Re: (no subject)

[Gustavo Cipriano Mota Sousa <gustavomota inf ufg br>]

Thanks you for the help! Although i am using Gtk+ 1.2, and this function is for
2.0, your hint let me to look at the GtkBin class, and find way to do it:

box = GTK_WIDGET(GTK_BIN(data)->child));
gtk_container_remove(GTK_CONTAINER(data), box);

i dont know if it's the best and correct way to do it, but it's working now.
Some error codes are appearing on the terminal though.
Citando Peter Krueger <pkrueger appss de>:

> On Fri, 16 Apr 2004, Gustavo Cipriano Mota Sousa wrote:
> > I am writting an app that uses a clist, and a frame, and, when the clist is
> > selected, information about that row should be showed in the frame.
> >
> > I used the following code to connect the signal:
> >
> > frame = gtk_frame_new("Result");
> > gtk_signal_connect(GTK_OBJECT(clist), "select_row",
> >     GTK_SIGNAL_FUNC(callback_select_row), (gpointer) frame);
> >
> > and this one as a callback:
> > void callback_select_row(GtkWidget *widget, gint row, gint column,
> >                     GdkEventButton *event, gpointer data) {
> >     GtkWidget *box, *label;
> >     gint i;
> >
> >     /* code for reading data */
> >     box = gtk_vbox_new(TRUE, 1);
> >     for (i = 0; i < x; i++) {
> >         sprintf(str, "%s: %s", field[i].name, row[i]);
> >         label = gtk_label_new(str);
> >         gtk_box_pack_start(GTK_BOX(box), label, TRUE, TRUE, 0);
> >         gtk_widget_show(label);
> >     }
> >     gtk_container_add(GTK_CONTAINER(data), box);
> >     gtk_widget_show(box);
> >
> > It works perfectly when i select a line from the list for the first time,
> but
> > when i select another one, it keeps showing the data, related to the first
> > selected row. I need someway to clear, the contents of the frame, or box,
> > before adding new things. I am new at gtk and i have no clue how to achieve
> it.
> Hello Gustavo!
> You can use the function
>   GtkWidget* gtk_bin_get_child(GtkBin *bin);
> with your frame as argument to get the vbox from your last call. If
> there is a child (the function returns something != NULL), remove it from
> the frame with:
>   void gtk_container_remove(GtkContainer *container, GtkWidget *widget);
> This will delete the old widgets of the box and the labels in it.
>
> Regards,
>                        Peter
> --
> ====================================================================
> Peter Krüger
>
> applied software solutions (appss) GmbH
> Sandtorstr. 23
> D-39106 Magdeburg
> Germany
>
> Phone:  +49-(0)391-54486-19388
> Fax:    +49-(0)391-54486-19222
> email:  krueger appss de
> URL:    http://www.appss.de
>
> Managing Director: Uwe Hess, Dietmar Schäfer
> Register: HRB12386, AG Mageburg
>
> "Virtual business becomes reality!"
>
> This e-mail may contain confidential and/or privileged information. If
> you are not the intended recipient (or have received this e-mail in
> error) please notify the sender immediately and destroy this e-mail. Any
> unauthorised copying, disclosure or distribution of the material in this
> e-mail is strictly forbidden.
> ====================================================================


------ BEGIN GEEK CODE BLOCK-----
Version: 3.1
GU d-(?) s+:- a--- C++(+++)>$ UBL++>$ P+ L++>$ !E W++ N? o? K? w- O- M- V- PS
PE+(++) Y? PGP- t S? X? R+ tv- b+ DI? D- G++ e- h! r- y?
------ END GEEK CODE BLOCK ------

----------------------------------------------------------------
This message was sent using IMP, the Internet Messaging Program.