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QuestionInterop question [modified] Pin
buerklma3-Apr-07 20:15
buerklma3-Apr-07 20:15 
Hallo NG,

I have a VB6 ActiveX DLL which is calling a Method of my C# Application. One Parameter of this method is defined as Object.
void Foo (ref Object obj)
In special cases the parameter obj contains an two dimensional array of integers. I need to change the values in this array before I return the control to the VB6 DLL.
The problem is that I can change the values in the array in the C# part, but when the control comes back to the VB6 Dll the array contains just values of zero.
I think it is a marshalling issue, but I don`t know how to solve it.
Maybe somebody has an idea.

Here is the Interop Assambly part:
.custom instance void [mscorlib]System.Runtime.InteropServices.TypeLibTypeAttribute::.ctor(int16) = ( 01 00 D0 10 00 00 )
.method public hidebysig newslot abstract virtual
instance void gNotify([in] class srvUIConst.UIInterfaceClass marshal( interface ) oNotify,
[in] int32 lMSG,
[in][out] int32& lParam,
[in][out][opt] object& marshal( struct) vParam) runtime managed

The parameter I was writing about is the last parameter (vParam).

Thanks in advance.

Regards Martin


-- modified at 3:43 Thursday 5th April, 2007
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