Why (LoadTypeLibEx failed : : Error loading type library/DLL. (Exception from HRESULT

Hello,

I am Loading type library from C++/CLI with following lines of code.

[DllImportAttribute("oleaut32.dll", SetLastError = true, CharSet = CharSet::Unicode, PreserveSig=false)]

static void LoadTypeLibEx( String^ strTypeLibName, RegKind regkind,[MarshalAs(UnmanagedType::Interface)] interior_ptr typeLib );

Object^ oTypeLib;
LoadTypeLibEx( strSubject,RegKind::RegKind_None, &oTypeLib);

It again and again giving me same exception, all I have registered type library with regsrv32, placed in current directory and given full qualified path but still its giving me same exception. Any way around?

Regards
Usman

Why do you need PInvoke in C++/CLI? Call LoadTypeLibEx directly, as in good old C++. C++/CLI allows to write unmanaged code in any place.

I have done almost whole code of interop services using this managed syntax and declared every where objects of TypeLib and TypeInfo with managed type i.e ^.

LoadTypeLib is native and requires all native syntax. So ITypeLib^ won't work on this. Can you please tell me what's wrong with PInvoke calling code of LoadTypeLib.

I am getting issues of converting pin_ptr to managed and managed to pin_ptr and usage as whole of managed types in the code.