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CM_Locate_DevNode function

The CM_Locate_DevNode function obtains a device instance handle to the device node that is associated with a specified device instance ID on the local machine.

Syntax

C++


CMAPI
CONFIGRET
WINAPI CM_Locate_DevNode(
  _Out_    PDEVINST    pdnDevInst,
  _In_opt_ DEVINSTID_W pDeviceID,
  _In_     ULONG       ulFlags
);

Parameters

pdnDevInst [out]

A pointer to a device instance handle that CM_Locate_DevNode retrieves. The retrieved handle is bound to the local machine.

pDeviceID [in, optional]

A pointer to a NULL-terminated string representing a device instance ID. If this value is NULL, or if it points to a zero-length string, the function retrieves a device instance handle to the device at the root of the device tree.

ulFlags [in]

A variable of ULONG type that supplies one of the following flag values that apply if the caller supplies a device instance identifier:

CM_LOCATE_DEVNODE_NORMAL: The function retrieves the device instance handle for the specified device only if the device is currently configured in the device tree.
CM_LOCATE_DEVNODE_PHANTOM: The function retrieves a device instance handle for the specified device if the device is currently configured in the device tree or the device is a nonpresent device that is not currently configured in the device tree.
CM_LOCATE_DEVNODE_CANCELREMOVE: The function retrieves a device instance handle for the specified device if the device is currently configured in the device tree or in the process of being removed from the device tree. If the device is in the process of being removed, the function cancels the removal of the device.
CM_LOCATE_DEVNODE_NOVALIDATION: Not used.

Return value

If the operation succeeds, CM_Locate_DevNode returns CR_SUCCESS. Otherwise, the function returns one of the CR_Xxx error codes that are defined in Cfgmgr32.h.

Remarks

For information about using device instance handles that are bound to the local machine, see CM_Get_Child.

Requirements

Target platform	Universal
Version	Available in Microsoft Windows 2000 and later versions of Windows.
Header	Cfgmgr32.h (include Cfgmgr32.h)
Library	Cfgmgr32.lib
DLL	CfgMgr32.dll
Unicode and ANSI names	CM_Locate_DevNodeW (Unicode) and CM_Locate_DevNodeA (ANSI)