How to invoke this method in C# ( it's an method in WD_SDK.dll, it's C++ ) ?
WD_RegisterVideoPreviewCB(HANDLE hChannel, PVOID pContext, VideoCaptureCB_Ptr pCB);
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user2877989
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According to [this](http://social.msdn.microsoft.com/Forums/vstudio/en-US/e232f033-704e-4ee9-aa4e-e7d2a8491207/c-program-to-call-c-class-in-dll?forum=csharpgeneral), it's not possible but he also suggested a work-around. – Nathan Mar 19 '14 at 15:57
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@Nath, what do you mean? That function neither takes nor returns STL containers. – Frédéric Hamidi Mar 19 '14 at 15:59
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@FrédéricHamidi I guess I missed that. Thanks for the correction. – Nathan Mar 19 '14 at 16:00
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Most likely those would all be `IntPtr`, but you really need to check the API. – Rotem Mar 19 '14 at 16:56
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use this
[DllImport("yourdll.dll", EntryPoint = "WD_RegisterVideoPreviewCB")]
public static extern void (HANDLE hChannel, PVOID pContext, VideoCaptureCB_Ptr pCB);
user3088023
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VS show an error "The type or namespace name 'PVOID' could not be found" – user2877989 Mar 19 '14 at 16:47
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