How to write a managed wrapper class for a unmanaged Dialog class in VC++?

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2yuexue - 23 Aug 2006 21:02 GMT

I have a dialog application that is created using VC++ 6.0 and a Windows form application using .NET 2003. I'd like to access the Dialog from the form. I have tried every thing I know to write a wrapper class for the dialog class but failed. Would someone here help me out on this?

Thanks

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William DePalo [MVP VC++] - 23 Aug 2006 21:15 GMT

>I have a dialog application that is created using
> VC++ 6.0 and a Windows form application using
> .NET 2003. I'd like to access the Dialog from the
> form. I have tried every thing I know to write a
> wrapper class for the dialog class but failed.

Well, you don't say what you tried and how it failed.

> Would someone here help me out on this?

Assuming that your resides in a DLL and exposes a flat interface, you have
at least three ways to go:

1) Use Platform/Invole aka P/Invoke aka P/Invoke to call from the managed
code to unmanaged code

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/cpguide/html/cp
conplatforminvokeexamples.asp

2) Use "It just works" aka IJW aka C++ interop in place of Platform/Invoke

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/vcmxspec/html/v
cmg_PlatformInvocationServices.asp

3) Wrap up the native code into a COM object and use the framework's support
for COm

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/cpguide/html/cp
conadvancedcominterop.asp

Regards,
Will

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How to write a managed wrapper class for a unmanaged Dialog class in VC++?

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