I haven't tried this, but ... I think you were on the right track about integrating into an app--I think you just need to use the IN ourApp.APP clause of the SET CLASSLIB command.

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>We like to let developers use our classlibrary but we don't want to give them the possibility to modify the library or even look at the code.
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>Offcourse we subclassed the library and we try to integrate the class in an app and use SET CLASSLIB but that doesn't work.
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>Does somebody has an idea to do this?
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>Marco