http://bugs.winehq.org/show_bug.cgi?id=3639
------- Additional Comments From T.Bonner@freesurf.ch 2006-24-05 17:19 ------- During a programming work, I ran into a similar problem: loaded an external bitmap for the toolbar (e.g. size was 64x15 for 4 buttons), and I erroneously used the following code: hwndTB = CreateToolbarEx (hwndParent, /* paranet window */ dwToolBarStyles, /* window styles flags */ 1, /* child ID */ 14, /*15,*/ /* number of images in the bitmap */ GetModuleHandle(0), /*HINST_COMMCTRL,*/ /* bitmap resource */ (int) MAKEINTRESOURCE(300), /* uiBitmap ,*/ /* bitmap id */ ptbb, /* button array */ iNumButtons, /* number of elements in array */ 16, 16, /* button size */ 16, 16, /* bitmap size */ sizeof (TBBUTTON) ); Here, the bitmap size y-value is wrong (I assumed the graphics was 16 in height, but actually it was 15). Windows had no problems with this wrong value, but in wine this resulted in a slightly wrong display. So I corrected the code and everything went fine. In this sense, windows showed a more robust behavior to wrong bitmap size values (although wine may be more correct here), and maybe this is also the case here (or I should do a new bug report).