还有我的一个窗体设置了掩码之后,再设置置顶就不行了这是怎么回事?
Form::Form(QWidget *parent,Qt::WindowFlags f) :
        QWidget(parent),
        ui(new Ui::Form)
    {
        ui->setupUi(this);
    //this->setWindowFlags(Qt::WindowStaysOnTopHint|Qt::CustomizeWindowHint|Qt::Tool);
    //this->setAttribute(Qt::WA_TranslucentBackground,true);//穿透属
    //this->setWindowFlags(Qt::FramelessWindowHint);
    image.fill(QColor(254,254,254));
    bitmap = image.createMaskFromColor(QColor(254,254,254),Qt::MaskOutColor);
        this->setMask(bitmap);
    pp = false;
}