Qt菜单 QMenu QAction连接信号槽函数

最新推荐文章于 2025-07-03 21:55:34 发布

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最新推荐文章于 2025-07-03 21:55:34 发布 · 2.8w 阅读

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CC 4.0 BY-SA版权

文章标签：

#信号槽 #QMenu #QAction #菜单 #QSignalMapper

Menu菜单或其中的QAction 连接槽函数

以下两句connect 任一均可实现：

QStringList strList;
for(int i = 0; i< strList.size(); ++i)
{
    QString tmp = strList.at(i);
    QAction *act = new QAction(tmp, m_menu);
    act->setCheckable(true);
    act->setChecked(false);
    m_menu->addAction(act);
    connect(act, SIGNAL(triggered()), this, SLOT(checkedAction()));
}
//connect(m_menu, SIGNAL(triggered(QAction*)), this, SLOT(checkedLibAction(QAction*)));

QSignalMapper

      signalMapper = new QSignalMapper(this);

      for (int i = 0; i < texts.size(); ++i) {
          QPushButton *button = new QPushButton(texts[i]);
          connect(button, SIGNAL(clicked()), signalMapper, SLOT(map()));
          signalMapper->setMapping(button, texts[i]);
      }
      connect(signalMapper, SIGNAL(mapped(QString)), this, SIGNAL(clicked(QString)));