Re: Delay displaying text in a clist

[Markus Lausser <sgop users sourceforge net>]

On Mon, 2004-02-02 at 21:07, Thomas Keaney wrote:
> Hi,
>
> Im using the clist and I want to delay displaying the text for a
> moment. That is when I click on a button I want a message to be
> displayed. I want this message to be displayed for a few seconds
> before another message will be displayed without clicking on the
> button. (Click Button ->Message1 with delay -> Message2 ) Thanks in
> advance.

In gtk+-2.x:
--------------------------------

static int Timer = 0;
static void on_button_clicked(GtkButton* button, GtkCList* clist);
static void display_text(GtkCList* clist, const char* text);
static gboolean timer_func(GtkCList* clist);

int main (void) {
  ...
  g_signal_connect(G_OBJECT(button), "clicked",
                   G_CALLBACK(on_button_clicked), clist);
  ...
  return 0;
}

static void on_button_clicked(GtkButton* button, GtkCList* clist) {
  const char* text;
 
  text = get_text_to_display_somehow();
  display_text(clist, text);
}

static void display_text(GtkCList* clist, const char* text) {
  
  // maybe the next line doesnt work because of text being const.
  gtk_clist_append(clist, &text);

  if (Timer) g_source_remove(Timer);
  Timer =
    g_timeout_add(1000*some_seconds, (GSourceFunc)timer_func, clist);
}

static gboolean timer_func(GtkCList* clist) {
  display_text(clist, "some other text");
  Timer = 0;
  return FALSE;
}

--------------------------------

Same in gtk+-1.2, with slightly modified function names
(gtk_signal_connect, etc.).

Markus.