动态切换语言(带源码)

//dialog.cpp
#include
#include "dialog.h"
Dialog::Dialog(QWidget *parent)
: QDialog(parent)
{
label=new QLabel(this);
okButton=new QPushButton(this);
connect(okButton,SIGNAL(clicked()),this,SLOT(switchlang()));
flag=0;
retranslateStrings();
QVBoxLayout *mainLayout = new QVBoxLayout;
mainLayout->addWidget(label);
mainLayout->addWidget(okButton);
setLayout(mainLayout);
}
void Dialog::retranslateStrings()
{
label->setText(tr("Name:"));
okButton->setText(tr("Switch Language"));
setWindowTitle(tr("Switch Language ..."));
}
void Dialog::switchlang()
{
QTranslator translator;
if(0==flag){
translator.load("switchlang_zh");
flag=1;
}else
{
flag=0;
}
qApp->installTranslator(&translator);
retranslateStrings();
}
//dialog.h
#ifndef DIALOG_H
#define DIALOG_H
#include <QDialog>
class QLabel;
class QPushButton;
//! [0]
class Dialog : public QDialog
{
Q_OBJECT
public:
Dialog(QWidget *parent = 0);
private:
QLabel *label;
QPushButton *okButton;
int flag;
private slots:
void retranslateStrings();
void switchlang();
};
//! [0]
#endif
//main.cpp
#include <QApplication>
#include "dialog.h"
int main(int argc, char *argv[])
{
QApplication app(argc, argv);
Dialog dialog;
dialog.show();
return app.exec();
}
//switchlang.pro
TEMPLATE = app
TARGET =
DEPENDPATH += .
INCLUDEPATH += .
# Input
HEADERS += dialog.h
SOURCES += dialog.cpp main.cpp
TRANSLATIONS+=switchlang_zh.ts