<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <!-- /home/espenr/tmp/qt-3.3.8-espenr-2499/qt-x11-free-3.3.8/examples/popup/popup.doc:4 --> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> <title>Popup Widgets</title> <style type="text/css"><!-- fn { margin-left: 1cm; text-indent: -1cm; } a:link { color: #004faf; text-decoration: none } a:visited { color: #672967; text-decoration: none } body { background: #ffffff; color: black; } --></style> </head> <body> <table border="0" cellpadding="0" cellspacing="0" width="100%"> <tr bgcolor="#E5E5E5"> <td valign=center> <a href="index.html"> <font color="#004faf">Home</font></a> | <a href="classes.html"> <font color="#004faf">All Classes</font></a> | <a href="mainclasses.html"> <font color="#004faf">Main Classes</font></a> | <a href="annotated.html"> <font color="#004faf">Annotated</font></a> | <a href="groups.html"> <font color="#004faf">Grouped Classes</font></a> | <a href="functions.html"> <font color="#004faf">Functions</font></a> </td> <td align="right" valign="center"><img src="logo32.png" align="right" width="64" height="32" border="0"></td></tr></table><h1 align=center>Popup Widgets</h1> <p> This example shows how to implement widgets that should pop up. <p> <hr> <p> Header file: <p> <pre>/**************************************************************************** ** $Id: qt/popup.h 3.3.8 edited Jan 11 14:46 $ ** ** Definition of something or other ** ** Created : 979899 ** ** Copyright (C) 1997-2007 Trolltech ASA. All rights reserved. ** ** This file is part of an example program for TQt. This example ** program may be used, distributed and modified without limitation. ** *****************************************************************************/ #ifndef POPUP_H #define POPUP_H #include <<a href="qlabel-h.html">ntqlabel.h</a>> #include <<a href="qpushbutton-h.html">ntqpushbutton.h</a>> #include <<a href="qlineedit-h.html">ntqlineedit.h</a>> class FancyPopup : public <a href="ntqlabel.html">TQLabel</a> { <a href="metaobjects.html#TQ_OBJECT">TQ_OBJECT</a> public: FancyPopup( <a href="ntqwidget.html">TQWidget</a>* parent = 0, const char* name=0); void popup( <a href="ntqwidget.html">TQWidget</a>* parent = 0); protected: virtual void mouseMoveEvent( <a href="qmouseevent.html">TQMouseEvent</a> * ); virtual void mouseReleaseEvent( <a href="qmouseevent.html">TQMouseEvent</a> * ); virtual void closeEvent( <a href="qcloseevent.html">TQCloseEvent</a> * ); private: <a href="ntqwidget.html">TQWidget</a>* popupParent; int moves; }; class Frame : public <a href="ntqframe.html">TQFrame</a> { TQ_OBJECT public: Frame( <a href="ntqwidget.html">TQWidget</a> *parent=0, const char* name=0); protected: private slots: void button1Clicked(); void button2Pressed(); private: <a href="ntqpushbutton.html">TQPushButton</a> *button1; <a href="ntqpushbutton.html">TQPushButton</a> *button2; <a href="ntqframe.html">TQFrame</a>* popup1; FancyPopup* popup2; }; #endif </pre> <p> <hr> <p> Implementation: <p> <pre>/**************************************************************************** ** $Id: qt/popup.cpp 3.3.8 edited Jan 11 14:37 $ ** ** Copyright (C) 1992-2007 Trolltech ASA. All rights reserved. ** ** This file is part of an example program for TQt. This example ** program may be used, distributed and modified without limitation. ** *****************************************************************************/ #include "popup.h" #include <<a href="qapplication-h.html">ntqapplication.h</a>> #include <<a href="qlayout-h.html">ntqlayout.h</a>> <a name="f468"></a>FancyPopup::FancyPopup( <a href="ntqwidget.html">TQWidget</a>* parent, const char* name ): <a href="ntqlabel.html">TQLabel</a>( parent, name, WType_Popup ){ <a href="ntqframe.html#setFrameStyle">setFrameStyle</a>( WinPanel|Raised ); <a href="ntqlabel.html#setAlignment">setAlignment</a>( AlignCenter ); <a href="ntqwidget.html#resize">resize</a>(150,100); moves = 0; <a href="ntqwidget.html#setMouseTracking">setMouseTracking</a>( TRUE ); } <a name="x1620"></a>void FancyPopup::<a href="ntqwidget.html#mouseMoveEvent">mouseMoveEvent</a>( <a href="qmouseevent.html">TQMouseEvent</a> * e){ moves++; <a href="ntqstring.html">TQString</a> s; <a name="x1611"></a> s.<a href="ntqstring.html#sprintf">sprintf</a>("%d/%d", e-><a href="qmouseevent.html#pos">pos</a>().x(), e-><a href="qmouseevent.html#pos">pos</a>().y()); <a name="x1612"></a> if (e-><a href="qmouseevent.html#state">state</a>() & TQMouseEvent::LeftButton) s += " (down)"; <a href="ntqlabel.html#setText">setText</a>(s); } <a name="x1621"></a>void FancyPopup::<a href="ntqwidget.html#mouseReleaseEvent">mouseReleaseEvent</a>( <a href="qmouseevent.html">TQMouseEvent</a> * e){ if (<a href="ntqwidget.html#rect">rect</a>().contains( e-><a href="qmouseevent.html#pos">pos</a>() ) || moves > 5) <a href="ntqwidget.html#close">close</a>(); } <a name="x1617"></a>void FancyPopup::<a href="ntqwidget.html#closeEvent">closeEvent</a>( <a href="qcloseevent.html">TQCloseEvent</a> *e ){ <a name="x1607"></a> e-><a href="qcloseevent.html#accept">accept</a>(); moves = 0; if (!popupParent) return; // remember that we (as a popup) might recieve the mouse release // event instead of the popupParent. This is due to the fact that // the popupParent popped us up in its mousePressEvent handler. To // avoid the button remaining in pressed state we simply send a // faked mouse button release event to it. <a href="qmouseevent.html">TQMouseEvent</a> me( TQEvent::MouseButtonRelease, TQPoint(0,0), TQPoint(0,0), TQMouseEvent::LeftButton, TQMouseEvent::NoButton); <a name="x1602"></a> TQApplication::<a href="ntqapplication.html#sendEvent">sendEvent</a>( popupParent, &me ); } void <a name="f469"></a>FancyPopup::popup( <a href="ntqwidget.html">TQWidget</a>* parent) { popupParent = parent; setText("Move the mouse!"); if (popupParent) <a href="ntqwidget.html#move">move</a>( popupParent->mapToGlobal( popupParent->rect().bottomLeft() ) ); <a href="ntqwidget.html#show">show</a>(); } <a name="f470"></a>Frame::Frame(TQWidget* parent, const char* name): <a href="ntqframe.html">TQFrame</a>(parent, name){ button1 = new <a href="ntqpushbutton.html">TQPushButton</a>("Simple Popup", this); <a href="ntqobject.html#connect">connect</a> ( button1, SIGNAL( <a href="ntqbutton.html#clicked">clicked</a>() ), SLOT( button1Clicked() ) ); button2 = new <a href="ntqpushbutton.html">TQPushButton</a>("Fancy Popup", this); <a name="x1606"></a> <a href="ntqobject.html#connect">connect</a> ( button2, SIGNAL( <a href="ntqbutton.html#pressed">pressed</a>() ), SLOT( button2Pressed() ) ); <a href="qboxlayout.html">TQBoxLayout</a> * l = new <a href="qhboxlayout.html">TQHBoxLayout</a>( this ); <a name="x1627"></a><a name="x1614"></a> button1-><a href="ntqwidget.html#setMaximumSize">setMaximumSize</a>(button1-><a href="ntqwidget.html#sizeHint">sizeHint</a>()); button2-><a href="ntqwidget.html#setMaximumSize">setMaximumSize</a>(button2-><a href="ntqwidget.html#sizeHint">sizeHint</a>()); l-><a href="qboxlayout.html#addWidget">addWidget</a>( button1 ); l-><a href="qboxlayout.html#addWidget">addWidget</a>( button2 ); <a name="x1609"></a> l-><a href="ntqlayout.html#activate">activate</a>(); <a name="x1613"></a>// button1-><a href="ntqwidget.html#setGeometry">setGeometry</a>(20,20,100,30); // button2-><a href="ntqwidget.html#setGeometry">setGeometry</a>(140,20,100,30); <a href="ntqwidget.html#resize">resize</a>(270, 70); //create a very simple popup: it is just composed with other //widget and will be shown after clicking on button1 popup1 = new <a href="ntqframe.html">TQFrame</a>( this ,0, WType_Popup); popup1-><a href="ntqframe.html#setFrameStyle">setFrameStyle</a>( WinPanel|Raised ); popup1-><a href="ntqwidget.html#resize">resize</a>(150,100); <a href="ntqlineedit.html">TQLineEdit</a> *tmpE = new <a href="ntqlineedit.html">TQLineEdit</a>( popup1 ); <a name="x1619"></a><a name="x1610"></a> <a href="ntqobject.html#connect">connect</a>( tmpE, SIGNAL( <a href="ntqlineedit.html#returnPressed">returnPressed</a>() ), popup1, SLOT( <a href="ntqwidget.html#hide">hide</a>() ) ); <a name="x1626"></a> tmpE-><a href="ntqwidget.html#setGeometry">setGeometry</a>(10,10, 130, 30); <a name="x1625"></a> tmpE-><a href="ntqwidget.html#setFocus">setFocus</a>(); <a href="ntqpushbutton.html">TQPushButton</a> *tmpB = new <a href="ntqpushbutton.html">TQPushButton</a>("Click me!", popup1); <a name="x1616"></a> <a href="ntqobject.html#connect">connect</a>( tmpB, SIGNAL( <a href="ntqbutton.html#clicked">clicked</a>() ), popup1, SLOT( <a href="ntqwidget.html#close">close</a>() ) ); tmpB-><a href="ntqwidget.html#setGeometry">setGeometry</a>(10, 50, 130, 30); // the fancier version uses its own class. It will be shown when // pressing button2, so they behavior is more like a modern menu // or toolbar. popup2 = new FancyPopup( this ); // you might also add new widgets to the popup, just like you do // it with any other widget. The next four lines (if not // commented out) will for instance add a line edit widget. // tmpE = new <a href="ntqlineedit.html">TQLineEdit</a>( popup2 ); // tmpE-><a href="ntqwidget.html#setFocus">setFocus</a>(); // connect( tmpE, SIGNAL( <a href="ntqlineedit.html#returnPressed">returnPressed</a>() ), popup2, SLOT( <a href="ntqwidget.html#close">close</a>() ) ); // tmpE-><a href="ntqwidget.html#setGeometry">setGeometry</a>(10, 10, 130, 30); } void <a name="f471"></a>Frame::button1Clicked(){ <a name="x1622"></a><a name="x1618"></a> popup1-><a href="ntqwidget.html#move">move</a>( <a href="ntqwidget.html#mapToGlobal">mapToGlobal</a>( button1-><a href="ntqwidget.html#geometry">geometry</a>().bottomLeft() ) ); <a name="x1628"></a> popup1-><a href="ntqwidget.html#show">show</a>(); } void <a name="f472"></a>Frame::button2Pressed(){ popup2->popup(button2); } int main( int argc, char **argv ) { <a href="ntqapplication.html">TQApplication</a> a(argc,argv); Frame frame; frame.<a href="ntqwidget.html#setCaption">setCaption</a>("TQt Example - Custom Popups"); a.<a href="ntqapplication.html#setMainWidget">setMainWidget</a>(&frame); frame.<a href="ntqwidget.html#show">show</a>(); return a.<a href="ntqapplication.html#exec">exec</a>(); } </pre> <p>See also <a href="examples.html">Examples</a>. <!-- eof --> <p><address><hr><div align=center> <table width=100% cellspacing=0 border=0><tr> <td>Copyright © 2007 <a href="troll.html">Trolltech</a><td align=center><a href="trademarks.html">Trademarks</a> <td align=right><div align=right>TQt 3.3.8</div> </table></div></address></body> </html>