http://www.cnblogs.com/xuezhizhang/archive/2010/11/25/1887735.html
电子证书签名及CAB包制作工具下载
C#开发ActiveX控件参考资料:
http://www.cnblogs.com/zhf/archive/2009/03/02/1401299.html
http://www.cnblogs.com/homer/archive/2005/01/08/88780.html
C#开发ActiveX的详细介绍见以上两篇文章,我只补充这两篇文章未说明的。
1.实现脚本调用ActiveX方法,必需将方法定义到一个接口中(该接口使用一个唯一的GUID,不能与ActiveX控件的GUID相同),然后在ActiveX方法即控件类中实现该接口中的方法。
2.在ActiveX中使用WebBrowser控件,不可直接从工具箱中拖出该控件使用,只需声明一个WebBrowser对象,在需要使用的时候实例化即可。不然在ActiveX中无法正常使用,即使在本地测试的时候没有问题,在页面中使用你会发现WebBrowser对象已经被释放。
3.在Windows 7下,必需以管理员权限运行VS,设置的COM自动注册才能顺利完成。
以我的代码为例:
代码using System; using System.Collections.Generic; using System.ComponentModel; using System.Drawing; using System.Data; using System.Text; using System.Windows.Forms; using System.Runtime.InteropServices;namespace EstatePrintMapActiveX { //控件类,GUID可以在工具中生成,此处的GUID即为页面中引用控件时使用的CLASSID //ComVisible(true)设置是否自动注册控件,设置项目属性中的“生成”项下的“为COM互操作注册”为勾选实现在本地自动注册(windows7需要以管理员运行该项目) [Guid("1161E5A8-B698-4e57-8B56-B5B06B69FF4D"), ProgId("EstatePrintMapActiveX.UserControl1"), ClassInterface(ClassInterfaceType.None), ComVisible(true)] public partial class UserControl1 : UserControl, IMonitor, IObjectSafety { #region 实现IObjectSafety 成员public void GetInterfacceSafyOptions(int riid, out int pdwSupportedOptions, out int pdwEnabledOptions) { pdwSupportedOptions = 1; pdwEnabledOptions = 2; }public void SetInterfaceSafetyOptions(int riid, int dwOptionsSetMask, int dwEnabledOptions) { throw new NotImplementedException(); }#endregionSystem.Windows.Forms.WebBrowser webBrowser;bool isDetailPrint = false;//默认打印多张 string stringUrl;//需要打印的页面的URLpublic UserControl1() { InitializeComponent(); }//供JS调用的方法(必需在IMonitor接口中定义,接口名可自定) public void SetUrlText(string strUrl, string pra) { if (pra == "1")//多图页面,打印多张 { stringUrl = strUrl; btnCapture.Text = "启动楼层图打印控件";//通过脚本参数改变控件按钮文字 SetWebBrowser(); } else if (pra == "2") { stringUrl = strUrl; SetWebBrowser(); isDetailPrint = true;//详细页面,打印单张 } else { //无平面图信息则隐藏控件 this.Visible = false; this.Height = 0; this.Width = 0; Dispose(true); } }//声明webBrowserObj并初始化 private void SetWebBrowser() { try { WebBrowser webBrowserObj = new WebBrowser(); webBrowserObj.Dock = System.Windows.Forms.DockStyle.Fill; webBrowserObj.Location = new System.Drawing.Point(0, 0); webBrowserObj.MinimumSize = new System.Drawing.Size(20, 20); webBrowserObj.Name = "webBrowser"; webBrowserObj.ScrollBarsEnabled = false;//不显示滚动条 webBrowserObj.Size = new System.Drawing.Size(1050, 97); webBrowserObj.TabIndex = 0; webBrowserObj.Navigating += new System.Windows.Forms.WebBrowserNavigatingEventHandler(this.webBrowser_Navigating);//加载事件 webBrowserObj.DocumentCompleted += new System.Windows.Forms.WebBrowserDocumentCompletedEventHandler(this.webBrowser_DocumentCompleted);//加载完成事件webBrowser = webBrowserObj;webBrowser.Navigate(stringUrl);//加载页面 } catch (Exception ex) { MessageBox.Show(ex.Message); } }//截图方法 private void btnCapture_Click(object sender, EventArgs e) { try { //截图 Bitmap bmp = Snapshot.TakeSnapshot(this.webBrowser.ActiveXInstance, new Rectangle(new Point(), webBrowser.Size));生成图片的方法,imgName为图片完整路径(含文件名) //bmp.Save(imgName, System.Drawing.Imaging.ImageFormat.Bmp); //bmp.Dispose();Form printView = new Form1(bmp, isDetailPrint); printView.Show();//在弹出的Form中显示截图及“打印”、“关闭”按钮} catch (Exception ex) { MessageBox.Show(ex.Message); }}//加载完成记录高度和宽度、启动按钮可用 private void webBrowser_DocumentCompleted(object sender, WebBrowserDocumentCompletedEventArgs e) { btnCapture.Enabled = true;//“启动打印控件”按钮可用//设置WebBrowser的Size,之后调用截图方法时要使用该Size以保证截的图为完整的 webBrowser.Size = new Size(int.Parse(webBrowser.Document.Body.GetAttribute("scrollwidth")), int.Parse(webBrowser.Document.Body.GetAttribute("scrollHeight")));}//开始加载页面 private void webBrowser_Navigating(object sender, WebBrowserNavigatingEventArgs e) { btnCapture.Enabled = false;//初始加载时“启动打印控件”按钮不可用 }} }其中脚本方法接口和安全接口定义如下:代码using System; using System.Collections.Generic; using System.Text; using System.ComponentModel; using System.Runtime.InteropServices;namespace EstatePrintMapActiveX { [Guid("8FF612BC-4386-4629-B81A-E84AD7CB7AE7"), InterfaceType(ComInterfaceType.InterfaceIsDual), ComVisible(true)] public interface IMonitor { void SetUrlText(string strUrl, string pra); }[Serializable, ComVisible(true)] public enum ObjectSafetyOptions { INTERFACESAFE_FOR_UNTRUSTED_CALLER = 0x00000001, INTERFACESAFE_FOR_UNTRUSTED_DATA = 0x00000002, INTERFACE_USES_DISPEX = 0x00000004, INTERFACE_USES_SECURITY_MANAGER = 0x00000008 };MS IObjectSafety Interface definition //[ComImport(), Guid("CB5BDC81-93C1-11CF-8F20-00805F2CD064"), InterfaceType(ComInterfaceType.InterfaceIsIUnknown)] //public interface IObjectSafety //{ // [PreserveSig] // long GetInterfaceSafetyOptions(ref Guid iid, out int pdwSupportedOptions, out int pdwEnabledOptions);// [PreserveSig] // long SetInterfaceSafetyOptions(ref Guid iid, int dwOptionSetMask, int dwEnabledOptions); //};[ComImport, Guid("CB5BDC81-93C1-11CF-8F20-00805F2CD064")] [InterfaceType(ComInterfaceType.InterfaceIsIUnknown)] public interface IObjectSafety { [PreserveSig] void GetInterfacceSafyOptions( int riid, out int pdwSupportedOptions, out int pdwEnabledOptions);[PreserveSig] void SetInterfaceSafetyOptions( int riid, int dwOptionsSetMask, int dwEnabledOptions); }}截图方法(引自随飞:http://chinasf.cnblogs.com):
代码using System; using System.Drawing; using System.Runtime.InteropServices; using System.Runtime.InteropServices.ComTypes;namespace EstatePrintMapActiveX { /// <summary> /// ActiveX 组件快照类 /// AcitveX 必须实现 IViewObject 接口 /// 作者:随飞 /// http://chinasf.cnblogs.com /// chinasf@hotmail.com /// </summary> public static class Snapshot { /// <summary> /// 取快照 /// </summary> /// <param name="pUnknown">Com 对象</param> /// <param name="bmpRect">图象大小</param> /// <returns></returns> public static Bitmap TakeSnapshot(object pUnknown, Rectangle bmpRect) { if (pUnknown == null) return null;//必须为com对象 if (!Marshal.IsComObject(pUnknown)) return null;//IViewObject 接口 UnsafeNativeMethods.IViewObject ViewObject = null; IntPtr pViewObject = IntPtr.Zero; //内存图 Bitmap pPicture = new Bitmap(bmpRect.Width, bmpRect.Height); Graphics hDrawDC = Graphics.FromImage(pPicture); //获取接口 object hret = Marshal.QueryInterface(Marshal.GetIUnknownForObject(pUnknown), ref UnsafeNativeMethods.IID_IViewObject, out pViewObject);try { ViewObject = Marshal.GetTypedObjectForIUnknown(pViewObject, typeof(UnsafeNativeMethods.IViewObject)) as UnsafeNativeMethods.IViewObject; //调用Draw方法 ViewObject.Draw((int)DVASPECT.DVASPECT_CONTENT, -1, IntPtr.Zero, null, IntPtr.Zero, hDrawDC.GetHdc(), new NativeMethods.COMRECT(bmpRect), null, IntPtr.Zero, ); Marshal.Release(pViewObject); } catch (Exception ex) { Console.WriteLine(ex.Message); throw ex; }//释放 hDrawDC.Dispose(); return pPicture; } }}打印方法:
代码using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Text; using System.Windows.Forms;namespace EstatePrintMapActiveX { public partial class Form1 : Form { int PageCount; int pageCountTmp; bool isDetailPrint = false; public Form1(Bitmap bmp, bool isDetailPrintPar) { InitializeComponent();isDetailPrint = isDetailPrintPar;Image imgObj = (Image)bmp; pictureBox1.Height = imgObj.Height; pictureBox1.Width = imgObj.Width;panel1.Width = pictureBox1.Width; panel1.Height = pictureBox1.Height;this.Width = pictureBox1.Width; this.Height = pictureBox1.Height;panel1.Visible = true;pictureBox1.Image = imgObj; PageCount = pictureBox1.Image.Height / 1500; pageCountTmp = PageCount;btn.Visible = true; btnClose.Visible = true; }//打印过程中调用 private void printDocument1_PrintPage(object sender, System.Drawing.Printing.PrintPageEventArgs e) { if (!isDetailPrint)//多页 { if (PageCount >= 1) { e.HasMorePages = true;//分页设置 e.Graphics.DrawImage(pictureBox1.Image, new RectangleF(new Point(0, 20), new Size(1050, 1500)), new RectangleF(new Point(0, (pageCountTmp - PageCount) * 1500), new Size(1050, 1500)), GraphicsUnit.Pixel);if (PageCount == 1) { e.HasMorePages = false;//结束分页及打印 } } PageCount--;//计数 } else//单页 { e.Graphics.DrawImage(pictureBox1.Image, new Rectangle(new Point(0, 20), new Size(int.Parse(Math.Round(pictureBox1.Image.Width * 0.8).ToString()), int.Parse(Math.Round(pictureBox1.Image.Height * 0.8).ToString())))); } }//关闭按钮事件 private void btnClose_Click(object sender, EventArgs e) { this.Close(); this.Dispose(); }//打印按钮事件:调用打印方法 private void btn_Click(object sender, EventArgs e) { printDocument1.Print(); this.Visible = false; this.Height = 0; this.Width = 0; Dispose(true); } } }如果想不使用ActiveX实现客户端截图打印,而是在页面后台接收需要打印的页面URL,使用WebBrowser的DrawToBitmap方法实现截图,会遇到两个问题。即:“GDI+中发生一般性错误”、“对COM 组件的调用返回了错误 HRESULT E_FAIL”。
详见我的优快云问题贴:http://topic.youkuaiyun.com/u/20101012/18/a750440e-f472-497f-b666-d1b420ae8f7c.html。
另外,当你需要打印的页面中有VML图或者AJAX效果,或者在页面加载完成之后使用脚本修改过页面的效果的时候,后台方法中的Complete状态判断并不能保证截图时页面已经是最终的显示效果,所以截图效果会与页面的实践显示效果有较大差异,甚至截图为空白。
而使用ActiveX控件,当页面加载完时“启动控件按钮”可用,单击按钮之后触发截图方法,在客户端完成截图和打印(不生成图片且截图与页面实际显示的效果一致),同时还可可避免以上问题。
补充:
被截图的页面必需是不需要登录即可查看的页面;
该控件在客户端运行,需要.NET Framework的支持, 最好做成基于.NET Framework2.0,因为高版本的.NET Framework文件很大;
本控件的实现初衷是为了打印页面中VML实现的图,因为VML不支持web打印,且实际验证发现jQuery的区域打印即类似$("div#printAreaDiv").printArea();这样的jQuery方法打印的是整个页面,且与页面实际显示的效果有差异(页面中有AJAX或者页面加载完之后有使用脚本对页面进行过修改的情况);
关于ActiveX调用脚本方法,可参考:http://www.cnblogs.com/xiaoshatian/archive/2008/09/02/1281786.html;
关于怎么制作安装文件,本篇文章给出的第一个链接里“5.发布”部分有详细的介绍;
控件使用示例:
HTML:
< div > < object id ="UserControlObj" name ="UserControlObj" classid ="clsid:1161E5A8-B698-4E57-8B56-B5B06B69FF4D" width ="950" height ="55" > </ object > </ div >脚本:
var strUrl = "" ; var strPar = " 2 " ; strUrl = window.location.href.split( ' = ' )[ 0 ].replace( " RoomInfoDetail.aspx?&RM_ID " , " RoomInfoPrint.aspx?rid= " + window.location.search.split( ' = ' )[ 1 ]); document.all.UserControlObj.SetUrlText(strUrl, strPar);控件代码已经打包上传,下载链接:EstatePrintMapActiveX.rar
文章结尾分享一下优快云上ActiveX控件开发的讨论帖:
http://topic.youkuaiyun.com/u/20101028/11/085a5e12-ab46-4de5-8860-07234638b57b.html