Ví dụ mã

program CurveExample;
{$APPTYPE CONSOLE}
uses
    SysUtils, Graphics, Classes, HPDFDoc;

var
    HPDF: THotPDF;

begin
    HPDF := THotPDF.Create( nil );
    try
        HPDF.AutoLaunch := true;                        // PDF file will be shown automatically
        HPDF.FileName := '.\Curve.pdf';                 // Set PDF filename
        HPDF.BeginDoc;                                  // Create PDF file
        HPDF.CurrentPage.MoveTo( 50, 300 );             // Move first point
        HPDF.CurrentPage.CurveToV(150, 50, 200, 200);   // Draw curve
        HPDF.CurrentPage.Stroke;                        // Stroke curve
        HPDF.EndDoc;                                    // Close PDF file
    finally
        HPDF.Free;
    end;
end.