>>>Cetin and Ed:
>>>
>>>With your help now this code is working. But sometimes DoubleToNum function provokes C000005 error.
>>>
>>>Indeed I am forgetting something.
>>>
>>>Alejandro Fernandez
>>Alejandro,
>>Are you sure it's DoubleToNum invoking C000005 ? Might it something else with DLL.
>>Cetin
>
>I found this error tracing the source with SET STEP ON.
That will happen if the address in memory is not valid; either it's non-existant, or you do not have read privileges for the address. Check the value of the pointer - some people's implementation of the DWORDToNum() UDF is subtly flawed, since VFP treats a 4 byte integer as a value between -2147483647 to 2147483647, not 0 to 4294967295.
