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-rw-r--r--include/pugl/detail/win.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/include/pugl/detail/win.h b/include/pugl/detail/win.h
index b0d92e0..0ead1fa 100644
--- a/include/pugl/detail/win.h
+++ b/include/pugl/detail/win.h
@@ -19,6 +19,9 @@
@brief Shared definitions for Windows implementation.
*/
+#ifndef PUGL_DETAIL_WIN_H
+#define PUGL_DETAIL_WIN_H
+
#include "pugl/detail/implementation.h"
#include <windows.h>
@@ -145,3 +148,5 @@ puglWinStubEnter(PuglView* view, const PuglEventExpose* expose);
PuglStatus
puglWinStubLeave(PuglView* view, const PuglEventExpose* expose);
+
+#endif // PUGL_DETAIL_WIN_H