How to programmatically determine the system hotkey?

Question

I am looking for a way to programmatically detect hotkeys in a system. My application supports customizable hotkeys to do different things, and I would like to know if another application already hooked it or the built-in Windows hotkey (for example, Win-L to lock a workstation).

And if this is another application that owns a hotkey, I would like to show it to the user. At least the name is exe.

I know of three ways to create hotkeys:

• Capture a system using standard APIs
• Using the hotkey function in the properties dialog box for a shortcut
• Asynchronous polling state status and response

I doubt I can detect the third type, but what about the other two? And are there other situations that I need to know about?

Answer 1

I can imagine three ways to do this with the standard API:

• Registerhotkey

• SetWindowsHookEx (WH_KEYBOARD)

• SetWindowsHookEx (WH_LL_KEYBOARD)

At the first approach, you will get a return value whether another application was already registered with the same hotkey (or the shortcut uses this hotkey, or Explorer.exe registered a hotkey because it is Win + E or win + R). You do not get the application name this way.

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