If you're using the static libraries configuration, you must also register OdOleItemHandler in the static module map:
#if !defined(_TOOLKIT_IN_DLL_) || defined(__MWERKS__)
ODRX_DECLARE_STATIC_MODULE_ENTRY_POINT(ModelerModule);
ODRX_DECLARE_STATIC_MODULE_ENTRY_POINT(ExRasterModule);
ODRX_DECLARE_STATIC_MODULE_ENTRY_POINT(OdRasterProcessingServicesImpl);
ODRX_DECLARE_STATIC_MODULE_ENTRY_POINT(OdOleItemHandlerModuleImpl);
ODRX_DECLARE_STATIC_MODULE_ENTRY_POINT(WinGDIModule);
ODRX_BEGIN_STATIC_MODULE_MAP()
ODRX_DEFINE_STATIC_APPLICATION(OD_T("ModelerGeometry"), ModelerModule)
ODRX_DEFINE_STATIC_APPLICATION(OD_T("RxRasterServices"), ExRasterModule)
ODRX_DEFINE_STATIC_APPLICATION(OD_T("RasterProcessor"), OdRasterProcessingServicesImpl)
ODRX_DEFINE_STATIC_APPLICATION(OD_T("OdOleItemHandler"), OdOleItemHandlerModuleImpl)
ODRX_DEFINE_STATIC_APPLICATION(OdWinGDIModuleName, WinGDIModule)
ODRX_END_STATIC_MODULE_MAP()
#endif
For a dynamic libraries configuration, OdOleItemHandler is loaded automatically if this .tx file is available in the program folder.