0023022: This is desirable to access OpenGl extensions and core API (1.2+) in one...
[occt.git] / src / OpenGl / OpenGl_Window.cxx
index e3ac8e0..0f0d37e 100644 (file)
@@ -15,6 +15,8 @@
 #include <Aspect_GraphicDeviceDefinitionError.hxx>
 #include <TCollection_AsciiString.hxx>
 
+#include <GL/glu.h> // gluOrtho2D()
+
 IMPLEMENT_STANDARD_HANDLE(OpenGl_Window,MMgt_TShared)
 IMPLEMENT_STANDARD_RTTIEXT(OpenGl_Window,MMgt_TShared)