Index: modules/highgui/src/window_w32.cpp
===================================================================
--- modules/highgui/src/window_w32.cpp	(revision 4802)
+++ modules/highgui/src/window_w32.cpp	(working copy)
@@ -1498,7 +1498,8 @@
     trackbar->maxval = count;
 
     /* Adjust slider parameters */
-    SendMessage(trackbar->hwnd, TBM_SETRANGE, (WPARAM)TRUE, (LPARAM)MAKELONG(0, count));
+    SendMessage(trackbar->hwnd, TBM_SETRANGEMIN, (WPARAM)TRUE, (LPARAM)0);
+    SendMessage(trackbar->hwnd, TBM_SETRANGEMAX, (WPARAM)TRUE, (LPARAM)count);
     SendMessage(trackbar->hwnd, TBM_SETTICFREQ, (WPARAM)1, (LPARAM)0 );
     if( val )
         pos = *val;