Qt主窗口句柄空格键按下 [英] Qt mainwindow handle space key press

问题描述

我正在编写一个Qt程序，我想在用户按下Space时被触发，但是它不起作用.

I am programming a Qt programm and I want to get triggered, when the user presses Space, but it doesn't work.

mainwindow.h

protected:
    void keyPressEvent(QKeyEvent* event);

mainwindow.m

void MainWindow::keyPressEvent(QKeyEvent* event) {
    qDebug() << event->key();
}

除空格外，几乎所有键都在起作用.

Nearly every key is working, except for the space.

该空间是否有可能无法使用，因为某个UI元素有一些焦点，如果是，我该如何解决呢?

Could it be possible that the space isn't working, because there is some focus to an UI Element, if yes, how can I fix it?

推荐答案

uielement->setFocusPolicy(Qt::NoFocus);是一种解决方案

或

QApplication::focusWidget()和某种clearFocus()

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