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439 lines
21 KiB
439 lines
21 KiB
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
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<!-- /home/espenr/tmp/qt-3.3.8-espenr-2499/qt-x11-free-3.3.8/examples/action/application.doc:5 -->
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<html>
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
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<title>A Complete Application Window with Actions</title>
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<style type="text/css"><!--
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fn { margin-left: 1cm; text-indent: -1cm; }
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a:link { color: #004faf; text-decoration: none }
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a:visited { color: #672967; text-decoration: none }
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body { background: #ffffff; color: black; }
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--></style>
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</head>
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<body>
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<table border="0" cellpadding="0" cellspacing="0" width="100%">
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<tr bgcolor="#E5E5E5">
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<td valign=center>
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<a href="index.html">
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<font color="#004faf">Home</font></a>
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| <a href="classes.html">
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<font color="#004faf">All Classes</font></a>
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| <a href="mainclasses.html">
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<font color="#004faf">Main Classes</font></a>
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| <a href="annotated.html">
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<font color="#004faf">Annotated</font></a>
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| <a href="groups.html">
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<font color="#004faf">Grouped Classes</font></a>
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| <a href="functions.html">
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<font color="#004faf">Functions</font></a>
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</td>
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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>A Complete Application Window with Actions</h1>
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<p>
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<p> The <a href="ntqaction.html">TQAction</a> class provides a way of associating user input from different
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user interface elements with abstract high level actions. This approach makes
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it easy to customize applications for different types of users.
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<p> This example program is just like the
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<a href="simple-application-example.html">application example</a>,
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but uses TQAction to build the menu and the toolbar.
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<p> <hr>
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<p> Header file:
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<p> <pre>/****************************************************************************
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** $Id: qt/application.h 3.3.8 edited Jan 11 14:36 $
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**
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** Copyright (C) 1992-2007 Trolltech ASA. All rights reserved.
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**
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** This file is part of an example program for TQt. This example
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** program may be used, distributed and modified without limitation.
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**
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*****************************************************************************/
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#ifndef APPLICATION_H
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#define APPLICATION_H
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#include <<a href="qmainwindow-h.html">ntqmainwindow.h</a>>
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class TQTextEdit;
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class ApplicationWindow: public <a href="ntqmainwindow.html">TQMainWindow</a>
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{
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<a href="metaobjects.html#TQ_OBJECT">TQ_OBJECT</a>
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public:
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ApplicationWindow();
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~ApplicationWindow();
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protected:
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void closeEvent( <a href="qcloseevent.html">TQCloseEvent</a>* );
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private slots:
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void newDoc();
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void choose();
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void load( const <a href="tqstring.html">TQString</a> &fileName );
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void save();
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void saveAs();
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void print();
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void about();
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void aboutTQt();
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private:
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<a href="ntqprinter.html">TQPrinter</a> *printer;
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<a href="tqtextedit.html">TQTextEdit</a> *e;
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<a href="tqstring.html">TQString</a> filename;
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};
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#endif
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</pre>
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<p> <hr>
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<p> Implementation:
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<p> <pre>/****************************************************************************
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** $Id: qt/application.cpp 3.3.8 edited Jan 11 14:36 $
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**
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** Copyright (C) 1992-2007 Trolltech ASA. All rights reserved.
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**
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** This file is part of an example program for TQt. This example
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** program may be used, distributed and modified without limitation.
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**
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*****************************************************************************/
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#include "application.h"
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#include <<a href="tqimage-h.html">tqimage.h</a>>
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#include <<a href="qpixmap-h.html">ntqpixmap.h</a>>
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#include <<a href="qtoolbar-h.html">ntqtoolbar.h</a>>
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#include <<a href="qtoolbutton-h.html">ntqtoolbutton.h</a>>
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#include <<a href="qpopupmenu-h.html">ntqpopupmenu.h</a>>
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#include <<a href="qmenubar-h.html">ntqmenubar.h</a>>
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#include <<a href="tqtextedit-h.html">tqtextedit.h</a>>
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#include <<a href="qfile-h.html">ntqfile.h</a>>
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#include <<a href="qfiledialog-h.html">ntqfiledialog.h</a>>
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#include <<a href="qstatusbar-h.html">ntqstatusbar.h</a>>
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#include <<a href="qmessagebox-h.html">ntqmessagebox.h</a>>
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#include <<a href="qprinter-h.html">ntqprinter.h</a>>
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#include <<a href="qapplication-h.html">ntqapplication.h</a>>
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#include <<a href="qaccel-h.html">ntqaccel.h</a>>
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#include <<a href="tqtextstream-h.html">tqtextstream.h</a>>
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#include <<a href="qpainter-h.html">ntqpainter.h</a>>
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#include <<a href="qpaintdevicemetrics-h.html">ntqpaintdevicemetrics.h</a>>
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#include <<a href="qwhatsthis-h.html">ntqwhatsthis.h</a>>
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#include <<a href="qaction-h.html">ntqaction.h</a>>
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#include <<a href="qsimplerichtext-h.html">ntqsimplerichtext.h</a>>
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#include "filesave.xpm"
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#include "fileopen.xpm"
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#include "fileprint.xpm"
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<a name="f375"></a>ApplicationWindow::ApplicationWindow()
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: <a href="ntqmainwindow.html">TQMainWindow</a>( 0, "example application main window", WDestructiveClose )
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{
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printer = new <a href="ntqprinter.html">TQPrinter</a>( TQPrinter::HighResolution );
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<a href="ntqaction.html">TQAction</a> * fileNewAction;
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<a href="ntqaction.html">TQAction</a> * fileOpenAction;
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<a href="ntqaction.html">TQAction</a> * fileSaveAction, * fileSaveAsAction, * filePrintAction;
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<a href="ntqaction.html">TQAction</a> * fileCloseAction, * fileQuitAction;
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fileNewAction = new <a href="ntqaction.html">TQAction</a>( "&New", CTRL+Key_N, this, "new" );
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<a name="x1123"></a> <a href="tqobject.html#connect">connect</a>( fileNewAction, TQ_SIGNAL( <a href="ntqaction.html#activated">activated</a>() ) , this,
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TQ_SLOT( newDoc() ) );
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fileOpenAction = new <a href="ntqaction.html">TQAction</a>( TQPixmap( fileopen ), "&Open...",
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CTRL+Key_O, this, "open" );
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<a href="tqobject.html#connect">connect</a>( fileOpenAction, TQ_SIGNAL( <a href="ntqaction.html#activated">activated</a>() ) , this, TQ_SLOT( choose() ) );
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const char * fileOpenText = "<p><img source=\"fileopen\"> "
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"Click this button to open a <em>new file</em>. <br>"
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"You can also select the <b>Open</b> command "
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"from the <b>File</b> menu.</p>";
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<a name="x1140"></a> TQMimeSourceFactory::<a href="qmimesourcefactory.html#defaultFactory">defaultFactory</a>()->setPixmap( "document-open",
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<a name="x1125"></a> fileOpenAction-><a href="ntqaction.html#iconSet">iconSet</a>().pixmap() );
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<a name="x1126"></a> fileOpenAction-><a href="ntqaction.html#setWhatsThis">setWhatsThis</a>( fileOpenText );
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fileSaveAction = new <a href="ntqaction.html">TQAction</a>( TQPixmap( filesave ),
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"&Save", CTRL+Key_S, this, "save" );
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<a href="tqobject.html#connect">connect</a>( fileSaveAction, TQ_SIGNAL( <a href="ntqaction.html#activated">activated</a>() ) , this, TQ_SLOT( save() ) );
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const char * fileSaveText = "<p>Click this button to save the file you "
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"are editing. You will be prompted for a file name.\n"
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"You can also select the <b>Save</b> command "
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"from the <b>File</b> menu.</p>";
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fileSaveAction-><a href="ntqaction.html#setWhatsThis">setWhatsThis</a>( fileSaveText );
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fileSaveAsAction = new <a href="ntqaction.html">TQAction</a>( "Save File As", "Save &As...", 0, this,
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"save as" );
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<a href="tqobject.html#connect">connect</a>( fileSaveAsAction, TQ_SIGNAL( <a href="ntqaction.html#activated">activated</a>() ) , this,
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TQ_SLOT( saveAs() ) );
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fileSaveAsAction-><a href="ntqaction.html#setWhatsThis">setWhatsThis</a>( fileSaveText );
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filePrintAction = new <a href="ntqaction.html">TQAction</a>( "Print File", TQPixmap( fileprint ),
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"&Print...", CTRL+Key_P, this, "print" );
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<a href="tqobject.html#connect">connect</a>( filePrintAction, TQ_SIGNAL( <a href="ntqaction.html#activated">activated</a>() ) , this,
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TQ_SLOT( print() ) );
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const char * filePrintText = "Click this button to print the file you "
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"are editing.\n You can also select the Print "
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"command from the File menu.";
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filePrintAction-><a href="ntqaction.html#setWhatsThis">setWhatsThis</a>( filePrintText );
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fileCloseAction = new <a href="ntqaction.html">TQAction</a>( "Close", "&Close", CTRL+Key_W, this,
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"close" );
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<a href="tqobject.html#connect">connect</a>( fileCloseAction, TQ_SIGNAL( <a href="ntqaction.html#activated">activated</a>() ) , this,
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TQ_SLOT( <a href="tqwidget.html#close">close</a>() ) );
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fileQuitAction = new <a href="ntqaction.html">TQAction</a>( "Quit", "&Quit", CTRL+Key_Q, this,
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"quit" );
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<a name="x1127"></a> <a href="tqobject.html#connect">connect</a>( fileQuitAction, TQ_SIGNAL( <a href="ntqaction.html#activated">activated</a>() ) , tqApp,
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TQ_SLOT( <a href="ntqapplication.html#closeAllWindows">closeAllWindows</a>() ) );
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// populate a tool bar with some actions
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<a href="ntqtoolbar.html">TQToolBar</a> * fileTools = new <a href="ntqtoolbar.html">TQToolBar</a>( this, "file operations" );
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<a name="x1172"></a> fileTools-><a href="ntqtoolbar.html#setLabel">setLabel</a>( "File Operations" );
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<a name="x1124"></a> fileOpenAction-><a href="ntqaction.html#addTo">addTo</a>( fileTools );
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fileSaveAction-><a href="ntqaction.html#addTo">addTo</a>( fileTools );
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filePrintAction-><a href="ntqaction.html#addTo">addTo</a>( fileTools );
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(void)TQWhatsThis::whatsThisButton( fileTools );
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// populate a menu with all actions
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<a href="ntqpopupmenu.html">TQPopupMenu</a> * file = new <a href="ntqpopupmenu.html">TQPopupMenu</a>( this );
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<a href="ntqmainwindow.html#menuBar">menuBar</a>()->insertItem( "&File", file );
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fileNewAction-><a href="ntqaction.html#addTo">addTo</a>( file );
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fileOpenAction-><a href="ntqaction.html#addTo">addTo</a>( file );
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fileSaveAction-><a href="ntqaction.html#addTo">addTo</a>( file );
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fileSaveAsAction-><a href="ntqaction.html#addTo">addTo</a>( file );
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file-><a href="ntqmenudata.html#insertSeparator">insertSeparator</a>();
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filePrintAction-><a href="ntqaction.html#addTo">addTo</a>( file );
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file-><a href="ntqmenudata.html#insertSeparator">insertSeparator</a>();
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fileCloseAction-><a href="ntqaction.html#addTo">addTo</a>( file );
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fileQuitAction-><a href="ntqaction.html#addTo">addTo</a>( file );
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<a href="ntqmainwindow.html#menuBar">menuBar</a>()->insertSeparator();
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// add a help menu
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<a href="ntqpopupmenu.html">TQPopupMenu</a> * help = new <a href="ntqpopupmenu.html">TQPopupMenu</a>( this );
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<a href="ntqmainwindow.html#menuBar">menuBar</a>()->insertItem( "&Help", help );
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help-><a href="ntqmenudata.html#insertItem">insertItem</a>( "&About", this, TQ_SLOT(about()), Key_F1 );
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help-><a href="ntqmenudata.html#insertItem">insertItem</a>( "About &TQt", this, TQ_SLOT(aboutTQt()) );
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help-><a href="ntqmenudata.html#insertSeparator">insertSeparator</a>();
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help-><a href="ntqmenudata.html#insertItem">insertItem</a>( "What's &This", this, TQ_SLOT(<a href="ntqmainwindow.html#whatsThis">whatsThis</a>()),
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SHIFT+Key_F1 );
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// create and define the central widget
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e = new <a href="tqtextedit.html">TQTextEdit</a>( this, "editor" );
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e-><a href="tqwidget.html#setFocus">setFocus</a>();
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<a href="ntqmainwindow.html#setCentralWidget">setCentralWidget</a>( e );
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<a href="ntqmainwindow.html#statusBar">statusBar</a>()->message( "Ready", 2000 );
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<a href="tqwidget.html#resize">resize</a>( 450, 600 );
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}
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ApplicationWindow::~ApplicationWindow()
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{
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delete printer;
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}
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void <a name="f376"></a>ApplicationWindow::newDoc()
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{
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ApplicationWindow *ed = new ApplicationWindow;
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ed-><a href="tqwidget.html#show">show</a>();
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}
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void <a name="f377"></a>ApplicationWindow::choose()
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{
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<a name="x1132"></a> <a href="tqstring.html">TQString</a> fn = TQFileDialog::<a href="ntqfiledialog.html#getOpenFileName">getOpenFileName</a>( <a href="tqstring.html#TQString-null">TQString::null</a>, TQString::null,
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this);
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if ( !fn.<a href="tqstring.html#isEmpty">isEmpty</a>() )
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load( fn );
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else
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<a href="ntqmainwindow.html#statusBar">statusBar</a>()->message( "Loading aborted", 2000 );
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}
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void <a name="f378"></a>ApplicationWindow::load( const <a href="tqstring.html">TQString</a> &fileName )
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{
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<a href="ntqfile.html">TQFile</a> f( fileName );
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if ( !f.<a href="ntqfile.html#open">open</a>( <a href="ntqfile.html#open">IO_ReadOnly</a> ) )
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return;
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<a href="tqtextstream.html">TQTextStream</a> ts( &f );
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<a name="x1171"></a><a name="x1168"></a> e-><a href="tqtextedit.html#setText">setText</a>( ts.<a href="tqtextstream.html#read">read</a>() );
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<a name="x1167"></a> e-><a href="tqtextedit.html#setModified">setModified</a>( FALSE );
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<a href="tqwidget.html#setCaption">setCaption</a>( fileName );
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<a href="ntqmainwindow.html#statusBar">statusBar</a>()->message( "Loaded document " + fileName, 2000 );
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}
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void <a name="f379"></a>ApplicationWindow::save()
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{
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if ( filename.isEmpty() ) {
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saveAs();
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return;
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}
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<a name="x1170"></a> <a href="tqstring.html">TQString</a> text = e-><a href="tqtextedit.html#text">text</a>();
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<a href="ntqfile.html">TQFile</a> f( filename );
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if ( !f.<a href="ntqfile.html#open">open</a>( <a href="ntqfile.html#open">IO_WriteOnly</a> ) ) {
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<a href="ntqmainwindow.html#statusBar">statusBar</a>()->message( TQString("Could not write to %1").arg(filename),
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2000 );
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return;
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}
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<a href="tqtextstream.html">TQTextStream</a> t( &f );
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t << text;
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f.<a href="ntqfile.html#close">close</a>();
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e-><a href="tqtextedit.html#setModified">setModified</a>( FALSE );
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<a href="tqwidget.html#setCaption">setCaption</a>( filename );
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<a href="ntqmainwindow.html#statusBar">statusBar</a>()->message( TQString( "File %1 saved" ).arg( filename ), 2000 );
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}
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void <a name="f380"></a>ApplicationWindow::saveAs()
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{
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<a name="x1133"></a> <a href="tqstring.html">TQString</a> fn = TQFileDialog::<a href="ntqfiledialog.html#getSaveFileName">getSaveFileName</a>( TQString::null, TQString::null,
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this );
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if ( !fn.<a href="tqstring.html#isEmpty">isEmpty</a>() ) {
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filename = fn;
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save();
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} else {
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<a href="ntqmainwindow.html#statusBar">statusBar</a>()->message( "Saving aborted", 2000 );
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}
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}
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void <a name="f381"></a>ApplicationWindow::print()
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{
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<a name="x1150"></a> printer-><a href="ntqprinter.html#setFullPage">setFullPage</a>( TRUE );
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<a name="x1151"></a> if ( printer-><a href="ntqprinter.html#setup">setup</a>(this) ) { // printer dialog
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<a href="ntqmainwindow.html#statusBar">statusBar</a>()->message( "Printing..." );
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<a href="ntqpainter.html">TQPainter</a> p;
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if( !p.<a href="ntqpainter.html#begin">begin</a>( printer ) ) { // paint on printer
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<a href="ntqmainwindow.html#statusBar">statusBar</a>()->message( "Printing aborted", 2000 );
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return;
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}
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<a name="x1145"></a> <a href="ntqpaintdevicemetrics.html">TQPaintDeviceMetrics</a> metrics( p.<a href="ntqpainter.html#device">device</a>() );
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<a name="x1142"></a> int dpiy = metrics.<a href="ntqpaintdevicemetrics.html#logicalDpiY">logicalDpiY</a>();
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int margin = (int) ( (2/2.54)*dpiy ); // 2 cm margins
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<a name="x1143"></a><a name="x1141"></a> <a href="ntqrect.html">TQRect</a> view( margin, margin, metrics.<a href="ntqpaintdevicemetrics.html#width">width</a>() - 2*margin, metrics.<a href="ntqpaintdevicemetrics.html#height">height</a>() - 2*margin );
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<a name="x1163"></a> <a href="ntqsimplerichtext.html">TQSimpleRichText</a> richText( TQStyleSheet::<a href="tqstylesheet.html#convertFromPlainText">convertFromPlainText</a>(e-><a href="tqtextedit.html#text">text</a>()),
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TQFont(),
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<a name="x1164"></a> e-><a href="tqtextedit.html#context">context</a>(),
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<a name="x1169"></a> e-><a href="tqtextedit.html#styleSheet">styleSheet</a>(),
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<a name="x1166"></a> e-><a href="tqtextedit.html#mimeSourceFactory">mimeSourceFactory</a>(),
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view.<a href="ntqrect.html#height">height</a>() );
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<a name="x1160"></a> richText.<a href="ntqsimplerichtext.html#setWidth">setWidth</a>( &p, view.<a href="ntqrect.html#width">width</a>() );
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int page = 1;
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do {
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<a name="x1158"></a> richText.<a href="ntqsimplerichtext.html#draw">draw</a>( &p, margin, margin, view, colorGroup() );
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<a name="x1154"></a> view.<a href="ntqrect.html#moveBy">moveBy</a>( 0, view.<a href="ntqrect.html#height">height</a>() );
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<a name="x1148"></a> p.<a href="ntqpainter.html#translate">translate</a>( 0 , -view.<a href="ntqrect.html#height">height</a>() );
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<a name="x1155"></a><a name="x1147"></a> p.<a href="ntqpainter.html#drawText">drawText</a>( view.<a href="ntqrect.html#right">right</a>() - p.<a href="ntqpainter.html#fontMetrics">fontMetrics</a>().width( TQString::<a href="tqstring.html#number">number</a>( page ) ),
|
|
<a name="x1152"></a> view.<a href="ntqrect.html#bottom">bottom</a>() + p.<a href="ntqpainter.html#fontMetrics">fontMetrics</a>().ascent() + 5, TQString::number( page ) );
|
|
<a name="x1159"></a> if ( view.<a href="ntqrect.html#top">top</a>() - margin >= richText.<a href="ntqsimplerichtext.html#height">height</a>() )
|
|
break;
|
|
<a name="x1149"></a> printer-><a href="ntqprinter.html#newPage">newPage</a>();
|
|
page++;
|
|
} while (TRUE);
|
|
|
|
<a href="ntqmainwindow.html#statusBar">statusBar</a>()->message( "Printing completed", 2000 );
|
|
} else {
|
|
<a href="ntqmainwindow.html#statusBar">statusBar</a>()->message( "Printing aborted", 2000 );
|
|
}
|
|
}
|
|
|
|
<a name="x1173"></a>void ApplicationWindow::<a href="tqwidget.html#closeEvent">closeEvent</a>( <a href="qcloseevent.html">TQCloseEvent</a>* ce )
|
|
{
|
|
<a name="x1165"></a> if ( !e-><a href="tqtextedit.html#isModified">isModified</a>() ) {
|
|
<a name="x1128"></a> ce-><a href="qcloseevent.html#accept">accept</a>();
|
|
return;
|
|
}
|
|
|
|
<a name="x1139"></a> switch( TQMessageBox::<a href="ntqmessagebox.html#information">information</a>( this, "TQt Application Example",
|
|
"The document has been changed since "
|
|
"the last save.",
|
|
"Save Now", "Cancel", "Leave Anyway",
|
|
0, 1 ) ) {
|
|
case 0:
|
|
save();
|
|
ce-><a href="qcloseevent.html#accept">accept</a>();
|
|
break;
|
|
case 1:
|
|
default: // just for sanity
|
|
<a name="x1129"></a> ce-><a href="qcloseevent.html#ignore">ignore</a>();
|
|
break;
|
|
case 2:
|
|
ce-><a href="qcloseevent.html#accept">accept</a>();
|
|
break;
|
|
}
|
|
}
|
|
|
|
|
|
void <a name="f382"></a>ApplicationWindow::about()
|
|
{
|
|
<a name="x1137"></a> TQMessageBox::<a href="ntqmessagebox.html#about">about</a>( this, "TQt Application Example",
|
|
"This example demonstrates simple use of "
|
|
"TQMainWindow,\nTQMenuBar and TQToolBar.");
|
|
}
|
|
|
|
|
|
void <a name="f383"></a>ApplicationWindow::aboutTQt()
|
|
{
|
|
<a name="x1138"></a> TQMessageBox::<a href="ntqmessagebox.html#aboutTQt">aboutTQt</a>( this, "TQt Application Example" );
|
|
}
|
|
</pre>
|
|
|
|
<p> <hr>
|
|
<p> Main:
|
|
<p> <pre>/****************************************************************************
|
|
** $Id: qt/main.cpp 3.3.8 edited Jan 11 14:36 $
|
|
**
|
|
** 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">ntqapplication.h</a>>
|
|
#include "application.h"
|
|
|
|
int main( int argc, char ** argv ) {
|
|
<a href="ntqapplication.html">TQApplication</a> a( argc, argv );
|
|
ApplicationWindow * mw = new ApplicationWindow();
|
|
mw-><a href="tqwidget.html#setCaption">setCaption</a>( "Document 1" );
|
|
<a name="x1178"></a> mw-><a href="tqwidget.html#show">show</a>();
|
|
<a name="x1179"></a> a.<a href="tqobject.html#connect">connect</a>( &a, TQ_SIGNAL(<a href="ntqapplication.html#lastWindowClosed">lastWindowClosed</a>()), &a, TQ_SLOT(<a href="ntqapplication.html#quit">quit</a>()) );
|
|
return a.<a href="ntqapplication.html#exec">exec</a>();
|
|
}
|
|
</pre>
|
|
|
|
<p>See also <a href="qaction-examples.html">TQAction 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>
|