Internationalization
This example shows how to internationalize applications. Start it with
# i18n de
to get a german version and with
# i18n en
to get the english version.
Also see the internationalization documentation.
Header file: /****************************************************************************
** $Id: qt/examples/i18n/mywidget.h 2.2.1 edited 2000-08-31 $
**
** 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 <qmainwindow.h>
#include <qstring.h>
class MyWidget : public QMainWindow
{
Q_OBJECT
public:
MyWidget( QWidget* parent=0, const char* name = 0 );
signals:
void closed();
protected:
void closeEvent(QCloseEvent*);
private:
static void initChoices(QWidget* parent);
};
#endif
Implementation: /****************************************************************************
** $Id: qt/examples/i18n/mywidget.cpp 2.2.1 edited 2000-08-31 $
**
** 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 <qbuttongroup.h>
#include <qradiobutton.h>
#include <qlabel.h>
#include <qlistbox.h>
#include <qcombobox.h>
#include <qlabel.h>
#include <qhbox.h>
#include <qvbox.h>
#include <qaccel.h>
#include <qpopupmenu.h>
#include <qmenubar.h>
#include <qstatusbar.h>
#include <qapplication.h>
#include "mywidget.h"
MyWidget::MyWidget( QWidget* parent, const char* name )
: QMainWindow( parent, name )
{
QVBox* central = new QVBox(this);
central->setMargin( 5 );
central->setSpacing( 5 );
setCentralWidget(central);
QPopupMenu* file = new QPopupMenu(this);
file->insertItem( tr("E&xit"), qApp, SLOT(quit()),
QAccel::stringToKey(tr("Ctrl+Q")) );
menuBar()->insertItem( tr("&File"), file );
setCaption( tr( "Internationalization Example" ) );
QString l;
statusBar()->message( tr("Language: English") );
( void )new QLabel( tr( "The Main Window" ), central );
QButtonGroup* gbox = new QButtonGroup( 1, QGroupBox::Horizontal,
tr( "View" ), central );
(void)new QRadioButton( tr( "Perspective" ), gbox );
(void)new QRadioButton( tr( "Isometric" ), gbox );
(void)new QRadioButton( tr( "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 MyWidget::initChoices(QWidget* parent)
{
QListBox* lb = new QListBox( parent );
for ( int i = 0; choices[i]; i++ )
lb->insertItem( tr( choices[i] ) );
}
void MyWidget::closeEvent(QCloseEvent* e)
{
QWidget::closeEvent(e);
emit closed();
}
Main:
/****************************************************************************
** $Id: qt/examples/i18n/main.cpp 2.2.1 edited 2000-10-03 $
**
** 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 <qapplication.h>
#include <qtranslator.h>
#include <qfileinfo.h>
#include <qmessagebox.h>
#include <qcheckbox.h>
#include <qvbox.h>
#include <qlayout.h>
#include <qbuttongroup.h>
#include <qpushbutton.h>
#include <qsignalmapper.h>
#include <stdlib.h>
#if defined(_OS_UNIX_)
#include <unistd.h>
#endif
#include "mywidget.h"
//#define USE_I18N_FONT
class QVDialog : public QDialog {
public:
QVDialog(QWidget *parent=0, const char *name=0, bool modal=FALSE,
WFlags f=0) : QDialog(parent,name,modal,f)
{
QVBoxLayout* vb = new QVBoxLayout(this,8);
vb->setAutoAdd(TRUE);
hb = 0;
sm = new QSignalMapper(this);
connect(sm,SIGNAL(mapped(int)),this,SLOT(done(int)));
}
void addButtons( const QString& cancel=QString::null,
const QString& ok=QString::null,
const QString& mid1=QString::null,
const QString& mid2=QString::null,
const QString& mid3=QString::null)
{
addButton(ok.isNull() ? tr("OK") : ok, 1);
if ( !mid1.isNull() ) addButton(mid1,2);
if ( !mid2.isNull() ) addButton(mid2,3);
if ( !mid3.isNull() ) addButton(mid3,4);
addButton(cancel.isNull() ? tr("Cancel") : cancel, 0);
}
void addButton( const QString& text, int result )
{
if ( !hb )
hb = new QHBox(this);
QPushButton *c = new QPushButton(text, hb);
sm->setMapping(c,result);
connect(c,SIGNAL(clicked()),sm,SLOT(map()));
}
private:
QSignalMapper *sm;
QHBox *hb;
};
MyWidget* showLang(QString lang)
{
static QTranslator *translator = 0;
qApp->setPalette(QPalette(QColor(220-rand()%64,220-rand()%64,220-rand()%64)));
lang = "mywidget_" + lang + ".qm";
QFileInfo fi( lang );
if ( !fi.exists() ) {
QMessageBox::warning( 0, "File error",
QString("Cannot find translation for language: "+lang+
"\n(try eg. 'de', 'ko' or 'no')") );
return 0;
}
if ( translator ) {
qApp->removeTranslator( translator );
delete translator;
}
translator = new QTranslator( 0 );
translator->load( lang, "." );
qApp->installTranslator( translator );
MyWidget *m = new MyWidget;
return m;
}
int main( int argc, char** argv )
{
QApplication app( argc, argv );
const char* qm[]=
{ "de", "el", "en", "eo", "fr", "it", "jp", "ko", "no", "ru", 0 };
#if defined(_OS_UNIX_)
srand(getpid()<<2);
#endif
//QFont font("i18n,unifont,cyberbit;helvetica",16,50,FALSE,QFont::Unicode);
QFont font("unifont",16,50,FALSE,QFont::Unicode);
qApp->setFont(font);
QString 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 {
QButtonGroup *bg = new QButtonGroup(4,Qt::Vertical,"Choose Locales",&dlg);
for ( int i=0; qm[i]; i++ )
qmb[i] = new QCheckBox((const char*)qm[i],bg);
dlg.addButtons("Cancel","OK","All");
r = dlg.exec();
}
if ( r ) {
bool tight = qApp->desktop()->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::connect(w, SIGNAL(closed()), qApp, SLOT(quit()));
w->setGeometry(x,y,197,356);
w->show();
if ( tight ) {
x += 8;
y += 8;
} else {
x += 205;
if ( x > 1000 ) {
x = 5;
y += 384;
}
}
}
}
} else {
exit( 0 );
}
} else {
QString lang = argv[1];
QWidget* m = showLang(lang);
app.setMainWidget( m );
m->show();
}
// While we run "all", kill them all
app.exec();
#ifdef USE_I18N_FONT
memorymanager->savePrerenderedFont(font.handle(),FALSE);
#endif
}
Copyright © 2000 Trolltech | Trademarks
| Qt version 2.2.1
|