[Overview][Constants][Types][Classes][Procedures and functions][Variables][Index] | Reference for unit 'ActnList' (#lcl)

# TCustomActionList.Change

Performs action needed when the action list or one of its Actions has been changed.

## Declaration

Source position: actnlist.pas line 93

`protected procedure TCustomActionList.Change; virtual;`

## Description

Change signals the OnChange event handler (when assigned) to perform user-specified operations for the action list. Change also visits each of the Actions in the action list, and calls its Change method to signal the OnChange event handler supplied at the action level. It calls the OwnerFormDesignerModified routine at design-time to notify the form designer of the change to the action list.

Change is called when a new TCustomImageList value is assigned to the Images property in the action list.

## See also

OwnerFormDesignerModified |  | Executes the routine which notifies the form designer when the specified component has been changed.