Vcl.Tabs.TTabSet.OnChange
Delphi
property OnChange: TTabChangeEvent read FOnChange write FOnChange;
C++
__property TTabChangeEvent OnChange = {read=FOnChange, write=FOnChange};
Properties
| Type | Visibility | Source | Unit | Parent |
|---|---|---|---|---|
| event | published | Vcl.Tabs.pas Vcl.Tabs.hpp |
Vcl.Tabs | TTabSet |
Description
Occurs just before a new tab is selected.
OnChange is an event handler of type Vcl.Tabs.TTabChangeEvent. See TTabChangeEvent for a description of the parameters. For example, OnChange occurs just as the TabIndex value is about to change. To prevent the TabIndex value from changing, set AllowChange to false in your OnChange event handler.