CM_Modify_Res_Des function (cfgmgr32.h)
The CM_Modify_Res_Des function modifies a specified resource descriptor on the local machine.
Syntax
CMAPI CONFIGRET CM_Modify_Res_Des(
[out] PRES_DES prdResDes,
[in] RES_DES rdResDes,
[in] RESOURCEID ResourceID,
[in] PCVOID ResourceData,
[in] ULONG ResourceLen,
[in] ULONG ulFlags
);
Parameters
[out] prdResDes
Pointer to a location to receive a handle to the modified resource descriptor.
[in] rdResDes
Caller-supplied handle to the resource descriptor to be modified. This handle must have been previously obtained by calling one of the following functions:
CM_Modify_Res_Des
[in] ResourceID
Caller-supplied resource type identifier. This must be one of the ResType_-prefixed constants defined in Cfgmgr32.h.
[in] ResourceData
Caller-supplied pointer to a resource descriptor, which can be one of the structures listed under the CM_Add_Res_Des function's description of ResourceData.
[in] ResourceLen
Caller-supplied length of the structure pointed to by ResourceData.
[in] ulFlags
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.
Remarks
The caller-supplied resource descriptor data replaces the existing data. The values specified for ResourceID and ResourceLen do not have to match the existing resource descriptor.
If the value specified for ResourceID is ResType_ClassSpecific, then the specified resource descriptor must be the last one associated with the logical configuration.
Callers of CM_Modify_Res_Des must call CM_Free_Res_Des_Handle to deallocate the resource descriptor handle, after it is no longer needed.
Callers of this function must have SeLoadDriverPrivilege. (Privileges are described in the Microsoft Windows SDK documentation.)
Requirements
Requirement | Value |
---|---|
Minimum supported client | Available in Microsoft Windows 2000 and later versions of Windows. |
Target Platform | Desktop |
Header | cfgmgr32.h (include Cfgmgr32.h) |
Library | Cfgmgr32.lib |
DLL | Cfgmgr32.dll |