i18n-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/i18n/i18n.doc:4 --><html><head><meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"><title>Internationalization</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>Internationalization</h1> <p> This example shows how to internationalize applications. Start it with<pre># i18n de</pre><p> to get a german version and with<pre># i18n en</pre><p> to get the english version.<p> Refer also to <a href="i18n.html">the internationalization documentation</a>.<p> <hr><p> Header file:<p> <pre>/****************************************************************************** $Id: qt/mywidget.h 3.0.5 edited Oct 12 2001 $**** 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 MYWIDGET_H#define MYWIDGET_H#include <<a href="qmainwindow-h.html">qmainwindow.h</a>>#include <<a href="qstring-h.html">qstring.h</a>>class MyWidget : public <a href="qmainwindow.html">QMainWindow</a>{ <a href="metaobjects.html#Q_OBJECT">Q_OBJECT</a>public: MyWidget( <a href="qwidget.html">QWidget</a>* parent=0, const char* name = 0 );signals: void closed();protected: void closeEvent(QCloseEvent*);private: static void initChoices(QWidget* parent);};#endif</pre><p> <hr><p> Implementation:<p> <pre>/****************************************************************************** $Id: qt/mywidget.cpp 3.0.5 edited Oct 12 2001 $**** 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.*******************************************************************************/#include <<a href="qbuttongroup-h.html">qbuttongroup.h</a>>#include <<a href="qradiobutton-h.html">qradiobutton.h</a>>#include <<a href="qlabel-h.html">qlabel.h</a>>#include <<a href="qlistbox-h.html">qlistbox.h</a>>#include <<a href="qcombobox-h.html">qcombobox.h</a>>#include <<a href="qlabel-h.html">qlabel.h</a>>#include <<a href="qhbox-h.html">qhbox.h</a>>#include <<a href="qvbox-h.html">qvbox.h</a>>#include <<a href="qaccel-h.html">qaccel.h</a>>#include <<a href="qpopupmenu-h.html">qpopupmenu.h</a>>#include <<a href="qmenubar-h.html">qmenubar.h</a>>#include <<a href="qstatusbar-h.html">qstatusbar.h</a>>#include <<a href="qapplication-h.html">qapplication.h</a>>#include "mywidget.h"<a name="f524"></a>MyWidget::MyWidget( <a href="qwidget.html">QWidget</a>* parent, const char* name ) : <a href="qmainwindow.html">QMainWindow</a>( parent, name ){ <a href="qvbox.html">QVBox</a>* central = new <a href="qvbox.html">QVBox</a>(this);<a name="x1912"></a> central-><a href="qframe.html#setMargin">setMargin</a>( 5 );<a name="x1913"></a> central-><a href="qhbox.html#setSpacing">setSpacing</a>( 5 ); <a href="qmainwindow.html#setCentralWidget">setCentralWidget</a>(central); <a href="qpopupmenu.html">QPopupMenu</a>* file = new <a href="qpopupmenu.html">QPopupMenu</a>(this); file-><a href="qmenudata.html#insertItem">insertItem</a>( <a href="qobject.html#tr">tr</a>("E&xit"), qApp, SLOT(<a href="qapplication.html#quit">quit</a>()),<a name="x1910"></a> QAccel::<a href="qaccel.html#stringToKey">stringToKey</a>(<a href="qobject.html#tr">tr</a>("Ctrl+Q")) ); <a href="qmainwindow.html#menuBar">menuBar</a>()->insertItem( <a href="qobject.html#tr">tr</a>("&File"), file ); <a href="qwidget.html#setCaption">setCaption</a>( <a href="qobject.html#tr">tr</a>( "Internationalization Example" ) ); <a href="qstring.html">QString</a> l; <a href="qmainwindow.html#statusBar">statusBar</a>()->message( <a href="qobject.html#tr">tr</a>("Language: English") ); ( void )new <a href="qlabel.html">QLabel</a>( <a href="qobject.html#tr">tr</a>( "The Main Window" ), central ); <a href="qbuttongroup.html">QButtonGroup</a>* gbox = new <a href="qbuttongroup.html">QButtonGroup</a>( 1, QGroupBox::Horizontal, <a href="qobject.html#tr">tr</a>( "View" ), central ); (void)new <a href="qradiobutton.html">QRadioButton</a>( <a href="qobject.html#tr">tr</a>( "Perspective" ), gbox ); (void)new <a href="qradiobutton.html">QRadioButton</a>( <a href="qobject.html#tr">tr</a>( "Isometric" ), gbox ); (void)new <a href="qradiobutton.html">QRadioButton</a>( <a href="qobject.html#tr">tr</a>( "Oblique" ), gbox ); initChoices(central);}static const char* choices[] = { QT_TRANSLATE_NOOP( "MyWidget", "First" ), QT_TRANSLATE_NOOP( "MyWidget", "Second" ), QT_TRANSLATE_NOOP( "MyWidget", "Third" ), 0};void <a name="f525"></a>MyWidget::initChoices(QWidget* parent){ <a href="qlistbox.html">QListBox</a>* lb = new <a href="qlistbox.html">QListBox</a>( parent ); for ( int i = 0; choices[i]; i++ )<a name="x1914"></a> lb-><a href="qlistbox.html#insertItem">insertItem</a>( <a href="qobject.html#tr">tr</a>( choices[i] ) );}<a name="x1916"></a>void MyWidget::<a href="qwidget.html#closeEvent">closeEvent</a>(QCloseEvent* e){ QWidget::<a href="qwidget.html#closeEvent">closeEvent</a>(e); emit closed();}</pre><p> <hr><p> Main:<p> <pre>/****************************************************************************** $Id: qt/main.cpp 3.0.5 edited Dec 6 2001 $**** 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.*******************************************************************************/#include <<a href="qapplication-h.html">qapplication.h</a>>#include <<a href="qtranslator-h.html">qtranslator.h</a>>#include <<a href="qfileinfo-h.html">qfileinfo.h</a>>#include <<a href="qmessagebox-h.html">qmessagebox.h</a>>#include <<a href="qcheckbox-h.html">qcheckbox.h</a>>#include <<a href="qvbox-h.html">qvbox.h</a>>#include <<a href="qlayout-h.html">qlayout.h</a>>#include <<a href="qbuttongroup-h.html">qbuttongroup.h</a>>#include <<a href="qpushbutton-h.html">qpushbutton.h</a>>#include <<a href="qsignalmapper-h.html">qsignalmapper.h</a>>#include <<a href="qtextcodec-h.html">qtextcodec.h</a>>#include <stdlib.h>#if defined(Q_OS_UNIX)#include <unistd.h>#endif#include "mywidget.h"//#define USE_I18N_FONTclass QVDialog : public <a href="qdialog.html">QDialog</a> {public: QVDialog(QWidget *parent=0, const char *name=0, bool modal=FALSE, WFlags f=0) : <a href="qdialog.html">QDialog</a>(parent,name,modal,f) { <a href="qvboxlayout.html">QVBoxLayout</a>* vb = new <a href="qvboxlayout.html">QVBoxLayout</a>(this,8);<a name="x1927"></a> vb-><a href="qlayout.html#setAutoAdd">setAutoAdd</a>(TRUE); hb = 0; sm = new <a href="qsignalmapper.html">QSignalMapper</a>(this);<a name="x1932"></a> connect(sm,SIGNAL(<a href="qsignalmapper.html#mapped">mapped</a>(int)),this,SLOT(done(int))); } void addButtons( const <a href="qstring.html">QString</a>& cancel=QString::null, const <a href="qstring.html">QString</a>& ok=QString::null, const <a href="qstring.html">QString</a>& mid1=QString::null, const <a href="qstring.html">QString</a>& mid2=QString::null, const <a href="qstring.html">QString</a>& mid3=QString::null) {<a name="x1934"></a> addButton(ok.<a href="qstring.html#isNull">isNull</a>() ? tr("OK") : ok, 1); if ( !mid1.<a href="qstring.html#isNull">isNull</a>() ) addButton(mid1,2); if ( !mid2.<a href="qstring.html#isNull">isNull</a>() ) addButton(mid2,3); if ( !mid3.<a href="qstring.html#isNull">isNull</a>() ) addButton(mid3,4); addButton(cancel.<a href="qstring.html#isNull">isNull</a>() ? tr("Cancel") : cancel, 0); } void addButton( const <a href="qstring.html">QString</a>& text, int result ) { if ( !hb ) hb = new <a href="qhbox.html">QHBox</a>(this); <a href="qpushbutton.html">QPushButton</a> *c = new <a href="qpushbutton.html">QPushButton</a>(text, hb);<a name="x1933"></a> sm-><a href="qsignalmapper.html#setMapping">setMapping</a>(c,result);<a name="x1931"></a> connect(c,SIGNAL(<a href="qbutton.html#clicked">clicked</a>()),sm,SLOT(<a href="qsignalmapper.html#map">map</a>())); }private: <a href="qsignalmapper.html">QSignalMapper</a> *sm; <a href="qhbox.html">QHBox</a> *hb;};MyWidget* showLang(QString lang){ static QTranslator *translator = 0;<a name="x1923"></a> qApp-><a href="qapplication.html#setPalette">setPalette</a>(QPalette(QColor(220-rand()%64,220-rand()%64,220-rand()%64))); lang = "mywidget_" + lang + ".qm"; <a href="qfileinfo.html">QFileInfo</a> fi( lang );<a name="x1926"></a> if ( !fi.<a href="qfileinfo.html#exists">exists</a>() ) {<a name="x1929"></a> QMessageBox::<a href="qmessagebox.html#warning">warning</a>( 0, "File error", QString("Cannot find translation for language: "+lang+ "\n(try eg. 'de', 'ko' or 'no')") ); return 0; } if ( translator ) {<a name="x1921"></a> qApp-><a href="qapplication.html#removeTranslator">removeTranslator</a>( translator ); delete translator; } translator = new <a href="qtranslator.html">QTranslator</a>( 0 );<a name="x1936"></a> translator-><a href="qtranslator.html#load">load</a>( lang, "." );<a name="x1919"></a> qApp-><a href="qapplication.html#installTranslator">installTranslator</a>( translator ); MyWidget *m = new MyWidget;<a name="x1937"></a> m-><a href="qwidget.html#setCaption">setCaption</a>("Qt Example - i18n - " + m-><a href="qwidget.html#caption">caption</a>() ); return m;}int main( int argc, char** argv ){ <a href="qapplication.html">QApplication</a> app( argc, argv ); const char* qm[]= { "cs", "de", "el", "en", "eo", "fr", "it", "jp", "ko", "no", "ru", "zh", 0 };#if defined(Q_OS_UNIX) srand( getpid() << 2 );#endif <a href="qstring.html">QString</a> lang; if ( argc == 2 ) lang = argv[1]; if ( argc != 2 || lang == "all" ) { QVDialog dlg(0,0,TRUE); QCheckBox* qmb[sizeof(qm)/sizeof(qm[0])]; int r; if ( lang == "all" ) { r = 2; } else { <a href="qbuttongroup.html">QButtonGroup</a> *bg = new <a href="qbuttongroup.html">QButtonGroup</a>(4,Qt::Vertical,"Choose Locales",&dlg);<a name="x1935"></a> <a href="qstring.html">QString</a> loc = QTextCodec::<a href="qtextcodec.html#locale">locale</a>(); for ( int i=0; qm[i]; i++ ) { qmb[i] = new <a href="qcheckbox.html">QCheckBox</a>((const char*)qm[i],bg); qmb[i]->setChecked( loc == qm[i] ); } dlg.addButtons("Cancel","OK","All");<a name="x1925"></a> r = dlg.<a href="qdialog.html#exec">exec</a>(); } if ( r ) {<a name="x1917"></a> bool tight = qApp-><a href="qapplication.html#desktop">desktop</a>()->screen()->width() < 1024; int x=5; int y=25; for ( int i=0; qm[i]; i++ ) { if ( r == 2 || qmb[i]->isChecked() ) { MyWidget* w = showLang((const char*)qm[i]); if( w == 0 ) exit( 0 ); QObject::<a href="qobject.html#connect">connect</a>(w, SIGNAL(closed()), qApp, SLOT(<a href="qapplication.html#quit">quit</a>()));<a name="x1939"></a> w-><a href="qwidget.html#setGeometry">setGeometry</a>(x,y,197,356); w-><a href="qwidget.html#show">show</a>(); if ( tight ) { x += 8; y += 8; } else { x += 205; if ( x > 1000 ) { x = 5; y += 384; } } } } } else { exit( 0 ); } } else { <a href="qstring.html">QString</a> lang = argv[1]; <a href="qwidget.html">QWidget</a>* m = showLang(lang); app.<a href="qapplication.html#setMainWidget">setMainWidget</a>( m ); m-><a href="qwidget.html#setCaption">setCaption</a>("Qt Example - i18n"); m-><a href="qwidget.html#show">show</a>(); }#ifdef USE_I18N_FONT memorymanager->savePrerenderedFont(font.handle(),FALSE);#endif // While we run "all", kill them all return app.<a href="qapplication.html#exec">exec</a>();}</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 © 2002 <a href="http://www.trolltech.com">Trolltech</a><td><a href="http://www.trolltech.com/trademarks.html">Trademarks</a><td align=right><div align=right>Qt version 3.0.5</div></table></div></address></body></html>⌨️ 快捷键说明
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