Migratinn from version 1.7 to 2.2

[pallaviseth]

need help migrating twain 1.7 to 2.2.
Anyone please help me provideing step wise solution to this issue.
we are using c# for the development.
When we call
TwRC rc =DSMparent(appid, IntPtr.Zero, TwDG.Control, TwDAT.Parent, TwMSG.OpenDSM, ref hwndp);

Above line returning false. but it should returnsuccess as result.

need a quick solution .please reply.

[spike]

Any chance you are compiling with platform=AnyCPU and then running on a 64-bit OS?
That will run your code in a 64-bit process, which won’t be able to load the old (32-bit only) DSM.

There’s no point using 64-bit TWAIN, because there are no 64-bit drivers, and 32-bit drivers are invisible to 64-bit apps.

So make sure your app is compiled platform=x86

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