CM_Get_DevNode_PropertyW function

• 12/05/2018
• 2 minutes to read

The CM_Get_DevNode_Property function retrieves a device instance property.

Syntax

CMAPI CONFIGRET CM_Get_DevNode_PropertyW(
  DEVINST          dnDevInst,
  const DEVPROPKEY *PropertyKey,
  DEVPROPTYPE      *PropertyType,
  PBYTE            PropertyBuffer,
  PULONG           PropertyBufferSize,
  ULONG            ulFlags
);

Parameters

dnDevInst

Device instance handle that is bound to the local machine.

PropertyKey

Pointer to a DEVPROPKEY structure that represents the device property key of the requested device instance property.

PropertyType

Pointer to a DEVPROPTYPE-typed variable that receives the property-data-type identifier of the requested device instance property, where the property-data-type identifier is the bitwise OR between a base-data-type identifier and, if the base-data type is modified, a property-data-type modifier.

PropertyBuffer

Pointer to a buffer that receives the requested device instance property. CM_Get_DevNode_Property retrieves the requested property only if the buffer is large enough to hold all the property value data. The pointer can be NULL.

PropertyBufferSize

The size, in bytes, of the PropertyBuffer buffer. If PropertyBuffer is set to NULL, *PropertyBufferSize must be set to zero. As output, if the buffer is not large enough to hold all the property value data, CM_Get_DevNode_Property returns the size of the data, in bytes, in *PropertyBufferSize.

ulFlags

Reserved. Must be set to 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

CM_Get_DevNode_Property is part of the Unified Device Property Model.

Requirements

See also

SetupDiGetDeviceProperty