On Wednesday 21 March 2007 18:50:38 Michiel Jan Laurens de Hoon wrote:
> For my application, I need to run gtk_main but I want to quit gtk_main
> when either input is available on stdin or the user presses Ctrl-C. The
> former is easy (using g_io_add_watch), but I am not sure what the best
> approach is to handle Ctrl-C. Right now I am using g_timeout_add to
> check every 100 milliseconds if Ctrl-C has been hit. But I'm wondering
> if there is a better way to do this, preferably without checking
> periodically for a Ctrl-C.
>
> The relevant code looks as follows:
>
>
> static gboolean
> _main_quit(GIOChannel* source, GIOCondition condition, gpointer data)
> {
> gtk_main_quit();
> return FALSE;
> }
>
>
> static int _interrupt_occurred = 0;
>
>
> static gboolean _check_interrupt(gpointer data)
> {
> if (_interrupt_occurred)
> {
> gtk_main_quit();
> return FALSE;
> }
> return TRUE;
> }
>
>
> static void _interrupt_handler(int sig)
> {
> _interrupt_occurred = 1;
> }
>
>
> int main(void)
> {
> /* ... some other code up here ... */
> signal(SIGINT, _interrupt_handler);
> GIOChannel* channel = g_io_channel_unix_new(fileno(stdin));
> g_io_add_watch(channel, G_IO_IN, _main_quit, NULL);
> g_io_channel_unref(channel);
> g_timeout_add(100, _check_interrupt, NULL);
> gtk_main();
> if (_interrupt_occurred)
> {
> _interrupt_occurred = 0;
> /* Do something with the interrupt */
> }
> return 0;
> }
>
>
>
> Many thanks in advance,
>
> --Michiel.
>
>
Hi,
maybe adding this to main
/*signal(SIGHUP,SIG_IGN); */ /* ignore SIGHUP */
/*signal(SIGTERM,signal_handler);*/ /* catch SIGTERM */
signal(SIGINT,signal_handler); /* catch SIGINT */
and using this handler
static void signal_handler(int sig) __attribute__(( __noreturn__ ));
static void signal_handler(int sig)
{
switch (sig) {
case SIGINT:
puts("SIGINT signal catched");
break;
case SIGTERM:
puts("SIGTERM signal catched");
break;
}
/* Do something useful here */
exit(EXIT_FAILURE);
}
Ciao,
Tito
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