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IPortableDeviceContent::Delete

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IPortableDeviceContent::Delete

The Delete method deletes one or more objects from the device.

Syntax

  HRESULT Delete(
  const DWORD  dwOptions,
  IPortableDevicePropVariantCollection*  pObjectIDs,
  IPortableDevicePropVariantCollection**  ppResults
);

Parameters

dwOptions

[in]  One of the DELETE_OBJECT_OPTIONS enumerators.

pObjectIDs

[in]  Pointer to an IPortableDevicePropVariantCollection interface that holds one or more null-terminated strings (type VT_LPWSTR) specifying the object IDs of the objects to delete.

ppResults

[in, out]  Optional. On return, this parameter contains a collection of VT_ERROR values indicating the success or failure of the operation. The first element returned in ppResults corresponds to the first object in the pObjectIDs collection, the second element returned in ppResults corresponds to the second object in the pObjectIDs collection, and so on. This parameter can be NULL if the application is not concerned with the results.

Return Values

The method returns an HRESULT. Possible values include, but are not limited to, those in the following table. If any error value is returned, no objects were deleted on the device.

Return code Description
S_OK The method succeeded.
S_FALSE One or more objects were deleted, but at least one object could not be deleted. See ppFailedObjectIDs to learn which objects were not be deleted.
E_XXXXXXXX The driver did not delete any objects.
E_INVALIDARG An invalid value was specified for dwOptions.

Remarks

To see if recursive deletion is supported, call IPortableDeviceCapabilities::GetCommandOptions. If the retrieved IPortableDeviceValues interface contains a property value called WPD_OPTION_OBJECT_MANAGEMENT_RECURSIVE_DELETE_SUPPORTED with a boolVal value of True, the device supports recursive deletion.

The following table lists the possible return codes that may appear in the collection at which ppResults points.

Return code Description
S_OK The method succeeded.
E_ACCESSDENIED The application does not have permission to delete the object.
HRESULT_FROM_WIN32(ERROR_DIR_NOT_EMPTY) The specified folder or directory could not be deleted because it was not empty.
HRESULT_FROM_WIN32(ERROR_INVALID_OPERATION) The application specified PORTABLE_DEVICE_DELETE_NO_RECURSION, and the object has children.
HRESULT_FROM_WIN32(ERROR_NOT_FOUND) The object could not be deleted because it does not exist on the device.

Requirements

Header: Defined in PortableDeviceApi.h

Library: PortableDeviceGUIDs.lib

See Also

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