CMAPI CONFIGRET WINAPI CM_Get_Device_ID_List_Size_Ex( _Out_ PULONG pulLen, _In_opt_ PCTSTR pszFilter, _In_ ULONG ulFlags, _In_opt_ HMACHINE hMachine );
- pulLen [out]
Receives a value representing the required buffer size, in characters.
- pszFilter [in, optional]
Caller-supplied pointer to a character string specifying a subset of the machine's device instance identifiers, or NULL. See the following description of ulFlags.
- ulFlags [in]
One of the optional, caller-supplied bit flags that specify search filters. If no flags are specified, the function supplies the buffer size required to hold all instance identifiers for all device instances. For a list of bit flags, see the ulFlags description for CM_Get_Device_ID_List_Ex.
- 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.
If the operation succeeds, the function returns CR_SUCCESS. Otherwise, it returns one of the CR_-prefixed error codes defined in Cfgmgr32.h.
The CM_Get_Device_ID_List_Size_Ex function should be called to determine the buffer size required by CM_Get_Device_ID_List_Ex.
The size value supplied in the location pointed to by pulLen is guaranteed to represent a buffer size large enough to hold all device instance identifier strings and terminating NULLs. The supplied value might actually represent a buffer size that is larger than necessary, so don't assume the value represents the true length of the character strings that CM_Get_Device_ID_List_Ex will provide.
For information about device instance IDs, see Device Identification Strings.
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.
|Available in Microsoft Windows 2000 and later versions of Windows.|
Build date: 12/12/2013