Reference from VB6 Function

[Lou]

I need to have a C# funtion that has one parameter which is a VB6 function
pointer.
How do i declare the variable for the function pointer in C#?
I am using ptrFunction in the example below.
What do i replace that with?
I need to call back into the vb6 app.


Example:
C# Function
public void GiveMeAReference{ptrfunction myFunctionPointer){

}

vb6 Function:
Private Sub Command1_Click()
myDLL.GiveMeAReference AddressOf myFunction
End Sub

-Lou

 

[Lou]

Oh yea, once i have my function ptr, how do i call back to VB6 with it?

 

[Mattias Sjögren]

Lou,

I need to have a C# funtion that has one parameter which is a VB6 function
pointer.

Why do you (think you) need to use function pointers directly? Why not
use a COM interface for callbacks?



Mattias

 

[Lou]

I could not get Events to work. I created a Comm interface for my C# dll.
The events in C# showed up correctly in the C# object browser, but in VB6
they did not show up as Events in the object browser(Ligthning symbols) but
as methods??
so I figured I would pass a refernce to my callback function in VB6??

-Lou

 

[Mattias Sjögren]

so I figured I would pass a refernce to my callback function in VB6??

Events should work, but you don't necessarily have to use them. You
could just define an interface that the C# class implements and that
the VB6 code uses for callbacks.



Mattias