SetupDiGetDeviceInterfacePropertyW function (setupapi.h)

The SetupDiGetDeviceInterfaceProperty function retrieves a device property that is set for a device interface.


WINSETUPAPI BOOL SetupDiGetDeviceInterfacePropertyW(
  [in]            HDEVINFO                  DeviceInfoSet,
  [in]            PSP_DEVICE_INTERFACE_DATA DeviceInterfaceData,
  [in]            const DEVPROPKEY          *PropertyKey,
  [out]           DEVPROPTYPE               *PropertyType,
  [out]           PBYTE                     PropertyBuffer,
  [in]            DWORD                     PropertyBufferSize,
  [out, optional] PDWORD                    RequiredSize,
  [in]            DWORD                     Flags


[in] DeviceInfoSet

A handle to a device information set that contains a device interface for which to retrieve a device interface property.

[in] DeviceInterfaceData

A pointer to an SP_DEVICE_INTERFACE_DATA structure that represents the device interface for which to retrieve a device interface property.

[in] PropertyKey

A pointer to a DEVPROPKEY structure that represents the device interface property key of the device interface property to retrieve.

[out] PropertyType

A pointer to a DEVPROPTYPE-typed variable that receives the property-data-type identifier of the requested device interface property. The property-data-type identifier is a bitwise OR between a base-data-type identifier and, if the base-data type is modified, a property-data-type modifier.

[out] PropertyBuffer

A pointer to a buffer that receives the requested device interface property. SetupDiGetDeviceInterfaceProperty retrieves the requested property only if the buffer is large enough to hold all the property value data. The pointer can be NULL. If the pointer is set to NULL and RequiredSize is supplied, SetupDiGetDeviceInterfaceProperty returns the size of the property, in bytes, in *RequiredSize.

[in] PropertyBufferSize

The size, in bytes, of the PropertyBuffer buffer. If PropertyBuffer is set to NULL, PropertyBufferSize must be set to zero.

[out, optional] RequiredSize

A pointer to a DWORD-typed variable that receives the size, in bytes, of either the device interface property if the property is retrieved or the required buffer size, if the buffer is not large enough. This pointer can be set to NULL.

[in] Flags

This parameter must be set to zero.

Return value

SetupDiGetDeviceInterfaceProperty returns TRUE if it is successful. Otherwise, it returns FALSE, and the logged error can be retrieved by calling GetLastError.

The following table includes some of the more common error codes that this function might log. Other error codes can be set by the device installer functions that are called by this API.

Return code Description
The value of Flags is not zero.
The device information set that is specified by DevInfoSet is not valid.
A supplied parameter is not valid. One possibility is that the device interface that is specified by DeviceInterfaceData is not valid.
The property key that is supplied by PropertyKey is not valid.
An unspecified internal data value was not valid.
A user buffer is not valid. One possibility is that PropertyBuffer is NULL, and PropertyBufferSize is not zero.
The device interface that is specified by DeviceInterfaceData does not exist.
The PropertyBuffer buffer is not large enough to hold the property value, or an internal data buffer that was passed to a system call was too small.
There was not enough system memory available to complete the operation.
The requested device property does not exist.
The caller does not have Administrator privileges.


SetupDiGetDeviceInterfaceProperty is part of the unified device property model.

SetupAPI supports only a Unicode version of SetupDiGetDeviceInterfaceProperty.

A caller of SetupDiGetDeviceInterfaceProperty must be a member of the Administrators group to set a device interface property.

To obtain the device property keys that represent the device properties that are set for a device interface, call SetupDiGetDeviceInterfacePropertyKeys.

To set a device interface property, call SetupDiSetDeviceInterfaceProperty.


Minimum supported client Available in Windows Vista and later versions of Windows.
Target Platform DesktopFor universal, call CM_Get_Device_Interface_Property
Header setupapi.h (include Setupapi.h)
Library Setupapi.lib

See also