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  • QPalette的用法

    1.QPalette的概念

        调色板类QPallete提供了颜色角色(color roles)概念,是指当前GUI界面中颜色的职责,通过枚举变量QPalette::ColorRole来定义,

        比较常用的颜色角色有:

        QPalete::Window,通常指窗口部件的背景色;

        QPalette:WindowText,通常指窗口不见的前景色;

      QPalette::Base,指文本输入窗口部件(比如QtextEdit,QLinedit等)的背景色.

        QPalette::Text,与QPalette::Base一块使用,指文本输入窗口部件的前景色;

        QPalette::Button,指按钮窗口部件的背景色;

        QPalette::ButtonText,指按钮窗口部件的前景色.

    2.QPalette的用法

        QTextEdit *textEditTip = new QTextEdit;

        QPalette pa = textEditTip->palette(); // 取出调色板

        pa.setColor(QPalette::Base,red); // 设置调色板

        textEditTip->setPalette(pa); // 放回调色板

    3.QPalette的例子

        QTextEdit *textEditTip = new QTextEdit;

        textEditTip->setMaximumHeight(20);

        textEditTip->setText("hello");

        QLabel *widget = new QLabel;

        widget->setMinimumWidth(200);

        widget->setText("world");

        widget->setStyleSheet("QLabel { background: red }");

        statusBar()->addPermanentWidget(widget);

        QPalette pal = widget->palette();

        QBrush brush = pal.background();

        QColor col = brush.color();

        QPalette pa = textEditTip->palette();

        pa.setColor(QPalette::Base,col);

        textEditTip->setPalette(pa);

        statusBar()->addPermanentWidget(textEditTip);

         解析: 将textEditTip的背景色设置为和widget的背景色一样。

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  • 原文地址:https://www.cnblogs.com/toby-zhang/p/5870899.html
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