JVCL Help:IJvDataProviderNotify
JVCL Help: IJvDataProviderNotify Interface
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IJvDataProviderNotify
TJvDataConsumer
TJvProviderNotification
run\JvDataProviderIntf.pas
Summary
Callback interface to respond to changes at the provider.
Pascal
run\JvDataProviderIntf.pas
IJvDataProviderNotify = interface;
Description
IJvDataProviderNotify is a callback interface who's methods are called in response to changes at the provider.
An object that wishes to be notified of changes occurring at the provider will register this reference at the provider by calling the provider's RegisterChangeNotify method. If the object is no longer interested in changes at a provider (i.e. another provider is selected or the object is destroying), the UnregisterChangeNotify method should be called.
Note that it's perfectly legal to register the same change notification for multiple providers. In all cases a registered callback should eventually be unregistered before this object is destroyed. The only exception is when a provider is destroying or has been destroyed; in that case the callback is implicitly unregistered.
See Also
IJvDataProvider.RegisterChangeNotify
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