Thanks for responding, Lord Orwell.
I also use this API to to simulate some function keys like Delete, Home, End, Left, Right, ....
I could also use it for the alphabet keys (but only the uppercase ones) and the numerical keys 0..9.
I use the WM_CHAR message because like this I can also send lowercase keystrokes to the recipient window or other keys like ", $, !, ... which are not supported with the keyb_event API, not?
The problem with WM_CHAR is that it won't do anything with some windows (like MS Word, Outlook Express, ...).
So, how can I simulate these special keystrokes to the recipient using keyb_event?