet event of type \a t. The position of when the event occurred is given
+ int \a pos and \a globalPos. \a device contains the \link TabletDevice device type\endlink,
+ \a pressure contains the pressure exerted on the \a device, \a xTilt and \a yTilt contain
+ \a device's degree of tilt from the X and Y axis respectively. The \a uId contains an
+ event id.
+
+ On Irix, \a globalPos will contain the high-resolution coordinates received from the
+ tablet device driver, instead of from the windowing system.
+
+ \sa pos(), globalPos(), device(), pressure(), xTilt(), yTilt()
+*/
+
+QTabletEvent::QTabletEvent( Type t, const QPoint &pos, const QPoint &globalPos, int device,
+ int pressure, int xTilt, int yTilt,
+ const QPair<int, int> &uId )
+ : QEvent( t ),
+ mPos( pos ),
+ mGPos( globalPos ),
+ mDev( device ),
+ mPress( pressure ),
+ mXT( xTilt ),
+ mYT( yTilt ),
+ mType( uId.first ),
+ mPhy( uId.second ),
+ mbAcc(TRUE)
+{}
+
+/*!
+ \obsolete
+ \fn QTabletEvent::QTabletEvent( const QPoint &pos, const QPoint &globalPos, int device, int pressure, int xTilt, int yTilt, const QPair<int,int> &uId )
+
+ Constructs a tablet event object. The position when the event
+ occurred is is given in \a pos and \a globalPos. \a device
+ contains the \link TabletDevice device type\endlink, \a pressure
+ contains the pressure exerted on the \a device, \a xTilt and \a
+ yTilt contain the \a device's degrees of tilt from the X and Y
+ axis respectively. The \a uId contains an event id.
+
+ On Irix, \a globalPos will contain the high-resolution coordinates
+ received from the tablet device driver, instead of from the
+ windowing system.
+
+ \sa pos(), globalPos(), device(), pressure(), xTilt(), yTilt()
+*/
+
+/*!
+ \fn TabletDevices QTabletEvent::device() const
+
+ Returns the type of device that generated the event. Useful if you
+ want one end of the pen to do something different than the other.
+
+ \sa TabletDevice
+*/
+
+/*!
+ \fn int QTabletEvent::pressure() const
+
+ Returns the pressure that is exerted on the device. This number is
+ a value from 0 (no pressure) to 255 (maximum pressure). The
+ pressure is always scaled to be within this range no matter how
+ many pressure levels the underlying hardware supports.
+*/
+
+/*!
+ \fn int QTabletEvent::xTilt() const
+
+ Returns the difference from the perpendicular in the X Axis.
+ Positive values are towards the tablet's physical right. The angle
+ is in the range -60 to +60 degrees.
+
+ \sa yTilt()
+*/
+
+/*!
+ \fn int QTabletEvent::yTilt() const
+
+ Returns the difference from the perpendicular in the Y Axis.
+ Positive values are towards the bottom of the tablet. The angle is
+ within the range -60 to +60 degrees.
+
+ \sa xTilt()
+*/
+
+/*!
+ \fn const QPoint &QTabletEvent::pos() const
+
+ Returns the position of the device, relative to the widget that
+ received the event.
+
+ If you move widgets around in response to mouse events, use
+ globalPos() instead of this function.
+
+ \sa x(), y(), globalPos()
+*/
+
+/*!
+ \fn int QTabletEvent::x() const
+
+ Returns the x-position of the device, relative to the widget that
+ received the event.
+
+ \sa y(), pos()
+*/
+
+/*!
+ \fn int QTabletEvent::y() const
+
+ Returns the y-position of the device, relative to the widget that
+ received the event.
+
+ \sa x(), pos()
+*/
+
+/*!
+ \fn const QPoint &QTabletEvent::globalPos() const
+
+ Returns the global position of the device \e{at the time of the
+ event}. This is important on asynchronous windows systems like X11;
+ whenever you move your widgets around in response to mouse events,
+ globalPos() can differ significantly from the current position
+ QCursor::pos().
+
+ \sa globalX(), globalY()
+*/
+
+/*!
+ \fn int QTabletEvent::globalX() const
+
+ Returns the global x-position of the mouse pointer at the time of
+ the event.
+
+ \sa globalY(), globalPos()
+*/
+
+/*!
+ \fn int QTabletEvent::globalY() const
+
+ Returns the global y-position of the mouse pointer at the time of
+ the event.
+
+ \sa globalX(), globalPos()
+*/
+
+/*!
+ \fn bool QTabletEvent::isAccepted() const
+
+ Returns TRUE if the receiver of the event handles the tablet
+ event; otherwise returns FALSE.
+*/
+
+/*!
+ \fn void QTabletEvent::accept()
+
+ Sets the accept flag of the tablet event object.
+
+ Setting the accept flag indicates that the receiver of the event
+ wants the tablet event. Unwanted tablet events are sent to the
+ parent widget.
+
+ The accept flag is set by default.
+
+ \sa ignore()
+*/
+
+/*!
+ \fn void QTabletEvent::ignore()
+
+ Clears the accept flag parameter of the tablet event object.
+
+ Clearing the accept flag indicates that the event receiver does
+ not want the tablet event. Unwanted tablet events are sent to the
+ parent widget.
+
+ The accept flag is set by default.
+
+ \sa accept()
+*/
+
+/*!
+ \fn QPair<int, int> QTabletEvent::uniqueId()
+
+ Returns a unique ID for the current device. It is possible to
+ generate a unique ID for any Wacom&copy; device. This makes it
+ possible to differentiate between multiple devices being used at
+ the same time on the tablet. The \c first member contains a value
+ for the type, the \c second member contains a physical ID obtained
+ from the device. Each combination of these values is unique. Note:
+ for different platforms, the \c first value is different due to
+ different driver implementations.
+*/
+
+/*!
+ \class QChildEvent qevent.h
+ \brief The QChildEvent class contains event parameters for child object
+ events.
+
+ \ingroup events
+
+ Child events are sent to objects when children are inserted or
+ removed.
+
+ A \c ChildRemoved event is sent immediately, but a \c
+ ChildInserted event is \e posted (with QApplication::postEvent()).
+
+ Note that if a child is removed immediately after it is inserted,
+ the \c ChildInserted event may be suppressed, but the \c
+ ChildRemoved event will always be sent. In this case there will be
+ a \c ChildRemoved event without a corresponding \c ChildInserted
+ event.
+
+ The handler for these events is QObject::childEvent().
+*/
+
+/*!
+ \fn QChildEvent::QChildEvent( Type type, QObject *child )
+
+ Constructs a child event object. The \a child is the object that
+ is to be removed or inserted.
+
+ The \a type parameter must be either \c QEvent::ChildInserted or
+ \c QEvent::ChildRemoved.
+*/
+
+/*!
+ \fn QObject *QChildEvent::child() const
+
+ Returns the child widget that was inserted or removed.
+*/
+
+/*!
+ \fn bool QChildEvent::inserted() const
+
+ Returns TRUE if the widget received a new child; otherwise returns
+ FALSE.
+*/
+
+/*!
+ \fn bool QChildEvent::removed() const
+
+ Returns TRUE if the object lost a child; otherwise returns FALSE.
+*/
+
+
+
+
+/*!
+ \class QCustomEvent qevent.h
+ \brief The QCustomEvent class provides support for custom events.
+
+ \ingroup events
+
+ QCustomEvent is a generic event class for user-defined events.
+ User defined events can be sent to widgets or other QObject
+ instances using QApplication::postEvent() or
+ QApplication::sendEvent(). Subclasses of QObject can easily
+ receive custom events by implementing the QObject::customEvent()
+ event handler function.
+
+ QCustomEvent objects should be created with a type ID that
+ uniquely identifies the event type. To avoid clashes with the
+ Qt-defined events types, the value should be at least as large as
+ the value of the "User" entry in the QEvent::Type enum.
+
+ QCustomEvent contains a generic void* data member that may be used
+ for transferring event-specific data to the receiver. Note that
+ since events are normally delivered asynchronously, the data
+ pointer, if used, must remain valid until the event has been
+ received and processed.
+
+ QCustomEvent can be used as-is for simple user-defined event
+ types, but normally you will want to make a subclass of it for
+ your event types. In a subclass, you can add data members that are
+ suitable for your event type.
+
+ Example:
+ \code
+ class ColorChangeEvent : public QCustomEvent
+ {
+ public:
+ ColorChangeEvent( QColor color )
+ : QCustomEvent( 65432 ), c( color ) {}
+ QColor color() const { return c; }
+ private:
+ QColor c;
+ };
+
+ // To send an event of this custom event type:
+
+ ColorChangeEvent* ce = new ColorChangeEvent( blue );
+ QApplication::postEvent( receiver, ce ); // Qt will delete it when done
+
+ // To receive an event of this custom event type:
+
+ void MyWidget::customEvent( QCustomEvent * e )
+ {
+ if ( e->type() == 65432 ) { // It must be a ColorChangeEvent
+ ColorChangeEvent* ce = (ColorChangeEvent*)e;
+ newColor = ce->color();
+ }
+ }
+ \endcode
+
+ \sa QWidget::customEvent(), QApplication::notify()
+*/
+
+
+/*!
+ Constructs a custom event object with event type \a type. The
+ value of \a type must be at least as large as QEvent::User. The
+ data pointer is set to 0.
+*/
+
+QCustomEvent::QCustomEvent( int type )
+ : QEvent( (QEvent::Type)type ), d( 0 )
+{
+}
+
+
+/*!
+ \fn QCustomEvent::QCustomEvent( Type type, void *data )
+
+ Constructs a custom event object with the event type \a type and a
+ pointer to \a data. (Note that any int value may safely be cast to
+ QEvent::Type).
+*/
+
+
+/*!
+ \fn void QCustomEvent::setData( void* data )
+
+ Sets the generic data pointer to \a data.
+
+ \sa data()
+*/
+
+/*!
+ \fn void *QCustomEvent::data() const
+
+ Returns a pointer to the generic event data.
+
+ \sa setData()
+*/
+
+
+
+/*!
+ \fn QDragMoveEvent::QDragMoveEvent( const QPoint& pos, Type type )
+
+ Creates a QDragMoveEvent for which the mouse is at point \a pos,
+ and the event is of type \a type.
+
+ \warning Do not create a QDragMoveEvent yourself since these
+ objects rely on Qt's internal state.
+*/
+
+/*!
+ \fn void QDragMoveEvent::accept( const QRect & r )
+
+ The same as accept(), but also notifies that future moves will
+ also be acceptable if they remain within the rectangle \a r on the
+ widget: this can improve performance, but may also be ignored by
+ the underlying system.
+
+ If the rectangle is \link QRect::isEmpty() empty\endlink, then
+ drag move events will be sent continuously. This is useful if the
+ source is scrolling in a timer event.
+*/
+
+/*!
+ \fn void QDragMoveEvent::ignore( const QRect & r)
+
+ The opposite of accept(const QRect&), i.e. says that moves within
+ rectangle \a r are not acceptable (will be ignored).
+*/
+
+/*!
+ \fn QRect QDragMoveEvent::answerRect() const
+
+ Returns the rectangle for which the acceptance of the move event
+ applies.
+*/
+
+
+
+/*!
+ \fn const QPoint& QDropEvent::pos() const
+
+ Returns the position where the drop was made.
+*/
+
+/*!
+ \fn bool QDropEvent::isAccepted () const
+
+ Returns TRUE if the drop target accepts the event; otherwise
+ returns FALSE.
+*/
+
+/*!
+ \fn void QDropEvent::accept(bool y=TRUE)
+
+ Call this function to indicate whether the event provided data
+ which your widget processed. Set \a y to TRUE (the default) if
+ your widget could process the data, otherwise set \a y to FALSE.
+ To get the data, use encodedData(), or preferably, the decode()
+ methods of existing QDragObject subclasses, such as
+ QTextDrag::decode(), or your own subclasses.
+
+ \sa acceptAction()
+*/
+
+/*!
+ \fn void QDropEvent::acceptAction(bool y=TRUE)
+
+ Call this to indicate that the action described by action() is
+ accepted (i.e. if \a y is TRUE, which is the default), not merely
+ the default copy action. If you call acceptAction(TRUE), there is
+ no need to also call accept(TRUE).
+*/
+
+/*!
+ \fn void QDragMoveEvent::accept( bool y )
+ \reimp
+ \internal
+ Remove in 3.0
+*/
+
+/*!
+ \fn void QDragMoveEvent::ignore()
+ \reimp
+ \internal
+ Remove in 3.0
+*/
+
+
+/*!
+ \enum QDropEvent::Action
+
+ This enum describes the action which a source requests that a
+ target perform with dropped data.
+
+ \value Copy The default action. The source simply uses the data
+ provided in the operation.
+ \value Link The source should somehow create a link to the
+ location specified by the data.
+ \value Move The source should somehow move the object from the
+ location specified by the data to a new location.
+ \value Private The target has special knowledge of the MIME type,
+ which the source should respond to in a similar way to
+ a Copy.
+ \value UserAction The source and target can co-operate using
+ special actions. This feature is not currently
+ supported.
+
+ The Link and Move actions only makes sense if the data is a
+ reference, for example, text/uri-list file lists (see QUriDrag).
+*/
+
+/*!
+ \fn void QDropEvent::setAction( Action a )
+
+ Sets the action to \a a. This is used internally, you should not
+ need to call this in your code: the \e source decides the action,
+ not the target.
+*/
+
+/*!
+ \fn Action QDropEvent::action() const
+
+ Returns the Action which the target is requesting to be performed
+ with the data. If your application understands the action and can
+ process the supplied data, call acceptAction(); if your
+ application can process the supplied data but can only perform the
+ Copy action, call accept().
+*/
+
+/*!
+ \fn void QDropEvent::ignore()
+
+ The opposite of accept(), i.e. you have ignored the drop event.
+*/
+
+/*!
+ \fn bool QDropEvent::isActionAccepted () const
+
+ Returns TRUE if the drop action was accepted by the drop site;
+ otherwise returns FALSE.
+*/
+
+
+/*!
+ \fn void QDropEvent::setPoint (const QPoint & np)
+
+ Sets the drop to happen at point \a np. You do not normally need
+ to use this as it will be set internally before your widget
+ receives the drop event.
+*/ // ### here too - what coordinate system?
+
+
+/*!
+ \class QDragEnterEvent qevent.h
+ \brief The QDragEnterEvent class provides an event which is sent to the widget when a drag and drop first drags onto the widget.
+
+ \ingroup events
+ \ingroup draganddrop
+
+ This event is always immediately followed by a QDragMoveEvent, so
+ you only need to respond to one or the other event. This class
+ inherits most of its functionality from QDragMoveEvent, which in
+ turn inherits most of its functionality from QDropEvent.
+
+ \sa QDragLeaveEvent, QDragMoveEvent, QDropEvent
+*/
+
+/*!
+ \fn QDragEnterEvent::QDragEnterEvent (const QPoint & pos)
+
+ Constructs a QDragEnterEvent entering at the given point, \a pos.
+
+ \warning Do not create a QDragEnterEvent yourself since these
+ objects rely on Qt's internal state.
+*/
+
+/*!
+ \class QDragLeaveEvent qevent.h
+ \brief The QDragLeaveEvent class provides an event which is sent to the widget when a drag and drop leaves the widget.
+
+ \ingroup events
+ \ingroup draganddrop
+
+ This event is always preceded by a QDragEnterEvent and a series of
+ \l{QDragMoveEvent}s. It is not sent if a QDropEvent is sent
+ instead.
+
+ \sa QDragEnterEvent, QDragMoveEvent, QDropEvent
+*/
+
+/*!
+ \fn QDragLeaveEvent::QDragLeaveEvent()
+
+ Constructs a QDragLeaveEvent.
+
+ \warning Do not create a QDragLeaveEvent yourself since these
+ objects rely on Qt's internal state.
+*/
+
+/*!
+ \class QHideEvent qevent.h
+ \brief The QHideEvent class provides an event which is sent after a widget is hidden.
+
+ \ingroup events
+
+ This event is sent just before QWidget::hide() returns, and also
+ when a top-level window has been hidden (iconified) by the user.
+
+ If spontaneous() is TRUE the event originated outside the
+ application, i.e. the user hid the window using the window manager
+ controls, either by iconifying the window or by switching to
+ another virtual desktop where the window isn't visible. The window
+ will become hidden but not withdrawn. If the window was iconified,
+ QWidget::isMinimized() returns TRUE.
+
+ \sa QShowEvent
+*/
+
+/*!
+ \fn QHideEvent::QHideEvent()
+
+ Constructs a QHideEvent.
+*/
+
+/*!
+ \class QShowEvent qevent.h
+ \brief The QShowEvent class provides an event which is sent when a widget is shown.
+
+ \ingroup events
+
+ There are two kinds of show events: show events caused by the
+ window system (spontaneous) and internal show events. Spontaneous
+ show events are sent just after the window system shows the
+ window, including after a top-level window has been shown
+ (un-iconified) by the user. Internal show events are delivered
+ just before the widget becomes visible.
+
+ \sa QHideEvent
+*/
+
+/*!
+ \fn QShowEvent::QShowEvent()
+
+ Constructs a QShowEvent.
+*/
+
+
+/*!
+ \fn QByteArray QDropEvent::data(const char* f) const
+
+ \obsolete
+
+ Use QDropEvent::encodedData().
+*/
+
+
+/*!
+ Destroys the event. If it was \link
+ QApplication::postEvent() posted \endlink,
+ it will be removed from the list of events to be posted.
+*/
+
+QEvent::~QEvent()
+{
+ if ( posted && qApp )
+ QApplication::removePostedEvent( this );
+}