//去掉标题栏，无边框窗口，区别是第一个可以鼠标缩放窗口，但上方有一个白条故未采用
	//setWindowFlags(Qt::CustomizeWindowHint);
	setWindowFlags(Qt::FramelessWindowHint);

void Qwebengine::mousePressEvent(QMouseEvent* event)
{
	if (event->button() == Qt::LeftButton)
	{
		mMousePressed = true;
		mRelativeSrcPos = event->globalPos() - pos();
	}
}

void Qwebengine::mouseReleaseEvent(QMouseEvent* event)
{
	mMousePressed = false;
}

void Qwebengine::mouseMoveEvent(QMouseEvent* event)
{
	if (mMousePressed)
	{
		//当前位置减去相对的原点位置得到的是移动距离
		move(event->globalPos() - mRelativeSrcPos);
	}
}