IIUnknownStrategy.QueryInterface(Void*, Guid, Void*) Method

Definition

Namespace:

System.Runtime.InteropServices.Marshalling

Assembly:

System.Runtime.InteropServices.dll

Performs a QueryInterface() for an IID on the unmanaged instance.

public:
 int QueryInterface(void* instancePtr, Guid ^ iid, [Runtime::InteropServices::Out] void* % ppObj);

public int QueryInterface(void* instancePtr, in Guid iid, out void* ppObj);

abstract member QueryInterface : nativeptr<unit> * Guid * Void* -> int

Parameters

instancePtr

Void*

A pointer representing the unmanaged instance.

iid

Guid

The IID (Interface ID) to query for.

ppObj

Void*

The resulting interface.

Returns

Int32

An HRESULT that represents the success of the operation.

See also

• QueryInterface(IntPtr, Guid, IntPtr)