Question

I’m creating a DLL in Delphi that must have the following C++ structure.

DWORD Load(char* &Test);

So the test must be a reference parameter. I tried ‘var’ and ‘out’ in Deplhi, but I get an error in my C++ application that uses the DLL.

Answer 1

A literal translation of that code is this:

function Load(var Test: PAnsiChar): DWord; cdecl;

Notice the calling convention. If you’re missing that, then Delphi places the first parameter in a register, but the C++ code expects it on the top of the stack.