These are the errors i get C:\My Documents\C++ Programming\OpenGL\FirstOpenGL\FirstOpenGL.cpp(43) : error C2065: ''glClearDept'' : undeclared identifier C:\My Documents\C++ Programming\OpenGL\FirstOpenGL\FirstOpenGL.cpp(45) : error C2065: ''glDeptFunc'' : undeclared identifier C:\My Documents\C++ Programming\OpenGL\FirstOpenGL\FirstOpenGL.cpp(55) : error C2065: ''GL_DEPT_BUFFER_BIT'' : undeclared identifier Error executing cl.exe. i have these include statements #include #include #include #include Other gl calls such as the ones below works fine. glViewport( 0, 0, width, height ); glMatrixMode( GL_PROJECTION ); glLoadIdentity(); Tha Funkalicious one