用键盘设置全屏和非全屏

首先在.h文件中定义void keyPressEvent(QKeyEvent *e); ,然后再.cpp中进行实现

void SlwView::keyPressEvent(QKeyEvent *e)

{

    if(e->key() == Qt::Key_F11)

    {

        if(this->isFullSreen)

            this->showNormal();

        else

            this->showFullSreen();

    }

}