Archived:如何显示正常和最大尺寸的widget

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存档: 这篇文章是存档，因为考虑到今天它与第三方开发者建立商业解决方案不相关。

Qt Quick should be used for all UI development on mobile devices. The approach described in this article (based on QWidget) is deprecated.

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文章

翻译:

翻译自: Archived:How to display a widget with normal and maximize size in Qt

由 hoolee

最后由 hamishwillee 在 11 Oct 2012 编辑

示例代码

#include <QApplication>
#include <QPushButton>
#include <QVBoxLayout>
 
int main(int argc, char *argv[])
{
    QApplication app(argc, argv);
 
    // win is the top level widget
    QWidget win;
    QVBoxLayout* layout = new QVBoxLayout(&win);
 
    // This button show the top level widget in a normal size
    QPushButton* normalSizeButton = new QPushButton("Normal size");
    QObject::connect(normalSizeButton, SIGNAL(clicked()), &win, SLOT(showNormal()));
    layout->addWidget(normalSizeButton);
 
    // This button maximize the widget size
    QPushButton* maximzeButton = new QPushButton("Maximize");
    QObject::connect(maximzeButton, SIGNAL(clicked()), &win, SLOT(showMaximized()));
    layout->addWidget(maximzeButton);
 
    // This button exit the application
    QPushButton* exitButton = new QPushButton("Exit");
    QObject::connect(exitButton, SIGNAL(clicked()), &app, SLOT(quit()));
    layout->addWidget(exitButton);
 
    win.show(); // show the top level widget
    return app.exec(); // start the event loop
}

当点击Normal Size后的输出

点击最大化后的输出