Here is what I am using to test with:

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DECLARE INTEGER TWAIN_IsAvailable IN EZTW32 AS TW_Avail
DECLARE INTEGER TWAIN_EasyVersion IN EZTW32 AS TW_Ver
DECLARE INTEGER TWAIN_SelectImageSource IN EZTW32 AS TW_SelectImageSource
DECLARE INTEGER TWAIN_AcquireNative IN EZTW32 AS TW_AcquireNative
DECLARE INTEGER TWAIN_WriteNativeToFilename IN EZTW32 AS TW_WriteNativeToFilename
DECLARE INTEGER TWAIN_FreeNative IN EZTW32 AS TW_FreeNative

cAvail = TW_Avail()
cVer = TW_Ver()
cImgSrc = TW_SelectImageSource()
cAcqNat = TW_AcquireNative()
cToFile = TW_WriteNativeToFilename()
cFreeNat = TW_FreeNative()
---------------------------------------------------

I was able to figure some of this out from a FPW example, but
am having trouble in making these work in VFP.

The first error I keep getting is: 'EZTWAIN: window handle is invalid'. This error seems to just be more informative than
a real error. But I would still like to get rid of it.

The next error occurs at TW_AcquireNative(): 'Failed to negotiat pixel type. App and source found no values in common.'

I am sure I am missing parameters, but I do not know
what or how they are used. I looked through the 500+ pages of
documentation for EZTwain but am not really understanding how
to implement these perameters.

Does someone know a source where I can find info on using VFP with
EZTW32.DLL? Or has anyone already done this that knows these parameters?