NetDDE32 Flat Thunk - Version 2.00 Flat thunk to 16-bit Microsoft NDDEAPI.DLL makes it possible to call network DDE functions from 32-bit applications. Directions on building flat thunks, list of required tools, and source code for flat thunk to NDDEAPI.DLL are included. This software package may serve as a prototype for building flat thunks to other 16-bit DLLs.