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passing data to a dll

I have a dll written in VC6 that I need to send arguments to from a call
in VB.NET. I'm having trouble passing data arguments between them.

So far I've only tried passing strings, and all I get on the receiving
end is the first character of each parameter.

The function definition in the dll is like this:

extern "C" BOOL PASCAL EXPORT MyFunction(char *param1, char *param2)

I define the function in VB as:

Public Declare Auto Function MyFunction Lib "mydll.dll" _
(ByVal arg1 As String, ByVal arg2 As String) As Integer

Ultimately I'll need to pass a number of strings, signed integers, and
unsigned long data. What do I need to do?

Thanks.
Nov 21 '05 #1
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