The LEADTOOLS TWAIN Thunk Utility was created to enable you to interact with Win32 TWAIN drivers from a 64-bit process. For instance, a Scanner driver that is ONLY supported on a 32-bit environment will not be able to interact with a scanner from a 64-bit process application. The LEADTOOLS TWAIN Thunk Utility will help you to do so.
The LEADTOOLS THUNK Utility with TWAIN includes the following components:
Distributed files are:
To register the THUNK utility:
Go to the Windows Command prompt.
Type the following line:
C:\LEADTOOLS21\Bin\Common\LEADTOOLS Thunk\ltthunkserver.exe" /regserver
To use the THUNK utility, call L_TwainInitSession2 and pass LTWAIN_INIT_USE_THUNKSERVER to the uFlags parameter. The only time the THUNK server should be used is when using a TWAIN device that does not have a 64-bit driver and a 64-bit operating system is being used to run the application.