Change input language of another application

Question

I want to change the input language of the active window. The problem is that the active window is not my application. I know about InputLanguage.CurrentInputLanguage = lang; but it changes the language for my WinForms application and not for the active application.

Summary: my situation is that my program listens to any keyboard event (even when it's not focused) and executes code when I press F1.

I want this press on F1 to change the language to Hebrew in Notepad which was the active application when I pressed F1.

I am interested in either a low level solution or a high level solution.

possible duplicate of [Switch input language on remote application](http://stackoverflow.com/questions/1261494/switch-input-language-on-remote-application) — Gilles 'SO- stop being evil', Apr 26 '12 at 18:50
Using F1 for anything else than launching help for the current application is probably unexpected for the user. — Christian.K, Apr 26 '12 at 18:55

score 2 · Answer 1 · answered May 27 '18 at 08:09

You should know another application's hWnd and post a message for it

    public void InputLangChangeRequest(IntPtr hwnd, InputLanguage language)
    {
        IntPtr handle = InputLanguage.Handle;
        PostMessage(hwnd, WM_INPUTLANGCHANGEREQUEST, IntPtr.Zero, handle);
    }

score 1 · Answer 2 · edited May 23 '17 at 10:34

1

This might be a duplicate of this Switch input language on remote application

This reference can also help. http://msdn.microsoft.com/en-us/library/ms724947

edited May 23 '17 at 10:34

Community

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answered Apr 26 '12 at 17:45

John Sykor

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Change input language of another application

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