add packages gtk3 and gtkmm3

Pango has been updated to 1.37.4 in 24cf97dbdd62ece0ea0b39cf33694a8804352bd1

Side effects:
  * mute function g_win32_run_session_bus of glib (see the thread)
  * add new external dependency: gdk-pixbuf

Original thread:
https://lists.nongnu.org/archive/html/mingw-cross-env-list/2015-08/msg00009.html

1 files changed, 34 insertions, 0 deletions

diff --git a/src/gtk3-test.c b/src/gtk3-test.c
new file mode 100644
index 0000000..7442034
--- /dev/null
+++ b/src/gtk3-test.c
@@ -0,0 +1,34 @@
+/*
+ * This file is part of MXE.
+ * See index.html for further information.
+ */
+
+#include <gtk/gtk.h>
+
+static void activate(GtkApplication *app)
+{
+  GtkWidget *window;
+  GtkWidget *button;
+
+  window = gtk_application_window_new(app);
+  button = gtk_button_new_with_label("Hello World");
+
+  g_signal_connect_swapped(button, "clicked",
+			   G_CALLBACK(gtk_widget_destroy), window);
+  gtk_container_add(GTK_CONTAINER(window), button);
+
+  gtk_widget_show_all(window);
+}
+
+int main(int argc, char *argv[])
+{
+  GtkApplication *app;
+  int status;
+
+  app = gtk_application_new(NULL, 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;
+}