EFI switch Graphic Mode

UEFI switch between graphic/Text mode example. 

  EFI_CONSOLE_CONTROL_PROTOCOL  *ConsoleControl = NULL;

  Status = gBS->LocateProtocol (&gEfiConsoleControlProtocolGuid, NULL, (VOID**)&ConsoleControl);

  if (ConsoleControl != NULL)

  {

    ConsoleControl->SetMode(ConsoleControl, EfiConsoleControlScreenGraphics);

  }

Only below two modes can choose from.

  EfiConsoleControlScreenText,

  EfiConsoleControlScreenGraphics

Learn one thing. Even switch to graphic mode, you can still use EFI_SIMPLE_TEXT_OUTPUT_PROTOCOL or even Print.