The SetCallback method receives a pointer to a client-implemented callback interface.
HRESULT SetCallback (
[in] IUnknown* pCallback
);
pCallback
Pointer to ILITCallback implementation to receive text messages during content preparation. This parameter is optional; passing NULL will cause Litgen.dll to release the previously registered ILITCallback, if any, and stop sending messages.
This call is optional, but highly recommended. It is very helpful for troubleshooting during tool development, and useful to anyone troubleshooting an error.
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