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#1 Posted : Thursday, March 3, 2022 1:34:38 PM(UTC)


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Is it possible to run V20 and V22 Leadtool's libraries concurrently? We are using the C API and explicit linking to the Dlls.
We are considering an upgrade and I am trying to resolve some deployment questions.


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#2 Posted : Thursday, March 3, 2022 2:51:38 PM(UTC)
Marcus Andra

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You will not be able to reference v20 and v22 dependencies within the sample application. You should be using all v20 dependencies. or all v22 dependencies and not both. No matter which platform you are using for development, you will first need to set your license by satisfying the L_SetLicenseFile function (For CDLL).

This will check the version of the LEADTOOLS kernel DLL you are referencing and will throw an exception if the license version does not match the DLL the application is using. We have tutorials which show how you can reference LEADTOOLS DLLs on our website here:

Please let us know if we can be of any other assistance.
Marcus Andra
Developer Support Engineer
LEAD Technologies, Inc.
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