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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<div class="navpath"><a class="el" href="namespaceWt.html">Wt</a>::<a class="el" href="classWt_1_1WMessageBox.html">WMessageBox</a>
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<h1>Wt::WMessageBox Class Reference</h1><!-- doxytag: class="Wt::WMessageBox" --><!-- doxytag: inherits="Wt::WDialog" -->A standard dialog for confirmation or to get simple user input.
<a href="#_details">More...</a>
<p>
<code>#include <Wt/WMessageBox></code>
<p>
<div class="dynheader">
Inheritance diagram for Wt::WMessageBox:</div>
<div class="dynsection">
<p><center><img src="classWt_1_1WMessageBox__inherit__graph.png" border="0" usemap="#Wt_1_1WMessageBox__inherit__map" alt="Inheritance graph"></center>
<map name="Wt_1_1WMessageBox__inherit__map">
<area shape="rect" href="classWt_1_1WDialog.html" title="A WDialog shows a dialog." alt="" coords="39,229,132,256"><area shape="rect" href="classWt_1_1WCompositeWidget.html" title="A widget that hides the implementation of composite widgets." alt="" coords="5,155,165,181"><area shape="rect" href="classWt_1_1WWidget.html" title="The abstract base class for a user-interface component." alt="" coords="37,80,133,107"><area shape="rect" href="classWt_1_1WObject.html" title="A base class for objects that participate in the signal/slot system." alt="" coords="37,5,133,32"></map>
<center><font size="2">[<a href="graph_legend.html">legend</a>]</font></center></div>
<p>
<a href="classWt_1_1WMessageBox-members.html">List of all members.</a><table border="0" cellpadding="0" cellspacing="0">
<tr><td></td></tr>
<tr><td colspan="2"><br><h2>Public Member Functions</h2></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WMessageBox.html#2a6c97b72f842051e129ff3140fba0c2">WMessageBox</a> (bool i18n=false)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Creates an empty message box. <a href="#2a6c97b72f842051e129ff3140fba0c2"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WMessageBox.html#056accb0659a412e0aace3be3d449f7a">WMessageBox</a> (const <a class="el" href="classWt_1_1WString.html">WString</a> &caption, const <a class="el" href="classWt_1_1WString.html">WString</a> &text, <a class="el" href="namespaceWt.html#aa26ad9f143951595691fbd604567f5f">Icon</a> icon, WFlags< <a class="el" href="namespaceWt.html#270a5e1af09979a6559f0f39e3d93062">StandardButton</a> > buttons, bool i18n=false)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Creates a message box with given caption, text, icon, and buttons. <a href="#056accb0659a412e0aace3be3d449f7a"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="ef66b54dc12ec478e218d561880254e8"></a><!-- doxytag: member="Wt::WMessageBox::setText" ref="ef66b54dc12ec478e218d561880254e8" args="(const WString &text)" -->
void </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WMessageBox.html#ef66b54dc12ec478e218d561880254e8">setText</a> (const <a class="el" href="classWt_1_1WString.html">WString</a> &text)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Sets the text for the message box. <br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="1e1dffabe0d91e84f6f504ffb600c4a0"></a><!-- doxytag: member="Wt::WMessageBox::text" ref="1e1dffabe0d91e84f6f504ffb600c4a0" args="() const " -->
const <a class="el" href="classWt_1_1WString.html">WString</a> & </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WMessageBox.html#1e1dffabe0d91e84f6f504ffb600c4a0">text</a> () const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Returns the message box text. <br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="el" href="classWt_1_1WText.html">WText</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WMessageBox.html#da70275e7f0d9fc067cd5a1c553a031f">textWidget</a> () const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Returns the text widget. <a href="#da70275e7f0d9fc067cd5a1c553a031f"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="194dc23e212770e494d459f2426f9ae8"></a><!-- doxytag: member="Wt::WMessageBox::setIcon" ref="194dc23e212770e494d459f2426f9ae8" args="(Icon icon)" -->
void </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WMessageBox.html#194dc23e212770e494d459f2426f9ae8">setIcon</a> (<a class="el" href="namespaceWt.html#aa26ad9f143951595691fbd604567f5f">Icon</a> icon)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Sets the icon. <br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="0ff9580eedf4a3e6b74f27eae71e23ff"></a><!-- doxytag: member="Wt::WMessageBox::icon" ref="0ff9580eedf4a3e6b74f27eae71e23ff" args="() const " -->
<a class="el" href="namespaceWt.html#aa26ad9f143951595691fbd604567f5f">Icon</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WMessageBox.html#0ff9580eedf4a3e6b74f27eae71e23ff">icon</a> () const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Returns the icon. <br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="el" href="classWt_1_1WPushButton.html">WPushButton</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WMessageBox.html#9d07bb99d17c38128c79f9c7ecd42963">addButton</a> (const <a class="el" href="classWt_1_1WString.html">WString</a> &text, <a class="el" href="namespaceWt.html#270a5e1af09979a6559f0f39e3d93062">StandardButton</a> result)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Add a custom button with given text. <a href="#9d07bb99d17c38128c79f9c7ecd42963"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="1757ee241b2df0045623a6bcad707dc6"></a><!-- doxytag: member="Wt::WMessageBox::setButtons" ref="1757ee241b2df0045623a6bcad707dc6" args="(WFlags< StandardButton > buttons)" -->
void </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WMessageBox.html#1757ee241b2df0045623a6bcad707dc6">setButtons</a> (WFlags< <a class="el" href="namespaceWt.html#270a5e1af09979a6559f0f39e3d93062">StandardButton</a> > buttons)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Sets standard buttons for the message box. <br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="71c9a2cce4be7c3a5e33718c8ec924c1"></a><!-- doxytag: member="Wt::WMessageBox::buttons" ref="71c9a2cce4be7c3a5e33718c8ec924c1" args="() const " -->
WFlags< <a class="el" href="namespaceWt.html#270a5e1af09979a6559f0f39e3d93062">StandardButton</a> > </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WMessageBox.html#71c9a2cce4be7c3a5e33718c8ec924c1">buttons</a> () const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Returns the standard buttons. <br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="el" href="classWt_1_1WPushButton.html">WPushButton</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WMessageBox.html#0e95f906d321b5c5cb574abc25716aec">button</a> (<a class="el" href="namespaceWt.html#270a5e1af09979a6559f0f39e3d93062">StandardButton</a> b)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Returns the button widget for the given standard button. <a href="#0e95f906d321b5c5cb574abc25716aec"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="el" href="namespaceWt.html#270a5e1af09979a6559f0f39e3d93062">StandardButton</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WMessageBox.html#c07ce4dd360c8305cdc1e08642e32a7c">buttonResult</a> ()</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Returns the result of this message box. <a href="#c07ce4dd360c8305cdc1e08642e32a7c"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="e9d2caaa82244b2b195e9d3e011bc740"></a><!-- doxytag: member="Wt::WMessageBox::buttonClicked" ref="e9d2caaa82244b2b195e9d3e011bc740" args="()" -->
<a class="el" href="classWt_1_1Signal.html">Signal</a>< <a class="el" href="namespaceWt.html#270a5e1af09979a6559f0f39e3d93062">StandardButton</a> > & </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WMessageBox.html#e9d2caaa82244b2b195e9d3e011bc740">buttonClicked</a> ()</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Signal emitted when a button is clicked. <br></td></tr>
<tr><td colspan="2"><br><h2>Static Public Member Functions</h2></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">static <a class="el" href="namespaceWt.html#270a5e1af09979a6559f0f39e3d93062">StandardButton</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WMessageBox.html#cacb6ec745e3fab2833f712994bce9db">show</a> (const <a class="el" href="classWt_1_1WString.html">WString</a> &caption, const <a class="el" href="classWt_1_1WString.html">WString</a> &text, WFlags< <a class="el" href="namespaceWt.html#270a5e1af09979a6559f0f39e3d93062">StandardButton</a> > buttons, bool i18n=false)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Convenience method to show a message box, blocking the current thread. <a href="#cacb6ec745e3fab2833f712994bce9db"></a><br></td></tr>
</table>
<hr><a name="_details"></a><h2>Detailed Description</h2>
A standard dialog for confirmation or to get simple user input.
<p>
The message box shows a message in a dialog window, with a number of buttons. These buttons may be standard buttons, or customized.<p>
There are two distinct ways for using a WMessageBox, which reflect the two ways of dealing with a <a class="el" href="classWt_1_1WDialog.html" title="A WDialog shows a dialog.">WDialog</a> box.<p>
The easiest way is using the static <a class="el" href="classWt_1_1WWidget.html#52dcef5a385ddfa0a8c3e6c20000f181" title="Shows the widget.">show()</a> method, which shows a message box, blocks the current thread, and returns the button that was pressed by the user. Since this uses the <a class="el" href="classWt_1_1WDialog.html#e56cf798aba9f09a8869df50d3f334a6" title="Executes the dialog in a recursive event loop.">WDialog::exec()</a>, it suffers from the same scalability issues.<p>
The more elaborate way is by creating a <a class="el" href="classWt_1_1WMessageBox.html" title="A standard dialog for confirmation or to get simple user input.">WMessageBox</a>, and connecting the buttonClicked signal to a method. This method then interpretes the result and deletes the message box.<p>
Example code (using the <a class="el" href="classWt_1_1WDialog.html#e56cf798aba9f09a8869df50d3f334a6" title="Executes the dialog in a recursive event loop.">exec()</a> method): <div class="fragment"><pre class="fragment"> <a class="code" href="namespaceWt.html#270a5e1af09979a6559f0f39e3d93062" title="Enumeration that indicates a standard button.">StandardButton</a>
<a class="code" href="classWt_1_1WDialog.html#469ba179a2d620e2f7f6e0142f891c27" title="Returns the result that was set for this dialog.">result</a> = <a class="code" href="classWt_1_1WWidget.html#52dcef5a385ddfa0a8c3e6c20000f181" title="Shows the widget.">WMessageBox::show</a>(<span class="stringliteral">"Confirm"</span>, <span class="stringliteral">"About to wreak havoc... Continue ?"</span>,
<a class="code" href="namespaceWt.html#270a5e1af09979a6559f0f39e3d93062f92b793210df9123b9be1ee11dd0d36d" title="An OK button.">Ok</a> | <a class="code" href="namespaceWt.html#270a5e1af09979a6559f0f39e3d93062c31abea0685e68a0e116038d0ad48ca8" title="A Cancel button.">Cancel</a>);
</pre></div><p>
This will show a message box that looks like this:<p>
<table border="0" align="center" cellspacing="3" cellpadding="3">
<tr>
<td><div align="center">
<img src="WMessageBox-default-1.png" alt="WMessageBox-default-1.png">
<p><strong>Example of a WMessageBox (default)</strong></p></div>
</td><td><div align="center">
<img src="WMessageBox-polished-1.png" alt="WMessageBox-polished-1.png">
<p><strong>Example of a WMessageBox (polished)</strong></p></div>
</td></tr>
</table>
<p>
<h3>CSS</h3>
<p>
A <a class="el" href="classWt_1_1WMessageBox.html" title="A standard dialog for confirmation or to get simple user input.">WMessageBox</a> can be styled using the <code>Wt-dialog</code> and <code>Wt-outset</code> style classes from it's superclass <a class="el" href="classWt_1_1WDialog.html" title="A WDialog shows a dialog.">WDialog</a>. The messagebox' buttons can be styled using <code>Wt-msgbox-buttons</code> style class. <hr><h2>Constructor & Destructor Documentation</h2>
<a class="anchor" name="2a6c97b72f842051e129ff3140fba0c2"></a><!-- doxytag: member="Wt::WMessageBox::WMessageBox" ref="2a6c97b72f842051e129ff3140fba0c2" args="(bool i18n=false)" -->
<div class="memitem">
<div class="memproto">
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<td class="memname">Wt::WMessageBox::WMessageBox </td>
<td>(</td>
<td class="paramtype">bool </td>
<td class="paramname"> <em>i18n</em> = <code>false</code> </td>
<td> ) </td>
<td></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>
Creates an empty message box.
<p>
The button labels may be set fixed English (if <code>i18n</code> = <code>false</code>), or fetched from a resource bundle if <code>i18n</code> = <code>true</code>. In that case, the key for each button is exactly the same as the English text.
</div>
</div><p>
<a class="anchor" name="056accb0659a412e0aace3be3d449f7a"></a><!-- doxytag: member="Wt::WMessageBox::WMessageBox" ref="056accb0659a412e0aace3be3d449f7a" args="(const WString &caption, const WString &text, Icon icon, WFlags< StandardButton > buttons, bool i18n=false)" -->
<div class="memitem">
<div class="memproto">
<table class="memname">
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<td class="memname">Wt::WMessageBox::WMessageBox </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="classWt_1_1WString.html">WString</a> & </td>
<td class="paramname"> <em>caption</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">const <a class="el" href="classWt_1_1WString.html">WString</a> & </td>
<td class="paramname"> <em>text</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype"><a class="el" href="namespaceWt.html#aa26ad9f143951595691fbd604567f5f">Icon</a> </td>
<td class="paramname"> <em>icon</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">WFlags< <a class="el" href="namespaceWt.html#270a5e1af09979a6559f0f39e3d93062">StandardButton</a> > </td>
<td class="paramname"> <em>buttons</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">bool </td>
<td class="paramname"> <em>i18n</em> = <code>false</code></td><td> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td><td></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>
Creates a message box with given caption, text, icon, and buttons.
<p>
The button labels may be set fixed English (if <code>i18n</code> = <code>false</code>), or fetched from a resource bundle if <code>i18n</code> = <code>true</code>.<p>
In that case, the key for each button is exactly the same as the English text.
</div>
</div><p>
<hr><h2>Member Function Documentation</h2>
<a class="anchor" name="da70275e7f0d9fc067cd5a1c553a031f"></a><!-- doxytag: member="Wt::WMessageBox::textWidget" ref="da70275e7f0d9fc067cd5a1c553a031f" args="() const " -->
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<td class="memname"><a class="el" href="classWt_1_1WText.html">WText</a>* Wt::WMessageBox::textWidget </td>
<td>(</td>
<td class="paramname"> </td>
<td> ) </td>
<td> const<code> [inline]</code></td>
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</div>
<div class="memdoc">
<p>
Returns the text widget.
<p>
This may be useful to customize the style or layout of the displayed text.
</div>
</div><p>
<a class="anchor" name="9d07bb99d17c38128c79f9c7ecd42963"></a><!-- doxytag: member="Wt::WMessageBox::addButton" ref="9d07bb99d17c38128c79f9c7ecd42963" args="(const WString &text, StandardButton result)" -->
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<td class="memname"><a class="el" href="classWt_1_1WPushButton.html">WPushButton</a> * Wt::WMessageBox::addButton </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="classWt_1_1WString.html">WString</a> & </td>
<td class="paramname"> <em>text</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype"><a class="el" href="namespaceWt.html#270a5e1af09979a6559f0f39e3d93062">StandardButton</a> </td>
<td class="paramname"> <em>result</em></td><td> </td>
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Add a custom button with given text.
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When the button is clicked, the associated result will be returned.
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<a class="anchor" name="0e95f906d321b5c5cb574abc25716aec"></a><!-- doxytag: member="Wt::WMessageBox::button" ref="0e95f906d321b5c5cb574abc25716aec" args="(StandardButton b)" -->
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<td class="memname"><a class="el" href="classWt_1_1WPushButton.html">WPushButton</a> * Wt::WMessageBox::button </td>
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<td class="paramtype"><a class="el" href="namespaceWt.html#270a5e1af09979a6559f0f39e3d93062">StandardButton</a> </td>
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Returns the button widget for the given standard button.
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This may be useful to customize the style or layout of the button.
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<a class="anchor" name="c07ce4dd360c8305cdc1e08642e32a7c"></a><!-- doxytag: member="Wt::WMessageBox::buttonResult" ref="c07ce4dd360c8305cdc1e08642e32a7c" args="()" -->
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<td class="memname"><a class="el" href="namespaceWt.html#270a5e1af09979a6559f0f39e3d93062">StandardButton</a> Wt::WMessageBox::buttonResult </td>
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Returns the result of this message box.
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This value is only defined after a button has been clicked.
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<a class="anchor" name="cacb6ec745e3fab2833f712994bce9db"></a><!-- doxytag: member="Wt::WMessageBox::show" ref="cacb6ec745e3fab2833f712994bce9db" args="(const WString &caption, const WString &text, WFlags< StandardButton > buttons, bool i18n=false)" -->
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<td class="memname"><a class="el" href="namespaceWt.html#270a5e1af09979a6559f0f39e3d93062">StandardButton</a> Wt::WMessageBox::show </td>
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<td class="paramtype">const <a class="el" href="classWt_1_1WString.html">WString</a> & </td>
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Convenience method to show a message box, blocking the current thread.
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Show a message box, blocking the current thread until the message box is closed, and return the result.
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