I'm a little confused about the GPC approach to binding to C libraries. The documentation is a little sketchy and warns that some changes might occur. Is there some clarification available ? Also, bindings of FPC to OpenGL are available, which are derived from Delphi3D. These are mostly limited to Win32.DLLs . Has anybody started a GPC to OpenGL or Mesa binding for Linux ? Might it be appropriate to simply start from the FPC template ? Thanks, Rick.