小部件教程 - 子小部件

我们可以通过在构造函数中将 `window ` 作为父窗口参数传递，向上一示例中创建的窗口添加子控件。在此示例中，我们将一个按钮添加到窗口中，并将其放置在特定位置：

#include <QtWidgets>

int main(int argc, char *argv[])
{
    QApplication app(argc, argv);
    QWidget window;
    window.resize(320, 240);
    window.setWindowTitle
          (QApplication::translate("childwidget", "Child widget"));
    window.show();

    QPushButton *button = new QPushButton(
        QApplication::translate("childwidget", "Press me"), &window);
    button->move(100, 100);
    button->show();
    return app.exec();
}

该按钮现在是窗口的子控件，当窗口被销毁时，它也将被删除。请注意，隐藏或关闭窗口并不会自动销毁该窗口。只有当示例退出时，窗口才会被销毁。

示例项目 @ code.qt.io

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