在构造函数中:setMouseTracking(true);
void LumiaMainwindow::mouseMoveEvent(QMouseEvent *mouseEvent)
{
if((mouseEvent->x()<(center->mask().boundingRect().bottomRight().x()+50))&&
((mouseEvent->x())>(center->mask().boundingRect().bottomRight().x())))
{
mouseEvent->accept();
setCursor(QCursor(Qt::SizeHorCursor));
}
else
{
setCursor(QCursor(Qt::ArrowCursor));
}
QMainWindow::mouseMoveEvent(mouseEvent);
}