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IOleLink::SetUpdateOptions

  • 项目

This method specifies how often a linked object should update its cached data.

HRESULT SetUpdateOptions(
  DWORD dwUpdateOpt
);

Parameters

  • dwUpdateOpt
    [in] Value that specifies how often a linked object should update its cached data. The legal values for dwUpdateOpt are taken from the enumeration OLEUPDATE.

Return Values

This method supports the standard return value E_INVALIDARG.

If the method succeeds, the return value is S_OK.

Remarks

The default update option is OLEUDPATE_ALWAYS. The linked object's implementation of the IPersistStorage::Save method saves the current update option.

If OLEUDPATE_ALWAYS is specified as the update option, the linked object updates the link's caches in the following situations:

  • When the update option is changed from manual to automatic, if the link source is running.
  • Whenever the linked object binds to the link source.
  • Whenever the link source is running and the linked object's IOleObject::Close, IPersistStorage::Save, or IAdviseSink::OnSave implementation is called.

For both manual and automatic links, the linked object updates the cache whenever the container application calls the IOleObject::Update or IOleLink::Update method.

Notes to Callers

Your container application should call IOleLink::SetUpdateOptions when the user changes the update option for a linked object.

The user selects the update option for a linked object using the Links dialog box. If you use the OleUIEditLinks function to display this dialog box, you must implement the IOleUILinkContainer interface. The dialog box calls your IOleUILinkContainer::SetLinkUpdateOptions method to specify the update option chosen by the user. Your implementation of this method should call the IOleLink::SetUpdateOptions method to pass the selected option to the linked object.

To determine whether the platform supports this interface, see Determining Supported COM APIs.

Requirements

OS Versions: Windows CE 3.0 and later.
Header: Oleidl.h, Oleidl.idl.
Link Library: Ole32.lib, Uuid.lib.

See Also

IAdviseSink::OnSave | IOleLink::Update | IOleObject::Close | IOleObject::Update | IPersistStorage::Save | OLEUPDATE

Last updated on Wednesday, April 13, 2005

© 2005 Microsoft Corporation. All rights reserved.