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Asked: 2026-06-01T22:47:57+00:00

i have an application written in VFP 7, somewhere in the application i call

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i have an application written in VFP 7, somewhere in the application i call a function in a dll using the following :

declare long FunctionName in DLL_NAME.dll string@, string@
.
.
.
RETURN FunctionName( StringParam1, StringParam2)

calling this function generates an error : 

The following error has occurred:
Message: Cannot load 32-bit DLL d:\folder\DLL_NAME.dll.

i tried registering the dll using the 32/64 bit regsvr…no luck !

Info that could help identify the problem :
the dll file is not local, it is in a folder in a network mapped drive.

thank you very much for your help.

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1 Answer

  1. Editorial Team

    Aside from VFP not supporting anything 64-bit, I would look at the fact you are trying to load a dll across the network.

    Eliminate that as a possible issue and copy it LOCALLY and load it from that…

    Try to eliminate everything ELSE, including your VFP application. I would start directly from the VFP command window and do nothing but have a simple .prg file. In it, put nothing but the declaration and reference a LOCAL copy of the dll file. Set the values for your parameters, and then call the function.

    If that doesn’t work, then it doesn’t matter WHERE in the application its being called… you’ve just eliminated that whole set of conditions and environment.

    Its almost like support I offer to clients sometimes when trying to do something in our app that requests data from the internet. I have them manually go to their browser and put in whatever URL our app would be trying to go to. If they can’t get to it from the browser, its something from their firewall, IP blocking, or other… it has nothing to do with our app. You might be running into a similar situation. Leave out all other elements and just get the few to absolutely test the problem isolated to itself.

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