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-rw-r--r--pugl/pugl_win.cpp7
1 files changed, 7 insertions, 0 deletions
diff --git a/pugl/pugl_win.cpp b/pugl/pugl_win.cpp
index 63d484f..b006af0 100644
--- a/pugl/pugl_win.cpp
+++ b/pugl/pugl_win.cpp
@@ -24,6 +24,13 @@
#include "pugl_internal.h"
+#ifndef WM_MOUSEWHEEL
+# define WM_MOUSEWHEEL 0x020A
+#endif
+#ifndef WM_MOUSEHWHEEL
+# define WM_MOUSEHWHEEL 0x020E
+#endif
+
struct PuglInternalsImpl {
HWND hwnd;
HDC hdc;