响应应用程序范围内的“热键".在Qt中 [英] Respond to application-wide "hotkey" in Qt

问题描述

我有一个简单的Qt应用程序，我只想响应 F12 键，而不管哪个窗口小部件具有焦点.

I've got a simple Qt app, and I just want to respond to the F12 key, regardless of which widget has focus.

是否有一些简单的信号或可以挂接到的东西?

Is there some easy signal or something I can hook in to?

我想使用 F12 键在全屏状态下打开/关闭主窗口.

I want to use the F12 key to toggle the main window fullscreen on/off.

推荐答案

我没有尝试过，但这是我会做的事情:

I haven't tried, but here is what I would do :

创建一个 Q快捷方式，并确保其

Create a QShortcut and make sure its context (with setContext()) is Qt::ApplicationShortcut.

shortcut = new QShortcut(QKeySequence(Qt::Key_F12), parent);
shortcut->setContext(Qt::ApplicationShortcut);

然后，您只需要将插槽连接到 QShortcut :: activated ()信号.

Then you just need to connect a slot to the QShortcut::activated() signal.

这篇关于响应应用程序范围内的“热键".在Qt中的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！