_dual_screen = new wxFrame (this, wxID_ANY, wxT(""));
_dual_screen->SetBackgroundColour (wxColour(0, 0, 0));
_dual_screen->ShowFullScreen (true);
_dual_screen = new wxFrame (this, wxID_ANY, wxT(""));
_dual_screen->SetBackgroundColour (wxColour(0, 0, 0));
_dual_screen->ShowFullScreen (true);