Function to select input-keyboard language

[ssimop]

Dear Gintaras, thank you for your advice. As I wrote, it was empirically that I found that SendKeysToWindow works. I would prefer to use instead :

key CS

but when in Notepad this command switches to "Right-to-Left Reading Order". Actually, when keying manually it is Control+Right Shift that is switching to Right-to-Left. I wonder whether there exists any tweak in XP to disable this shortcut in Notepad. I have searched, but in vain.

Best Regards.