...get mouse wheel line count?

Author: Rainer K├╝mmerle
Homepage: http://www.thinklazy.de

Category: Misc

//Not supported on Windows 95
//result = -1: scroll whole page

function GetNumScrollLines: Integer;
begin
  
SystemParametersInfo(SPI_GETWHEELSCROLLLINES, 0, @Result, 0);
end;

procedure TForm1.Button1Click(Sender: TObject);
begin
  
ShowMessage(IntToStr(GetNumScrollLines));
end

 

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