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com-ptr-t-getactiveobject.md

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description title ms.date f1_keywords helpviewer_keywords ms.assetid
Learn more about: _com_ptr_t::GetActiveObject
_com_ptr_t::GetActiveObject
11/04/2016
_com_ptr_t::GetActiveObject
GetActiveObject method [C++]
2fa94853-0410-4620-91f2-136dae923f9f

_com_ptr_t::GetActiveObject

Microsoft Specific

Attaches to an existing instance of an object given a CLSID or ProgID.

Syntax

HRESULT GetActiveObject(
   const CLSID& rclsid
) throw( );
HRESULT GetActiveObject(
   LPCWSTR clsidString
) throw( );
HRESULT GetActiveObject(
   LPCSTR clsidStringA
) throw( );

Parameters

rclsid
The CLSID of an object.

clsidString
A Unicode string that holds either a CLSID (starting with "{") or a ProgID.

clsidStringA
A multibyte string, using the ANSI code page, that holds either a CLSID (starting with "{") or a ProgID.

Remarks

These member functions call GetActiveObject to retrieve a pointer to a running object that has been registered with OLE and then queries for this smart pointer's interface type. The resulting pointer is then encapsulated within this _com_ptr_t object. Release is called to decrement the reference count for the previously encapsulated pointer. This routine returns the HRESULT to indicate success or failure.

  • GetActiveObject( rclsid ) Attaches to an existing instance of an object given a CLSID.

  • GetActiveObject( clsidString ) Attaches to an existing instance of an object given a Unicode string that holds either a CLSID (starting with "{") or a ProgID.

  • GetActiveObject( clsidStringA ) Attaches to an existing instance of an object given a multibyte character string that holds either a CLSID (starting with "{") or a ProgID. Calls MultiByteToWideChar, which assumes that the string is in the ANSI code page rather than an OEM code page.

END Microsoft Specific

See also

_com_ptr_t Class