码头的Qt调整大小事件

问题描述：

有没有一种方法可以捕获Qt中停靠站的调整大小事件?我需要能够检测坞站何时调整大小(不仅是其位置或功能"更改时).看来QDockWidget没有调整大小"信号.

Is there a way to catch resize events for docks in Qt? I need to be able to detect when a dock is resized (and not only when its location or 'features' change). It looks like there is no 'resized' signal for QDockWidget.

答

如果您不希望仅继承子类来获得调整大小的事件控制，则可以

If you do not wish to subclass to just get resize event control, you can installEventFilter

小例子看起来像(MainWindow.h):(MainWindow在此处保存DockWidget)

Small example would look like (MainWindow.h): (MainWindow holds DockWidget Here)

protected:
  bool eventFilter(QObject *obj, QEvent *event);

和(MainWindow.cc)中的

MainWindow::MainWindow(QWidget* parent)
    : QWidget(parent) {
  ui_.setupUi(this);
  ui_.dockWidget->installEventFilter(this);
}

bool MainWindow::eventFilter(QObject *obj, QEvent *event) {
  if (event->type() == QEvent::Resize && obj == ui_.dockWidget) {
      QResizeEvent *resizeEvent = static_cast<QResizeEvent*>(event);
      qDebug("Dock Resized (New Size) - Width: %d Height: %d",
             resizeEvent->size().width(),
             resizeEvent->size().height());
  } 
  return QWidget::eventFilter(obj, event);
}

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