diff --git a/program.cpp b/program.cpp
new file mode 100644
index 0000000..59d4b1e
--- /dev/null
+++ b/program.cpp
@@ -0,0 +1,28 @@
+#include <iostream>
+#include <string>
+#include <gtk/gtk.h>
+
+using namespace std;
+
+static void activate(GtkApplication* app, gpointer user_data)
+{
+  GtkWidget *window;
+
+  window = gtk_application_window_new(app);
+  gtk_window_set_title (GTK_WINDOW(window), "z80 screen test");
+  gtk_window_set_default_size(GTK_WINDOW(window), 320, 200);
+  gtk_widget_show_all(window);
+}
+
+int main(int argc, char **argv)
+{
+  GtkApplication *app;
+  int status;
+
+  app = gtk_application_new("org.gtk.example", G_APPLICATION_FLAGS_NONE);
+  g_signal_connect(app, "activate", G_CALLBACK(activate), NULL);
+  status = g_application_run(G_APPLICATION(app), argc, argv);
+  g_object_unref(app);
+
+  return status;
+}