JVCL Help:IJvDataProvider.Changing

 JVCL Help: IJvDataProvider.Changing Method

IJvDataProvider

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Summary

Will notify all registered notifiers a change is about to occur.

Pascal

 procedureChanging(ChangeReason: TDataProviderChangeReason; Source: IUnknown = nil);

Parameters

Parameters	Description
ChangeReason: TDataProviderChangeReason	Reason why the change notification is used.
Source: IUnknown = nil	Reference to an interface instance linked to the change. See the description of TDataProviderChangeReason to see the expected interface instances in each case.

Description

Call Changing to notify all registered change notifiers (IvDataProviderNotify instances registered by a call to RegisterChangeNotify) a change is about to occur.

See Also

IJvDataProvider.Changed, IJvDataProvider.RegisterChangeNotify, IJvDataProviderNotify

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