Supporting KLF_SETFORPROCESS flag in ActivateKeyboardLayout function.
Implement KLF_SETFORPROCESS for co_UserActivateKeyboardLayout.
Use KLF_SETFORPROCESS flag in WM_INPUTLANGCHANGEREQUEST handling.
Add co_IntSetKeyboardLayoutForProcess helper function.
- Add WM_IME_SYSTEM message handling on RealDefWindowProcA and RealDefWindowProcW functions.
- Improve WM_IME_... messages handling.
- s/IMMGWL_IMC/IMMGWLP_IMC/
- Don't set IMMGWLP_IMC value to the default IME window.
CORE-11700
This prevents the tracking menu from erroneously closing itself right after it was opened in some cases.
Fixes CORE-17338 which got unhidden by 0.4.15-dev-1126-g 58b0558f94
And fixes CORE-15760 which got unhidden by SVN r74972 == git 19dd22d422
Since both symptoms look very similar but the unhiding revisions did differ,
that could mean we do have some kind of race condition here.
I guess this fix is more like a workaround. I do intend to port it back nevertheless.