用任意一个按键模拟TAB键的功能

用任意一个按键模拟TAB键的功能

void tab_simulate()
{
QKeyEvent event(QEvent::KeyPress, Qt::Key_Tab, Qt::NoModifier);
QApplication::sendEvent(this, &event);

QWidget* widget = this->focusWidget();
QPushButton* pushbutton = dynamic_cast<QPushButton*>(widget);
while (pushbutton == 0)
{
QKeyEvent event(QEvent::KeyPress, Qt::Key_Tab, Qt::NoModifier);
QApplication::sendEvent(this, &event);
widget = this->focusWidget();
pushbutton = dynamic_cast<QPushButton*>(widget);
}
}
把它作为一个槽函数，用一个按钮的click()信号来和它connect起来即可