>Hi Ed
>
>Sorry to bother you again but I have managed to make some of the code work.
>The following code does not cause an error. The line I added was
>
>

> cDataBlock = REPLICATE(CHR(0),5000)
>

>
>The file is now uploaded but there is no data uploaded. I was wondering if it had something to do with where the cDataBlock is stored in memory?
>

You can try using a static block to pass the data; using ClsHeap, try this:

DECLARE Long Logger_Init IN c:\windows\system\taglogger.dll Long ComPort
i = Logger_Init(2)


DECLARE INTEGER  Logger_FileUpload IN c:\windows\system\taglogger.dll STRING @ Tagloggerfile, INTEGER lpDatablock
SET PROC TO "d:\vfp projects2\vfp base\clsheap.prg" ADDI
oHeap = CREATEOBJ('Heap')
cUploadFileName = "Test.txt"
cDataBlock = "Hello"
nBuffPointer = oHeap.AllocString(cDataBlock)

cTaggerLogFileStruc = PADR(ALLTRIM(cUploadFileName),13,chr(0)) + NumToLong(LEN(cDataBlock))

nResult = Logger_FileUpload(@cTaggerLogFileStruc,nBuffPointer)
oHeap.Dealloc(nBuffPointer)

>John
>
>
>

>
>DECLARE Long Logger_Init IN c:\windows\system\taglogger.dll Long ComPort
>i = Logger_Init(2)
>
>
>DECLARE INTEGER  Logger_FileUpload IN c:\windows\system\taglogger.dll STRING @ Tagloggerfile, STRING @ DataBlock
>
>
>SET PROC TO "d:\vfp projects2\vfp base\clsheap.prg" ADDI
>
>
>cDataBlock = REPLICATE(CHR(0),5000)
>
>
>cUploadFileName = "Test.txt"
>cDataBlock = "Hello"
>
>cTaggerLogFileStruc = PADR(ALLTRIM(cUploadFileName),13,chr(0)) + NumToLong(LEN(cDataBlock))
>
>nResult = Logger_FileUpload(@cTaggerLogFileStruc,cDataBlock)
>
>
>

>
>
>>>The error occurs when it reached the lnStatus = Logger_FileUpload(@lcFileStruc, @lcData) part
>>>
>>
>>Just out of curiousity, did you ever try appending a NULL character to the end of your data buffer? Maybe it expects a null terminator in the last position - I can't imagine why since you have to pass it a filelength, but it's worth a SWAG.
>>
>>>John.
>>>
>>>>>How do I find out?
>>>>>
>>>>
>>>>I can't see anything; it looks like the code should be correct. It's actually blowing yp at the point that you are doing the DECLARE...DLL; the only thing I can suggest is to try using the FOXTOOLS RegFn() and CallFn() routines to see if they handle it any better, or write a wrapper in VB.