Reply To: how to develop a twain driver without UI ?

[r0d]

Re,

I progressed in my understanding of the foncitonnement of Twain, and I made some changes in my program.

My supported caps looks like this from now:
static TW_UINT16 gSupportedCaps [ SUPPORTEDCAPS] = {CAP_SUPPORTEDCAPS, ICAP_XFERMECH, CAP_XFERCOUNT, CAP_UICONTROLLABLE};

I succeed in treating (correctly I hope) the following triplets:
-> DG_CONTROL / DAT_IDENT ITY / MSG_GET
-> DG_CONTROL / DAT_IDENT ITY / MSG_OPENDS
-> DG_CONTROL / DAT_CAPABILITY / MSG_SET

Then, I receive Event, and I generate the event MSG_XFERREADY

But now, I wait for the triplet:
DG_IMAGE / DAT_IMAGEMEMXFER / MSG_GET
but I do not receive it.

Have you an idea of what I forgot?