Automation DLL

[eric33]

I have an automation DLL (OPCdaauto.Dll) that implements several interfaces.
I add it using Add Reference command and all interfaces of the DLL are available.

But i cannot call functions that wait for a array of long.
Looking at the prototypes in the references browser (F2) the format is :


sub Remove(NumItems as Long, ServerHandles() as Long, Errors() as Long)




and i call the method like this:


dim numitems as long
dim serverhandles(10) as long
dim errors(10) as long
numitems=1
serverhandles(0)=1
errors(0)=0
items.Remove NumItems,serverhandles,errors
' i try too
items.Remove NumItems,serverhandles(),errors()




i have an exception with description :
Incompatible type

What could be my problem ?
How to exactly now what the dll is waiting for (i have no documentation) ?

thanx

[Ravi Kiran]

I am not very sure, if this can solve your problem.. just a shot in air :-)

Declare your arrays not as predefined size. ie.
dim numitems as long
dim serverhandles() as long
dim errors() as long


Redim serverhandles(10) as long
Redim Errors(10) as long

numitems=1
serverhandles(0)=1
errors(0)=0
items.Remove NumItems,serverhandles,errors



RK

[eric33]

I try it.
I have an error but it is not the same.

In first case (my code) the error was incompatible type.

With your code the error was argument or procedure call incorrect.

[Mikesc]

If the DLL was written in C, you will have to send the first element of the array ByRef. C functions (like API) expect a pointer to the first element in an array, so pass the array ByRef as follows:
myArray(0).

[eric33]

Yes already try it. Didnt work.