Qt 4.4:禁用的小部件接收鼠标事件 [英] Qt 4.4: disabled widgets receiving mouse events

问题描述

正如标题所示，禁用的小部件是否可以接收鼠标事件?

As the title suggests, is there a way for a disabled widget to receive mouse events?

我正在使用QWidget::setEnabled()来更改小部件的外观，但我仍想接收其鼠标事件.在此先感谢:)

I'm using QWidget::setEnabled() for changing the appearance of widgets but I still want to receive their mouse events. Thanks in advance :)

推荐答案

您可以在相关小部件上使用事件过滤器来执行此操作.请参见 QObject :: eventFilter().您的实现可能看起来像这样:

You can do this with an event filter on the widget in question. See QObject::eventFilter(). Your implementation might look something like this:

bool MainWindow::eventFilter(QObject *obj, QEvent *event)
{
    if (ui->pushButton)
    {
        if (event->type() == QEvent::MouseButtonRelease)
        {
            qDebug() << "mouse button";
            return true;
        } else
        {
            return false;
        }
    } else
    {
        // pass the event on to the parent class
        return QMainWindow::eventFilter(obj, event);
    }
}

即使该按钮被禁用，这也将起作用.

This will work even if the button is disabled.

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