How to react event when window user enter focus into an input area?

Question

I'm going to implementing an On Screen Keyboard for Window which requires the OSK app to show when an user enter an input area. For example, when a user open notepad.exe and start clicking on it, my OSK app (currently run in system tray) should be showed.

I have no idea how to catch those event (user click on notepad app) but I guess it relates to the Win32 things. Can anybody give me a hint for this ? Would be highly appreciated.

Thanks

Is there a reason that the On-Screen Keyboard included standard with every Windows installation isn't good enough for you? — Cody Gray - on strike, Nov 14 '10 at 09:47

Frédéric Hamidi · Accepted Answer · 2010-11-14T10:03:27.530

1

You'll probably have to set a global hook, using e.g. SetWindowsHookEx(), in order to monitor the WM_SETFOCUS messages sent to all the edit controls in all the applications.

That's quite intrusive, and that won't be easy. Good luck.

edited Nov 14 '10 at 10:03

answered Nov 14 '10 at 09:55

Frédéric Hamidi

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Fantastic ! Seem it's what I am looking for. Will have a look at it. Thanks for your hint. – user460172 Nov 14 '10 at 11:11

How to react event when window user enter focus into an input area?

1 Answers1