c++ was a submodule instead of a folder, renamed to emu

emu/program.cpp

@@ -0,0 +1,53 @@
+#include <cairo.h>
+#include <gtk/gtk.h>
+
+static void do_drawing(cairo_t *);
+
+static gboolean on_draw_event(GtkWidget *widget, cairo_t *cr, 
+    gpointer user_data)
+{      
+  do_drawing(cr);
+
+  return FALSE;
+}
+
+static void do_drawing(cairo_t *cr)
+{
+  cairo_set_source_rgb(cr, 0, 0, 0);
+  cairo_select_font_face(cr, "Sans", CAIRO_FONT_SLANT_NORMAL,
+      CAIRO_FONT_WEIGHT_NORMAL);
+  cairo_set_font_size(cr, 40.0);
+
+  cairo_move_to(cr, 10.0, 50.0);
+  cairo_show_text(cr, "Disziplin ist Macht.");    
+}
+
+
+int main(int argc, char *argv[])
+{
+  GtkWidget *window;
+  GtkWidget *darea;
+
+  gtk_init(&argc, &argv);
+
+  window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
+
+  darea = gtk_drawing_area_new();
+  gtk_container_add(GTK_CONTAINER(window), darea);
+
+  g_signal_connect(G_OBJECT(darea), "draw", 
+      G_CALLBACK(on_draw_event), NULL); 
+  g_signal_connect(window, "destroy",
+      G_CALLBACK(gtk_main_quit), NULL);
+
+  gtk_window_set_position(GTK_WINDOW(window), GTK_WIN_POS_CENTER);
+  gtk_window_set_default_size(GTK_WINDOW(window), 400, 90); 
+  gtk_window_set_title(GTK_WINDOW(window), "GTK window");
+  gtk_window_set_resizable(GTK_WINDOW(window), FALSE);
+
+  gtk_widget_show_all(window);
+
+  gtk_main();
+
+  return 0;
+}