Qt国际化（I18N）

#include "QHMainWindow.h" #include "ui_QHMainWindow.h" #include <QPainter> #include <QPainterPath> #include <QDebug> QHMainWindow::QHMainWindow(QWidget *parent) : QMainWindow(parent) , ui(new Ui::QHMainWindow) { ui->setupUi(this); } QHMainWindow::~QHMainWindow() { delete ui; } void QHMainWindow::setTranslator(QTranslator *translator) { m_translator = translator; } void QHMainWindow::changeEvent(QEvent *event) { switch (event->type()) { case QEvent::LanguageChange: translateUI(); qDebug()<<"BBBBBBBBBBBBBB"; break; default: QWidget::changeEvent(event); } } void QHMainWindow::paintEvent(QPaintEvent *event) { QPainter painter(this); QPen pen(Qt::red, 2, Qt::SolidLine); painter.setRenderHint(QPainter::Antialiasing, true); painter.setPen(pen); painter.setBrush(Qt::transparent); QFont font("宋体", 60, QFont::Bold); QFontMetrics fm(font); QString str(tr("Happy New Year")); QPainterPath textPath; textPath.addText((width() - fm.horizontalAdvance(str)) / 2, (height() + fm.height()) / 2 - fm.descent(), font, str); painter.drawPath(textPath); } void QHMainWindow::translateUI() { ui->switchLanguageButton->setText(tr("Switch Language")); update(); } void QHMainWindow::slotSwitchLanguage(QHSettingDialog::Language language) { QString qmFile = ":/language_zh.qm"; switch(language) { case QHSettingDialog::Chinese: qmFile = ":/language_zh.qm"; break; case QHSettingDialog::EngLish: qmFile = ":/language_en.qm"; break; } m_translator->load(qmFile); qDebug()<<"AAAAAAAAAAAAAAAAAA"; } void QHMainWindow::on_switchLanguageButton_clicked() { QHSettingDialog settingDialog; connect(&settingDialog, &QHSettingDialog::signalSwitchLanguage, this, &QHMainWindow::slotSwitchLanguage); settingDialog.exec(); }