unresolved external symbol __imp__InitCommonControlsEx@4

unresolved external symbol __imp__InitCommonControlsEx@4

Solution 1:
project > right click > properties > configuration properties > linker > input > Additional dependencies > add ""

Solution 2:
You must have these two lines:

#include <commctrl.h>
#pragma comment( lib, "comctl32.lib" )

Reference:
http://bobobobo.wordpress.com/2008/02/14/troubleshooting-trackbar/