摘要：
unit uPrinter;interfaceuses Printers, types, Windows, Classes, SysUtils, Forms;function CharHeight: Word;function AvgCharWidth: Word;function GetPhicalPaper: TPoint;function PaperLogicSize: TPoint;function HVLogincRatio: Extended;function GetOffSetX: Integer;function GetOffSetY: Integer;function MmT 阅读全文