--- q_a/samples/bezier/bezier.c	2018/08/09 18:29:19	1.1
+++ q_a/samples/bezier/bezier.c	2018/08/09 18:29:37	1.1.1.2
@@ -206,8 +206,8 @@ static int   svIndex;
         PolyBezier (hdc, svPoints, svNumDown+1);
 
         /* Change the point to match the new mouse position. */
-        svPoints[svIndex].x = LOWORD(lParam);
-        svPoints[svIndex].y = HIWORD(lParam);
+        svPoints[svIndex].x = (int)(short)LOWORD(lParam);
+        svPoints[svIndex].y = (int)(short)HIWORD(lParam);
 
         SelectObject(hdc, hPenLine);
         Polyline (hdc, svPoints, svNumDown+1);