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<td align="right" valign="center"><img src="logo32.png" align="right" width="64" height="32" border="0"></td></tr></table><h1 align=center>TQMessageBox Class Reference</h1>
<p>The TQMessageBox class provides a modal dialog with a short message, an icon, and some buttons.
<a href="#details">More...</a>
<p><tt>#include <<a href="qmessagebox-h.html">qmessagebox.h</a>></tt>
<p>Inherits <a href="qdialog.html">TQDialog</a>.
<p><a href="qmessagebox-members.html">List of all member functions.</a>
<h2>Public Members</h2>
<ul>
<li class=fn>enum <a href="#Icon-enum"><b>Icon</b></a> { NoIcon = 0, Information = 1, Warning = 2, Critical = 3, Question = 4 }</li>
<li class=fn><a href="#TQMessageBox"><b>TQMessageBox</b></a> ( TQWidget * parent = 0, const char * name = 0 )</li>
<li class=fn><a href="#TQMessageBox-2"><b>TQMessageBox</b></a> ( const TQString & caption, const TQString & text, Icon icon, int button0, int button1, int button2, TQWidget * parent = 0, const char * name = 0, bool modal = TRUE, WFlags f = WStyle_DialogBorder )</li>
<li class=fn><a href="#~TQMessageBox"><b>~TQMessageBox</b></a> ()</li>
<li class=fn>TQString <a href="#text"><b>text</b></a> () const</li>
<li class=fn>void <a href="#setText"><b>setText</b></a> ( const TQString & )</li>
<li class=fn>Icon <a href="#icon"><b>icon</b></a> () const</li>
<li class=fn>void <a href="#setIcon"><b>setIcon</b></a> ( Icon )</li>
<li class=fn>const TQPixmap * <a href="#iconPixmap"><b>iconPixmap</b></a> () const</li>
<li class=fn>void <a href="#setIconPixmap"><b>setIconPixmap</b></a> ( const TQPixmap & )</li>
<li class=fn>TQString <a href="#buttonText"><b>buttonText</b></a> ( int button ) const</li>
<li class=fn>void <a href="#setButtonText"><b>setButtonText</b></a> ( int button, const TQString & text )</li>
<li class=fn>virtual void <a href="#adjustSize"><b>adjustSize</b></a> ()</li>
<li class=fn>TextFormat <a href="#textFormat"><b>textFormat</b></a> () const</li>
<li class=fn>void <a href="#setTextFormat"><b>setTextFormat</b></a> ( TextFormat )</li>
</ul>
<h2>Static Public Members</h2>
<ul>
<li class=fn>int <a href="#information"><b>information</b></a> ( TQWidget * parent, const TQString & caption, const TQString & text, int button0, int button1 = 0, int button2 = 0 )</li>
<li class=fn>int <a href="#information-2"><b>information</b></a> ( TQWidget * parent, const TQString & caption, const TQString & text, const TQString & button0Text = TQString::null, const TQString & button1Text = TQString::null, const TQString & button2Text = TQString::null, int defaultButtonNumber = 0, int escapeButtonNumber = -1 )</li>
<li class=fn>int <a href="#question"><b>question</b></a> ( TQWidget * parent, const TQString & caption, const TQString & text, int button0, int button1 = 0, int button2 = 0 )</li>
<li class=fn>int <a href="#question-2"><b>question</b></a> ( TQWidget * parent, const TQString & caption, const TQString & text, const TQString & button0Text = TQString::null, const TQString & button1Text = TQString::null, const TQString & button2Text = TQString::null, int defaultButtonNumber = 0, int escapeButtonNumber = -1 )</li>
<li class=fn>int <a href="#warning"><b>warning</b></a> ( TQWidget * parent, const TQString & caption, const TQString & text, int button0, int button1, int button2 = 0 )</li>
<li class=fn>int <a href="#warning-2"><b>warning</b></a> ( TQWidget * parent, const TQString & caption, const TQString & text, const TQString & button0Text = TQString::null, const TQString & button1Text = TQString::null, const TQString & button2Text = TQString::null, int defaultButtonNumber = 0, int escapeButtonNumber = -1 )</li>
<li class=fn>int <a href="#critical"><b>critical</b></a> ( TQWidget * parent, const TQString & caption, const TQString & text, int button0, int button1, int button2 = 0 )</li>
<li class=fn>int <a href="#critical-2"><b>critical</b></a> ( TQWidget * parent, const TQString & caption, const TQString & text, const TQString & button0Text = TQString::null, const TQString & button1Text = TQString::null, const TQString & button2Text = TQString::null, int defaultButtonNumber = 0, int escapeButtonNumber = -1 )</li>
<li class=fn>void <a href="#about"><b>about</b></a> ( TQWidget * parent, const TQString & caption, const TQString & text )</li>
<li class=fn>void <a href="#aboutTQt"><b>aboutTQt</b></a> ( TQWidget * parent, const TQString & caption = TQString::null )</li>
<li class=fn>int message ( const TQString & caption, const TQString & text, const TQString & buttonText = TQString::null, TQWidget * parent = 0, const char * = 0 ) <em>(obsolete)</em></li>
<li class=fn>bool query ( const TQString & caption, const TQString & text, const TQString & yesButtonText = TQString::null, const TQString & noButtonText = TQString::null, TQWidget * parent = 0, const char * = 0 ) <em>(obsolete)</em></li>
<li class=fn>TQPixmap standardIcon ( Icon icon, GUIStyle style ) <em>(obsolete)</em></li>
<li class=fn>TQPixmap <a href="#standardIcon"><b>standardIcon</b></a> ( Icon icon )</li>
</ul>
<h2>Properties</h2>
<ul>
<li class=fn>Icon <a href="#icon-prop"><b>icon</b></a> - the message box's icon</li>
<li class=fn>TQPixmap <a href="#iconPixmap-prop"><b>iconPixmap</b></a> - the current icon</li>
<li class=fn>TQString <a href="#text-prop"><b>text</b></a> - the message box text to be displayed</li>
<li class=fn>TextFormat <a href="#textFormat-prop"><b>textFormat</b></a> - the format of the text displayed by the message box</li>
</ul>
<hr><a name="details"></a><h2>Detailed Description</h2>
The TQMessageBox class provides a modal dialog with a short message, an icon, and some buttons.
<p> Message boxes are used to provide informative messages and to ask
simple questions.
<p> TQMessageBox provides a range of different messages, arranged
roughly along two axes: severity and complexity.
<p> Severity is
<center><table cellpadding="4" cellspacing="2" border="0">
<tr bgcolor="#f0f0f0">
<td valign="top"><center><img src="qmessagebox-quest.png"></center> <td valign="top">Question
<td valign="top">For message boxes that ask a question as part of normal
operation. Some style guides recommend using Information for this
purpose.
<tr bgcolor="#d0d0d0">
<td valign="top"><center><img src="qmessagebox-info.png"></center> <td valign="top">Information
<td valign="top">For message boxes that are part of normal operation.
<tr bgcolor="#f0f0f0">
<td valign="top"><center><img src="qmessagebox-warn.png"></center> <td valign="top">Warning
<td valign="top">For message boxes that tell the user about unusual errors.
<tr bgcolor="#d0d0d0">
<td valign="top"><center><img src="qmessagebox-crit.png"></center> <td valign="top">Critical
<td valign="top">For message boxes that tell the user about critical errors.
</table></center>
<p> The message box has a different icon for each of the severity levels.
<p> Complexity is one button (OK) for simple messages, or two or even
three buttons for questions.
<p> There are static functions for the most common cases.
<p> Examples:
<p> If a program is unable to find a supporting file, but can do perfectly
well without it:
<p> <pre>
TQMessageBox::<a href="#information">information</a>( this, "Application name",
"Unable to find the user preferences file.\n"
"The factory default will be used instead." );
</pre>
<p> <a href="#question">question</a>() is useful for simple yes/no questions:
<p> <pre>
if ( TQFile::<a href="qfile.html#exists">exists</a>( filename ) &&
TQMessageBox::<a href="#question">question</a>(
this,
<a href="qobject.html#tr">tr</a>("Overwrite File? -- Application Name"),
<a href="qobject.html#tr">tr</a>("A file called %1 already exists."
"Do you want to overwrite it?")
.arg( filename ),
<a href="qobject.html#tr">tr</a>("&Yes"), tr("&No"),
<a href="qstring.html#TQString-null">TQString::null</a>, 0, 1 ) )
return false;
</pre>
<p> <a href="#warning">warning</a>() can be used to tell the user about unusual errors, or
errors which can't be easily fixed:
<p> <pre>
switch( TQMessageBox::<a href="#warning">warning</a>( this, "Application name",
"Could not connect to the <mumble> server.\n"
"This program can't function correctly "
"without the server.\n\n",
"Retry",
"Quit", 0, 0, 1 ) ) {
case 0: // The user clicked the Retry again button or pressed Enter
// try again
break;
case 1: // The user clicked the Quit or pressed Escape
// exit
break;
}
</pre>
<p> The text part of all message box messages can be either rich text
or plain text. If you specify a rich text formatted string, it
will be rendered using the default stylesheet. See
<a href="qstylesheet.html#defaultSheet">TQStyleSheet::defaultSheet</a>() for details. With certain strings that
contain XML meta characters, the auto-rich text detection may
fail, interpreting plain text incorrectly as rich text. In these
rare cases, use <a href="qstylesheet.html#convertFromPlainText">TQStyleSheet::convertFromPlainText</a>() to convert
your plain text string to a visually equivalent rich text string
or set the text format explicitly with <a href="#setTextFormat">setTextFormat</a>().
<p> Note that the Microsoft Windows User Interface Guidelines
recommend using the application name as the window's caption.
<p> Below are more examples of how to use the static member functions.
After these examples you will find an overview of the non-static
member functions.
<p> Exiting a program is part of its normal operation. If there is
unsaved data the user probably should be asked if they want to
save the data. For example:
<p> <pre>
switch( TQMessageBox::<a href="#information">information</a>( this, "Application name here",
"The document contains unsaved changes\n"
"Do you want to save the changes before exiting?",
"&Save", "&Discard", "Cancel",
0, // Enter == button 0
2 ) ) { // Escape == button 2
case 0: // Save clicked or Alt+S pressed or Enter pressed.
// save
break;
case 1: // Discard clicked or Alt+D pressed
// don't save but exit
break;
case 2: // Cancel clicked or Escape pressed
// don't exit
break;
}
</pre>
<p> The Escape button cancels the entire exit operation, and pressing
Enter causes the changes to be saved before the exit occurs.
<p> Disk full errors are unusual and they certainly can be hard to
correct. This example uses predefined buttons instead of
hard-coded button texts:
<p> <pre>
switch( TQMessageBox::<a href="#warning">warning</a>( this, "Application name here",
"Could not save the user preferences,\n"
"because the disk is full. You can delete\n"
"some files and press Retry, or you can\n"
"abort the Save Preferences operation.",
TQMessageBox::Retry | TQMessageBox::Default,
TQMessageBox::Abort | TQMessageBox::Escape )) {
case TQMessageBox::Retry: // Retry clicked or Enter pressed
// try again
break;
case TQMessageBox::Abort: // Abort clicked or Escape pressed
// abort
break;
}
</pre>
<p> The <a href="#critical">critical</a>() function should be reserved for critical errors. In
this example errorDetails is a <a href="qstring.html">TQString</a> or const char*, and TQString
is used to concatenate several strings:
<p> <pre>
TQMessageBox::<a href="#critical">critical</a>( 0, "Application name here",
TQString("An internal error occurred. Please ") +
"call technical support at 1234-56789 and report\n"+
"these numbers:\n\n" + errorDetails +
"\n\nApplication will now exit." );
</pre>
<p> In this example an OK button is displayed.
<p> TQMessageBox provides a very simple About box which displays an
appropriate icon and the string you provide:
<p> <pre>
TQMessageBox::<a href="#about">about</a>( this, "About <Application>",
"<Application> is a <one-paragraph blurb>\n\n"
"Copyright 1991-2003 Such-and-such. "
"<License words here.>\n\n"
"For technical support, call 1234-56789 or see\n"
"http://www.such-and-such.com/Application/\n" );
</pre>
<p> See <a href="#about">about</a>() for more information.
<p> If you want your users to know that the application is built using
TQt (so they know that you use high quality tools) you might like
to add an "About TQt" menu option under the Help menu to invoke
<a href="#aboutTQt">aboutTQt</a>().
<p> If none of the standard message boxes is suitable, you can create a
TQMessageBox from scratch and use custom button texts:
<p> <pre>
TQMessageBox mb( "Application name here",
"Saving the file will overwrite the original file on the disk.\n"
"Do you really want to save?",
TQMessageBox::<a href="#Icon-enum">Information</a>,
TQMessageBox::Yes | TQMessageBox::Default,
TQMessageBox::No,
TQMessageBox::Cancel | TQMessageBox::Escape );
mb.<a href="#setButtonText">setButtonText</a>( TQMessageBox::Yes, "Save" );
mb.<a href="#setButtonText">setButtonText</a>( TQMessageBox::No, "Discard" );
switch( mb.<a href="qdialog.html#exec">exec</a>() ) {
case TQMessageBox::Yes:
// save and exit
break;
case TQMessageBox::No:
// exit without saving
break;
case TQMessageBox::Cancel:
// don't save and don't exit
break;
}
</pre>
<p> TQMessageBox defines two enum types: Icon and an unnamed button type.
Icon defines the <a href="#Icon-enum">Question</a>, <a href="#Icon-enum">Information</a>, <a href="#Icon-enum">Warning</a>, and <a href="#Icon-enum">Critical</a> icons for each GUI style. It is used by the constructor
and by the static member functions <a href="#question">question</a>(), <a href="#information">information</a>(),
<a href="#warning">warning</a>() and <a href="#critical">critical</a>(). A function called <a href="#standardIcon">standardIcon</a>() gives
you access to the various icons.
<p> The button types are:
<ul>
<li> Ok - the default for single-button message boxes
<li> Cancel - note that this is <em>not</em> automatically Escape
<li> Yes
<li> No
<li> Abort
<li> Retry
<li> Ignore
<li> YesAll
<li> NoAll
</ul>
<p> Button types can be combined with two modifiers by using OR, '|':
<ul>
<li> Default - makes pressing Enter equivalent to
clicking this button. Normally used with Ok, Yes or similar.
<li> Escape - makes pressing Escape equivalent to clicking this button.
Normally used with Abort, Cancel or similar.
</ul>
<p> The <a href="#text">text</a>(), <a href="#icon">icon</a>() and <a href="#iconPixmap">iconPixmap</a>() functions provide access to the
current text and pixmap of the message box. The <a href="#setText">setText</a>(), <a href="#setIcon">setIcon</a>()
and <a href="#setIconPixmap">setIconPixmap</a>() let you change it. The difference between
setIcon() and setIconPixmap() is that the former accepts a
TQMessageBox::Icon and can be used to set standard icons, whereas the
latter accepts a <a href="qpixmap.html">TQPixmap</a> and can be used to set custom icons.
<p> <a href="#setButtonText">setButtonText</a>() and <a href="#buttonText">buttonText</a>() provide access to the buttons.
<p> TQMessageBox has no signals or slots.
<p> <img src=qmsgbox-m.png> <img src=qmsgbox-w.png>
<p> <p>See also <a href="qdialog.html">TQDialog</a>, <a href="http://www.iarchitect.com/errormsg.htm
">Isys on error messages</a>, <a href="guibooks.html#fowler">GUI Design Handbook: Message Box</a>, and <a href="dialogs.html">Dialog Classes</a>.
<hr><h2>Member Type Documentation</h2>
<h3 class=fn><a name="Icon-enum"></a>TQMessageBox::Icon</h3>
<p> This enum has the following values:
<ul>
<li><tt>TQMessageBox::NoIcon</tt> - the message box does not have any icon.
<li><tt>TQMessageBox::Question</tt> - an icon indicating that
the message is asking a question.
<li><tt>TQMessageBox::Information</tt> - an icon indicating that
the message is nothing out of the ordinary.
<li><tt>TQMessageBox::Warning</tt> - an icon indicating that the
message is a warning, but can be dealt with.
<li><tt>TQMessageBox::Critical</tt> - an icon indicating that
the message represents a critical problem.
</ul><p>
<hr><h2>Member Function Documentation</h2>
<h3 class=fn><a name="TQMessageBox"></a>TQMessageBox::TQMessageBox ( <a href="qwidget.html">TQWidget</a> * parent = 0, const char * name = 0 )
</h3>
Constructs a message box with no text and a button with the label
"OK".
<p> If <em>parent</em> is 0, the message box becomes an application-global
modal dialog box. If <em>parent</em> is a widget, the message box
becomes modal relative to <em>parent</em>.
<p> The <em>parent</em> and <em>name</em> arguments are passed to the <a href="qdialog.html">TQDialog</a>
constructor.
<h3 class=fn><a name="TQMessageBox-2"></a>TQMessageBox::TQMessageBox ( const <a href="qstring.html">TQString</a> & caption, const <a href="qstring.html">TQString</a> & text, <a href="qmessagebox.html#Icon-enum">Icon</a> icon, int button0, int button1, int button2, <a href="qwidget.html">TQWidget</a> * parent = 0, const char * name = 0, bool modal = TRUE, WFlags f = WStyle_DialogBorder )
</h3>
Constructs a message box with a <em>caption</em>, a <em>text</em>, an <em>icon</em>,
and up to three buttons.
<p> The <em>icon</em> must be one of the following:
<ul>
<li> TQMessageBox::NoIcon
<li> TQMessageBox::Question
<li> TQMessageBox::Information
<li> TQMessageBox::Warning
<li> TQMessageBox::Critical
</ul>
<p> Each button, <em>button0</em>, <em>button1</em> and <em>button2</em>, can have one
of the following values:
<ul>
<li> TQMessageBox::NoButton
<li> TQMessageBox::Ok
<li> TQMessageBox::Cancel
<li> TQMessageBox::Yes
<li> TQMessageBox::No
<li> TQMessageBox::Abort
<li> TQMessageBox::Retry
<li> TQMessageBox::Ignore
<li> TQMessageBox::YesAll
<li> TQMessageBox::NoAll
</ul>
<p> Use TQMessageBox::NoButton for the later parameters to have fewer
than three buttons in your message box. If you don't specify any
buttons at all, TQMessageBox will provide an Ok button.
<p> One of the buttons can be OR-ed with the <tt>TQMessageBox::Default</tt>
flag to make it the default button (clicked when Enter is
pressed).
<p> One of the buttons can be OR-ed with the <tt>TQMessageBox::Escape</tt>
flag to make it the cancel or close button (clicked when Escape is
pressed).
<p> Example:
<pre>
TQMessageBox mb( "Application Name",
"Hardware failure.\n\nDisk error detected\nDo you want to stop?",
TQMessageBox::<a href="#Icon-enum">Question</a>,
TQMessageBox::Yes | TQMessageBox::Default,
TQMessageBox::No | TQMessageBox::Escape,
TQMessageBox::<a href="qt.html#ButtonState-enum">NoButton</a> );
if ( mb.<a href="qdialog.html#exec">exec</a>() == TQMessageBox::No )
// try again
</pre>
<p> If <em>parent</em> is 0, the message box becomes an application-global
modal dialog box. If <em>parent</em> is a widget, the message box
becomes modal relative to <em>parent</em>.
<p> If <em>modal</em> is TRUE the message box is modal; otherwise it
is modeless.
<p> The <em>parent</em>, <em>name</em>, <em>modal</em>, and <em>f</em> arguments are passed to
the <a href="qdialog.html">TQDialog</a> constructor.
<p> <p>See also <a href="qwidget.html#caption-prop">caption</a>, <a href="#text-prop">text</a>, and <a href="#icon-prop">icon</a>.
<h3 class=fn><a name="~TQMessageBox"></a>TQMessageBox::~TQMessageBox ()
</h3>
Destroys the message box.
<h3 class=fn>void <a name="about"></a>TQMessageBox::about ( <a href="qwidget.html">TQWidget</a> * parent, const <a href="qstring.html">TQString</a> & caption, const <a href="qstring.html">TQString</a> & text )<tt> [static]</tt>
</h3>
Displays a simple about box with caption <em>caption</em> and text <em>text</em>. The about box's parent is <em>parent</em>.
<p> <a href="#about">about</a>() looks for a suitable icon in four locations:
<ol type=1>
<li> It prefers <a href="qwidget.html#icon">parent->icon()</a> if that exists.
<li> If not, it tries the top-level widget containing <em>parent</em>.
<li> If that fails, it tries the <a href="qapplication.html#mainWidget">main widget.</a>
<li> As a last resort it uses the Information icon.
</ol>
<p> The about box has a single button labelled "OK".
<p> <p>See also <a href="qwidget.html#icon-prop">TQWidget::icon</a> and <a href="qapplication.html#mainWidget">TQApplication::mainWidget</a>().
<p>Examples: <a href="qaction-application-example.html#x1137">action/application.cpp</a>, <a href="simple-application-example.html#x1555">application/application.cpp</a>, <a href="canvas-chart-example.html#x2886">chart/chartform.cpp</a>, <a href="helpviewer-example.html#x994">helpviewer/helpwindow.cpp</a>, <a href="mdi-example.html#x2036">mdi/application.cpp</a>, <a href="menu-example.html#x1874">menu/menu.cpp</a>, and <a href="themes-example.html#x330">themes/themes.cpp</a>.
<h3 class=fn>void <a name="aboutTQt"></a>TQMessageBox::aboutTQt ( <a href="qwidget.html">TQWidget</a> * parent, const <a href="qstring.html">TQString</a> & caption = TQString::null )<tt> [static]</tt>
</h3>
Displays a simple message box about TQt, with caption <em>caption</em>
and centered over <em>parent</em> (if <em>parent</em> is not 0). The message
includes the version number of TQt being used by the application.
<p> This is useful for inclusion in the Help menu of an application.
See the examples/menu/menu.cpp example.
<p> <a href="qapplication.html">TQApplication</a> provides this functionality as a slot.
<p> <p>See also <a href="qapplication.html#aboutTQt">TQApplication::aboutTQt</a>().
<p>Examples: <a href="qaction-application-example.html#x1138">action/application.cpp</a>, <a href="simple-application-example.html#x1556">application/application.cpp</a>, <a href="canvas-chart-example.html#x2887">chart/chartform.cpp</a>, <a href="helpviewer-example.html#x995">helpviewer/helpwindow.cpp</a>, <a href="menu-example.html#x1875">menu/menu.cpp</a>, <a href="themes-example.html#x331">themes/themes.cpp</a>, and <a href="trivial-nsplugin-example.html#x2736">trivial/trivial.cpp</a>.
<h3 class=fn>void <a name="adjustSize"></a>TQMessageBox::adjustSize ()<tt> [virtual]</tt>
</h3>
Adjusts the size of the message box to fit the contents just before
<a href="qdialog.html#exec">TQDialog::exec</a>() or <a href="qdialog.html#show">TQDialog::show</a>() is called.
<p> This function will not be called if the message box has been explicitly
resized before showing it.
<p>Reimplemented from <a href="qwidget.html#adjustSize">TQWidget</a>.
<h3 class=fn><a href="qstring.html">TQString</a> <a name="buttonText"></a>TQMessageBox::buttonText ( int button ) const
</h3>
Returns the text of the message box button <em>button</em>, or
<a href="qstring.html#TQString-null">TQString::null</a> if the message box does not contain the button.
<p> <p>See also <a href="#setButtonText">setButtonText</a>().
<h3 class=fn>int <a name="critical"></a>TQMessageBox::critical ( <a href="qwidget.html">TQWidget</a> * parent, const <a href="qstring.html">TQString</a> & caption, const <a href="qstring.html">TQString</a> & text, int button0, int button1, int button2 = 0 )<tt> [static]</tt>
</h3>
Opens a critical message box with the caption <em>caption</em> and the
text <em>text</em>. The dialog may have up to three buttons. Each of the
button parameters, <em>button0</em>, <em>button1</em> and <em>button2</em> may be
set to one of the following values:
<p> <ul>
<li> TQMessageBox::NoButton
<li> TQMessageBox::Ok
<li> TQMessageBox::Cancel
<li> TQMessageBox::Yes
<li> TQMessageBox::No
<li> TQMessageBox::Abort
<li> TQMessageBox::Retry
<li> TQMessageBox::Ignore
<li> TQMessageBox::YesAll
<li> TQMessageBox::NoAll
</ul>
<p> If you don't want all three buttons, set the last button, or last
two buttons to TQMessageBox::NoButton.
<p> One button can be OR-ed with <tt>TQMessageBox::Default</tt>, and one
button can be OR-ed with <tt>TQMessageBox::Escape</tt>.
<p> Returns the identity (TQMessageBox::Ok, or TQMessageBox::No, etc.)
of the button that was clicked.
<p> If <em>parent</em> is 0, the message box becomes an application-global
modal dialog box. If <em>parent</em> is a widget, the message box
becomes modal relative to <em>parent</em>.
<p> <p>See also <a href="#information">information</a>(), <a href="#question">question</a>(), and <a href="#warning">warning</a>().
<p>Examples: <a href="archivesearch-example.html#x478">network/archivesearch/archivedialog.ui.h</a>, <a href="ftpclient-example.html#x767">network/ftpclient/ftpmainwindow.ui.h</a>, <a href="process-example.html#x96">process/process.cpp</a>, and <a href="outliner-example.html#x1917">xml/outliner/outlinetree.cpp</a>.
<h3 class=fn>int <a name="critical-2"></a>TQMessageBox::critical ( <a href="qwidget.html">TQWidget</a> * parent, const <a href="qstring.html">TQString</a> & caption, const <a href="qstring.html">TQString</a> & text, const <a href="qstring.html">TQString</a> & button0Text = TQString::null, const <a href="qstring.html">TQString</a> & button1Text = TQString::null, const <a href="qstring.html">TQString</a> & button2Text = TQString::null, int defaultButtonNumber = 0, int escapeButtonNumber = -1 )<tt> [static]</tt>
</h3>
This is an overloaded member function, provided for convenience. It behaves essentially like the above function.
<p> Displays a critical error message box with a caption, a text, and
1, 2 or 3 buttons. Returns the number of the button that was
clicked (0, 1 or 2).
<p> <em>button0Text</em> is the text of the first button, and is optional.
If <em>button0Text</em> is not supplied, "OK" (translated) will be used.
<em>button1Text</em> is the text of the second button, and is optional,
and <em>button2Text</em> is the text of the third button, and is
optional. <em>defaultButtonNumber</em> (0, 1 or 2) is the index of the
default button; pressing Return or Enter is the same as clicking
the default button. It defaults to 0 (the first button). <em>escapeButtonNumber</em> is the index of the Escape button; pressing
Escape is the same as clicking this button. It defaults to -1;
supply 0, 1, or 2 to make pressing Escape equivalent to clicking
the relevant button.
<p> If <em>parent</em> is 0, the message box becomes an application-global
modal dialog box. If <em>parent</em> is a widget, the message box
becomes modal relative to <em>parent</em>.
<p> <p>See also <a href="#information">information</a>(), <a href="#question">question</a>(), and <a href="#warning">warning</a>().
<h3 class=fn><a href="qmessagebox.html#Icon-enum">Icon</a> <a name="icon"></a>TQMessageBox::icon () const
</h3><p>Returns the message box's icon.
See the <a href="qmessagebox.html#icon-prop">"icon"</a> property for details.
<h3 class=fn>const <a href="qpixmap.html">TQPixmap</a> * <a name="iconPixmap"></a>TQMessageBox::iconPixmap () const
</h3><p>Returns the current icon.
See the <a href="qmessagebox.html#iconPixmap-prop">"iconPixmap"</a> property for details.
<h3 class=fn>int <a name="information"></a>TQMessageBox::information ( <a href="qwidget.html">TQWidget</a> * parent, const <a href="qstring.html">TQString</a> & caption, const <a href="qstring.html">TQString</a> & text, int button0, int button1 = 0, int button2 = 0 )<tt> [static]</tt>
</h3>
Opens an information message box with the caption <em>caption</em> and
the text <em>text</em>. The dialog may have up to three buttons. Each of
the buttons, <em>button0</em>, <em>button1</em> and <em>button2</em> may be set to
one of the following values:
<p> <ul>
<li> TQMessageBox::NoButton
<li> TQMessageBox::Ok
<li> TQMessageBox::Cancel
<li> TQMessageBox::Yes
<li> TQMessageBox::No
<li> TQMessageBox::Abort
<li> TQMessageBox::Retry
<li> TQMessageBox::Ignore
<li> TQMessageBox::YesAll
<li> TQMessageBox::NoAll
</ul>
<p> If you don't want all three buttons, set the last button, or last
two buttons to TQMessageBox::NoButton.
<p> One button can be OR-ed with <tt>TQMessageBox::Default</tt>, and one
button can be OR-ed with <tt>TQMessageBox::Escape</tt>.
<p> Returns the identity (TQMessageBox::Ok, or TQMessageBox::No, etc.)
of the button that was clicked.
<p> If <em>parent</em> is 0, the message box becomes an application-global
modal dialog box. If <em>parent</em> is a widget, the message box
becomes modal relative to <em>parent</em>.
<p> <p>See also <a href="#question">question</a>(), <a href="#warning">warning</a>(), and <a href="#critical">critical</a>().
<p>Examples: <a href="qaction-application-example.html#x1139">action/application.cpp</a>, <a href="simple-application-example.html#x1557">application/application.cpp</a>, <a href="dirview-example.html#x1695">dirview/dirview.cpp</a>, <a href="fileiconview-example.html#x859">fileiconview/qfileiconview.cpp</a>, <a href="picture-example.html#x110">picture/picture.cpp</a>, <a href="qwerty-example.html#x373">qwerty/qwerty.cpp</a>, and <a href="qaxserver-example-simple.html#x2524">simple/main.cpp</a>.
<h3 class=fn>int <a name="information-2"></a>TQMessageBox::information ( <a href="qwidget.html">TQWidget</a> * parent, const <a href="qstring.html">TQString</a> & caption, const <a href="qstring.html">TQString</a> & text, const <a href="qstring.html">TQString</a> & button0Text = TQString::null, const <a href="qstring.html">TQString</a> & button1Text = TQString::null, const <a href="qstring.html">TQString</a> & button2Text = TQString::null, int defaultButtonNumber = 0, int escapeButtonNumber = -1 )<tt> [static]</tt>
</h3>
This is an overloaded member function, provided for convenience. It behaves essentially like the above function.
<p> Displays an information message box with caption <em>caption</em>, text
<em>text</em> and one, two or three buttons. Returns the index of the
button that was clicked (0, 1 or 2).
<p> <em>button0Text</em> is the text of the first button, and is optional.
If <em>button0Text</em> is not supplied, "OK" (translated) will be used.
<em>button1Text</em> is the text of the second button, and is optional.
<em>button2Text</em> is the text of the third button, and is optional.
<em>defaultButtonNumber</em> (0, 1 or 2) is the index of the default
button; pressing Return or Enter is the same as clicking the
default button. It defaults to 0 (the first button). <em>escapeButtonNumber</em> is the index of the Escape button; pressing
Escape is the same as clicking this button. It defaults to -1;
supply 0, 1 or 2 to make pressing Escape equivalent to clicking
the relevant button.
<p> If <em>parent</em> is 0, the message box becomes an application-global
modal dialog box. If <em>parent</em> is a widget, the message box
becomes modal relative to <em>parent</em>.
<p> Note: If you do not specify an Escape button then if the Escape
button is pressed then -1 will be returned. It is suggested that
you specify an Escape button to prevent this from happening.
<p> <p>See also <a href="#question">question</a>(), <a href="#warning">warning</a>(), and <a href="#critical">critical</a>().
<h3 class=fn>int <a name="message"></a>TQMessageBox::message ( const <a href="qstring.html">TQString</a> & caption, const <a href="qstring.html">TQString</a> & text, const <a href="qstring.html">TQString</a> & buttonText = TQString::null, <a href="qwidget.html">TQWidget</a> * parent = 0, const char * = 0 )<tt> [static]</tt>
</h3>
<b>This function is obsolete.</b> It is provided to keep old source working. We strongly advise against using it in new code.
<p> Opens a modal message box directly using the specified parameters.
<p> Please use <a href="#information">information</a>(), <a href="#warning">warning</a>(), <a href="#question">question</a>(), or <a href="#critical">critical</a>() instead.
<p>Example: <a href="grapher-nsplugin-example.html#x2750">grapher/grapher.cpp</a>.
<h3 class=fn>bool <a name="query"></a>TQMessageBox::query ( const <a href="qstring.html">TQString</a> & caption, const <a href="qstring.html">TQString</a> & text, const <a href="qstring.html">TQString</a> & yesButtonText = TQString::null, const <a href="qstring.html">TQString</a> & noButtonText = TQString::null, <a href="qwidget.html">TQWidget</a> * parent = 0, const char * = 0 )<tt> [static]</tt>
</h3>
<b>This function is obsolete.</b> It is provided to keep old source working. We strongly advise against using it in new code.
<p> Queries the user using a modal message box with two buttons.
Note that <em>caption</em> is not always shown, it depends on the window manager.
<p> Please use <a href="#information">information</a>(), <a href="#question">question</a>(), <a href="#warning">warning</a>(), or <a href="#critical">critical</a>() instead.
<h3 class=fn>int <a name="question"></a>TQMessageBox::question ( <a href="qwidget.html">TQWidget</a> * parent, const <a href="qstring.html">TQString</a> & caption, const <a href="qstring.html">TQString</a> & text, int button0, int button1 = 0, int button2 = 0 )<tt> [static]</tt>
</h3>
Opens a question message box with the caption <em>caption</em> and the
text <em>text</em>. The dialog may have up to three buttons. Each of the
buttons, <em>button0</em>, <em>button1</em> and <em>button2</em> may be set to one
of the following values:
<p> <ul>
<li> TQMessageBox::NoButton
<li> TQMessageBox::Ok
<li> TQMessageBox::Cancel
<li> TQMessageBox::Yes
<li> TQMessageBox::No
<li> TQMessageBox::Abort
<li> TQMessageBox::Retry
<li> TQMessageBox::Ignore
<li> TQMessageBox::YesAll
<li> TQMessageBox::NoAll
</ul>
<p> If you don't want all three buttons, set the last button, or last
two buttons to TQMessageBox::NoButton.
<p> One button can be OR-ed with <tt>TQMessageBox::Default</tt>, and one
button can be OR-ed with <tt>TQMessageBox::Escape</tt>.
<p> Returns the identity (TQMessageBox::Yes, or TQMessageBox::No, etc.)
of the button that was clicked.
<p> If <em>parent</em> is 0, the message box becomes an application-global
modal dialog box. If <em>parent</em> is a widget, the message box
becomes modal relative to <em>parent</em>.
<p> <p>See also <a href="#information">information</a>(), <a href="#warning">warning</a>(), and <a href="#critical">critical</a>().
<h3 class=fn>int <a name="question-2"></a>TQMessageBox::question ( <a href="qwidget.html">TQWidget</a> * parent, const <a href="qstring.html">TQString</a> & caption, const <a href="qstring.html">TQString</a> & text, const <a href="qstring.html">TQString</a> & button0Text = TQString::null, const <a href="qstring.html">TQString</a> & button1Text = TQString::null, const <a href="qstring.html">TQString</a> & button2Text = TQString::null, int defaultButtonNumber = 0, int escapeButtonNumber = -1 )<tt> [static]</tt>
</h3>
This is an overloaded member function, provided for convenience. It behaves essentially like the above function.
<p> Displays a question message box with caption <em>caption</em>, text <em>text</em> and one, two or three buttons. Returns the index of the
button that was clicked (0, 1 or 2).
<p> <em>button0Text</em> is the text of the first button, and is optional.
If <em>button0Text</em> is not supplied, "OK" (translated) will be used.
<em>button1Text</em> is the text of the second button, and is optional.
<em>button2Text</em> is the text of the third button, and is optional.
<em>defaultButtonNumber</em> (0, 1 or 2) is the index of the default
button; pressing Return or Enter is the same as clicking the
default button. It defaults to 0 (the first button). <em>escapeButtonNumber</em> is the index of the Escape button; pressing
Escape is the same as clicking this button. It defaults to -1;
supply 0, 1 or 2 to make pressing Escape equivalent to clicking
the relevant button.
<p> If <em>parent</em> is 0, the message box becomes an application-global
modal dialog box. If <em>parent</em> is a widget, the message box
becomes modal relative to <em>parent</em>.
<p> Note: If you do not specify an Escape button then if the Escape
button is pressed then -1 will be returned. It is suggested that
you specify an Escape button to prevent this from happening.
<p> <p>See also <a href="#information">information</a>(), <a href="#warning">warning</a>(), and <a href="#critical">critical</a>().
<h3 class=fn>void <a name="setButtonText"></a>TQMessageBox::setButtonText ( int button, const <a href="qstring.html">TQString</a> & text )
</h3>
Sets the text of the message box button <em>button</em> to <em>text</em>.
Setting the text of a button that is not in the message box is
silently ignored.
<p> <p>See also <a href="#buttonText">buttonText</a>().
<h3 class=fn>void <a name="setIcon"></a>TQMessageBox::setIcon ( <a href="qmessagebox.html#Icon-enum">Icon</a> )
</h3><p>Sets the message box's icon.
See the <a href="qmessagebox.html#icon-prop">"icon"</a> property for details.
<h3 class=fn>void <a name="setIconPixmap"></a>TQMessageBox::setIconPixmap ( const <a href="qpixmap.html">TQPixmap</a> & )
</h3><p>Sets the current icon.
See the <a href="qmessagebox.html#iconPixmap-prop">"iconPixmap"</a> property for details.
<h3 class=fn>void <a name="setText"></a>TQMessageBox::setText ( const <a href="qstring.html">TQString</a> & )
</h3><p>Sets the message box text to be displayed.
See the <a href="qmessagebox.html#text-prop">"text"</a> property for details.
<h3 class=fn>void <a name="setTextFormat"></a>TQMessageBox::setTextFormat ( <a href="qt.html#TextFormat-enum">TextFormat</a> )
</h3><p>Sets the format of the text displayed by the message box.
See the <a href="qmessagebox.html#textFormat-prop">"textFormat"</a> property for details.
<h3 class=fn><a href="qpixmap.html">TQPixmap</a> <a name="standardIcon"></a>TQMessageBox::standardIcon ( <a href="qmessagebox.html#Icon-enum">Icon</a> icon )<tt> [static]</tt>
</h3>
Returns the pixmap used for a standard icon. This allows the
pixmaps to be used in more complex message boxes. <em>icon</em>
specifies the retquired icon, e.g. TQMessageBox::Question,
TQMessageBox::Information, TQMessageBox::Warning or
TQMessageBox::Critical.
<h3 class=fn><a href="qpixmap.html">TQPixmap</a> <a name="standardIcon-2"></a>TQMessageBox::standardIcon ( <a href="qmessagebox.html#Icon-enum">Icon</a> icon, <a href="qt.html#GUIStyle-enum">GUIStyle</a> style )<tt> [static]</tt>
</h3>
<b>This function is obsolete.</b> It is provided to keep old source working. We strongly advise against using it in new code.
<p> Returns the pixmap used for a standard icon. This
allows the pixmaps to be used in more complex message boxes.
<em>icon</em> specifies the retquired icon, e.g. TQMessageBox::Information,
TQMessageBox::Warning or TQMessageBox::Critical.
<p> <em>style</em> is unused.
<h3 class=fn><a href="qstring.html">TQString</a> <a name="text"></a>TQMessageBox::text () const
</h3><p>Returns the message box text to be displayed.
See the <a href="qmessagebox.html#text-prop">"text"</a> property for details.
<h3 class=fn><a href="qt.html#TextFormat-enum">TextFormat</a> <a name="textFormat"></a>TQMessageBox::textFormat () const
</h3><p>Returns the format of the text displayed by the message box.
See the <a href="qmessagebox.html#textFormat-prop">"textFormat"</a> property for details.
<h3 class=fn>int <a name="warning"></a>TQMessageBox::warning ( <a href="qwidget.html">TQWidget</a> * parent, const <a href="qstring.html">TQString</a> & caption, const <a href="qstring.html">TQString</a> & text, int button0, int button1, int button2 = 0 )<tt> [static]</tt>
</h3>
Opens a warning message box with the caption <em>caption</em> and the
text <em>text</em>. The dialog may have up to three buttons. Each of the
button parameters, <em>button0</em>, <em>button1</em> and <em>button2</em> may be
set to one of the following values:
<p> <ul>
<li> TQMessageBox::NoButton
<li> TQMessageBox::Ok
<li> TQMessageBox::Cancel
<li> TQMessageBox::Yes
<li> TQMessageBox::No
<li> TQMessageBox::Abort
<li> TQMessageBox::Retry
<li> TQMessageBox::Ignore
<li> TQMessageBox::YesAll
<li> TQMessageBox::NoAll
</ul>
<p> If you don't want all three buttons, set the last button, or last
two buttons to TQMessageBox::NoButton.
<p> One button can be OR-ed with <tt>TQMessageBox::Default</tt>, and one
button can be OR-ed with <tt>TQMessageBox::Escape</tt>.
<p> Returns the identity (TQMessageBox::Ok, or TQMessageBox::No, etc.)
of the button that was clicked.
<p> If <em>parent</em> is 0, the message box becomes an application-global
modal dialog box. If <em>parent</em> is a widget, the message box
becomes modal relative to <em>parent</em>.
<p> <p>See also <a href="#information">information</a>(), <a href="#question">question</a>(), and <a href="#critical">critical</a>().
<p>Examples: <a href="tutorial2-05.html#x2566">chart/chartform.cpp</a>, <a href="i18n-example.html#x1940">i18n/main.cpp</a>, <a href="mail-example.html#x708">network/mail/smtp.cpp</a>, <a href="qwerty-example.html#x374">qwerty/qwerty.cpp</a>, <a href="showimg-example.html#x1333">showimg/showimg.cpp</a>, and <a href="sound-example.html#x2812">sound/sound.cpp</a>.
<h3 class=fn>int <a name="warning-2"></a>TQMessageBox::warning ( <a href="qwidget.html">TQWidget</a> * parent, const <a href="qstring.html">TQString</a> & caption, const <a href="qstring.html">TQString</a> & text, const <a href="qstring.html">TQString</a> & button0Text = TQString::null, const <a href="qstring.html">TQString</a> & button1Text = TQString::null, const <a href="qstring.html">TQString</a> & button2Text = TQString::null, int defaultButtonNumber = 0, int escapeButtonNumber = -1 )<tt> [static]</tt>
</h3>
This is an overloaded member function, provided for convenience. It behaves essentially like the above function.
<p> Displays a warning message box with a caption, a text, and 1, 2 or
3 buttons. Returns the number of the button that was clicked (0,
1, or 2).
<p> <em>button0Text</em> is the text of the first button, and is optional.
If <em>button0Text</em> is not supplied, "OK" (translated) will be used.
<em>button1Text</em> is the text of the second button, and is optional,
and <em>button2Text</em> is the text of the third button, and is
optional. <em>defaultButtonNumber</em> (0, 1 or 2) is the index of the
default button; pressing Return or Enter is the same as clicking
the default button. It defaults to 0 (the first button). <em>escapeButtonNumber</em> is the index of the Escape button; pressing
Escape is the same as clicking this button. It defaults to -1;
supply 0, 1, or 2 to make pressing Escape equivalent to clicking
the relevant button.
<p> If <em>parent</em> is 0, the message box becomes an application-global
modal dialog box. If <em>parent</em> is a widget, the message box
becomes modal relative to <em>parent</em>.
<p> Note: If you do not specify an Escape button then if the Escape
button is pressed then -1 will be returned. It is suggested that
you specify an Escape button to prevent this from happening.
<p> <p>See also <a href="#information">information</a>(), <a href="#question">question</a>(), and <a href="#critical">critical</a>().
<hr><h2>Property Documentation</h2>
<h3 class=fn><a href="qmessagebox.html#Icon-enum">Icon</a> <a name="icon-prop"></a>icon</h3>
<p>This property holds the message box's icon.
<p>The icon of the message box can be one of the following predefined
icons:
<ul>
<li> TQMessageBox::NoIcon
<li> TQMessageBox::Question
<li> TQMessageBox::Information
<li> TQMessageBox::Warning
<li> TQMessageBox::Critical
</ul>
<p> The actual pixmap used for displaying the icon depends on the
current <a href="qwidget.html#style">GUI style</a>. You can also set
a custom pixmap icon using the <a href="#iconPixmap-prop">TQMessageBox::iconPixmap</a>
property. The default icon is TQMessageBox::NoIcon.
<p> <p>See also <a href="#iconPixmap-prop">iconPixmap</a>.
<p>Set this property's value with <a href="#setIcon">setIcon</a>() and get this property's value with <a href="#icon">icon</a>().
<h3 class=fn><a href="qpixmap.html">TQPixmap</a> <a name="iconPixmap-prop"></a>iconPixmap</h3>
<p>This property holds the current icon.
<p>The icon currently used by the message box. Note that it's often
hard to draw one pixmap that looks appropriate in both <a href="motif-extension.html#Motif">Motif</a> and
Windows GUI styles; you may want to draw two pixmaps.
<p> <p>See also <a href="#icon-prop">icon</a>.
<p>Set this property's value with <a href="#setIconPixmap">setIconPixmap</a>() and get this property's value with <a href="#iconPixmap">iconPixmap</a>().
<h3 class=fn><a href="qstring.html">TQString</a> <a name="text-prop"></a>text</h3>
<p>This property holds the message box text to be displayed.
<p>The text will be interpreted either as a plain text or as rich
text, depending on the text format setting (<a href="#textFormat-prop">TQMessageBox::textFormat</a>). The default setting is <a href="qt.html#TextFormat-enum">AutoText</a>, i.e.
the message box will try to auto-detect the format of the text.
<p> The default value of this property is <a href="qstring.html#TQString-null">TQString::null</a>.
<p> <p>See also <a href="#textFormat-prop">textFormat</a>.
<p>Set this property's value with <a href="#setText">setText</a>() and get this property's value with <a href="#text">text</a>().
<h3 class=fn><a href="qt.html#TextFormat-enum">TextFormat</a> <a name="textFormat-prop"></a>textFormat</h3>
<p>This property holds the format of the text displayed by the message box.
<p>The current text format used by the message box. See the <a href="qt.html#TextFormat-enum">TQt::TextFormat</a> enum for an explanation of the possible options.
<p> The default format is <a href="qt.html#TextFormat-enum">AutoText</a>.
<p> <p>See also <a href="#text-prop">text</a>.
<p>Set this property's value with <a href="#setTextFormat">setTextFormat</a>() and get this property's value with <a href="#textFormat">textFormat</a>().
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