Calling CreateFile in a 16-bit program

Hi all !

I hope I've chosen the right forum - please excuse me if not.

I'm trying to call the CreateFile function of kernel32.dll from a 16-bit program (written in BPW 7.0), using the thunk functions of the 16-bit kernel (LoadLibraryEx32W, FreeLibrary32W, GetProcAddress32W, GetVDMPointer32W and CallProc32W).

Under Windows NT 4.0 (SP6) and Windows 2000 Pro (SP4) I get an access violation error in NTDLL.DLL.

I've verified all the parameters and I've converted all 16:16 pointers to linear addresses : it still doesn't work.
It's the first time I get an error with the thunk functions.

Could someone explain me what's wrong ?

Finally it works !

Instead of letting the CallProc32W translate the 16:16 addresses into linear ones, I use the GetVDMPointer32W directly.
I don't understand why it works but... I enjoy it because this problem has haunted me for 2 months !