【转】csharp: winform using Microsoft.Ink(Tablet PC API) create Signature image

/*
 下載：
 //Microsoft Windows XP Tablet PC Edition 2005 Recognizer Pack http://www.microsoft.com/zh-cn/download/details.aspx?id=1601
 //Microsoft Windows XP Tablet PC Edition Software Development Kit 1.7  http://www.microsoft.com/en-us/download/details.aspx?id=20039
  * Microsoft Speech Platform - Software Development Kit (SDK) (Version 11) http://www.microsoft.com/en-us/download/details.aspx?id=27226
  * Microsoft SDKs http://msdn.microsoft.com/en-us/dd299405.aspx
  *Microsoft.Ink 命名空间  http://msdn.microsoft.com/zh-cn/library/microsoft.ink%28v=vs.90%29.aspx
  * 
  *  安裝的文件在：//Program Files\Microsoft Tablet PC Platform SDK\Include\Microsoft.Ink.dll
  *  在Windows XP sp3 環境下測試
  */
 
 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;
 using System.IO;
 using Microsoft.Ink; //引用：Micosoft Tablet PC
 
 
 
 
 
 namespace ChineseCalenderGeovinDu
 {
     /// <summary>
     /// 20120914
     /// 塗聚文
     /// 捷為工作室
     /// 締友計算機信息技術有限公司
     /// </summary>
     public partial class TabletPCForm : Form
     {
 
         InkOverlay inkOverlay;
         InkPicture InkPicture1 = new InkPicture();
 
         /// <summary>
         /// 
         /// </summary>
         public TabletPCForm()
         {
             InitializeComponent();
         }
         /// <summary>
         /// 
         /// </summary>
         /// <param name="sender"></param>
         /// <param name="e"></param>
         private void TabletPCForm_Load(object sender, EventArgs e)
         {
             inkOverlay = new InkOverlay();
             inkOverlay.Handle = this.pictureBox1.Handle;// this.Handle;//整個窗體
             inkOverlay.Enabled = true;
 
         }
        
         /// <summary>
         /// 保存圖片
         /// </summary>
         /// <param name="sender"></param>
         /// <param name="e"></param>
         private void buttonSave_Click(object sender, EventArgs e)
         {
             SaveFileDialog sfd = new SaveFileDialog();
             sfd.Filter = "GIF IMAGES(*.gif)|*.gif";
             if (sfd.ShowDialog() == DialogResult.OK)
             {
                 txtpath.Text = sfd.FileName;
                 FileStream gifFile;
                 byte[] fortifiedGif = null;
                 // open the file for writing
                 gifFile = File.OpenWrite(txtpath.Text);
                 // Generate the fortified GIF represenation of the ink
                 fortifiedGif = inkOverlay.Ink.Save(PersistenceFormat.Gif);
                 // Write and close the gif file
                 gifFile.Write(fortifiedGif, 0, fortifiedGif.Length);
                 gifFile.Close();
                 this.pictureBox2.Image = Image.FromFile(sfd.FileName);
             }
         }
 
        
         /// <summary>
         /// 清除
         /// </summary>
         /// <param name="sender"></param>
         /// <param name="e"></param>
         private void buttonClear_Click(object sender, EventArgs e)
         {
             inkOverlay.Enabled = false;
             inkOverlay.Ink.DeleteStrokes();
             this.pictureBox1.Invalidate() ;
             this.pictureBox2.Invalidate();
             inkOverlay.Enabled = true;
         }
 
 
 
 
 
 
 
 
 
 
     }
 
 }