Vcl.ComCtrls.TTBNewButtonEvent
C++
typedef void __fastcall (__closure *TTBNewButtonEvent)(TToolBar* Sender, int Index, TToolButton* &Button);
Properties
| Type | Visibility | Source | Unit | Parent |
|---|---|---|---|---|
| typedef | public | Vcl.ComCtrls.hpp | Vcl.ComCtrls | Vcl.ComCtrls |
Description
TTBNewButtonEvent is the type of a tool button's TToolBar.OnCustomizeNewButton event handlers.
Sender is the toolbar to which the user is adding a button.
Index is the index in the Buttons property where the new button will appear. This should be assigned as the Index property of the new button.
Button returns a TToolButton object that the event handler creates and initializes. It is used to represent the new tool button in the Buttons property. If the event handler does not return a TToolButton object, the add operation fails.