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

# TToolButton.OnArrowClick

Event handler signalled when the drop-down indicator for a tool button is clicked.

## Declaration

Source position: comctrls.pp line 2220

`published property TToolButton.OnArrowClick : TNotifyEvent read FOnArrowClick write FOnArrowClick;`

## Description

OnArrowClick is a TNotifyEvent property with the event handler signalled when the drop-down indicator is clicked on a tool button using a drop-down Style.

OnArrowClick is signalled from the ArrowClick method (when assigned), and occurs when the left mouse button was clicked on the drop-down indicator. It is not executed if the DropDownMenu has already been displayed.

Use OnClick (or OnExecute in the Action) for the event handler signalled when the tool button was clicked.

## See also

TToolButton.Style |  | Determines the display style for the tool button.
TToolButton.ArrowClick |  | Signals the OnArrowClick event handler for the tool button.
TToolButton.Click |  | Signals OnClick and/or executes the ActionLink when the control has been clicked.
TToolButton.DropDownMenu |  | The drop-down menu displayed when the button is pressed.
OnClick |  | Notification handler for mouse clicks.