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NF:cfgmgr32.CM_Get_Device_ID_List_Size_ExW |
CM_Get_Device_ID_List_Size_ExW function (cfgmgr32.h) |
The CM_Get_Device_ID_List_Size_Ex function retrieves the buffer size required to hold a list of device instance IDs for a local or a remote machine's device instances. (Unicode) |
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devinst\cm_get_device_id_list_size_ex.htm |
devinst |
ed89ff61-c92b-4841-9038-3c26d8594aee |
12/05/2018 |
CM_Get_Device_ID_List_Size_Ex, CM_Get_Device_ID_List_Size_Ex function [Device and Driver Installation], CM_Get_Device_ID_List_Size_ExW, cfgmgr32/CM_Get_Device_ID_List_Size_Ex, cfgmgr32/CM_Get_Device_ID_List_Size_ExW, cfgmgrfn_2e9a6787-1578-48c1-9f3b-5d1ee266f9ac.xml, devinst.cm_get_device_id_list_size_ex |
cfgmgr32.h |
Cfgmgr32.h |
Desktop |
Available in Microsoft Windows 2000 and later versions of Windows. |
CM_Get_Device_ID_List_Size_ExW (Unicode) |
Cfgmgr32.lib |
Windows |
19H1 |
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[Beginning with Windows 8 and Windows Server 2012, this function has been deprecated. Please use CM_Get_Device_ID_List_Size instead.]
The CM_Get_Device_ID_List_Size_Ex function retrieves the buffer size required to hold a list of device instance IDs for a local or a remote machine's device instances.
Receives a value representing the required buffer size, in characters.
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.
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.
Caller-supplied machine handle, obtained from a previous call to CM_Connect_Machine.
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.