c# - webbrowser 组件打印带有偏移量的 qplot 图

Question

有没有人知道总是打印带有奇怪偏移量的 jqplot 图形的 webbrowser 组件？

这个非常简单的示例在 webbrowser 组件中加载 jqplot 示例页面，可以正确显示页面，但是当您尝试打印它时，您只会在图表中得到偏移量。

同一网页在 IE 中正确显示和打印！

我还尝试了在 Delphi2007 和 DelphiXE3 中编写的这个示例，并得到了完全相同的结果。

Form1.cs

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;

namespace testwebbrowser
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            wb.Navigate("http://www.jqplot.com/tests/bar-charts.php");
        }

        private void button2_Click(object sender, EventArgs e)
        {
            wb.ShowPrintPreviewDialog();
        }
    }
}

Form1.Designer.cs

namespace testwebbrowser
{
    partial class Form1
    {
        /// <summary>
        /// Required designer variable.
        /// </summary>
        private System.ComponentModel.IContainer components = null;

        /// <summary>
        /// Clean up any resources being used.
        /// </summary>
        /// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
        protected override void Dispose(bool disposing)
        {
            if (disposing && (components != null))
            {
                components.Dispose();
            }
            base.Dispose(disposing);
        }

        #region Windows Form Designer generated code

        /// <summary>
        /// Required method for Designer support - do not modify
        /// the contents of this method with the code editor.
        /// </summary>
        private void InitializeComponent()
        {
            this.panel1 = new System.Windows.Forms.Panel();
            this.button1 = new System.Windows.Forms.Button();
            this.button2 = new System.Windows.Forms.Button();
            this.wb = new System.Windows.Forms.WebBrowser();
            this.panel1.SuspendLayout();
            this.SuspendLayout();
            // 
            // panel1
            // 
            this.panel1.Controls.Add(this.button2);
            this.panel1.Controls.Add(this.button1);
            this.panel1.Dock = System.Windows.Forms.DockStyle.Top;
            this.panel1.Location = new System.Drawing.Point(0, 0);
            this.panel1.Name = "panel1";
            this.panel1.Size = new System.Drawing.Size(597, 71);
            this.panel1.TabIndex = 0;
            // 
            // button1
            // 
            this.button1.Location = new System.Drawing.Point(12, 12);
            this.button1.Name = "button1";
            this.button1.Size = new System.Drawing.Size(75, 23);
            this.button1.TabIndex = 0;
            this.button1.Text = "button1";
            this.button1.UseVisualStyleBackColor = true;
            this.button1.Click += new System.EventHandler(this.button1_Click);
            // 
            // button2
            // 
            this.button2.Location = new System.Drawing.Point(93, 12);
            this.button2.Name = "button2";
            this.button2.Size = new System.Drawing.Size(75, 23);
            this.button2.TabIndex = 1;
            this.button2.Text = "button2";
            this.button2.UseVisualStyleBackColor = true;
            this.button2.Click += new System.EventHandler(this.button2_Click);
            // 
            // wb
            // 
            this.wb.Dock = System.Windows.Forms.DockStyle.Fill;
            this.wb.Location = new System.Drawing.Point(0, 71);
            this.wb.MinimumSize = new System.Drawing.Size(20, 20);
            this.wb.Name = "wb";
            this.wb.Size = new System.Drawing.Size(597, 370);
            this.wb.TabIndex = 1;
            // 
            // Form1
            // 
            this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
            this.ClientSize = new System.Drawing.Size(597, 441);
            this.Controls.Add(this.wb);
            this.Controls.Add(this.panel1);
            this.Name = "Form1";
            this.Text = "Form1";
            this.panel1.ResumeLayout(false);
            this.ResumeLayout(false);

        }

        #endregion

        private System.Windows.Forms.Panel panel1;
        private System.Windows.Forms.Button button2;
        private System.Windows.Forms.Button button1;
        private System.Windows.Forms.WebBrowser wb;
    }
}