simple-application-example.html
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"><!-- /home/reggie/tmp/qt-3.0-reggie-5401/qt-x11-commercial-3.0.5/examples/application/application.doc:5 --><html><head><meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"><title>A Complete Application Window</title><style type="text/css"><!--h3.fn,span.fn { margin-left: 1cm; text-indent: -1cm; }a:link { color: #004faf; text-decoration: none }a:visited { color: #672967; text-decoration: none }body { background: #ffffff; color: black; }--></style></head><body><table border="0" cellpadding="0" cellspacing="0" width="100%"><tr bgcolor="#E5E5E5"><td valign=center> <a href="index.html"><font color="#004faf">Home</font></a> | <a href="classes.html"><font color="#004faf">All Classes</font></a> | <a href="mainclasses.html"><font color="#004faf">Main Classes</font></a> | <a href="annotated.html"><font color="#004faf">Annotated</font></a> | <a href="groups.html"><font color="#004faf">Grouped Classes</font></a> | <a href="functions.html"><font color="#004faf">Functions</font></a></td><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</h1> <p> <p> This example program looks like a complete modern application. Ithas a menu bar, it has a tool bar, it has a status bar and workslike a simple text editor.<p> There is a <a href="simple-application.html">walkthrough</a> ofthis example.<p> <hr><p> Header file:<p> <pre>/****************************************************************************** $Id: qt/application.h 3.0.5 edited May 7 17:30 $**** Copyright (C) 1992-2000 Trolltech AS. All rights reserved.**** This file is part of an example program for Qt. 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>>class QTextEdit;class ApplicationWindow: public <a href="qmainwindow.html">QMainWindow</a>{ <a href="metaobjects.html#Q_OBJECT">Q_OBJECT</a>public: ApplicationWindow(); ~ApplicationWindow();protected: void closeEvent( <a href="qcloseevent.html">QCloseEvent</a>* );private slots: void newDoc(); void choose(); void load( const <a href="qstring.html">QString</a> &fileName ); void save(); void saveAs(); void print(); void about(); void aboutQt();private: <a href="qprinter.html">QPrinter</a> *printer; <a href="qtextedit.html">QTextEdit</a> *e; <a href="qstring.html">QString</a> filename;};#endif</pre><p> <hr><p> Implementation:<p> <pre>/****************************************************************************** $Id$**** Copyright (C) 1992-2002 Trolltech AS. All rights reserved.**** This file is part of an example program for Qt. This example** program may be used, distributed and modified without limitation.*******************************************************************************/#include "application.h"#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="qtextedit-h.html">qtextedit.h</a>>#include <<a href="qfile-h.html">qfile.h</a>>#include <<a href="qfiledialog-h.html">qfiledialog.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="qaccel-h.html">qaccel.h</a>>#include <<a href="qtextstream-h.html">qtextstream.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 "filesave.xpm"#include "fileopen.xpm"#include "fileprint.xpm"<a name="f448"></a>ApplicationWindow::ApplicationWindow() : <a href="qmainwindow.html">QMainWindow</a>( 0, "example application main window", WDestructiveClose ){ printer = new <a href="qprinter.html">QPrinter</a>; <a href="qpixmap.html">QPixmap</a> openIcon, saveIcon, printIcon; <a href="qtoolbar.html">QToolBar</a> * fileTools = new <a href="qtoolbar.html">QToolBar</a>( this, "file operations" );<a name="x1541"></a> fileTools-><a href="qtoolbar.html#setLabel">setLabel</a>( "File Operations" ); openIcon = QPixmap( fileopen ); QToolButton * fileOpen = new <a href="qtoolbutton.html">QToolButton</a>( openIcon, "Open File", <a href="qstring.html#QString-null">QString::null</a>, this, SLOT(choose()), fileTools, "open file" ); saveIcon = QPixmap( filesave ); QToolButton * fileSave = new <a href="qtoolbutton.html">QToolButton</a>( saveIcon, "Save File", QString::null, this, SLOT(save()), fileTools, "save file" ); printIcon = QPixmap( fileprint ); QToolButton * filePrint = new <a href="qtoolbutton.html">QToolButton</a>( printIcon, "Print File", QString::null, this, SLOT(print()), fileTools, "print file" ); (void)QWhatsThis::whatsThisButton( fileTools ); const char * fileOpenText = "<p><img source=\"fileopen\"> " "Click this button to open a <em>new file</em>. <br>" "You can also select the <b>Open</b> command " "from the <b>File</b> menu.</p>";<a name="x1542"></a> QWhatsThis::<a href="qwhatsthis.html#add">add</a>( fileOpen, fileOpenText );<a name="x1522"></a> QMimeSourceFactory::<a href="qmimesourcefactory.html#defaultFactory">defaultFactory</a>()->setPixmap( "fileopen", openIcon ); const char * fileSaveText = "<p>Click this button to save the file you " "are editing. You will be prompted for a file name.\n" "You can also select the <b>Save</b> command " "from the <b>File</b> menu.</p>"; QWhatsThis::<a href="qwhatsthis.html#add">add</a>( fileSave, fileSaveText ); const char * filePrintText = "Click this button to print the file you " "are editing.\n You can also select the Print " "command from the File menu."; QWhatsThis::<a href="qwhatsthis.html#add">add</a>( filePrint, filePrintText ); <a href="qpopupmenu.html">QPopupMenu</a> * file = new <a href="qpopupmenu.html">QPopupMenu</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 ); int id; id = file-><a href="qmenudata.html#insertItem">insertItem</a>( openIcon, "&Open...", this, SLOT(choose()), CTRL+Key_O );<a name="x1518"></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 ); 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 ); file-><a href="qmenudata.html#insertSeparator">insertSeparator</a>(); file-><a href="qmenudata.html#insertItem">insertItem</a>( "&Close", this, SLOT(<a href="qwidget.html#close">close</a>()), CTRL+Key_W );<a name="x1507"></a> file-><a href="qmenudata.html#insertItem">insertItem</a>( "&Quit", qApp, SLOT( <a href="qapplication.html#closeAllWindows">closeAllWindows</a>() ), CTRL+Key_Q ); <a href="qmainwindow.html#menuBar">menuBar</a>()->insertSeparator(); <a href="qpopupmenu.html">QPopupMenu</a> * help = new <a href="qpopupmenu.html">QPopupMenu</a>( this );⌨️ 快捷键说明
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