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What is Project Compatibility in VB6?

Posted By :Ghanashyam Nayak     Posted Date :January 03, 2011    Points :15   Category :VB.Net 
With this setting, VB will generate new interface ID's for classes whose interfaces have changed,
but will not change the class ID's or the type library ID. This will still cause any compiled client
components to fail (with error 429!) but will not report a missing reference to the 'VB ActiveX
Test Component' when a client project is loaded in the VB IDE. Recompilation of client
components will restore them to working order again.

You can also find related Interview Question to What is Project Compatibility in VB6?  below: 

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How will you set the compatibility level for your Sql Server Database?

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What is No Compatibility in VB6?

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calls having the old ID with the new ID and hence applications built against the old interface will
continue to work (assuming the inner workings of the component remain backward compatible!).
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