Re: blocking window manager from closing window

[John Vetterli <jvetterli linux ca>]

On Thu, 20 Jan 2005 19:10:36 +0000
marcodev comcast net wrote:
> I have the following destroy signal connected to the top level window
> of my app: g_signal_connect(G_OBJECT(top_level_window), "destroy",
>                            (GCallback) destroy_window, NULL);
> The callback then looks like this:
> void
> destroy                                (gpointer         user_data)
> {
>    // Gracefully exit the program
>    GET_WINDOW_SIZE(top_level_window, &WIDTH,
>                                        &HEIGHT);
>    GET_PANE_POSITIONS(top_level_window, &V_PANE_POS,
>                                        &H_PANE_POS);
> ..........
>    gtk_main_quit();
> }
> The problem is that if the window is closed by clicking the window
> manager's X button then the window closes before the destroy signal is
> emmited and the calls to GET_WINDOW_SIZE() and GET_PANE_POSITIONS()
> can't get the parameters for the window. Is there a way to slow down
> or stop the WM momentarily?

Try connecting to the top-level window's "delete_event" signal instead;
this signal is emitted when the WM 'X' button is clicked, but before the
window is removed from the screen.

For more info, see the gtk tutorial:
http://www.gtk.org/tutorial/ch-gettingstarted.html

HTH
JV
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