Removed the A/W constants for builtin cursors, icons and resource
types since they don't exist on Windows, and added typecasts
everywhere instead.

diff --git a/windows/class.c b/windows/class.c
index c4e7400..05f6ee4 100644
--- a/windows/class.c
+++ b/windows/class.c
@@ -475,7 +475,7 @@
         return 0;
     }
 
-    classPtr->hCursor       = LoadCursorA( 0, descr->cursor );
+    classPtr->hCursor       = LoadCursorA( 0, (LPSTR)descr->cursor );
     classPtr->hbrBackground = descr->brush;
 
     if (descr->procA) WINPROC_SetProc( &classPtr->winprocA, descr->procA,