该示例中，在Revit启动时添加打印事件，在打印时向模型添加水印，打印完成后删除该水印。
#region Namespaces using System; using System.Collections.Generic; using Autodesk.Revit.ApplicationServices; using Autodesk.Revit.Attributes; using Autodesk.Revit.DB; using Autodesk.Revit.UI; #endregion namespace AutoStamp { [Transaction(TransactionMode.Manual)] [Regeneration(RegenerationOption.Manual)] [Journaling(JournalingMode.NoCommandData)] class App : IExternalApplication { EventsReactor m_eventsReactor; public Result OnStartup(UIControlledApplication a) { m_eventsReactor = new EventsReactor(); a.ControlledApplication.ViewPrinting+=new EventHandler<Autodesk.Revit.DB.Events.ViewPrintingEventArgs>(m_eventsReactor.AppViewPrinting); a.ControlledApplication.ViewPrinted += new EventHandler<Autodesk.Revit.DB.Events.ViewPrintedEventArgs>(m_eventsReactor.AppViewPrinted); return Result.Succeeded; } public Result OnShutdown(UIControlledApplication a) { m_eventsReactor.CloseLogFiles(); a.ControlledApplication.ViewPrinting -= new EventHandler<Autodesk.Revit.DB.Events.ViewPrintingEventArgs>(m_eventsReactor.AppViewPrinting); a.ControlledApplication.ViewPrinted -= new EventHandler<Autodesk.Revit.DB.Events.ViewPrintedEventArgs>(m_eventsReactor.AppViewPrinted); return Result.Succeeded; } } }
using System; using System.Collections.Generic; using System.Diagnostics; using System.IO; using System.Linq; using System.Text; using Autodesk.Revit; using Autodesk.Revit.DB; using Autodesk.Revit.DB.Events; namespace AutoStamp { public sealed class EventsReactor { private TextWriterTraceListener m_eventLog; string m_assemblyPath; ElementId m_newTextNoteId; public EventsReactor() { m_assemblyPath = Path.GetDirectoryName(System.Reflection.Assembly.GetExecutingAssembly().Location); } public void CloseLogFiles() { Trace.Flush(); Trace.Close(); Trace.Flush(); if (null != m_eventLog) { Trace.Listeners.Remove(m_eventLog); m_eventLog.Flush(); m_eventLog.Close(); } } public void AppViewPrinting(object sender, ViewPrintingEventArgs e) { if (null == m_eventLog) { SetupLogFiles(); } Trace.WriteLine(System.Environment.NewLine + "View Print Start: -----------------------------"); DumpEventArguments(e); bool faileOccur = false; try { string strText = string.Format("Printer Name: {0} {1}User Name: {2}", e.Document.PrintManager.PrinterName, System.Environment.NewLine, System.Environment.UserName); #if !(Debug || DEBUG) strText = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"; #endif Transaction eventTransaction = new Transaction(e.Document, "External Tool"); eventTransaction.Start(); TextNote newTextNote = e.Document.Create.NewTextNote( e.View, new XYZ(0, 0, 0), new XYZ(1, 0, 0), new XYZ(0, 1, 0), 1, TextAlignFlags.TEF_ALIGN_CENTER, strText ); eventTransaction.Commit(); if (null != newTextNote) { Trace.WriteLine("Create TextNote element successfully..."); m_newTextNoteId = new ElementId(newTextNote.Id.IntegerValue); } else { faileOccur = true; } } catch (Exception ex) { faileOccur = true; Trace.WriteLine("Exception occured when creating TextNote, print will be cancelled, ex: " + ex.Message); } finally { if (faileOccur && e.Cancellable) { e.Cancel(); } } } public void AppViewPrinted(object sender, ViewPrintedEventArgs e) { Trace.WriteLine(System.Environment.NewLine + "View Print End: ------"); DumpEventArguments(e); if (RevitAPIEventStatus.Cancelled != e.Status) { Transaction eventTransaction = new Transaction(e.Document, "External Tool"); eventTransaction.Start(); e.Document.Delete(m_newTextNoteId); eventTransaction.Commit(); Trace.WriteLine("Succeeded to delete the created TextNote element."); } } private void SetupLogFiles() { if (null != m_eventLog) { return; } string printEventsLogFile = Path.Combine(m_assemblyPath, "PrintEventsLog.txt"); if (File.Exists(printEventsLogFile)) { File.Delete(printEventsLogFile); } m_eventLog = new TextWriterTraceListener(printEventsLogFile); Trace.Listeners.Add(m_eventLog); Trace.AutoFlush = true; } private static void DumpEventArguments(RevitAPIEventArgs eventArgs) { if (eventArgs.GetType().Equals(typeof(ViewPrintingEventArgs))) { Trace.WriteLine("ViewPrintingEventArgs Parameters ----->"); ViewPrintingEventArgs args = eventArgs as ViewPrintingEventArgs; Trace.WriteLine(" TotalViews : " + args.TotalViews); Trace.WriteLine(" View Index : " + args.Index); Trace.WriteLine(" View Information : "); DumpViewInfo(args.View, " "); } else if (eventArgs.GetType().Equals(typeof(ViewPrintedEventArgs))) { Trace.WriteLine("ViewPrintedEventArgs Parameters ------>"); ViewPrintedEventArgs args = eventArgs as ViewPrintedEventArgs; Trace.WriteLine(" Event Status : " + args.Status); Trace.WriteLine(" TotalViews : " + args.Status); Trace.WriteLine(" View Index : " + args.Status); Trace.WriteLine(" View Information : "); } else { // no handling for other arguments } } private static void DumpViewInfo(View view, string prefix) { Trace.WriteLine(string.Format("{0} ViewName: {1}, ViewType: {2}", prefix, view.ViewName, view.ViewType)); } } }