Check if _WIN32_IE is defined with proper value in window_w32.cpp
Check if _WIN32_IE is defined with proper value in window_w32.cpp

TBBUTTONINFO struct and BTNS_xxx symbols used in the code need _WIN32_IE to be defined with at least 0x0500 value (_WIN32_IE_IE50) in order to be included from commctrl.h.

opencv/opencv,apavlenko/opencv,apavlenko/opencv,apavlenko/opencv,opencv/opencv,opencv/opencv,apavlenko/opencv,opencv/opencv,apavlenko/opencv,opencv/opencv,opencv/opencv,opencv/opencv,opencv/opencv,opencv/opencv,apavlenko/opencv,opencv/opencv