部件教程 - 子部件

我们可以将window 作为父部件传递给构造函数，从而为上一示例中创建的窗口添加一个子部件。在本例中，我们为窗口添加了一个按钮，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();
}

按钮现在是窗口的子部件，将在窗口销毁时被删除。请注意，隐藏或关闭窗口并不会自动销毁窗口。它将在示例退出时被销毁。

示例项目 @ code.qt.io

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