Grazvydas Ignotas notasas@gmail.com writes:
Confuses TFM/VGM Music Maker, see bug 41647.
The problem triggers at the time the window is activated as a result of SetWindowPos(), then WM_MOUSEACTIVATE arrives which definitely doesn't happen on Windows. Probably should somehow get rid the fake click completely, but it has been around for a very long time and this patch is enough to fix the app.
That doesn't seem right. Probably what you want is to skip the fake click if the window is already active or something along those lines.