To: c_bauer at informatik.uni-kl.de
Cc: lablgtk at kaba.or.jp
Subject: Re: button_press events in drawing_area
In-Reply-To: <m3y91rolsk.fsf at diebuntekuh.de>
References: <m3y91rolsk.fsf at diebuntekuh.de>
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Message-Id: <20030516162630S.garrigue at kurims.kyoto-u.ac.jp>
Date: Fri, 16 May 2003 16:26:30 +0900
From: Jacques Garrigue <garrigue at kurims.kyoto-u.ac.jp>
Lines: 18

From: Christoph Bauer <c_bauer at informatik.uni-kl.de>

> my application (lablgtk2) doesn't get a button_press event.
> 
> (It draws a chess board on the drawing_area.  Then I want to move the
> pieces.)  So I added a simple test to determine how to catch the events.
> 
>   ignore( area#event#connect#button_press ~callback:(fun key -> print_string "bing"; print_newline (); true))
> 
> But my callback routine isn't called.

It is a traditional quirk of Gtk: you must declare what events you
want to get, outside of default ones. I suppose than a drawing area
doesn't get button press events by default.

   area#event#add [`BUTTON_PRESS]

Jacques