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

# TCustomComboBox.Change

Signals the OnChange event handler when the value for the control is changed.

## Declaration

Source position: stdctrls.pp line 358

`protected procedure TCustomComboBox.Change; virtual;`

## Description

Change is a procedure used to perform actions needed when the value for the control is changed. Change is called from the LMChanged method used to process the change notification message. Change calls the Changed method, inherited from TControl, to Perform the control message. The OnChange event handler is signalled (when assigned).

## See also

TCustomComboBox.LMChanged |  | Handles the LM_CHANGED message for the control.
TCustomComboBox.OnChange |  | Event handler signalled for user changes to the text in the edit box.
TControl.Changed |  | Performs actions needed when the value for the control has been changed.
TControl.Perform |  | Calls a message handler directly, bypassing the message queue.