Hi,

we control some laboratory equipment with a LabJack U3-HV interface. The manufacturer of the interface provided a dll file and a Delphi wrapper for the dll file to read and set the ports of the interface. This works well with Delphi XE2.

But when I try to migrate to Lazarus 2.0, this wrapper is not accepted. It appears a error message 'Calling convention doesn't match forward'. Delphi XE2 doesn't complain about any convention difficulties in the wrapper file. I tried to harmonize the calling convention prescriptions in the interface and the implementation part of the wrapper- no success.

Is this a Lazarus or FPC bug, or a (perhaps undocumented) incompatibility between Delphi XE2 and Lazarus 2.0? Or do I oversee something? We are using Win 10, Version 1809 (64). The wrapper itself  can be downloaded from
http://transfer.joepgen.com/wrapper.pas

Regards --  Joe



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