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

# TFindDialog.OnHelpClicked

Event handler signalled when the Help button is clicked on the dialog form.

## Declaration

Source position: dialogs.pp line 524

`published property TFindDialog.OnHelpClicked : TNotifyEvent read FOnHelpClicked write FOnHelpClicked;`

## Description

OnHelpClicked is a TNotifyEvent property with the event handler signalled to display context help for the find dialog. It can be used to locate, format, and display the help associated with the dialog. OnHelpClicked is signalled from the Help method (when assigned), and occurs when the Help button is clicked on the dialog form.

An application can implement and assign a handler routine to the property to respond to the event notification. The Sender argument contains the object instance for the event notification. It can be cast to TFindDialog (or TReplaceDialog for the descendent class) to access properties and methods specific to the dialog class instance. The handler routine is responsible for all aspects of the context help display.

Include frShowHelp in the Options property to enable the Help button on the dialog form.

## See also

TFindDialog.Help |  | Signals the OnHelpClicked event handler when the Help button on the dialog form is clicked.
TFindDialog.HelpClick |  | Implements the OnClick event handler for the Help button on the dialog.
TFindDialog.Options |  | Contains the find / replace options enabled for the dialog.
TFindOptions |  | Set type used to store TFindOption enumeration values.
TFindOption |  | A list of possible options which can be used in Find dialogs.