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AnswerRe: First real C# program by C++ developer Pin
Roger Wright12-Sep-12 20:21
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Richard MacCutchan12-Sep-12 22:26
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AnswerRe: First real C# program by C++ developer Pin
Alan Balkany13-Sep-12 11:10
Alan Balkany13-Sep-12 11:10 
Your C# program can use the same DLL as the C++ program.

Using a DLL from C# is even easier than using it from C++: Just use the DllImport directive:

http://msdn.microsoft.com/en-us/library/aa984739%28v=vs.71%29.aspx[^]

The above example doesn't show the mangled C++ name you need in a DllImport directive, so here's a working example from my code:

C#
[DllImport("vdrdll.dll", CallingConvention = CallingConvention.Cdecl, EntryPoint = @"?setNumObjects@@YAXH@Z")]
static extern void setNumObjects(int num);


You get the mangled name from the *.exp file that's created when you compile the C++ DLL. The mangled name always starts with '?' and ends with 'Z'.

The second line is just the standard function signature.

Your C# program needs:

C#
using System.Runtime.InteropServices;


at the top so it recognizes the DllImport keyword.
"Microsoft -- Adding unnecessary complexity to your work since 1987!"

AnswerRe: First real C# program by C++ developer Pin
Alan Balkany13-Sep-12 11:44
Alan Balkany13-Sep-12 11:44 
QuestionDynamic TimeSlots Pin
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QuestionSieve of Eratosthenes Pin
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