Well .. again it's me - again another question ;) ..
I have one Application which receives all kinds of messages - especially WM_PAINT and WM_SETFOCUS. Now, from another application I want to send such a message, but I do not want to send WM_PAINT, but well .. something different which does not exist.
On a normal control it shouldn't do anything (so sending WM_SETFOCUS would be completely wrong ;) ) .. only a control which reacts on that message should be affected.
Do I have to do this with a WM_USER Message ? How would I do that ... I'm only interested in the sending Part, I don't care about receiving - cause this already works for WM_PAINT Messages