i''m doing my game using mfc.. currently..i''m learning the height map which can get from here.. http://www.gametutorials.com/Tutorials/OpenGL/OpenGL_Pg4.htm#HeightMaps now here comes to problems.. cos i''m doing the game using mfc..and i need to use the codes from the tutorials and apply it on my program.. i know how the terrain.h works..after i apply it on my game..i compile it..no errors but the terrain is not out.. can anyone tell me beside the terrain.h, which area or any particular coding i shld take note of it...as it will affect the ''drawing'' of the terrain...thanks!!!!!!