From this tuto:

#include <gtk/gtk.h>

int main( int argc, char *argv[])
{
  GtkWidget *window;

  gtk_init(&argc, &argv);

  window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
  gtk_widget_show(window);

  gtk_main();

  return 0;
}

I run the executable and right click on the icon,then infinite warnings(the same) reported:

GLib-WARNING **: g_main_context_check() called recursively from within a source's check() or prepare() member. 

Anyone knows how to fix this warning?