QT 设置窗口透明度

最新推荐文章于 2025-03-13 11:29:14 发布

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最新推荐文章于 2025-03-13 11:29:14 发布

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分类专栏： QT 文章标签： QT

本文链接：https://blog.youkuaiyun.com/w823626691/article/details/78580168

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/**
	改变窗口透明度
	*/
	QMenu* menu = new QMenu(this);
	QAction* action = new QAction("transparence 10%", menu);
	action->setData(1);
	menu->addAction(action);

	action = new QAction("transparence 20%", menu);
	action->setData(2);
	menu->addAction(action);

	action = new QAction("transparence 60%", menu);
	action->setData(3);
	menu->addAction(action);

	action = new QAction("transparence 80%", menu);
	action->setData(4);
	menu->addAction(action);

	action = new QAction("transparence 100%", menu);
	action->setData(5);
	menu->addAction(action);
	
	menu->move(cursor().pos());

	QAction* pAction = menu->exec();
	if (pAction == NULL)
	{
		delete menu;
		return;
	}

	int Num = pAction->data().toInt();

	switch (Num)
	{
	case 1:
	{
		setWindowOpacity(0.1);
		break;
	}
	case 2:
	{
		setWindowOpacity(0.2);
		break;
	}
	case 3:
	{
		setWindowOpacity(0.6);
		break;
	}
	case 4:
	{
		setWindowOpacity(0.8);
		break;
	}
	case 5:
	{
		setWindowOpacity(1);
		break;
	}
	default:
		break;
	}

	delete menu;