CM_Get_Parent function (cfgmgr32.h)

Article
05/24/2022

The CM_Get_Parent function obtains a device instance handle to the parent node of a specified device node (devnode) in the local machine's device tree.

Note

In Windows Vista and later versions of Windows, the unified device property model uses the DEVPKEY_Device_Parent property key to represent device parent. See Retrieving Device Relations for details.

Syntax

CMAPI CONFIGRET CM_Get_Parent(
  [out] PDEVINST pdnDevInst,
  [in]  DEVINST  dnDevInst,
  [in]  ULONG    ulFlags
);

Parameters

[out] pdnDevInst

Caller-supplied pointer to the device instance handle to the parent node that this function retrieves. The retrieved handle is bound to the local machine.

[in] dnDevInst

Caller-supplied device instance handle that is bound to the local machine.

[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

For information about using a device instance handle that is bound to the local machine, see CM_Get_Child.

Requirements

Requirement	Value
Minimum supported client	Available in Microsoft Windows 2000 and later versions of Windows.
Target Platform	Universal
Header	cfgmgr32.h (include Cfgmgr32.h)
Library	Cfgmgr32.lib; OneCoreUAP.lib on Windows 10
DLL	CfgMgr32.dll