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

# TCalculatorDialog.OnDisplayChange

OnDisplayChange - event handler for any change in the calculator display.

## Declaration

Source position: extdlgs.pas line 182

`published property TCalculatorDialog.OnDisplayChange : TNotifyEvent read FOnDisplayChange write FOnDisplayChange;`

## Description

OnDisplayChange is a TNotifyEvent property used as the event handler signalled when the display value for the calculator dialog is changed. OnDisplayChange is signalled from the DisplayChanged method which is assigned as the OnDisplayChange event handler in DlgForm.

## See also

TCalculatorDialog.Execute |  | Creates, configures, and displays the form for the calculator dialog.
TCalculatorDialog.DisplayChange |  | Implements the event handler signalled when the calculator display has been changed on the dialog form.
TCalculatorForm.OnDisplayChange |  | Event handler signalled when the calculator display has been changed.
TNotifyEvent