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ÄÇôÎҵİ취ÊDZàдÁ½¸ö×ӳ̣¬ÆäÖÐÒ»¸ö´¦ÀíÑ¡µ¥ÖеÄʼþ£¬ÁíÍâÒ»¸öרߺÔð»­Ñ¡µ¥¡£
ÔÚ´Ó²½ÐÐÇл»µ½Ñ¡µ¥µÄʱºò£¬¿ÉÄÜÐèÒªÇå³ýµ±Ç°µÄ¼üÖµ¡£Èç¹û²½ÐÐÖÐʹÓÃÁËSDL_EnableKeyRepeat·½·¨°Ñ¼üÅÌµÄÆµÂʱä¸ß£¬¶ÔÓÚÑ¡µ¥À´Ëµ¾ÍÌ«¿ìÁË¡£ËùÒÔ¿ÉÄÜÒªÔÚµ÷ÓÃÑ¡µ¥Ö®Ç°Ð´ÉÏ£º
SDL_EnableKeyRepeat(0, 0);
event.key.keysym.sym := 0;
ÕâÑù½µµÍÁ˼üÅ̵ķ´Ó¦£¬Í¬Ê±Çå³ýµ±Ç°µÄ¼üÖµ£¬Òª²»È»ºô³öÑ¡µ¥Ö®ºóËü¿ÉÄÜ»¹»á×Ô¼º×ªÒ»»á£¨Èç¹û֮ǰÓÃÁËPollEvent·½Ê½£¬ÎÒ»¹Ã»¸ãÇå³þÔ­Òò£©¡£²»¹ýÈç¹ûÔÚÐÐ×ßÖÐʹÓõÄÊÇWaitEvent·½Ê½£¬ÊÂÇé¾Í»á¼òµ¥ºÜ¶à¡£PollEvent·½Ê½¿´À´ÊÇÌ«¿ìÁË£¬ÔÚÑ¡µ¥Öв»ºÏÊÊ¡£
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procedure MenuSystem;
var
  menu: integer;
begin
  while (SDL_WaitEvent(@event) >= 0) do
  begin
    case event.type_ of
      SDL_QUITEV: //ÕâÀï´¦Àí´°¿ÚÍ˳öʼþ
        if messagebox(0, 'Are you sure to quit?', 'KYS Windows', MB_OKCANCEL) = IDOK then Quit;
      SDL_KEYUP:
        begin
          if (event.key.keysym.sym = sdlk_down) then
          begin
            menu := menu+1;
            if menu > 3 then menu := 0; //°´ÏÂϼüµÄÒç³ö
            showMenusystem(menu); //ÿ´Îµ±Ç°Ñ¡Öз¢Éú±ä»¯Ê±, ¾ùÖØ»­Ñ¡µ¥
          end;
          if (event.key.keysym.sym = sdlk_up) then
          begin
           


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