RAD Studio VCL Reference
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Occurs when TWebContainerComponentHelper needs to access the value of DefaultWebComponents.
property OnGetDefaultComponentList: TGetComponentListEvent;
__property TGetComponentListEvent OnGetDefaultComponentList;
The component that uses TWebContainerComponentHelper assigns an event handler for OnGetDefaultComponentList when it creates the TWebContainerComponentHelper instance. This event handler provides the underlying read implementation of the DefaultWebComponents property.
If the component that uses TWebContainerComponentHelper does not provide an OnGetDefaultComponentList event handler, then the value of the DefaultWebComponents property is nil (Delphi) or NULL (C++).
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