add the thing

git-svn-id: http://svn2.nishi.boats/svn/milsko/trunk@92 b9cfdab3-6d41-4d17-bbe4-086880011989

include/Mw/OpenGL.h

@@ -24,6 +24,14 @@ MWDECL MwClass MwOpenGLClass;
  */
 MWDECL void MwOpenGLMakeCurrent(MwWidget handle);
 
+/*!
+ * %brief Get a procedure from OpenGL
+ * %param handle Widget
+ * %param name Name
+ * %return Procedure
+ */
+MWDECL void* MwOpenGLGetProcAddress(MwWidget handle, const char* name);
+
 /*!
  * %brief Swaps the buffer of OpenGL context
  * %param handle Widget

src/opengl.c

@@ -99,3 +99,15 @@ void MwOpenGLSwapBuffer(MwWidget handle) {
 	glXSwapBuffers(handle->lowlevel->display, handle->lowlevel->window);
 #endif
 }
+
+void* MwOpenGLGetProcAddress(MwWidget handle, const char* name) {
+#ifdef _WIN32
+	(void)handle;
+
+	return wglGetProcAddress(name);
+#else
+	(void)handle;
+
+	return glXGetProcAddress((const GLubyte*)name);
+#endif
+}