新手请教，谢谢

Question

谁能告诉我红色部分的数值是什么意思啊，谢谢！
canvas.TextRect(Rect(180,490,pagewidth-180,pageheight-490),180,490,memo1.LineS.Text);

Answer 1

rect是个函数：function Rect(Left, Top, Right, Bottom: Integer): TRect;Call Rect to create a TRect that represents the rectangle with the specified coordinates. Use Rect to construct parameters for functions that require TRect, rather than setting up local variables for each parameter.PageWidth,pageheight:是TPrinter或TPageSetupDialog的属性，看字面也能知道是页的宽与高

Answer 2

with printer do
   begin
     beginDoc;
     canvas.TextRect(Rect(180,490,pagewidth-180,
            pageheight-490),180,490,memo1.LineS.Text);
     canvas.TextRect(Rect(180,530,pagewidth-180,
            pageheight-530),180,530,memo2.LineS.Text);
     canvas.TextRect(Rect(0,40,pagewidth-0,
            pageheight-40),0,40,memo3.LineS.Text);
     canvas.TextRect(Rect(0,80,pagewidth-0,
            pageheight-80),0,80,memo4.LineS.Text);
     canvas.TextRect(Rect(0,160,pagewidth-0,
            pageheight-160),0,160,memo5.LineS.Text);
     canvas.TextRect(Rect(0,320,pagewidth-0,
            pageheight-320),0,320,memo6.LineS.Text);
     canvas.TextRect(Rect(0,640,pagewidth-0,
            pageheight-640),0,640,memo7.LineS.Text);
     canvas.TextRect(Rect(0,800,pagewidth-0,
            pageheight-800),0,800,memo8.LineS.Text);
   enddoc;
memo1里的东西打印不出来，怎么回事？谢谢