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CM_Get_Res_Des_Data_Size function

The CM_Get_Res_Des_Data_Size function obtains the buffer size required to hold the information contained in a specified resource descriptor on the local machine.

Syntax


CMAPI
CONFIGRET
WINAPI CM_Get_Res_Des_Data_Size(
  _Out_  PULONG pulSize,
  _In_   RES_DES rdResDes,
  _In_   ULONG ulFlags
);

Parameters

pulSize [out]

Caller-supplied address of a location to receive the required buffer size.

rdResDes [in]

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

ulFlags [in]

Not used, must be zero.

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_Size 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.

Remarks

The returned size value represents the size of the appropriate resource structure (see CM_Add_Res_Des). If the resource descriptor resides in a resource requirements list, the returned size includes both the size of the resource structure and the space allocated for associated range arrays.

Requirements

Version

Available in Microsoft Windows 2000 and later versions of Windows.

Header

Cfgmgr32.h (include Cfgmgr32.h)

Library

Cfgmgr32.lib

See also

CM_Get_Res_Des_Data_Size_Ex

 

 

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