Hi, I have created and registered a custom source filter. I have tested it using GraphEdit and it works ok. But when I try to use it from a Visual C++ project, I don''t know how to tell my code where to find this filter. I get the following errors: FilterTest.obj: error LNK2001: unresolved external symbol _CLSID_PushSourceD3D Debug_Unicode/FilterTest.exe : fatal error LNK1120: 1 unresolved externals Error executing link.exe. What must I do to make my project known about my custom filter? Thanks in advance

Already solved.. I just needed to include "initguid.h" before my DEFINE_GUID

#include <initguid.h>
#include "iD3DSurf.h"

DEFINE_GUID(.......)