拦截 Tab 按键手动管理焦点切换 [英] Intercepting Tab key press to manage focus switching manually

问题描述

我想在我的主窗口中拦截 Tab 按键，以防止 Qt 切换焦点.到目前为止，这是我尝试过的:

I want to intercept Tab key press in my main window to prevent Qt from switching focus. Here's what I've tried so far:

bool CMainWindow::event(QEvent * e)
{
    if (e && e->type() == QEvent::KeyPress)
    {
        QKeyEvent * keyEvent = dynamic_cast<QKeyEvent*>(e);
        if (keyEvent && keyEvent->key() == Qt::Key_Tab)
            return true;
    }
    return QMainWindow::event(e);
}

这不起作用，当我按下 Tab 时不会调用 event.如何实现我想要的?

This doesn't work, event isn't called when I press Tab. How to achieve what I want?

推荐答案

重新实现 virtual bool QApplication::notify(QObject * receiver, QEvent * e) 并将我的问题中的代码粘贴到那里是可行的.

Reimplementing virtual bool QApplication::notify(QObject * receiver, QEvent * e) and pasting the code from my question there works.

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