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begin
Windows.Beep(1200+i_f,10+i_f);
if i_f<2000 then
begin
inc(i_f);
end
end;
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var i:integer;
var n1:integer;
var tem1: string;
var tem2:integer;
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function GetSystemTaskBarHeight:Integer;
var
R:TRect;
begin
SystemParametersInfo(SPI_GETWORKAREA,0,@R,0);
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