【原文】
1 using Autodesk.AutoCAD.ApplicationServices;
2 using Autodesk.AutoCAD.DatabaseServices;
3 using Autodesk.AutoCAD.EditorInput;
4 using Autodesk.AutoCAD.Runtime;
5
6 // 此行不是强制性的，但可以提高装载性能
7 [assembly: CommandClass(typeof(监视用户是保存用户编辑还是放弃参照编辑.XrefLongTrans))]
8
9 namespace 监视用户是保存用户编辑还是放弃参照编辑 10 { 11 public class XrefLongTrans 12 { 13 enum EditInPlaceXrefState 14 { 15 Discarded, 16 Saved 17 }; 18 19 static EditInPlaceXrefState state = EditInPlaceXrefState.Discarded; 20 21 [CommandMethod("WatchXref")] 22 public void WatchXref() 23 { 24 Document doc = Application.DocumentManager.MdiActiveDocument; 25 if (doc == null) return; 26 Editor ed = doc.Editor; 27 LongTransactionManager longTranMan = Application.LongTransactionManager; 28 longTranMan.CheckedIn += TrMan_CheckedIn; 29 longTranMan.Aborted += TrMan_Aborted; 30 doc.CommandEnded += Doc_CommandEnded; 31 } 32 [CommandMethod("UnWatchXref")] 33 public void UnWatchXref() 34 { 35 Document doc = Application.DocumentManager.MdiActiveDocument; 36 if (doc == null) return; 37 Editor ed = doc.Editor; 38 LongTransactionManager longTranMan = Application.LongTransactionManager; 39 longTranMan.CheckedIn -= TrMan_CheckedIn; 40 longTranMan.Aborted -= TrMan_Aborted; 41 doc.CommandEnded -= Doc_CommandEnded; 42 } 43 44 private void TrMan_Aborted(object sender, LongTransactionEventArgs e) 45 { 46 Document doc = Application.DocumentManager.MdiActiveDocument; 47 if (doc == null) return; 48 Editor ed = doc.Editor; 49 if (e.Transaction.Type == LongTransactionType.XRefDb) 50 { 51 ed.WriteMessage("\nLong transaction {0} aborted\n", e.Transaction.LongTransactionName); 52 state = EditInPlaceXrefState.Discarded; 53 } 54 } 55 56 private void TrMan_CheckedIn(object sender, LongTransactionEventArgs e) 57 { 58 Document doc = Application.DocumentManager.MdiActiveDocument; 59 if (doc == null) return; 60 Editor ed = doc.Editor; 61 if (e.Transaction.Type == LongTransactionType.XRefDb) 62 { 63 ed.WriteMessage("\nLong transaction {0} commited\n", e.Transaction.LongTransactionName); 64 state = EditInPlaceXrefState.Saved; 65 } 66 } 67 68 private void Doc_CommandEnded(object sender, CommandEventArgs e) 69 { 70 if (e.GlobalCommandName.ToUpper() == "REFCLOSE") 71 { 72 Document doc = Application.DocumentManager.MdiActiveDocument; 73 if (doc == null) return; 74 Editor ed = doc.Editor; 75 ed.WriteMessage("\nModification of XREF {0}\n", (state == EditInPlaceXrefState.Saved) ? "Saved" : "Discarded"); 76 } 77 } 78 } 79 }