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qmessagebox.cpp

Last change on this file was 2, checked in by dmik, 20 years ago
Imported xplatform parts of the official release 3.3.1 from Trolltech
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1	/****************************************************************************
2	** $Id: qmessagebox.cpp 2 2005-11-16 15:49:26Z dmik $
3	**
4	** Implementation of QMessageBox class
5	**
6	** Created : 950503
7	**
8	** Copyright (C) 1992-2003 Trolltech AS. All rights reserved.
9	**
10	** This file is part of the dialogs module of the Qt GUI Toolkit.
11	**
12	** This file may be distributed under the terms of the Q Public License
13	** as defined by Trolltech AS of Norway and appearing in the file
14	** LICENSE.QPL included in the packaging of this file.
15	**
16	** This file may be distributed and/or modified under the terms of the
17	** GNU General Public License version 2 as published by the Free Software
18	** Foundation and appearing in the file LICENSE.GPL included in the
19	** packaging of this file.
20	**
21	** Licensees holding valid Qt Enterprise Edition or Qt Professional Edition
22	** licenses may use this file in accordance with the Qt Commercial License
23	** Agreement provided with the Software.
24	**
25	** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
26	** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
27	**
28	** See http://www.trolltech.com/pricing.html or email sales@trolltech.com for
29	** information about Qt Commercial License Agreements.
30	** See http://www.trolltech.com/qpl/ for QPL licensing information.
31	** See http://www.trolltech.com/gpl/ for GPL licensing information.
32	**
33	** Contact info@trolltech.com if any conditions of this licensing are
34	** not clear to you.
35	**
36	**********************************************************************/
37
38	#include "qmessagebox.h"
39
40	#ifndef QT_NO_MESSAGEBOX
41
42	#include "qaccel.h"
43	#include "qlabel.h"
44	#include "qpushbutton.h"
45	#include "qimage.h"
46	#include "qapplication.h"
47	#include "qstyle.h"
48	#include "qobjectlist.h"
49	#if defined(QT_ACCESSIBILITY_SUPPORT)
50	#include "qaccessible.h"
51	#endif
52	#if defined QT_NON_COMMERCIAL
53	#include "qnc_win.h"
54	#endif
55
56
57	// Internal class - don't touch
58
59	class QMessageBoxLabel : public QLabel
60	{
61	Q_OBJECT
62	public:
63	QMessageBoxLabel( QWidget* parent ) : QLabel( parent, "messageBoxText")
64	{
65	setAlignment( AlignAuto\|ExpandTabs );
66	}
67	};
68	#include "qmessagebox.moc"
69
70
71
72	// the Qt logo, for aboutQt
73	/* XPM */
74	static const char * const qtlogo_xpm[] = {
75	/* width height ncolors chars_per_pixel */
76	"50 50 17 1",
77	/* colors */
78	" c #000000",
79	". c #495808",
80	"X c #2A3304",
81	"o c #242B04",
82	"O c #030401",
83	"+ c #9EC011",
84	"@ c #93B310",
85	"# c #748E0C",
86	"$ c #A2C511",
87	"% c #8BA90E",
88	"& c #99BA10",
89	"* c #060701",
90	"= c #181D02",
91	"- c #212804",
92	"; c #61770A",
93	": c #0B0D01",
94	"/ c None",
95	/* pixels */
96	"/$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$/",
97	"$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$",
98	"$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$",
99	"$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$",
100	"$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$",
101	"$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$",
102	"$$$$$$$$$$$$$$$$$$$$$$$+++$$$$$$$$$$$$$$$$$$$$$$$$",
103	"$$$$$$$$$$$$$$$$$$$@;.o=::=o.;@$$$$$$$$$$$$$$$$$$$",
104	"$$$$$$$$$$$$$$$$+#X* **X#+$$$$$$$$$$$$$$$$",
105	"$$$$$$$$$$$$$$$#oO* O **o#+$$$$$$$$$$$$$$",
106	"$$$$$$$$$$$$$&.* OO O*.&$$$$$$$$$$$$$",
107	"$$$$$$$$$$$$@XOO * OO X&$$$$$$$$$$$$",
108	"$$$$$$$$$$$@XO OO O **:::OOO OOO X@$$$$$$$$$$$",
109	"$$$$$$$$$$&XO O-;#@++@%.oOO X&$$$$$$$$$$",
110	"$$$$$$$$$$.O : -#+$$$$$$$$+#- : O O.$$$$$$$$$$",
111	"$$$$$$$$$#OO O.&$$$$$$$$$$$$+.OOOO **#$$$$$$$$$",
112	"$$$$$$$$+-OO O ;$$$$$$$$$$$&$$$$; o+$$$$$$$$",
113	"$$$$$$$$#O* O .+$$$$$$$$$$@X;$$$+.O *#$$$$$$$$",
114	"$$$$$$$$X* -&$$$$$$$$$$@- :;$$$&- OX$$$$$$$$",
115	"$$$$$$$@O O#$$$$$$$$$$@oOO*;$$$# O%$$$$$$$",
116	"$$$$$$$; -+$$$$$$$$$@o O OO ;+$$-O *;$$$$$$$",
117	"$$$$$$$. ;$$$$$$$$$@-OO OO X&$$;O .$$$$$$$",
118	"$$$$$$$o #$$$$$$$$@o O O O-@$$$#O o$$$$$$$",
119	"$$$$$$+= @$$$$$$$@o OO -@$$$$&: =$$$$$$$",
120	"$$$$$$+: :+$$$$$$@- *-@$$$$$$: :+$$$$$$",
121	"$$$$$$+: :+$$$$$@o* O *-@$$$$$$: :+$$$$$$",
122	"$$$$$$$= :@$$$$@o*OOO -@$$$$@: =+$$$$$$",
123	"$$$$$$$- O%$$$@o* O O O O-@$$$#* OX$$$$$$$",
124	"$$$$$$$. O O;$$&o OO* *O -@$$; O.$$$$$$$",
125	"$$$$$$$;* Oo+$$;OO:OO-- Oo@+= ;$$$$$$$",
126	"$$$$$$$@* O O#$$$;OOOo@@-O Oo;O **@$$$$$$$",
127	"$$$$$$$$X* OOO-+$$$;O o@$$@- O O OX$$$$$$$$",
128	"$$$$$$$$#* * O.$$$$;X@$$$$@-O O O#$$$$$$$$",
129	"$$$$$$$$+oO O OO.+$$+&$$$$$$@-O o+$$$$$$$$",
130	"$$$$$$$$$#* **.&$$$$$$$$$$@o OO:#$$$$$$$$$",
131	"$$$$$$$$$+. O* O-#+$$$$$$$$+;O OOO:@$$$$$$$$$",
132	"$$$$$$$$$$&X *O -;#@++@#;=O O -@$$$$$$$$",
133	"$$$$$$$$$$$&X O O*O::::O OO Oo@$$$$$$$",
134	"$$$$$$$$$$$$@XOO OO O*X+$$$$$$",
135	"$$$$$$$$$$$$$&.* ** O :: *:#$$$$$$$",
136	"$$$$$$$$$$$$$$$#o*OO O Oo#@-OOO=#$$$$$$$$",
137	"$$$$$$$$$$$$$$$$+#X:* * O*X#+$$@-:#$$$$$$$$$",
138	"$$$$$$$$$$$$$$$$$$$%;.o=::=o.#@$$$$$$@X#$$$$$$$$$$",
139	"$$$$$$$$$$$$$$$$$$$$$$$$+++$$$$$$$$$$$+$$$$$$$$$$$",
140	"$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$",
141	"$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$",
142	"$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$",
143	"$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$",
144	"$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$",
145	"/$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$/",
146	};
147
148
149	/*!
150	\class QMessageBox
151	\brief The QMessageBox class provides a modal dialog with a short message, an icon, and some buttons.
152	\ingroup dialogs
153	\mainclass
154
155	Message boxes are used to provide informative messages and to ask
156	simple questions.
157
158	QMessageBox provides a range of different messages, arranged
159	roughly along two axes: severity and complexity.
160
161	Severity is
162	\table
163	\row
164	\i \img qmessagebox-quest.png
165	\i Question
166	\i For message boxes that ask a question as part of normal
167	operation. Some style guides recommend using Information for this
168	purpose.
169	\row
170	\i \img qmessagebox-info.png
171	\i Information
172	\i For message boxes that are part of normal operation.
173	\row
174	\i \img qmessagebox-warn.png
175	\i Warning
176	\i For message boxes that tell the user about unusual errors.
177	\row
178	\i \img qmessagebox-crit.png
179	\i Critical
180	\i For message boxes that tell the user about critical errors.
181	\endtable
182
183	The message box has a different icon for each of the severity levels.
184
185	Complexity is one button (OK) for simple messages, or two or even
186	three buttons for questions.
187
188	There are static functions for the most common cases.
189
190	Examples:
191
192	If a program is unable to find a supporting file, but can do perfectly
193	well without it:
194
195	\code
196	QMessageBox::information( this, "Application name",
197	"Unable to find the user preferences file.\n"
198	"The factory default will be used instead." );
199	\endcode
200
201	question() is useful for simple yes/no questions:
202
203	\code
204	if ( QFile::exists( filename ) &&
205	QMessageBox::question(
206	this,
207	tr("Overwrite File? -- Application Name"),
208	tr("A file called %1 already exists."
209	"Do you want to overwrite it?")
210	.arg( filename ),
211	tr("&Yes"), tr("&No"),
212	QString::null, 0, 1 ) )
213	return false;
214	\endcode
215
216	warning() can be used to tell the user about unusual errors, or
217	errors which can't be easily fixed:
218
219	\code
220	switch( QMessageBox::warning( this, "Application name",
221	"Could not connect to the <mumble> server.\n"
222	"This program can't function correctly "
223	"without the server.\n\n",
224	"Retry",
225	"Quit", 0, 0, 1 ) ) {
226	case 0: // The user clicked the Retry again button or pressed Enter
227	// try again
228	break;
229	case 1: // The user clicked the Quit or pressed Escape
230	// exit
231	break;
232	}
233	\endcode
234
235	The text part of all message box messages can be either rich text
236	or plain text. If you specify a rich text formatted string, it
237	will be rendered using the default stylesheet. See
238	QStyleSheet::defaultSheet() for details. With certain strings that
239	contain XML meta characters, the auto-rich text detection may
240	fail, interpreting plain text incorrectly as rich text. In these
241	rare cases, use QStyleSheet::convertFromPlainText() to convert
242	your plain text string to a visually equivalent rich text string
243	or set the text format explicitly with setTextFormat().
244
245	Note that the Microsoft Windows User Interface Guidelines
246	recommend using the application name as the window's caption.
247
248	Below are more examples of how to use the static member functions.
249	After these examples you will find an overview of the non-static
250	member functions.
251
252	Exiting a program is part of its normal operation. If there is
253	unsaved data the user probably should be asked if they want to
254	save the data. For example:
255
256	\code
257	switch( QMessageBox::information( this, "Application name here",
258	"The document contains unsaved changes\n"
259	"Do you want to save the changes before exiting?",
260	"&Save", "&Discard", "Cancel",
261	0, // Enter == button 0
262	2 ) ) { // Escape == button 2
263	case 0: // Save clicked or Alt+S pressed or Enter pressed.
264	// save
265	break;
266	case 1: // Discard clicked or Alt+D pressed
267	// don't save but exit
268	break;
269	case 2: // Cancel clicked or Escape pressed
270	// don't exit
271	break;
272	}
273	\endcode
274
275	The Escape button cancels the entire exit operation, and pressing
276	Enter causes the changes to be saved before the exit occurs.
277
278	Disk full errors are unusual and they certainly can be hard to
279	correct. This example uses predefined buttons instead of
280	hard-coded button texts:
281
282	\code
283	switch( QMessageBox::warning( this, "Application name here",
284	"Could not save the user preferences,\n"
285	"because the disk is full. You can delete\n"
286	"some files and press Retry, or you can\n"
287	"abort the Save Preferences operation.",
288	QMessageBox::Retry \| QMessageBox::Default,
289	QMessageBox::Abort \| QMessageBox::Escape )) {
290	case QMessageBox::Retry: // Retry clicked or Enter pressed
291	// try again
292	break;
293	case QMessageBox::Abort: // Abort clicked or Escape pressed
294	// abort
295	break;
296	}
297	\endcode
298
299	The critical() function should be reserved for critical errors. In
300	this example errorDetails is a QString or const char*, and QString
301	is used to concatenate several strings:
302
303	\code
304	QMessageBox::critical( 0, "Application name here",
305	QString("An internal error occurred. Please ") +
306	"call technical support at 1234-56789 and report\n"+
307	"these numbers:\n\n" + errorDetails +
308	"\n\nApplication will now exit." );
309	\endcode
310
311	In this example an OK button is displayed.
312
313	QMessageBox provides a very simple About box which displays an
314	appropriate icon and the string you provide:
315
316	\code
317	QMessageBox::about( this, "About <Application>",
318	"<Application> is a <one-paragraph blurb>\n\n"
319	"Copyright 1991-2003 Such-and-such. "
320	"<License words here.>\n\n"
321	"For technical support, call 1234-56789 or see\n"
322	"http://www.such-and-such.com/Application/\n" );
323	\endcode
324
325	See about() for more information.
326
327	If you want your users to know that the application is built using
328	Qt (so they know that you use high quality tools) you might like
329	to add an "About Qt" menu option under the Help menu to invoke
330	aboutQt().
331
332	If none of the standard message boxes is suitable, you can create a
333	QMessageBox from scratch and use custom button texts:
334
335	\code
336	QMessageBox mb( "Application name here",
337	"Saving the file will overwrite the original file on the disk.\n"
338	"Do you really want to save?",
339	QMessageBox::Information,
340	QMessageBox::Yes \| QMessageBox::Default,
341	QMessageBox::No,
342	QMessageBox::Cancel \| QMessageBox::Escape );
343	mb.setButtonText( QMessageBox::Yes, "Save" );
344	mb.setButtonText( QMessageBox::No, "Discard" );
345	switch( mb.exec() ) {
346	case QMessageBox::Yes:
347	// save and exit
348	break;
349	case QMessageBox::No:
350	// exit without saving
351	break;
352	case QMessageBox::Cancel:
353	// don't save and don't exit
354	break;
355	}
356	\endcode
357
358	QMessageBox defines two enum types: Icon and an unnamed button type.
359	Icon defines the \c Question, \c Information, \c Warning, and \c
360	Critical icons for each GUI style. It is used by the constructor
361	and by the static member functions question(), information(),
362	warning() and critical(). A function called standardIcon() gives
363	you access to the various icons.
364
365	The button types are:
366	\list
367	\i Ok - the default for single-button message boxes
368	\i Cancel - note that this is \e not automatically Escape
369	\i Yes
370	\i No
371	\i Abort
372	\i Retry
373	\i Ignore
374	\i YesAll
375	\i NoAll
376	\endlist
377
378	Button types can be combined with two modifiers by using OR, '\|':
379	\list
380	\i Default - makes pressing Enter equivalent to
381	clicking this button. Normally used with Ok, Yes or similar.
382	\i Escape - makes pressing Escape equivalent to clicking this button.
383	Normally used with Abort, Cancel or similar.
384	\endlist
385
386	The text(), icon() and iconPixmap() functions provide access to the
387	current text and pixmap of the message box. The setText(), setIcon()
388	and setIconPixmap() let you change it. The difference between
389	setIcon() and setIconPixmap() is that the former accepts a
390	QMessageBox::Icon and can be used to set standard icons, whereas the
391	latter accepts a QPixmap and can be used to set custom icons.
392
393	setButtonText() and buttonText() provide access to the buttons.
394
395	QMessageBox has no signals or slots.
396
397	<img src=qmsgbox-m.png> <img src=qmsgbox-w.png>
398
399	\sa QDialog,
400	\link http://www.iarchitect.com/errormsg.htm
401	Isys on error messages \endlink,
402	\link guibooks.html#fowler GUI Design Handbook: Message Box \endlink
403	*/
404
405
406	/*!
407	\enum QMessageBox::Icon
408
409	This enum has the following values:
410
411	\value NoIcon the message box does not have any icon.
412
413	\value Question an icon indicating that
414	the message is asking a question.
415
416	\value Information an icon indicating that
417	the message is nothing out of the ordinary.
418
419	\value Warning an icon indicating that the
420	message is a warning, but can be dealt with.
421
422	\value Critical an icon indicating that
423	the message represents a critical problem.
424
425	*/
426
427
428	struct QMessageBoxData {
429	QMessageBoxData(QMessageBox* parent) :
430	iconLabel( parent, "icon" )
431	{
432	}
433
434	int numButtons; // number of buttons
435	QMessageBox::Icon icon; // message box icon
436	QLabel iconLabel; // label holding any icon
437	int button[3]; // button types
438	int defButton; // default button (index)
439	int escButton; // escape button (index)
440	QSize buttonSize; // button size
441	QPushButton *pb[3]; // buttons
442	};
443
444	static const int LastButton = QMessageBox::NoAll;
445
446	/*
447	NOTE: The table of button texts correspond to the button enum.
448	*/
449
450	#ifndef Q_OS_TEMP
451	static const char * const mb_texts[] = {
452	#else
453	const char * mb_texts[] = {
454	#endif
455	0,
456	QT_TRANSLATE_NOOP("QMessageBox","OK"),
457	QT_TRANSLATE_NOOP("QMessageBox","Cancel"),
458	QT_TRANSLATE_NOOP("QMessageBox","&Yes"),
459	QT_TRANSLATE_NOOP("QMessageBox","&No"),
460	QT_TRANSLATE_NOOP("QMessageBox","&Abort"),
461	QT_TRANSLATE_NOOP("QMessageBox","&Retry"),
462	QT_TRANSLATE_NOOP("QMessageBox","&Ignore"),
463	QT_TRANSLATE_NOOP("QMessageBox","Yes to &All"),
464	QT_TRANSLATE_NOOP("QMessageBox","N&o to All"),
465	0
466	};
467
468	/*!
469	Constructs a message box with no text and a button with the label
470	"OK".
471
472	If \a parent is 0, the message box becomes an application-global
473	modal dialog box. If \a parent is a widget, the message box
474	becomes modal relative to \a parent.
475
476	The \a parent and \a name arguments are passed to the QDialog
477	constructor.
478	*/
479
480	QMessageBox::QMessageBox( QWidget parent, const char name )
481	: QDialog( parent, name, TRUE, WStyle_Customize \| WStyle_DialogBorder \| WStyle_Title \| WStyle_SysMenu )
482	{
483	init( Ok, 0, 0 );
484	}
485
486
487	/*!
488	Constructs a message box with a \a caption, a \a text, an \a icon,
489	and up to three buttons.
490
491	The \a icon must be one of the following:
492	\list
493	\i QMessageBox::NoIcon
494	\i QMessageBox::Question
495	\i QMessageBox::Information
496	\i QMessageBox::Warning
497	\i QMessageBox::Critical
498	\endlist
499
500	Each button, \a button0, \a button1 and \a button2, can have one
501	of the following values:
502	\list
503	\i QMessageBox::NoButton
504	\i QMessageBox::Ok
505	\i QMessageBox::Cancel
506	\i QMessageBox::Yes
507	\i QMessageBox::No
508	\i QMessageBox::Abort
509	\i QMessageBox::Retry
510	\i QMessageBox::Ignore
511	\i QMessageBox::YesAll
512	\i QMessageBox::NoAll
513	\endlist
514
515	Use QMessageBox::NoButton for the later parameters to have fewer
516	than three buttons in your message box. If you don't specify any
517	buttons at all, QMessageBox will provide an Ok button.
518
519	One of the buttons can be OR-ed with the \c QMessageBox::Default
520	flag to make it the default button (clicked when Enter is
521	pressed).
522
523	One of the buttons can be OR-ed with the \c QMessageBox::Escape
524	flag to make it the cancel or close button (clicked when Escape is
525	pressed).
526
527	Example:
528	\code
529	QMessageBox mb( "Application Name",
530	"Hardware failure.\n\nDisk error detected\nDo you want to stop?",
531	QMessageBox::Question,
532	QMessageBox::Yes \| QMessageBox::Default,
533	QMessageBox::No \| QMessageBox::Escape
534	QMessageBox::NoButton );
535	if ( mb.exec() == QMessageBox::No )
536	// try again
537	\endcode
538
539	If \a parent is 0, the message box becomes an application-global
540	modal dialog box. If \a parent is a widget, the message box
541	becomes modal relative to \a parent.
542
543	If \a modal is TRUE the message box is modal; otherwise it
544	is modeless.
545
546	The \a parent, \a name, \a modal, and \a f arguments are passed to
547	the QDialog constructor.
548
549	\sa setCaption(), setText(), setIcon()
550	*/
551
552	QMessageBox::QMessageBox( const QString& caption,
553	const QString &text, Icon icon,
554	int button0, int button1, int button2,
555	QWidget parent, const char name,
556	bool modal, WFlags f )
557	: QDialog( parent, name, modal, f \| WStyle_Customize \| WStyle_DialogBorder \| WStyle_Title \| WStyle_SysMenu )
558	{
559	init( button0, button1, button2 );
560	#ifndef QT_NO_WIDGET_TOPEXTRA
561	setCaption( caption );
562	#endif
563	setText( text );
564	setIcon( icon );
565	}
566
567
568	/*!
569	Destroys the message box.
570	*/
571
572	QMessageBox::~QMessageBox()
573	{
574	delete mbd;
575	}
576
577	static QString * translatedTextAboutQt = 0;
578
579	void QMessageBox::init( int button0, int button1, int button2 )
580	{
581	if ( !translatedTextAboutQt ) {
582	translatedTextAboutQt = new QString;
583
584	#if defined(QT_NON_COMMERCIAL)
585	QT_NC_MSGBOX
586	#else
587	*translatedTextAboutQt = tr(
588	"<h3>About Qt</h3>"
589	"<p>This program uses Qt version %1.</p>"
590	"<p>Qt is a C++ toolkit for multiplatform GUI & "
591	"application development.</p>"
592	"<p>Qt provides single-source "
593	"portability across MS Windows, Mac OS X, "
594	"Linux, and all major commercial Unix variants."
595	"<br>Qt is also available for embedded devices.</p>"
596	"<p>Qt is a Trolltech product. "
597	"See <tt>http://www.trolltech.com/qt/</tt> "
598	"for more information.</p>"
599	).arg( QT_VERSION_STR );
600	#endif
601
602	}
603	label = new QMessageBoxLabel( this );
604	Q_CHECK_PTR( label );
605
606	if ( (button2 && !button1) \|\| (button1 && !button0) ) {
607	#if defined(QT_CHECK_RANGE)
608	qWarning( "QMessageBox: Inconsistent button parameters" );
609	#endif
610	button0 = button1 = button2 = 0;
611	}
612	mbd = new QMessageBoxData(this);
613	Q_CHECK_PTR( mbd );
614	mbd->icon = NoIcon;
615	mbd->iconLabel.setPixmap( QPixmap() );
616	mbd->numButtons = 0;
617	mbd->button[0] = button0;
618	mbd->button[1] = button1;
619	mbd->button[2] = button2;
620	mbd->defButton = -1;
621	mbd->escButton = -1;
622	int i;
623	for ( i=0; i<3; i++ ) {
624	int b = mbd->button[i];
625	if ( (b & Default) ) {
626	if ( mbd->defButton >= 0 ) {
627	#if defined(QT_CHECK_RANGE)
628	qWarning( "QMessageBox: There can be at most one "
629	"default button" );
630	#endif
631	} else {
632	mbd->defButton = i;
633	}
634	}
635	if ( (b & Escape) ) {
636	if ( mbd->escButton >= 0 ) {
637	#if defined(QT_CHECK_RANGE)
638	qWarning( "QMessageBox: There can be at most one "
639	"escape button" );
640	#endif
641	} else {
642	mbd->escButton = i;
643	}
644	}
645	b &= ButtonMask;
646	if ( b == 0 ) {
647	if ( i == 0 ) // no buttons, add an Ok button
648	b = Ok;
649	} else if ( b < 0 \|\| b > LastButton ) {
650	#if defined(QT_CHECK_RANGE)
651	qWarning( "QMessageBox: Invalid button specifier" );
652	#endif
653	b = Ok;
654	} else {
655	if ( i > 0 && mbd->button[i-1] == 0 ) {
656	#if defined(QT_CHECK_RANGE)
657	qWarning( "QMessageBox: Inconsistent button parameters; "
658	"button %d defined but not button %d",
659	i+1, i );
660	#endif
661	b = 0;
662	}
663	}
664	mbd->button[i] = b;
665	if ( b )
666	mbd->numButtons++;
667	}
668	for ( i=0; i<3; i++ ) {
669	if ( i >= mbd->numButtons ) {
670	mbd->pb[i] = 0;
671	} else {
672	QCString buttonName;
673	buttonName.sprintf( "button%d", i+1 );
674	mbd->pb[i] = new QPushButton(
675	tr(mb_texts[mbd->button[i]]),
676	this, buttonName );
677	if ( mbd->defButton == i ) {
678	mbd->pb[i]->setDefault( TRUE );
679	mbd->pb[i]->setFocus();
680	}
681	mbd->pb[i]->setAutoDefault( TRUE );
682	mbd->pb[i]->setFocusPolicy( QWidget::StrongFocus );
683	connect( mbd->pb[i], SIGNAL(clicked()), SLOT(buttonClicked()) );
684	}
685	}
686	resizeButtons();
687	reserved1 = reserved2 = 0;
688	}
689
690
691	int QMessageBox::indexOf( int button ) const
692	{
693	int index = -1;
694	for ( int i=0; i<mbd->numButtons; i++ ) {
695	if ( mbd->button[i] == button ) {
696	index = i;
697	break;
698	}
699	}
700	return index;
701	}
702
703
704	void QMessageBox::resizeButtons()
705	{
706	int i;
707	QSize maxSize;
708	for ( i=0; i<mbd->numButtons; i++ ) {
709	QSize s = mbd->pb[i]->sizeHint();
710	maxSize.setWidth( QMAX(maxSize.width(), s.width()) );
711	maxSize.setHeight( QMAX(maxSize.height(),s.height()) );
712	}
713	mbd->buttonSize = maxSize;
714	for ( i=0; i<mbd->numButtons; i++ )
715	mbd->pb[i]->resize( maxSize );
716	}
717
718
719	/*!
720	\property QMessageBox::text
721	\brief the message box text to be displayed.
722
723	The text will be interpreted either as a plain text or as rich
724	text, depending on the text format setting (\l
725	QMessageBox::textFormat). The default setting is \c AutoText, i.e.
726	the message box will try to auto-detect the format of the text.
727
728	The default value of this property is QString::null.
729
730	\sa textFormat
731	*/
732	QString QMessageBox::text() const
733	{
734	return label->text();
735	}
736
737
738	void QMessageBox::setText( const QString &text )
739	{
740	label->setText( text );
741	}
742
743
744	/*!
745	\property QMessageBox::icon
746	\brief the message box's icon
747
748	The icon of the message box can be one of the following predefined
749	icons:
750	\list
751	\i QMessageBox::NoIcon
752	\i QMessageBox::Question
753	\i QMessageBox::Information
754	\i QMessageBox::Warning
755	\i QMessageBox::Critical
756	\endlist
757
758	The actual pixmap used for displaying the icon depends on the
759	current \link QWidget::style() GUI style\endlink. You can also set
760	a custom pixmap icon using the \l QMessageBox::iconPixmap
761	property. The default icon is QMessageBox::NoIcon.
762
763	\sa iconPixmap
764	*/
765
766	QMessageBox::Icon QMessageBox::icon() const
767	{
768	return mbd->icon;
769	}
770
771	void QMessageBox::setIcon( Icon icon )
772	{
773	setIconPixmap( standardIcon(icon) );
774	mbd->icon = icon;
775	}
776
777	/*!
778	\obsolete
779
780	Returns the pixmap used for a standard icon. This
781	allows the pixmaps to be used in more complex message boxes.
782	\a icon specifies the required icon, e.g. QMessageBox::Information,
783	QMessageBox::Warning or QMessageBox::Critical.
784
785	\a style is unused.
786	*/
787
788	QPixmap QMessageBox::standardIcon( Icon icon, GUIStyle style)
789	{
790	Q_UNUSED(style);
791	return QMessageBox::standardIcon(icon);
792	}
793
794
795	/*!
796	Returns the pixmap used for a standard icon. This allows the
797	pixmaps to be used in more complex message boxes. \a icon
798	specifies the required icon, e.g. QMessageBox::Question,
799	QMessageBox::Information, QMessageBox::Warning or
800	QMessageBox::Critical.
801	*/
802
803	QPixmap QMessageBox::standardIcon( Icon icon )
804	{
805	QPixmap pm;
806	switch ( icon ) {
807	case Information:
808	pm = QApplication::style().stylePixmap( QStyle::SP_MessageBoxInformation );
809	break;
810	case Warning:
811	pm = QApplication::style().stylePixmap( QStyle::SP_MessageBoxWarning );
812	break;
813	case Critical:
814	pm = QApplication::style().stylePixmap( QStyle::SP_MessageBoxCritical );
815	break;
816	case Question:
817	pm = QApplication::style().stylePixmap( QStyle::SP_MessageBoxQuestion );
818	default:
819	break;
820	}
821	return pm;
822	}
823
824
825	/*!
826	\property QMessageBox::iconPixmap
827	\brief the current icon
828
829	The icon currently used by the message box. Note that it's often
830	hard to draw one pixmap that looks appropriate in both Motif and
831	Windows GUI styles; you may want to draw two pixmaps.
832
833	\sa icon
834	*/
835
836	const QPixmap *QMessageBox::iconPixmap() const
837	{
838	return mbd->iconLabel.pixmap();
839	}
840
841
842	void QMessageBox::setIconPixmap( const QPixmap &pixmap )
843	{
844	mbd->iconLabel.setPixmap(pixmap);
845	mbd->icon = NoIcon;
846	}
847
848
849	/*!
850	Returns the text of the message box button \a button, or
851	QString::null if the message box does not contain the button.
852
853	\sa setButtonText()
854	*/
855
856	QString QMessageBox::buttonText( int button ) const
857	{
858	int index = indexOf(button);
859	return index >= 0 && mbd->pb[index]
860	? mbd->pb[index]->text()
861	: QString::null;
862	}
863
864
865	/*!
866	Sets the text of the message box button \a button to \a text.
867	Setting the text of a button that is not in the message box is
868	silently ignored.
869
870	\sa buttonText()
871	*/
872
873	void QMessageBox::setButtonText( int button, const QString &text )
874	{
875	int index = indexOf(button);
876	if ( index >= 0 && mbd->pb[index] ) {
877	mbd->pb[index]->setText( text );
878	resizeButtons();
879	}
880	}
881
882
883	/*!
884	\internal
885	Internal slot to handle button clicks.
886	*/
887
888	void QMessageBox::buttonClicked()
889	{
890	int reply = 0;
891	const QObject *s = sender();
892	for ( int i=0; i<mbd->numButtons; i++ ) {
893	if ( mbd->pb[i] == s )
894	reply = mbd->button[i];
895	}
896	done( reply );
897	}
898
899
900	/*!
901	Adjusts the size of the message box to fit the contents just before
902	QDialog::exec() or QDialog::show() is called.
903
904	This function will not be called if the message box has been explicitly
905	resized before showing it.
906	*/
907	void QMessageBox::adjustSize()
908	{
909	if ( !testWState(WState_Polished) )
910	polish();
911	resizeButtons();
912	label->adjustSize();
913	QSize labelSize( label->size() );
914	int n = mbd->numButtons;
915	int bw = mbd->buttonSize.width();
916	int bh = mbd->buttonSize.height();
917	int border = bh / 2 - style().pixelMetric(QStyle::PM_ButtonDefaultIndicator);
918	if ( border <= 0 )
919	border = 10;
920	int btn_spacing = 7;
921	if ( style().styleHint(QStyle::SH_GUIStyle) == MotifStyle )
922	btn_spacing = border;
923	#ifndef Q_OS_TEMP
924	int buttons = mbd->numButtons * bw + (n-1) * btn_spacing;
925	int h = bh;
926	#else
927	int visibleButtons = 0;
928	for ( int i = 0; i < mbd->numButtons; ++i )
929	visibleButtons += mbd->pb[i]->isVisible() ? 1 : 0;
930	int buttons = visibleButtons == 0 ? 0 : visibleButtons * bw + (visibleButtons-1) * btn_spacing;
931	int h = visibleButtons == 0 ? 0 : bh;
932	n = visibleButtons;
933	#endif
934	if ( labelSize.height() )
935	h += labelSize.height() + 3*border;
936	else
937	h += 2*border;
938	int lmargin = 0;
939	if ( mbd->iconLabel.pixmap() && mbd->iconLabel.pixmap()->width() ) {
940	mbd->iconLabel.adjustSize();
941	lmargin += mbd->iconLabel.width() + border;
942	if ( h < mbd->iconLabel.height() + 3*border + bh && n )
943	h = mbd->iconLabel.height() + 3*border + bh;
944	}
945	int w = QMAX( buttons, labelSize.width() + lmargin ) + 2*border;
946	QRect screen = QApplication::desktop()->screenGeometry( pos() );
947	if ( w > screen.width() )
948	w = screen.width();
949	resize( w, h );
950	setMinimumSize( size() );
951	}
952
953
954	/*!\reimp
955	*/
956	void QMessageBox::resizeEvent( QResizeEvent * )
957	{
958	int i;
959	int n = mbd->numButtons;
960	int bw = mbd->buttonSize.width();
961	int bh = mbd->buttonSize.height();
962	#ifdef Q_OS_TEMP
963	int visibleButtons = 0;
964	for ( i = 0; i < n; ++i )
965	visibleButtons += mbd->pb[i]->isVisible() ? 1 : 0;
966	n = visibleButtons;
967	bw = visibleButtons == 0 ? 0 : bw;
968	bh = visibleButtons == 0 ? 0 : bh;
969	#endif
970	int border = bh / 2 - style().pixelMetric(QStyle::PM_ButtonDefaultIndicator);
971	if ( border <= 0 )
972	border = 10;
973	int btn_spacing = 7;
974	if ( style().styleHint(QStyle::SH_GUIStyle) == MotifStyle )
975	btn_spacing = border;
976	int lmargin = 0;
977	mbd->iconLabel.adjustSize();
978	mbd->iconLabel.move( border, border );
979	if ( mbd->iconLabel.pixmap() && mbd->iconLabel.pixmap()->width() )
980	lmargin += mbd->iconLabel.width() + border;
981	label->setGeometry( lmargin+border,
982	border,
983	width() - lmargin -2*border,
984	height() - 3*border - bh );
985	int extra_space = (width() - bwn - 2border - (n-1)*btn_spacing);
986	if ( style().styleHint(QStyle::SH_GUIStyle) == MotifStyle )
987	for ( i=0; i<n; i++ )
988	mbd->pb[i]->move( border + ibw + ibtn_spacing + extra_space*(i+1)/(n+1),
989	height() - border - bh );
990	else
991	for ( i=0; i<n; i++ )
992	mbd->pb[i]->move( border + ibw + extra_space/2 + ibtn_spacing,
993	height() - border - bh );
994	}
995
996
997	/*!\reimp
998	*/
999	void QMessageBox::keyPressEvent( QKeyEvent *e )
1000	{
1001	if ( e->key() == Key_Escape ) {
1002	if ( mbd->escButton >= 0 ) {
1003	QPushButton *pb = mbd->pb[mbd->escButton];
1004	pb->animateClick();
1005	e->accept();
1006	return;
1007	}
1008	}
1009	#ifndef QT_NO_ACCEL
1010	if ( !( e->state() & AltButton ) ) {
1011	QObjectList *list = queryList( "QPushButton" );
1012	QObjectListIt it( *list );
1013	QPushButton *pb;
1014	while ( (pb = (QPushButton*)it.current()) ) {
1015	int key = e->key() & ~(MODIFIER_MASK\|UNICODE_ACCEL);
1016	int acc = pb->accel() & ~(MODIFIER_MASK\|UNICODE_ACCEL);
1017	if ( key && acc && acc == key ) {
1018	delete list;
1019	emit pb->animateClick();
1020	return;
1021	}
1022	++it;
1023	}
1024	delete list;
1025	}
1026	#endif
1027	QDialog::keyPressEvent( e );
1028	}
1029
1030	/*!\reimp
1031	*/
1032	void QMessageBox::showEvent( QShowEvent *e )
1033	{
1034	#if defined(QT_ACCESSIBILITY_SUPPORT)
1035	QAccessible::updateAccessibility( this, 0, QAccessible::Alert );
1036	#endif
1037	QDialog::showEvent( e );
1038	}
1039
1040	/*!\reimp
1041	*/
1042	void QMessageBox::closeEvent( QCloseEvent *e )
1043	{
1044	QDialog::closeEvent( e );
1045	if ( mbd->escButton != -1 )
1046	setResult( mbd->button[mbd->escButton] );
1047	}
1048
1049	/*****************************************************************************
1050	Static QMessageBox functions
1051	*****************************************************************************/
1052
1053	/!\fn int QMessageBox::message( const QString &,const QString&,const QString&,QWidget,const char * )
1054	\obsolete
1055	Opens a modal message box directly using the specified parameters.
1056
1057	Please use information(), warning(), question(), or critical() instead.
1058	*/
1059
1060	/! \fn bool QMessageBox::query( const QString &,const QString&,const QString&,const QString&,QWidget , const char * )
1061	\obsolete
1062	Queries the user using a modal message box with two buttons.
1063	Note that \a caption is not always shown, it depends on the window manager.
1064
1065	Please use information(), question(), warning(), or critical() instead.
1066	*/
1067
1068	/*!
1069	Opens an information message box with the caption \a caption and
1070	the text \a text. The dialog may have up to three buttons. Each of
1071	the buttons, \a button0, \a button1 and \a button2 may be set to
1072	one of the following values:
1073
1074	\list
1075	\i QMessageBox::NoButton
1076	\i QMessageBox::Ok
1077	\i QMessageBox::Cancel
1078	\i QMessageBox::Yes
1079	\i QMessageBox::No
1080	\i QMessageBox::Abort
1081	\i QMessageBox::Retry
1082	\i QMessageBox::Ignore
1083	\i QMessageBox::YesAll
1084	\i QMessageBox::NoAll
1085	\endlist
1086
1087	If you don't want all three buttons, set the last button, or last
1088	two buttons to QMessageBox::NoButton.
1089
1090	One button can be OR-ed with \c QMessageBox::Default, and one
1091	button can be OR-ed with \c QMessageBox::Escape.
1092
1093	Returns the identity (QMessageBox::Ok, or QMessageBox::No, etc.)
1094	of the button that was clicked.
1095
1096	If \a parent is 0, the message box becomes an application-global
1097	modal dialog box. If \a parent is a widget, the message box
1098	becomes modal relative to \a parent.
1099
1100	\sa question(), warning(), critical()
1101	*/
1102
1103	int QMessageBox::information( QWidget *parent,
1104	const QString& caption, const QString& text,
1105	int button0, int button1, int button2 )
1106	{
1107	QMessageBox *mb = new QMessageBox( caption, text, Information,
1108	button0, button1, button2,
1109	parent, "qt_msgbox_information", TRUE,
1110	WDestructiveClose);
1111	Q_CHECK_PTR( mb );
1112	return mb->exec();
1113	}
1114
1115	/*!
1116	Opens a question message box with the caption \a caption and the
1117	text \a text. The dialog may have up to three buttons. Each of the
1118	buttons, \a button0, \a button1 and \a button2 may be set to one
1119	of the following values:
1120
1121	\list
1122	\i QMessageBox::NoButton
1123	\i QMessageBox::Ok
1124	\i QMessageBox::Cancel
1125	\i QMessageBox::Yes
1126	\i QMessageBox::No
1127	\i QMessageBox::Abort
1128	\i QMessageBox::Retry
1129	\i QMessageBox::Ignore
1130	\i QMessageBox::YesAll
1131	\i QMessageBox::NoAll
1132	\endlist
1133
1134	If you don't want all three buttons, set the last button, or last
1135	two buttons to QMessageBox::NoButton.
1136
1137	One button can be OR-ed with \c QMessageBox::Default, and one
1138	button can be OR-ed with \c QMessageBox::Escape.
1139
1140	Returns the identity (QMessageBox::Yes, or QMessageBox::No, etc.)
1141	of the button that was clicked.
1142
1143	If \a parent is 0, the message box becomes an application-global
1144	modal dialog box. If \a parent is a widget, the message box
1145	becomes modal relative to \a parent.
1146
1147	\sa information(), warning(), critical()
1148	*/
1149
1150	int QMessageBox::question( QWidget *parent,
1151	const QString& caption, const QString& text,
1152	int button0, int button1, int button2 )
1153	{
1154	QMessageBox *mb = new QMessageBox( caption, text, Question,
1155	button0, button1, button2,
1156	parent, "qt_msgbox_information", TRUE,
1157	WDestructiveClose);
1158	Q_CHECK_PTR( mb );
1159	return mb->exec();
1160	}
1161
1162
1163	/*!
1164	Opens a warning message box with the caption \a caption and the
1165	text \a text. The dialog may have up to three buttons. Each of the
1166	button parameters, \a button0, \a button1 and \a button2 may be
1167	set to one of the following values:
1168
1169	\list
1170	\i QMessageBox::NoButton
1171	\i QMessageBox::Ok
1172	\i QMessageBox::Cancel
1173	\i QMessageBox::Yes
1174	\i QMessageBox::No
1175	\i QMessageBox::Abort
1176	\i QMessageBox::Retry
1177	\i QMessageBox::Ignore
1178	\i QMessageBox::YesAll
1179	\i QMessageBox::NoAll
1180	\endlist
1181
1182	If you don't want all three buttons, set the last button, or last
1183	two buttons to QMessageBox::NoButton.
1184
1185	One button can be OR-ed with \c QMessageBox::Default, and one
1186	button can be OR-ed with \c QMessageBox::Escape.
1187
1188	Returns the identity (QMessageBox::Ok, or QMessageBox::No, etc.)
1189	of the button that was clicked.
1190
1191	If \a parent is 0, the message box becomes an application-global
1192	modal dialog box. If \a parent is a widget, the message box
1193	becomes modal relative to \a parent.
1194
1195	\sa information(), question(), critical()
1196	*/
1197
1198	int QMessageBox::warning( QWidget *parent,
1199	const QString& caption, const QString& text,
1200	int button0, int button1, int button2 )
1201	{
1202	QMessageBox *mb = new QMessageBox( caption, text, Warning,
1203	button0, button1, button2,
1204	parent, "qt_msgbox_warning", TRUE,
1205	WDestructiveClose);
1206	Q_CHECK_PTR( mb );
1207	return mb->exec();
1208	}
1209
1210
1211	/*!
1212	Opens a critical message box with the caption \a caption and the
1213	text \a text. The dialog may have up to three buttons. Each of the
1214	button parameters, \a button0, \a button1 and \a button2 may be
1215	set to one of the following values:
1216
1217	\list
1218	\i QMessageBox::NoButton
1219	\i QMessageBox::Ok
1220	\i QMessageBox::Cancel
1221	\i QMessageBox::Yes
1222	\i QMessageBox::No
1223	\i QMessageBox::Abort
1224	\i QMessageBox::Retry
1225	\i QMessageBox::Ignore
1226	\i QMessageBox::YesAll
1227	\i QMessageBox::NoAll
1228	\endlist
1229
1230	If you don't want all three buttons, set the last button, or last
1231	two buttons to QMessageBox::NoButton.
1232
1233	One button can be OR-ed with \c QMessageBox::Default, and one
1234	button can be OR-ed with \c QMessageBox::Escape.
1235
1236	Returns the identity (QMessageBox::Ok, or QMessageBox::No, etc.)
1237	of the button that was clicked.
1238
1239	If \a parent is 0, the message box becomes an application-global
1240	modal dialog box. If \a parent is a widget, the message box
1241	becomes modal relative to \a parent.
1242
1243	\sa information(), question(), warning()
1244	*/
1245
1246	int QMessageBox::critical( QWidget *parent,
1247	const QString& caption, const QString& text,
1248	int button0, int button1, int button2 )
1249	{
1250	QMessageBox *mb = new QMessageBox( caption, text, Critical,
1251	button0, button1, button2,
1252	parent, "qt_msgbox_critical", TRUE,
1253	WDestructiveClose);
1254	Q_CHECK_PTR( mb );
1255	return mb->exec();
1256	}
1257
1258
1259	/*!
1260	Displays a simple about box with caption \a caption and text \a
1261	text. The about box's parent is \a parent.
1262
1263	about() looks for a suitable icon in four locations:
1264	\list 1
1265	\i It prefers \link QWidget::icon() parent->icon() \endlink if that exists.
1266	\i If not, it tries the top-level widget containing \a parent.
1267	\i If that fails, it tries the \link
1268	QApplication::mainWidget() main widget. \endlink
1269	\i As a last resort it uses the Information icon.
1270	\endlist
1271
1272	The about box has a single button labelled "OK".
1273
1274	\sa QWidget::icon() QApplication::mainWidget()
1275	*/
1276
1277	void QMessageBox::about( QWidget *parent, const QString &caption,
1278	const QString& text )
1279	{
1280	QMessageBox *mb = new QMessageBox( caption, text,
1281	Information,
1282	Ok + Default, 0, 0,
1283	parent, "qt_msgbox_simple_about_box", TRUE,
1284	WDestructiveClose);
1285	Q_CHECK_PTR( mb );
1286	#ifndef QT_NO_WIDGET_TOPEXTRA
1287	const QPixmap *pm = parent ? parent->icon() : 0;
1288	if ( pm && !pm->isNull() )
1289	mb->setIconPixmap( *pm );
1290	else {
1291	pm = parent ? parent->topLevelWidget()->icon() : 0;
1292	if ( pm && !pm->isNull() )
1293	mb->setIconPixmap( *pm );
1294	else {
1295	pm = qApp && qApp->mainWidget() ? qApp->mainWidget()->icon() : 0;
1296	if ( pm && !pm->isNull() )
1297	mb->setIconPixmap( *pm );
1298	}
1299	}
1300	#endif
1301	mb->exec();
1302	}
1303
1304
1305	/*! \reimp
1306	*/
1307
1308	void QMessageBox::styleChanged( QStyle& )
1309	{
1310	if ( mbd->icon != NoIcon ) {
1311	// Reload icon for new style
1312	setIcon( mbd->icon );
1313	}
1314	}
1315
1316
1317	static int textBox( QWidget *parent, QMessageBox::Icon severity,
1318	const QString& caption, const QString& text,
1319	const QString& button0Text,
1320	const QString& button1Text,
1321	const QString& button2Text,
1322	int defaultButtonNumber,
1323	int escapeButtonNumber )
1324	{
1325	int b[3];
1326	b[0] = 1;
1327	b[1] = button1Text.isEmpty() ? 0 : 2;
1328	b[2] = button2Text.isEmpty() ? 0 : 3;
1329
1330	int i;
1331	for( i=0; i<3; i++ ) {
1332	if ( b[i] && defaultButtonNumber == i )
1333	b[i] += QMessageBox::Default;
1334	if ( b[i] && escapeButtonNumber == i )
1335	b[i] += QMessageBox::Escape;
1336	}
1337
1338	QMessageBox *mb = new QMessageBox( caption, text, severity,
1339	b[0], b[1], b[2],
1340	parent, "qt_msgbox_information", TRUE,
1341	Qt::WDestructiveClose);
1342	Q_CHECK_PTR( mb );
1343	if ( button0Text.isEmpty() )
1344	mb->setButtonText( 1, QMessageBox::tr(mb_texts[QMessageBox::Ok]) );
1345	else
1346	mb->setButtonText( 1, button0Text );
1347	if ( b[1] )
1348	mb->setButtonText( 2, button1Text );
1349	if ( b[2] )
1350	mb->setButtonText( 3, button2Text );
1351
1352	#ifndef QT_NO_CURSOR
1353	mb->setCursor( Qt::arrowCursor );
1354	#endif
1355	return mb->exec() - 1;
1356	}
1357
1358
1359	/*!
1360	\overload
1361
1362	Displays an information message box with caption \a caption, text
1363	\a text and one, two or three buttons. Returns the index of the
1364	button that was clicked (0, 1 or 2).
1365
1366	\a button0Text is the text of the first button, and is optional.
1367	If \a button0Text is not supplied, "OK" (translated) will be used.
1368	\a button1Text is the text of the second button, and is optional.
1369	\a button2Text is the text of the third button, and is optional.
1370	\a defaultButtonNumber (0, 1 or 2) is the index of the default
1371	button; pressing Return or Enter is the same as clicking the
1372	default button. It defaults to 0 (the first button). \a
1373	escapeButtonNumber is the index of the Escape button; pressing
1374	Escape is the same as clicking this button. It defaults to -1;
1375	supply 0, 1 or 2 to make pressing Escape equivalent to clicking
1376	the relevant button.
1377
1378	If \a parent is 0, the message box becomes an application-global
1379	modal dialog box. If \a parent is a widget, the message box
1380	becomes modal relative to \a parent.
1381
1382	Note: If you do not specify an Escape button then if the Escape
1383	button is pressed then -1 will be returned. It is suggested that
1384	you specify an Escape button to prevent this from happening.
1385
1386	\sa question(), warning(), critical()
1387	*/
1388
1389	int QMessageBox::information( QWidget *parent, const QString &caption,
1390	const QString& text,
1391	const QString& button0Text,
1392	const QString& button1Text,
1393	const QString& button2Text,
1394	int defaultButtonNumber,
1395	int escapeButtonNumber )
1396	{
1397	return textBox( parent, Information, caption, text,
1398	button0Text, button1Text, button2Text,
1399	defaultButtonNumber, escapeButtonNumber );
1400	}
1401
1402	/*!
1403	\overload
1404
1405	Displays a question message box with caption \a caption, text \a
1406	text and one, two or three buttons. Returns the index of the
1407	button that was clicked (0, 1 or 2).
1408
1409	\a button0Text is the text of the first button, and is optional.
1410	If \a button0Text is not supplied, "OK" (translated) will be used.
1411	\a button1Text is the text of the second button, and is optional.
1412	\a button2Text is the text of the third button, and is optional.
1413	\a defaultButtonNumber (0, 1 or 2) is the index of the default
1414	button; pressing Return or Enter is the same as clicking the
1415	default button. It defaults to 0 (the first button). \a
1416	escapeButtonNumber is the index of the Escape button; pressing
1417	Escape is the same as clicking this button. It defaults to -1;
1418	supply 0, 1 or 2 to make pressing Escape equivalent to clicking
1419	the relevant button.
1420
1421	If \a parent is 0, the message box becomes an application-global
1422	modal dialog box. If \a parent is a widget, the message box
1423	becomes modal relative to \a parent.
1424
1425	Note: If you do not specify an Escape button then if the Escape
1426	button is pressed then -1 will be returned. It is suggested that
1427	you specify an Escape button to prevent this from happening.
1428
1429	\sa information(), warning(), critical()
1430	*/
1431	int QMessageBox::question( QWidget *parent, const QString &caption,
1432	const QString& text,
1433	const QString& button0Text,
1434	const QString& button1Text,
1435	const QString& button2Text,
1436	int defaultButtonNumber,
1437	int escapeButtonNumber )
1438	{
1439	return textBox( parent, Question, caption, text,
1440	button0Text, button1Text, button2Text,
1441	defaultButtonNumber, escapeButtonNumber );
1442	}
1443
1444
1445	/*!
1446	\overload
1447
1448	Displays a warning message box with a caption, a text, and 1, 2 or
1449	3 buttons. Returns the number of the button that was clicked (0,
1450	1, or 2).
1451
1452	\a button0Text is the text of the first button, and is optional.
1453	If \a button0Text is not supplied, "OK" (translated) will be used.
1454	\a button1Text is the text of the second button, and is optional,
1455	and \a button2Text is the text of the third button, and is
1456	optional. \a defaultButtonNumber (0, 1 or 2) is the index of the
1457	default button; pressing Return or Enter is the same as clicking
1458	the default button. It defaults to 0 (the first button). \a
1459	escapeButtonNumber is the index of the Escape button; pressing
1460	Escape is the same as clicking this button. It defaults to -1;
1461	supply 0, 1, or 2 to make pressing Escape equivalent to clicking
1462	the relevant button.
1463
1464	If \a parent is 0, the message box becomes an application-global
1465	modal dialog box. If \a parent is a widget, the message box
1466	becomes modal relative to \a parent.
1467
1468	Note: If you do not specify an Escape button then if the Escape
1469	button is pressed then -1 will be returned. It is suggested that
1470	you specify an Escape button to prevent this from happening.
1471
1472	\sa information(), question(), critical()
1473	*/
1474
1475	int QMessageBox::warning( QWidget *parent, const QString &caption,
1476	const QString& text,
1477	const QString& button0Text,
1478	const QString& button1Text,
1479	const QString& button2Text,
1480	int defaultButtonNumber,
1481	int escapeButtonNumber )
1482	{
1483	return textBox( parent, Warning, caption, text,
1484	button0Text, button1Text, button2Text,
1485	defaultButtonNumber, escapeButtonNumber );
1486	}
1487
1488
1489	/*!
1490	\overload
1491
1492	Displays a critical error message box with a caption, a text, and
1493	1, 2 or 3 buttons. Returns the number of the button that was
1494	clicked (0, 1 or 2).
1495
1496	\a button0Text is the text of the first button, and is optional.
1497	If \a button0Text is not supplied, "OK" (translated) will be used.
1498	\a button1Text is the text of the second button, and is optional,
1499	and \a button2Text is the text of the third button, and is
1500	optional. \a defaultButtonNumber (0, 1 or 2) is the index of the
1501	default button; pressing Return or Enter is the same as clicking
1502	the default button. It defaults to 0 (the first button). \a
1503	escapeButtonNumber is the index of the Escape button; pressing
1504	Escape is the same as clicking this button. It defaults to -1;
1505	supply 0, 1, or 2 to make pressing Escape equivalent to clicking
1506	the relevant button.
1507
1508	If \a parent is 0, the message box becomes an application-global
1509	modal dialog box. If \a parent is a widget, the message box
1510	becomes modal relative to \a parent.
1511
1512	\sa information(), question(), warning()
1513	*/
1514
1515	int QMessageBox::critical( QWidget *parent, const QString &caption,
1516	const QString& text,
1517	const QString& button0Text,
1518	const QString& button1Text,
1519	const QString& button2Text,
1520	int defaultButtonNumber,
1521	int escapeButtonNumber )
1522	{
1523	return textBox( parent, Critical, caption, text,
1524	button0Text, button1Text, button2Text,
1525	defaultButtonNumber, escapeButtonNumber );
1526	}
1527
1528
1529	/*!
1530	Displays a simple message box about Qt, with caption \a caption
1531	and centered over \a parent (if \a parent is not 0). The message
1532	includes the version number of Qt being used by the application.
1533
1534	This is useful for inclusion in the Help menu of an application.
1535	See the examples/menu/menu.cpp example.
1536
1537	QApplication provides this functionality as a slot.
1538
1539	\sa QApplication::aboutQt()
1540	*/
1541
1542	void QMessageBox::aboutQt( QWidget *parent, const QString &caption )
1543	{
1544	QMessageBox *mb = new QMessageBox( parent, "qt_msgbox_about_qt" );
1545	Q_CHECK_PTR( mb );
1546	mb->setWFlags( WDestructiveClose );
1547
1548	#ifndef QT_NO_WIDGET_TOPEXTRA
1549	QString c = caption;
1550	if ( c.isNull() )
1551	c = tr( "About Qt" );
1552	mb->setCaption( c );
1553	#endif
1554	mb->setText( *translatedTextAboutQt );
1555	#ifndef QT_NO_IMAGEIO
1556	QPixmap pm;
1557	QImage logo( (const char **)qtlogo_xpm);
1558	if ( qGray(mb->palette().active().text().rgb()) >
1559	qGray(mb->palette().active().base().rgb()) )
1560	{
1561	// light on dark, adjust some colors (where's 10?)
1562	logo.setColor( 0, 0xffffffff );
1563	logo.setColor( 1, 0xff666666 );
1564	logo.setColor( 2, 0xffcccc66 );
1565	logo.setColor( 4, 0xffcccccc );
1566	logo.setColor( 6, 0xffffff66 );
1567	logo.setColor( 7, 0xff999999 );
1568	logo.setColor( 8, 0xff3333ff );
1569	logo.setColor( 9, 0xffffff33 );
1570	logo.setColor( 11, 0xffcccc99 );
1571	}
1572	if ( pm.convertFromImage( logo ) )
1573	mb->setIconPixmap( pm );
1574	#endif
1575	mb->setButtonText( 0, tr("OK") );
1576	if ( mb->mbd && mb->mbd->pb[0] ) {
1577	mb->mbd->pb[0]->setAutoDefault( TRUE );
1578	mb->mbd->pb[0]->setFocusPolicy( QWidget::StrongFocus );
1579	mb->mbd->pb[0]->setDefault( TRUE );
1580	mb->mbd->pb[0]->setFocus();
1581	}
1582	mb->exec();
1583	}
1584
1585	/*!
1586	\reimp
1587	*/
1588
1589	void QMessageBox::setIcon( const QPixmap &pix )
1590	{
1591	//reimplemented to avoid compiler warning.
1592	#ifndef QT_NO_WIDGET_TOPEXTRA
1593	QDialog::setIcon( pix );
1594	#endif
1595	}
1596
1597
1598	/*!
1599	\property QMessageBox::textFormat
1600	\brief the format of the text displayed by the message box
1601
1602	The current text format used by the message box. See the \l
1603	Qt::TextFormat enum for an explanation of the possible options.
1604
1605	The default format is \c AutoText.
1606
1607	\sa setText()
1608	*/
1609
1610	Qt::TextFormat QMessageBox::textFormat() const
1611	{
1612	return label->textFormat();
1613	}
1614
1615
1616	void QMessageBox::setTextFormat( Qt::TextFormat format )
1617	{
1618	label->setTextFormat( format );
1619	}
1620
1621
1622	#endif

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source: vendor/trolltech/current/src/dialogs/qmessagebox.cpp

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