How to monitor desktop environment mouse event in gtk programming

In GTK programming, how to monitor desktop environment mouse event while the GTK application is not active, i.e, the mouse is focus 开发者_如何学Goon other GTK application?

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Finally, I found a library keybinder which is what I want!

The homepage(http://kaizer.se/wiki/keybinder/) of that library introduces that keybinder is a library for registering global keyboard shortcuts. Keybinder works with GTK-based applications using the X Window System.