Event Driven programming in c Linux Based

In a GUI program events occur typically when we click on the window, type a character, close the window, repaint the window, etc. We have chosen the GTK library version 2.0 to create the GUI applications. Here, GTK stands for Gimp’s Tool Kit.

below is the first program that uses this toolkit to create a window on the screen.

/* mywindow.c */
# include 
int main ( int argc, char *argv[ ] )
{
GtkWidget *p ;
gtk_init ( &argc, &argv ) ;
p = gtk_window_new ( GTK_WINDOW_TOPLEVEL ) ;
gtk_window_set_title ( p , "Sample Window" ) ;
g_signal_connect ( p, "destroy", gtk_main_quit, NULL ) ;
gtk_widget_set_size_request ( p, 300, 300 ) ;
gtk_widget_show ( p ) ;
gtk_main( ) ;
return 0 ;
}