Forums › TWAIN Classic › Failure w/TwainDSM.dll on OPENDSM when ProductName is NULL › Reply To: Failure w/TwainDSM.dll on OPENDSM when ProductName is NULL
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i am not a designer of twain, but according to the spec, which says:
The application must allocate a structure of type TW_IDENTITY and fill in all fields except
for the Id field. Once the structure is prepared, this
pOrigin parameter should point at that structure.
I would asume that it is expected that the Product name is not NULL.
I have seen this behavior myself and have corrected the TW_IDENTITY structure which is given to twain.