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diff --git a/src/gwin/gwin_gl3d.h b/src/gwin/gwin_gl3d.h
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+++ b/src/gwin/gwin_gl3d.h
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+/*
+ * This file is subject to the terms of the GFX License. If a copy of
+ * the license was not distributed with this file, you can obtain one at:
+ *
+ *              http://ugfx.org/license.html
+ */
+
+/**
+ * @file	src/gwin/gwin_gl3d.h
+ * @brief	GWIN 3D module header file
+ *
+ * @defgroup 3D 3D
+ * @ingroup Windows
+ *
+ * @details	3D GWIN window based on OpenGL (or more exactly Tiny GL)
+ * @pre		GFX_USE_GWIN must be set to TRUE in your gfxconf.h
+ * @pre		GWIN_NEED_GL3D must be set to TRUE in your gfxconf.h
+ *
+ * @{
+ */
+
+#ifndef _GWIN_GL3D_H
+#define _GWIN_GL3D_H
+
+/* This file is included within "gwin/gwin.h" */
+
+
+// A gl3d window
+typedef struct GGL3DObject {
+	GWindowObject		g;
+	struct GLContext *	glcxt;
+	} GGL3DObject;
+
+/*===========================================================================*/
+/* External declarations.                                                    */
+/*===========================================================================*/
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * @brief   Create a gl3d window.
+ * @return  NULL if there is no resultant drawing area, otherwise a window handle.
+ *
+ * @param[in] g			The GDisplay to display this window on
+ * @param[in] gg		The GGL3DObject structure to initialise. If this is NULL the structure is dynamically allocated.
+ * @param[in] pInit		The initialization parameters to use
+ *
+ * @note				The drawing color and the background color get set to the current defaults. If you haven't called
+ * 						@p gwinSetDefaultColor() or @p gwinSetDefaultBgColor() then these are White and Black respectively.
+ * @note				The font gets set to the current default font. If you haven't called @p gwinSetDefaultFont() then there
+ * 						is no default font and text drawing operations will no nothing.
+ * @note				The dimensions and position may be changed to fit on the real screen.
+ *
+ * @api
+ */
+GHandle gwinGGL3DCreate(GDisplay *g, GGL3DObject *gg, const GWindowInit *pInit);
+#define gwinGL3DCreate(gg, pInit)			gwinGGL3DCreate(GDISP, gg, pInit)
+
+/* Include the gl interface */
+#include "3rdparty/tinygl-0.4-ugfx/include/GL/gl.h"
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif	/* _GWIN_GL3D_H */
+/** @} */
+