2013/1/14 Nikolay Sivov <bungleh...@gmail.com>: > On 1/15/2013 00:53, Daniel Jelinski wrote: > >> + if(lParam == -1) >> + return LISTVIEW_SetIconSpacing(infoPtr, -1, -1); >> + return LISTVIEW_SetIconSpacing(infoPtr, LOWORD(lParam), >> HIWORD(lParam)); > > Why do you need to handle this case specially? If it's -1 for 64bit comctl32 > it should give you the same values with HIWORD/LOWORD as it does for 32bit.
On 64bit the behavior with lParam=0xFFFFFFFF is different from that with lParam=-1. HIWORD/LOWORD values are the same, so without this special case they would behave the same way.
