OK. I was unfortunately unable to make this test work on Win XP, although behavior is the same, GetWindowRect() on g_hwnd_ttip returns incorrect dimensions and GetWindowRect() on hwndTip returns what is passed to CreateWindowExA(). The one randomly failed test is related probably to flush_events(), I am not sure if it does what is expected.
Dne 26.2.2018 v 13:48 Nikolay Sivov napsal(a):
Yes, this makes sense. I'll test it a little bit more, in particular if resizing in TTN_SHOW handler clips balloon or adjusts its proportions instead.