Qt child widget stop inherit parent widget image(Qt子窗体stylesheet不继承父窗体stylesheet)

设置一个QWidget(及其子类)的背景图片的两种方法

方法一：将图片用QPixmap存储，使用QPainter::drawPixmap()

void BackGroundPicture::paintEvent( QPaintEvent * )
{
QPixmap bkgnd(":/form/Resources/1.png");
QPainter painter(this);
painter.drawPixmap(this->rect(),bkgnd);
}

方法二：使用setStyleSheet()

void BackGroundPicture::paintEvent( QPaintEvent * )
{
QStyleOption o;
o.initFrom(this);
QPainter p(this);
style()->drawPrimitive(QStyle::PE_Widget,&o,&p,this);
}

frame = new QFrame(this);
frame->setStyleSheet("border-image: url(:/g/C:/Users/heqinghui/Desktop/history/background1.png)");

frame->setObjectName("FrameObjectName");
frame->setStyleSheet("#FrameObjectName { border-image: url(:/g/C:/Users/heqinghui/Desktop/history/background1.png); } ");