"Mikołaj Zalewski" <miko...@zalewski.pl> wrote: >>> +/* Note: TOOLBAR_DumpButton assumes the layout of the beginning of the >>> structure >>> + * is the same as of TBBUTTON */ >>> typedef struct >>> { >>> INT iBitmap; >>> @@ -96,6 +98,9 @@ typedef struct >>> BYTE fsStyle; >>> BYTE bHot; >>> BYTE bDropDownPressed; >>> +#ifdef _WIN64 >>> + BYTE bReserved64[4]; >>> +#endif >>> DWORD_PTR dwData; >>> INT_PTR iString; >>> INT nRow; >> >> >> Then probably it would make sense to make TBBUTTON the first member of the >> above >> structure. That would help in avoiding possible layout problems in future. >> > The bHot and bDropDownPressed would then be called bReserved[0] and > bReserved[1] so this could make more harm than > good.
You can make a union for that case, with an appropriate comment. -- Dmitry.