src/main.c

   1 #include <gtk/gtk.h>
   2
   3 static void
   4 print_hello (GtkWidget *widget,
   5              gpointer   data)
   6 {
   7   gchar* msg = (gchar*) data;
   8
   9   g_print ("%s\n", msg);
  10 }
  11
  12 static void
  13 activate (GtkApplication *app,
  14           gpointer        user_data)
  15 {
  16   GtkWidget *window;
  17   GtkWidget *grid;
  18   GtkWidget *button;
  19
  20   /* create a new window, and set its title */
  21   window = gtk_application_window_new (app);
  22   gtk_window_set_title (GTK_WINDOW (window), "Window");
  23   gtk_container_set_border_width (GTK_CONTAINER (window), 10);
  24
  25   /* Here we construct the container that is going pack our buttons */
  26   grid = gtk_grid_new ();
  27
  28   /* Pack the container in the window */
  29   gtk_container_add (GTK_CONTAINER (window), grid);
  30
  31   button = gtk_button_new_with_label ("Button 1");
  32   g_signal_connect (button, "clicked", G_CALLBACK (print_hello), "Hello World #1");
  33
  34   /* Place the first button in the grid cell (0, 0), and make it fill
  35    * just 1 cell horizontally and vertically (ie no spanning)
  36    */
  37   gtk_grid_attach (GTK_GRID (grid), button, 0, 0, 1, 1);
  38
  39   button = gtk_button_new_with_label ("Button 2");
  40   g_signal_connect (button, "clicked", G_CALLBACK (print_hello), "Hello World #2");
  41
  42   /* Place the second button in the grid cell (1, 0), and make it fill
  43    * just 1 cell horizontally and vertically (ie no spanning)
  44    */
  45   gtk_grid_attach (GTK_GRID (grid), button, 1, 0, 1, 1);
  46
  47   button = gtk_button_new_with_label ("Quit");
  48   g_signal_connect_swapped (button, "clicked", G_CALLBACK (gtk_widget_destroy), window);
  49
  50   /* Place the Quit button in the grid cell (0, 1), and make it
  51    * span 2 columns.
  52    */
  53   gtk_grid_attach (GTK_GRID (grid), button, 0, 1, 2, 1);
  54
  55   /* Now that we are done packing our widgets, we show them all
  56    * in one go, by calling gtk_widget_show_all() on the window.
  57    * This call recursively calls gtk_widget_show() on all widgets
  58    * that are contained in the window, directly or indirectly.
  59    */
  60   gtk_widget_show_all (window);
  61
  62 }
  63
  64 int
  65 main (int    argc,
  66       char **argv)
  67 {
  68   GtkApplication *app;
  69   int status;
  70
  71   app = gtk_application_new ("org.gtk.example", G_APPLICATION_DEFAULT_FLAGS);
  72   g_signal_connect (app, "activate", G_CALLBACK (activate), NULL);
  73   status = g_application_run (G_APPLICATION (app), argc, argv);
  74   g_object_unref (app);
  75
  76   return status;
  77 }
  78