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CM_Get_Res_Des_Data_Ex function

The CM_Get_Res_Des_Data_Ex function retrieves the information stored in a resource descriptor on a local or a remote machine.


WINAPI CM_Get_Res_Des_Data_Ex(
  _In_     RES_DES  rdResDes,
  _Out_    PVOID    Buffer,
  _In_     ULONG    BufferLen,
  _In_     ULONG    ulFlags,
  _In_opt_ HMACHINE hMachine


rdResDes [in]

Caller-supplied handle to a resource descriptor, obtained by a previous call to CM_Get_Next_Res_Des_Ex.

Buffer [out]

Address of a buffer to receive the contents of a resource descriptor. The required buffer size should be obtained by calling CM_Get_Res_Des_Data_Size_Ex.

BufferLen [in]

Caller-supplied length of the buffer specified by Buffer.

ulFlags [in]

Not used, must be zero.

hMachine [in, optional]

Caller-supplied machine handle, obtained from a previous call to CM_Connect_Machine.

Note  Using this function to access remote machines is not supported beginning with Windows 8 and Windows Server 2012, as this functionality has been removed.

Return value

If the operation succeeds, the function returns CR_SUCCESS. Otherwise, it returns one of the CR_-prefixed error codes defined in Cfgmgr32.h.

Note  Starting with Windows 8, CM_Get_Res_Des_Data_Ex returns CR_CALL_NOT_IMPLEMENTED when used in a Wow64 scenario. To request information about the hardware resources on a local machine it is necessary implement an architecture-native version of the application using the hardware resource APIs. For example: An AMD64 application for AMD64 systems.


Information returned in the buffer supplied by Buffer will be formatted as one of the resource type structures listed in the description of CM_Add_Res_Des_Ex, based on the resource type that was specified when CM_Get_Next_Res_Des_Ex was called to obtain the resource descriptor handle.

Functionality to access remote machines has been removed in Windows 8 and Windows Server 2012 and later operating systems thus you cannot access remote machines when running on these versions of Windows.


Target platform



Available in Microsoft Windows 2000 and later versions of Windows.


Cfgmgr32.h (include Cfgmgr32.h)





See also




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