Passing Structures from C++ to a VB .NET DLL

[gstarr]

I'm having trouble getting the correct syntax for passing a structure from C++ to VB .NET.

I have a VB .Net DLL program with the following code:

    Public Structure testParams
        Public iFirst As Integer
        Public iSecond As Integer
    End Structure
 
    Public Class clsKpdUI
        Public Function ShowForm(ByVal Param1 As testParams) As Integer
            ' Code
        End Function
    End Class
 

I have C++ program with the following code:

    struct testParams {
        int iFirst;
        int iSecond;
    };
 
    kpdUI::clsKpdUI myUI;
    testParams tp;
    tp.iFirst = 4;
    tp.iSecond = 3;
    myintR = myUI.ShowForm3(tp);
 

When I try to compile the C++ code, I get the following Error:
Error 1 error C2664: 'kpdUI::clsKpdUI::ShowForm' : cannot convert parameter 1 from 'testParams' to 'kpdUI::testParams' c:\test\Form1.h 133 TestKpdUIcpp

How do I correct this error?

Thank,
Gary

[weaknessforcats]

You might read up in MSDN about VB/C++ interoperability. There is sample code there for how to do this.

[gstarr]

Thanks for the response. Someone else pointed out what I was doing wrong. Turns out that I need to reference the Structure that is defined in VB when I'm declaring the variable in C++

instead of this in C++
testParams tp;
I needed to do this:
kpdUI::testParams tp;

Now it works like a champ.

Thanks again... Gary