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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 > An MDI Application< / h1 >
< p >
This example program is just like the application example, except
that it provides a Multiple Document Interface (MDI).
< p > < hr >
< p > Header file:
< p > < pre > /****************************************************************************
** $Id: qt/application.h 3.3.8 edited Jan 11 14:37 $
**
** Copyright (C) 1992-2007 Trolltech ASA. All rights reserved.
**
** This file is part of an example program for TQt. This example
** program may be used, distributed and modified without limitation.
**
*****************************************************************************/
#ifndef APPLICATION_H
#define APPLICATION_H
#include < < a href = "qmainwindow-h.html" > qmainwindow.h< / a > >
#include < < a href = "qptrlist-h.html" > qptrlist.h< / a > >
class TQTextEdit;
class TQToolBar;
class TQPopupMenu;
class TQWorkspace;
class TQPopupMenu;
class TQMovie;
class MDIWindow: public < a href = "qmainwindow.html" > TQMainWindow< / a >
{
< a href = "metaobjects.html#Q_OBJECT" > Q_OBJECT< / a >
public:
MDIWindow( < a href = "qwidget.html" > TQWidget< / a > * parent, const char* name, int wflags );
~MDIWindow();
void load( const < a href = "qstring.html" > TQString< / a > & fn );
void save();
void saveAs();
void print( < a href = "qprinter.html" > TQPrinter< / a > * );
protected:
void closeEvent( < a href = "qcloseevent.html" > TQCloseEvent< / a > * );
signals:
void message(const < a href = "qstring.html" > TQString< / a > & , int );
private:
< a href = "qtextedit.html" > TQTextEdit< / a > * medit;
< a href = "qmovie.html" > TQMovie< / a > * mmovie;
< a href = "qstring.html" > TQString< / a > filename;
};
class ApplicationWindow: public < a href = "qmainwindow.html" > TQMainWindow< / a >
{
Q_OBJECT
public:
ApplicationWindow();
~ApplicationWindow();
protected:
void closeEvent( < a href = "qcloseevent.html" > TQCloseEvent< / a > * );
private slots:
MDIWindow* newDoc();
void load();
void save();
void saveAs();
void print();
void closeWindow();
void tileHorizontal();
void about();
void aboutTQt();
void windowsMenuAboutToShow();
void windowsMenuActivated( int id );
private:
< a href = "qprinter.html" > TQPrinter< / a > *printer;
< a href = "qworkspace.html" > TQWorkspace< / a > * ws;
< a href = "qtoolbar.html" > TQToolBar< / a > *fileTools;
< a href = "qpopupmenu.html" > TQPopupMenu< / a > * windowsMenu;
};
#endif
< / pre >
< p > < hr >
< p > Implementation:
< p > < pre > /****************************************************************************
** $Id: qt/application.cpp 3.3.8 edited Jan 11 14:37 $
**
** Copyright (C) 1992-2007 Trolltech ASA. All rights reserved.
**
** This file is part of an example program for TQt. This example
** program may be used, distributed and modified without limitation.
**
*****************************************************************************/
#include "application.h"
#include < < a href = "qworkspace-h.html" > qworkspace.h< / a > >
#include < < a href = "qimage-h.html" > qimage.h< / a > >
#include < < a href = "qpixmap-h.html" > qpixmap.h< / a > >
#include < < a href = "qtoolbar-h.html" > qtoolbar.h< / a > >
#include < < a href = "qtoolbutton-h.html" > qtoolbutton.h< / a > >
#include < < a href = "qpopupmenu-h.html" > qpopupmenu.h< / a > >
#include < < a href = "qmenubar-h.html" > qmenubar.h< / a > >
#include < < a href = "qmovie-h.html" > qmovie.h< / a > >
#include < < a href = "qfile-h.html" > qfile.h< / a > >
#include < < a href = "qfiledialog-h.html" > qfiledialog.h< / a > >
#include < < a href = "qlabel-h.html" > qlabel.h< / a > >
#include < < a href = "qstatusbar-h.html" > qstatusbar.h< / a > >
#include < < a href = "qmessagebox-h.html" > qmessagebox.h< / a > >
#include < < a href = "qprinter-h.html" > qprinter.h< / a > >
#include < < a href = "qapplication-h.html" > qapplication.h< / a > >
#include < < a href = "qpushbutton-h.html" > qpushbutton.h< / a > >
#include < < a href = "qaccel-h.html" > qaccel.h< / a > >
#include < < a href = "qtextstream-h.html" > qtextstream.h< / a > >
#include < < a href = "qtextedit-h.html" > qtextedit.h< / a > >
#include < < a href = "qpainter-h.html" > qpainter.h< / a > >
#include < < a href = "qpaintdevicemetrics-h.html" > qpaintdevicemetrics.h< / a > >
#include < < a href = "qwhatsthis-h.html" > qwhatsthis.h< / a > >
#include < < a href = "qobjectlist-h.html" > qobjectlist.h< / a > >
#include < < a href = "qvbox-h.html" > qvbox.h< / a > >
#include < < a href = "qsimplerichtext-h.html" > qsimplerichtext.h< / a > >
#include "filesave.xpm"
#include "fileopen.xpm"
#include "fileprint.xpm"
const char * fileOpenText = "Click this button to open a < em> new file< /em> . < br> < br> "
"You can also select the < b> Open command< /b> from the File menu.";
const char * fileSaveText = "Click this button to save the file you are "
"editing. You will be prompted for a file name.\n\n"
"You can also select the Save command from the File menu.\n\n"
"Note that implementing this function is left as an exercise for the reader.";
const char * filePrintText = "Click this button to print the file you "
"are editing.\n\n"
"You can also select the Print command from the File menu.";
< a name = "f535" > < / a > ApplicationWindow::ApplicationWindow()
: < a href = "qmainwindow.html" > TQMainWindow< / a > ( 0, "example application main window", WDestructiveClose )
{
int id;
< a href = "qpixmap.html" > TQPixmap< / a > openIcon, saveIcon;
fileTools = new < a href = "qtoolbar.html" > TQToolBar< / a > ( this, "file operations" );
< a href = "qmainwindow.html#addToolBar" > addToolBar< / a > ( fileTools, tr( "File Operations" ), DockTop, TRUE );
openIcon = TQPixmap( fileopen );
TQToolButton * fileOpen
= new < a href = "qtoolbutton.html" > TQToolButton< / a > ( openIcon, "Open File", < a href = "qstring.html#TQString-null" > TQString::null< / a > ,
this, SLOT(load()), fileTools, "open file" );
saveIcon = TQPixmap( filesave );
TQToolButton * fileSave
= new < a href = "qtoolbutton.html" > TQToolButton< / a > ( saveIcon, "Save File", TQString::null,
this, SLOT(save()), fileTools, "save file" );
#ifndef QT_NO_PRINTER
printer = new < a href = "qprinter.html" > TQPrinter< / a > ( TQPrinter::HighResolution );
< a href = "qpixmap.html" > TQPixmap< / a > printIcon;
printIcon = TQPixmap( fileprint );
TQToolButton * filePrint
= new < a href = "qtoolbutton.html" > TQToolButton< / a > ( printIcon, "Print File", TQString::null,
this, SLOT(print()), fileTools, "print file" );
< a name = "x2075" > < / a > TQWhatsThis::< a href = "qwhatsthis.html#add" > add< / a > ( filePrint, filePrintText );
#endif
(void)TQWhatsThis::whatsThisButton( fileTools );
TQWhatsThis::< a href = "qwhatsthis.html#add" > add< / a > ( fileOpen, fileOpenText );
TQWhatsThis::< a href = "qwhatsthis.html#add" > add< / a > ( fileSave, fileSaveText );
< a href = "qpopupmenu.html" > TQPopupMenu< / a > * file = new < a href = "qpopupmenu.html" > TQPopupMenu< / a > ( this );
< a href = "qmainwindow.html#menuBar" > menuBar< / a > ()-> insertItem( "& File", file );
file-> < a href = "qmenudata.html#insertItem" > insertItem< / a > ( "& New", this, SLOT(newDoc()), CTRL+Key_N );
id = file-> < a href = "qmenudata.html#insertItem" > insertItem< / a > ( openIcon, "& Open...",
this, SLOT(load()), CTRL+Key_O );
< a name = "x2035" > < / a > file-> < a href = "qmenudata.html#setWhatsThis" > setWhatsThis< / a > ( id, fileOpenText );
id = file-> < a href = "qmenudata.html#insertItem" > insertItem< / a > ( saveIcon, "& Save",
this, SLOT(save()), CTRL+Key_S );
file-> < a href = "qmenudata.html#setWhatsThis" > setWhatsThis< / a > ( id, fileSaveText );
id = file-> < a href = "qmenudata.html#insertItem" > insertItem< / a > ( "Save & As...", this, SLOT(saveAs()) );
file-> < a href = "qmenudata.html#setWhatsThis" > setWhatsThis< / a > ( id, fileSaveText );
#ifndef QT_NO_PRINTER
file-> < a href = "qmenudata.html#insertSeparator" > insertSeparator< / a > ();
id = file-> < a href = "qmenudata.html#insertItem" > insertItem< / a > ( printIcon, "& Print...",
this, SLOT(print()), CTRL+Key_P );
file-> < a href = "qmenudata.html#setWhatsThis" > setWhatsThis< / a > ( id, filePrintText );
#endif
file-> < a href = "qmenudata.html#insertSeparator" > insertSeparator< / a > ();
file-> < a href = "qmenudata.html#insertItem" > insertItem< / a > ( "& Close", this, SLOT(closeWindow()), CTRL+Key_W );
< a name = "x2020" > < / a > file-> < a href = "qmenudata.html#insertItem" > insertItem< / a > ( "& Quit", qApp, SLOT( < a href = "qapplication.html#closeAllWindows" > closeAllWindows< / a > () ), CTRL+Key_Q );
windowsMenu = new < a href = "qpopupmenu.html" > TQPopupMenu< / a > ( this );
< a name = "x2049" > < / a > windowsMenu-> < a href = "qpopupmenu.html#setCheckable" > setCheckable< / a > ( TRUE );
< a name = "x2048" > < / a > < a href = "qobject.html#connect" > connect< / a > ( windowsMenu, SIGNAL( < a href = "qpopupmenu.html#aboutToShow" > aboutToShow< / a > () ),
this, SLOT( windowsMenuAboutToShow() ) );
< a href = "qmainwindow.html#menuBar" > menuBar< / a > ()-> insertItem( "& Windows", windowsMenu );
< a href = "qmainwindow.html#menuBar" > menuBar< / a > ()-> insertSeparator();
< a href = "qpopupmenu.html" > TQPopupMenu< / a > * help = new < a href = "qpopupmenu.html" > TQPopupMenu< / a > ( this );
< a href = "qmainwindow.html#menuBar" > menuBar< / a > ()-> insertItem( "& Help", help );
help-> < a href = "qmenudata.html#insertItem" > insertItem< / a > ( "& About", this, SLOT(about()), Key_F1);
help-> < a href = "qmenudata.html#insertItem" > insertItem< / a > ( "About & TQt", this, SLOT(aboutTQt()));
help-> < a href = "qmenudata.html#insertSeparator" > insertSeparator< / a > ();
help-> < a href = "qmenudata.html#insertItem" > insertItem< / a > ( "What's & This", this, SLOT(< a href = "qmainwindow.html#whatsThis" > whatsThis< / a > ()), SHIFT+Key_F1);
< a href = "qvbox.html" > TQVBox< / a > * vb = new < a href = "qvbox.html" > TQVBox< / a > ( this );
vb-> < a href = "qframe.html#setFrameStyle" > setFrameStyle< / a > ( TQFrame::StyledPanel | TQFrame::Sunken );
ws = new < a href = "qworkspace.html" > TQWorkspace< / a > ( vb );
< a name = "x2092" > < / a > ws-> < a href = "qworkspace.html#setScrollBarsEnabled" > setScrollBarsEnabled< / a > ( TRUE );
< a href = "qmainwindow.html#setCentralWidget" > setCentralWidget< / a > ( vb );
< a href = "qmainwindow.html#statusBar" > statusBar< / a > ()-> message( "Ready", 2000 );
}
ApplicationWindow::~ApplicationWindow()
{
#ifndef QT_NO_PRINTER
delete printer;
#endif
}
MDIWindow* < a name = "f536" > < / a > ApplicationWindow::newDoc()
{
MDIWindow* w = new MDIWindow( ws, 0, WDestructiveClose );
< a href = "qobject.html#connect" > connect< / a > ( w, SIGNAL( message(const < a href = "qstring.html" > TQString< / a > & , int) ), statusBar(), SLOT( message(const < a href = "qstring.html" > TQString< / a > & , int )) );
w-> < a href = "qwidget.html#setCaption" > setCaption< / a > ("unnamed document");
< a name = "x2085" > < / a > w-> < a href = "qwidget.html#setIcon" > setIcon< / a > ( TQPixmap("document.xpm") );
// show the very first window in maximized mode
< a name = "x2094" > < / a > if ( ws-> < a href = "qworkspace.html#windowList" > windowList< / a > ().isEmpty() )
< a name = "x2087" > < / a > w-> < a href = "qwidget.html#showMaximized" > showMaximized< / a > ();
else
w-> < a href = "qwidget.html#show" > show< / a > ();
return w;
}
void < a name = "f537" > < / a > ApplicationWindow::load()
{
< a href = "qstring.html" > TQString< / a > fn = TQFileDialog::< a href = "qfiledialog.html#getOpenFileName" > getOpenFileName< / a > ( TQString::null, TQString::null, this );
if ( !fn.< a href = "qstring.html#isEmpty" > isEmpty< / a > () ) {
MDIWindow* w = newDoc();
w-> load( fn );
} else {
< a href = "qmainwindow.html#statusBar" > statusBar< / a > ()-> message( "Loading aborted", 2000 );
}
}
void < a name = "f538" > < / a > ApplicationWindow::save()
{
< a name = "x2090" > < / a > MDIWindow* m = (MDIWindow*)ws-> < a href = "qworkspace.html#activeWindow" > activeWindow< / a > ();
if ( m )
m-> save();
}
void < a name = "f539" > < / a > ApplicationWindow::saveAs()
{
MDIWindow* m = (MDIWindow*)ws-> < a href = "qworkspace.html#activeWindow" > activeWindow< / a > ();
if ( m )
m-> saveAs();
}
void < a name = "f540" > < / a > ApplicationWindow::print()
{
#ifndef QT_NO_PRINTER
MDIWindow* m = (MDIWindow*)ws-> < a href = "qworkspace.html#activeWindow" > activeWindow< / a > ();
if ( m )
m-> print( printer );
#endif
}
void < a name = "f541" > < / a > ApplicationWindow::closeWindow()
{
MDIWindow* m = (MDIWindow*)ws-> < a href = "qworkspace.html#activeWindow" > activeWindow< / a > ();
if ( m )
< a name = "x2076" > < / a > m-> < a href = "qwidget.html#close" > close< / a > ();
}
void < a name = "f542" > < / a > ApplicationWindow::about()
{
< a name = "x2036" > < / a > TQMessageBox::< a href = "qmessagebox.html#about" > about< / a > ( this, "TQt Application Example",
"This example demonstrates simple use of\n "
"TQt's Multiple Document Interface (MDI).");
}
void < a name = "f543" > < / a > ApplicationWindow::aboutTQt()
{
TQMessageBox::< a href = "qmessagebox.html#aboutTQt" > aboutTQt< / a > ( this, "TQt Application Example" );
}
void < a name = "f544" > < / a > ApplicationWindow::windowsMenuAboutToShow()
{
< a name = "x2029" > < / a > windowsMenu-> < a href = "qmenudata.html#clear" > clear< / a > ();
< a name = "x2091" > < / a > int cascadeId = windowsMenu-> < a href = "qmenudata.html#insertItem" > insertItem< / a > ("& Cascade", ws, SLOT(< a href = "qworkspace.html#cascade" > cascade< / a > () ) );
< a name = "x2093" > < / a > int tileId = windowsMenu-> < a href = "qmenudata.html#insertItem" > insertItem< / a > ("& Tile", ws, SLOT(< a href = "qworkspace.html#tile" > tile< / a > () ) );
int horTileId = windowsMenu-> < a href = "qmenudata.html#insertItem" > insertItem< / a > ("Tile & Horizontally", this, SLOT(tileHorizontal() ) );
if ( ws-> < a href = "qworkspace.html#windowList" > windowList< / a > ().isEmpty() ) {
< a name = "x2033" > < / a > windowsMenu-> < a href = "qmenudata.html#setItemEnabled" > setItemEnabled< / a > ( cascadeId, FALSE );
windowsMenu-> < a href = "qmenudata.html#setItemEnabled" > setItemEnabled< / a > ( tileId, FALSE );
windowsMenu-> < a href = "qmenudata.html#setItemEnabled" > setItemEnabled< / a > ( horTileId, FALSE );
}
windowsMenu-> < a href = "qmenudata.html#insertSeparator" > insertSeparator< / a > ();
TQWidgetList windows = ws-> < a href = "qworkspace.html#windowList" > windowList< / a > ();
< a name = "x2054" > < / a > for ( int i = 0; i < int(windows.count()); ++i ) {
< a name = "x2053" > < / a > int id = windowsMenu-> < a href = "qmenudata.html#insertItem" > insertItem< / a > (windows.at(i)-> caption(),
this, SLOT( windowsMenuActivated( int ) ) );
< a name = "x2034" > < / a > windowsMenu-> < a href = "qmenudata.html#setItemParameter" > setItemParameter< / a > ( id, i );
< a name = "x2032" > < / a > windowsMenu-> < a href = "qmenudata.html#setItemChecked" > setItemChecked< / a > ( id, ws-> < a href = "qworkspace.html#activeWindow" > activeWindow< / a > () == windows.at(i) );
}
}
void < a name = "f545" > < / a > ApplicationWindow::windowsMenuActivated( int id )
{
< a href = "qwidget.html" > TQWidget< / a > * w = ws-> < a href = "qworkspace.html#windowList" > windowList< / a > ().at( id );
if ( w )
< a name = "x2088" > < / a > w-> < a href = "qwidget.html#showNormal" > showNormal< / a > ();
< a name = "x2084" > < / a > w-> < a href = "qwidget.html#setFocus" > setFocus< / a > ();
}
void < a name = "f546" > < / a > ApplicationWindow::tileHorizontal()
{
// primitive horizontal tiling
TQWidgetList windows = ws-> < a href = "qworkspace.html#windowList" > windowList< / a > ();
if ( !windows.count() )
return;
if (ws-> < a href = "qworkspace.html#activeWindow" > activeWindow< / a > ())
ws-> < a href = "qworkspace.html#activeWindow" > activeWindow< / a > ()-> showNormal();
< a name = "x2078" > < / a > int heightForEach = ws-> < a href = "qwidget.html#height" > height< / a > () / windows.count();
int y = 0;
for ( int i = 0; i < int(windows.count()); ++i ) {
< a href = "qwidget.html" > TQWidget< / a > *window = windows.at(i);
< a name = "x2081" > < / a > < a name = "x2080" > < / a > int preferredHeight = window-> < a href = "qwidget.html#minimumHeight" > minimumHeight< / a > ()+window-> < a href = "qwidget.html#parentWidget" > parentWidget< / a > ()-> baseSize().height();
int actHeight = TQMAX(heightForEach, preferredHeight);
< a name = "x2089" > < / a > window-> < a href = "qwidget.html#parentWidget" > parentWidget< / a > ()-> setGeometry( 0, y, ws-> < a href = "qwidget.html#width" > width< / a > (), actHeight );
y += actHeight;
}
}
< a name = "x2077" > < / a > void ApplicationWindow::< a href = "qwidget.html#closeEvent" > closeEvent< / a > ( < a href = "qcloseevent.html" > TQCloseEvent< / a > *e )
{
TQWidgetList windows = ws-> < a href = "qworkspace.html#windowList" > windowList< / a > ();
if ( windows.count() ) {
for ( int i = 0; i < int(windows.count()); ++i ) {
< a href = "qwidget.html" > TQWidget< / a > *window = windows.at( i );
if ( !window-> < a href = "qwidget.html#close" > close< / a > () ) {
< a name = "x2022" > < / a > e-> < a href = "qcloseevent.html#ignore" > ignore< / a > ();
return;
}
}
}
TQMainWindow::< a href = "qwidget.html#closeEvent" > closeEvent< / a > ( e );
}
< a name = "f547" > < / a > MDIWindow::MDIWindow( < a href = "qwidget.html" > TQWidget< / a > * parent, const char* name, int wflags )
: < a href = "qmainwindow.html" > TQMainWindow< / a > ( parent, name, wflags )
{
mmovie = 0;
medit = new < a href = "qtextedit.html" > TQTextEdit< / a > ( this );
< a href = "qwidget.html#setFocusProxy" > setFocusProxy< / a > ( medit );
< a href = "qmainwindow.html#setCentralWidget" > setCentralWidget< / a > ( medit );
}
MDIWindow::~MDIWindow()
{
delete mmovie;
}
void MDIWindow::< a href = "qwidget.html#closeEvent" > closeEvent< / a > ( < a href = "qcloseevent.html" > TQCloseEvent< / a > *e )
{
< a name = "x2069" > < / a > if ( medit-> < a href = "qtextedit.html#isModified" > isModified< / a > () ) {
switch( TQMessageBox::< a href = "qmessagebox.html#warning" > warning< / a > ( this, "Save Changes",
< a href = "qobject.html#tr" > tr< / a > ("Save changes to %1?").arg( < a href = "qwidget.html#caption" > caption< / a > () ),
< a href = "qobject.html#tr" > tr< / a > ("Yes"), tr("No"), tr("Cancel") ) ) {
case 0:
{
save();
if ( !filename.isEmpty() )
< a name = "x2021" > < / a > e-> < a href = "qcloseevent.html#accept" > accept< / a > ();
else
e-> < a href = "qcloseevent.html#ignore" > ignore< / a > ();
}
break;
case 1:
e-> < a href = "qcloseevent.html#accept" > accept< / a > ();
break;
default:
e-> < a href = "qcloseevent.html#ignore" > ignore< / a > ();
break;
}
} else {
e-> < a href = "qcloseevent.html#accept" > accept< / a > ();
}
}
void < a name = "f548" > < / a > MDIWindow::load( const < a href = "qstring.html" > TQString< / a > & fn )
{
filename = fn;
< a href = "qfile.html" > TQFile< / a > f( filename );
if ( !f.< a href = "qfile.html#open" > open< / a > ( < a href = "qfile.html#open" > IO_ReadOnly< / a > ) )
return;
< a name = "x2064" > < / a > if(fn.< a href = "qstring.html#contains" > contains< / a > (".gif")) {
< a href = "qwidget.html" > TQWidget< / a > * tmp=new < a href = "qwidget.html" > TQWidget< / a > (this);
< a href = "qwidget.html#setFocusProxy" > setFocusProxy< / a > (tmp);
< a href = "qmainwindow.html#setCentralWidget" > setCentralWidget< / a > (tmp);
< a name = "x2079" > < / a > medit-> < a href = "qwidget.html#hide" > hide< / a > ();
delete medit;
< a href = "qmovie.html" > TQMovie< / a > * qm=new < a href = "qmovie.html" > TQMovie< / a > (fn);
#ifdef Q_WS_QWS // temporary speed-test hack
< a name = "x2039" > < / a > qm-> setDisplayWidget(tmp);
#endif
< a name = "x2082" > < / a > tmp-> < a href = "qwidget.html#setBackgroundMode" > setBackgroundMode< / a > (TQWidget::NoBackground);
tmp-> < a href = "qwidget.html#show" > show< / a > ();
mmovie=qm;
} else {
mmovie = 0;
< a href = "qtextstream.html" > TQTextStream< / a > t(& f);
< a name = "x2074" > < / a > < a href = "qstring.html" > TQString< / a > s = t.< a href = "qtextstream.html#read" > read< / a > ();
medit-> < a href = "qtextedit.html#setText" > setText< / a > ( s );
< a name = "x2023" > < / a > f.< a href = "qfile.html#close" > close< / a > ();
}
< a href = "qwidget.html#setCaption" > setCaption< / a > ( filename );
emit message( TQString("Loaded document %1").arg(filename), 2000 );
}
void < a name = "f549" > < / a > MDIWindow::save()
{
if ( filename.isEmpty() ) {
saveAs();
return;
}
< a name = "x2073" > < / a > < a href = "qstring.html" > TQString< / a > text = medit-> < a href = "qtextedit.html#text" > text< / a > ();
< a href = "qfile.html" > TQFile< / a > f( filename );
if ( !f.< a href = "qfile.html#open" > open< / a > ( < a href = "qfile.html#open" > IO_WriteOnly< / a > ) ) {
emit message( TQString("Could not write to %1").arg(filename),
2000 );
return;
}
< a href = "qtextstream.html" > TQTextStream< / a > t( & f );
t < < text;
f.< a href = "qfile.html#close" > close< / a > ();
< a href = "qwidget.html#setCaption" > setCaption< / a > ( filename );
emit message( TQString( "File %1 saved" ).arg( filename ), 2000 );
}
void < a name = "f550" > < / a > MDIWindow::saveAs()
{
< a href = "qstring.html" > TQString< / a > fn = TQFileDialog::< a href = "qfiledialog.html#getSaveFileName" > getSaveFileName< / a > ( filename, TQString::null, this );
if ( !fn.< a href = "qstring.html#isEmpty" > isEmpty< / a > () ) {
filename = fn;
save();
} else {
emit message( "Saving aborted", 2000 );
}
}
void < a name = "f551" > < / a > MDIWindow::print( < a href = "qprinter.html" > TQPrinter< / a > * printer)
{
#ifndef QT_NO_PRINTER
int pageNo = 1;
< a name = "x2052" > < / a > if ( printer-> < a href = "qprinter.html#setup" > setup< / a > (this) ) { // printer dialog
< a name = "x2051" > < / a > printer-> < a href = "qprinter.html#setFullPage" > setFullPage< / a > ( TRUE );
emit message( "Printing...", 0 );
< a href = "qpainter.html" > TQPainter< / a > p;
if ( !p.< a href = "qpainter.html#begin" > begin< / a > ( printer ) )
return; // paint on printer
< a name = "x2044" > < / a > < a href = "qpaintdevicemetrics.html" > TQPaintDeviceMetrics< / a > metrics( p.< a href = "qpainter.html#device" > device< / a > () );
< a name = "x2041" > < / a > int dpiy = metrics.< a href = "qpaintdevicemetrics.html#logicalDpiY" > logicalDpiY< / a > ();
int margin = (int) ( (2/2.54)*dpiy ); // 2 cm margins
< a name = "x2042" > < / a > < a name = "x2040" > < / a > < a href = "qrect.html" > TQRect< / a > view( margin, margin, metrics.< a href = "qpaintdevicemetrics.html#width" > width< / a > () - 2*margin, metrics.< a href = "qpaintdevicemetrics.html#height" > height< / a > () - 2*margin );
< a name = "x2067" > < / a > < a href = "qsimplerichtext.html" > TQSimpleRichText< / a > richText( TQStyleSheet::< a href = "qstylesheet.html#convertFromPlainText" > convertFromPlainText< / a > (medit-> < a href = "qtextedit.html#text" > text< / a > ()),
TQFont(),
< a name = "x2068" > < / a > medit-> < a href = "qtextedit.html#context" > context< / a > (),
< a name = "x2072" > < / a > medit-> < a href = "qtextedit.html#styleSheet" > styleSheet< / a > (),
< a name = "x2070" > < / a > medit-> < a href = "qtextedit.html#mimeSourceFactory" > mimeSourceFactory< / a > (),
view.< a href = "qrect.html#height" > height< / a > () );
< a name = "x2063" > < / a > richText.< a href = "qsimplerichtext.html#setWidth" > setWidth< / a > ( & p, view.< a href = "qrect.html#width" > width< / a > () );
int page = 1;
do {
< a name = "x2061" > < / a > richText.< a href = "qsimplerichtext.html#draw" > draw< / a > ( & p, margin, margin, view, colorGroup() );
< a name = "x2057" > < / a > view.< a href = "qrect.html#moveBy" > moveBy< / a > ( 0, view.< a href = "qrect.html#height" > height< / a > () );
p.< a href = "qpainter.html#translate" > translate< / a > ( 0 , -view.< a href = "qrect.html#height" > height< / a > () );
< a name = "x2066" > < / a > < a name = "x2046" > < / a > p.< a href = "qpainter.html#drawText" > drawText< / a > ( view.< a href = "qrect.html#right" > right< / a > () - p.< a href = "qpainter.html#fontMetrics" > fontMetrics< / a > ().width( TQString::< a href = "qstring.html#number" > number< / a > ( page ) ),
view.< a href = "qrect.html#bottom" > bottom< / a > () + p.< a href = "qpainter.html#fontMetrics" > fontMetrics< / a > ().ascent() + 5, TQString::number( page ) );
< a name = "x2062" > < / a > if ( view.< a href = "qrect.html#top" > top< / a > () - margin > = richText.< a href = "qsimplerichtext.html#height" > height< / a > () )
break;
< a href = "qstring.html" > TQString< / a > msg( "Printing (page " );
msg += TQString::< a href = "qstring.html#number" > number< / a > ( ++pageNo );
msg += ")...";
emit message( msg, 0 );
< a name = "x2050" > < / a > printer-> < a href = "qprinter.html#newPage" > newPage< / a > ();
page++;
} while (TRUE);
}
#endif
}
< / pre >
< p > < hr >
< p > Main:
< p > < pre > /****************************************************************************
** $Id: qt/main.cpp 3.3.8 edited Jan 11 14:37 $
**
** Copyright (C) 1992-2007 Trolltech ASA. All rights reserved.
**
** This file is part of an example program for TQt. This example
** program may be used, distributed and modified without limitation.
**
*****************************************************************************/
#include < < a href = "qapplication-h.html" > qapplication.h< / a > >
#include "application.h"
int main( int argc, char ** argv ) {
< a href = "qapplication.html" > TQApplication< / a > a( argc, argv );
ApplicationWindow * mw = new ApplicationWindow();
a.< a href = "qapplication.html#setMainWidget" > setMainWidget< / a > (mw);
mw-> < a href = "qwidget.html#setCaption" > setCaption< / a > ( "TQt Example - Multiple Documents Interface (MDI)" );
mw-> < a href = "qwidget.html#show" > show< / a > ();
< a name = "x2097" > < / a > < a name = "x2096" > < / a > a.< a href = "qobject.html#connect" > connect< / a > ( & a, SIGNAL(< a href = "qapplication.html#lastWindowClosed" > lastWindowClosed< / a > ()), & a, SLOT(< a href = "qapplication.html#quit" > quit< / a > ()) );
int res = a.< a href = "qapplication.html#exec" > exec< / a > ();
return res;
}
< / pre >
< p > See also < a href = "examples.html" > Examples< / a > .
<!-- eof -->
< p > < address > < hr > < div align = center >
< table width = 100% cellspacing = 0 border = 0 > < tr >
< td > Copyright © 2007
< a href = "troll.html" > Trolltech< / a > < td align = center > < a href = "trademarks.html" > Trademarks< / a >
< td align = right > < div align = right > TQt 3.3.8< / div >
< / table > < / div > < / address > < / body >
< / html >
