You have to match exactly the method signature and it is case sensitive The method name). Are you sure it's a Windows DLL or is it a COM DLL?

>No. It did not work.
>
>****my code*****
>
>DECLARE Signal IN 3partyDll string, string, integer @, string @, integer , string, integer
>
>mcom="com1"
>mfile="c:\myfile.txt"
>mNres=0
>mCres=""
>mBoolian1=0
>mBoolian2=0
>
>=Signal(mcom, mfile, @mNres ,@mCres, mBoolian1, "",mBoolian2)
>
>I used integer instead of boolean.
>
>What I get is an error message:
>"Cannot find entry point Signal in the DLL"
>
>Where is the mistake!
>
>
>
>
>
>>Use Integer, 0 is false, 1 is true.
>>
>>
>>>What is the VFP equivalent for the following VB code?
>>>
>>>3partyDll.dll (the dll file)
>>>
>>>Signal in 3PartyDll
>>>arguments type
>>>---------------------------
>>>"com1" string
>>>"myfile.txt" string
>>>ExNresult integer && returned - expected Numeric result
>>>ExCresult string && returned - expected Nharacter result
>>>SupError boolean
>>>"" string
>>>mDos boolean
>>>
>>>----VB code ----
>>>Dim ExResult as String
>>>Dim Result as Intreger
>>>Dim mDos as Boolean
>>>Dim SupError as Boolean
>>>mDos = False
>>>SupError = False
>>>Call Signal("com1","\Mytext.txt",Result ,Exresult, mDos, "",SupError)
>>>
>>>----VFP code ---
>>>DECLARE Signal IN 3PartyDll (how do I pass boolean parameters?)
>>>
>>>Thanks