Marshal.QueryInterface Method
For apps that target Windows Phone OS 7.0 and 7.1, do not use any members of this type in your app. If you do, your code will throw a MethodAccessException. This type is security-critical, which restricts it to internal use by the .NET Framework for Windows Phone class library.
Assembly: mscorlib (in mscorlib.dll)
[SECURITY CRITICAL]
Namespace:
System.Runtime.InteropServices[ This article is for Windows Phone 8 developers. If you’re developing for Windows 10, see the latest documentation. ]
Requests a pointer to a specified interface from a COM object.
Assembly: mscorlib (in mscorlib.dll)
[SecurityCriticalAttribute] public static int QueryInterface( IntPtr pUnk, ref Guid iid, out IntPtr ppv )
Parameters
- pUnk
- Type: System.IntPtr
The interface to be queried.
- iid
- Type:
System.Guid
%
A Guid, passed by reference, that is the interface identifier (IID) of the requested interface.
- ppv
- Type:
System.IntPtr
%
When this method returns, contains a reference to the returned interface.
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