I'm new to VB/VBA and calling functions in external DLLs from VB/VBA.

If I declare a variable in VBA, assign a value and then call a C++
function in a DLL, is any type checking down between VBA and the C++
function? So if I declare a Long identifier in VBA and then call a
function that expects an enum type in C++, will the call be flagged
for type mismatch?

Thanks.

Les