ComUtilities.QueryInterfaceIUnknown Method

Retrieves the IUnknown for the specified managed or COM object.

Namespace:  Microsoft.VisualStudio.Shell
Assembly:  Microsoft.VisualStudio.Shell.12.0 (in Microsoft.VisualStudio.Shell.12.0.dll)

Syntax

'Declaration
Public Shared Function QueryInterfaceIUnknown ( _
    objectToQuery As Object _
) As IntPtr

public static IntPtr QueryInterfaceIUnknown(
    Object objectToQuery
)

public:
static IntPtr QueryInterfaceIUnknown(
    Object^ objectToQuery
)

static member QueryInterfaceIUnknown : 
        objectToQuery:Object -> IntPtr

public static function QueryInterfaceIUnknown(
    objectToQuery : Object
) : IntPtr

Parameters

• objectToQuery
  Type: Object

  Managed or COM object.

Return Value

Type: IntPtr
Pointer to the IUnknown interface of the object.

Remarks

Release should be called on the returned value when the interface pointer is no longer needed.

.NET Framework Security

• Full trust for the immediate caller. This member cannot be used by partially trusted code. For more information, see Using Libraries from Partially Trusted Code.

See Also

Reference

ComUtilities Class

Microsoft.VisualStudio.Shell Namespace