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uses Windows;
procedure ClearScreen; //清屏
var sbi: TConsoleScreenBufferInfo;
h: hwnd;
Cord: _COORD;
R: Cardinal;
begin
h := GetStdHandle(STD_OUTPUT_HANDLE);
GetConsoleScreenBufferInfo(h, sbi);
Cord.X := 0;
Cord.Y := 0;
FillConsoleOutputCharacter(h, ' ', sbi.dwSize.X * sbi.dwSize.Y, Cord, R);
SetConsoleCursorPosition(h, Cord);
end;