JVCL Help:TJvCustomItemViewer.OnItemChanging

 JVCL Help: TJvCustomItemViewer.OnItemChanging Event

TJvCustomItemViewer

► TJvCustomItemViewer Events

[+] TJvCustomItemViewer Events

► TJvCustomItemViewer Methods

[+] TJvCustomItemViewer Methods

► TJvCustomItemViewer Properties

[+] TJvCustomItemViewer Properties

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Summary

Called when an item is about to change.

Pascal

 TJvViewerItemChangingEvent = procedure (Sender: TObject; Item: TJvViewerItem; var Allow: Boolean) ofobject;
propertyOnItemChanging: TJvViewerItemChangingEvent;

Parameters

Parameters	Description
Allow	Set to false to disallow the change. Default value is true.
Item	The item that is about to change.
Sender	The object that triggered the event.

Description

Write an event handler for the OnItemChanging event to take specific action when an item in the Items array is about to change. For example, you might want to prohibit changes to items under certain circumstances.
To disallow an item to change, set the Allow parameter to false. By default, Allow is true.

See Also

TJvCustomItemViewer.OnItemChanged

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