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  1. #include <efi.h>
  2. #include <efilib.h>
  3.  
  4. EFI_STATUS
  5. efi_main (EFI_HANDLE image, EFI_SYSTEM_TABLE *systab)
  6. {
  7.     EFI_INPUT_KEY efi_input_key;
  8.     EFI_STATUS efi_status;
  9.  
  10.     InitializeLib(image, systab);
  11.  
  12.     Print(L"HelloLib application started\n");
  13.  
  14.     Print(L"\n\n\nHit any key to exit this image\n");
  15.     WaitForSingleEvent(ST->ConIn->WaitForKey, 0);
  16.  
  17.     ST->ConOut->OutputString(ST->ConOut, L"\n\n");
  18.  
  19.     efi_status = ST->ConIn->ReadKeyStroke(ST->ConIn, &efi_input_key);
  20.  
  21.     Print(L"ScanCode: %xh  UnicodeChar: %xh\n",
  22.         efi_input_key.ScanCode, efi_input_key.UnicodeChar);
  23.  
  24.     return EFI_SUCCESS;
  25. }
  26.