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Clearing the window in a console application

Question: How can I guarantee to clear my window in a console application? Answer: The following example demonstrates clearing the console window by using the screensize information passed back from the Windows API function GetConsoleScreenBufferInfo() to write several blank lines. Example: program Project1; {$APPTYPE CONSOLE} uses Windows; {$R *.RES} var sbi : TConsoleScreenBufferInfo; i : integer; begin Writeln('A Console Applicaiton'); Writeln('Press Enter To Clear The Screen'); GetConsoleScreenBufferInfo(GetStdHandle(STD_OUTPUT_HANDLE), sbi); Readln; GetConsoleScreenBufferInfo(GetStdHandle(STD_OUTPUT_HANDLE), sbi); for i := 0 to sbi.dwSize.y do writeln; Writeln('Press Enter To End'); Readln; end.