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.
--
Michiel de Hoon
Center for Computational Biology and Bioinformatics
Columbia University
1130 St Nicholas Avenue
New York, NY 10032
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