\u3000\u3000GetPoint \u65b9\u6cd5\u63d0\u793a\u7528\u6237\u5728 AutoCAD \u547d\u4ee4\u63d0\u793a\u4e0b\u7ed9\u51fa\u70b9\u7684\u5b9a\u4e49\u3002PromptPointOptions \u5bf9\u8c61\u5141\u8bb8\u7528\u6237\u63a7\u5236\u8f93\u5165\u548c\u5982\u4f55\u663e\u793a\u63d0\u793a\u4fe1\u606f\u3002PromptPointOptions \u5bf9\u8c61\u7684 UseBasePoint \u548c BasePoint \u5c5e\u6027\u63a7\u5236\u662f\u5426\u4ece\u57fa\u70b9\u7ed8\u5236\u4e00\u6761\u6a61\u76ae\u7ebf\u3002PromptPointOptions \u5bf9\u8c61\u7684 Keywords \u5c5e\u6027\u5141\u8bb8\u7528\u6237\u5b9a\u4e49\u7528\u6237\u53ef\u4ee5\u5728\u547d\u4ee4\u63d0\u793a\u4e2d\u8f93\u5165\u9664\u6307\u5b9a\u70b9\u5916\u7684\u5173\u952e\u5b57\u3002 <\/p>\n
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\u3000\u3000\u4e0b\u9762\u7684\u6837\u4f8b\u63d0\u793a\u7528\u6237\u8f93\u5165\u4e24\u4e2a\u70b9\uff0c\u7136\u540e\u4ee5\u8fd9\u4e24\u4e2a\u70b9\u4e3a\u8d77\u70b9\u548c\u7aef\u70b9\u7ed8\u5236\u4e00\u6761\u76f4\u7ebf\uff08\u8be5\u4f8b\u5b50\u6839\u636e\u7528\u6237\u70b9\u51fb\u9f20\u6807\uff0c\u83b7\u53d6\u7528\u6237\u9009\u5b9a\u7684\u70b9\uff09 <\/p>\n
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namespace ClassLibrary3; \r\ninterface \r\nuses \r\n Autodesk.AutoCAD.Runtime, Autodesk.AutoCAD.ApplicationServices,Autodesk.AutoCAD.EditorInput, \r\n Autodesk.AutoCAD.DatabaseServices,Autodesk.AutoCAD.Geometry; \r\ntype \r\n Class1 =public class \r\n private \r\n public \r\n [CommandMethod('GetPointsFromUser')] \r\n class method GetPointsFromUser; \r\n end; \r\nimplementation \r\nclass method Class1.GetPointsFromUser; \r\nvar \r\n acDoc:Document; \r\n acCurDb:Database; \r\n pPtRes:PromptPointResult; \r\n pPtOpts:PromptPointOptions; \r\n ptStart:Point3d; \r\n ptEnd:Point3d; \r\n acTrans:Transaction; \r\n acBlkTbl:BlockTable; \r\n acBlkTblRec:BlockTableRecord; \r\n acLine:Line; \r\nbegin \r\n \/\/\u83b7\u5f97\u5f53\u524d\u6570\u636e\u5e93\u5e76\u542f\u52a8\u4e8b\u52a1\u7ba1\u7406\u5668 Get the current database and start the Transaction Manager \r\n acDoc:= Application.DocumentManager.MdiActiveDocument; \r\n acCurDb:= acDoc.Database; \r\n pPtOpts:= New PromptPointOptions(''); \r\n \/\/\u63d0\u793a\u5f00\u59cb\u70b9 Prompt for the start point \r\n pPtOpts.Message := #13+ 'Enter the start point of the line: '; \r\n pPtRes := acDoc.Editor.GetPoint(pPtOpts); \r\n ptStart:= pPtRes.Value; \r\n \/\/\u5982\u679c\u7528\u6237\u6309\u4e86 ESC \u952e\u6216\u53d6\u6d88\u4e86\u547d\u4ee4\u5c31\u9000\u51fa Exit if the user presses ESC or cancels the command \r\n If pPtRes.Status = PromptStatus.Cancel Then Exit; \r\n \/\/\u63d0\u793a\u7ed3\u675f\u70b9 \r\n pPtOpts.Message :=#13+'Enter the end point of the line:'; \r\n pPtOpts.UseBasePoint:=True; \r\n pPtOpts.BasePoint:=ptStart; \r\n pPtRes := acDoc.Editor.GetPoint(pPtOpts); \r\n ptEnd:= pPtRes.Value; \r\n If pPtRes.Status = PromptStatus.Cancel Then Exit; \r\n \/\/\u542f\u52a8\u4e00\u4e2a\u4e8b\u52a1 \r\n try \r\n acTrans:= acCurDb.TransactionManager.StartTransaction; \r\n \/\/\u4ee5\u5199\u7684\u65b9\u5f0f\u6253\u5f00\u6a21\u578b\u7a7a\u95f4 \r\n acBlkTbl := acTrans.GetObject(acCurDb.BlockTableId,OpenMode.ForRead) as BlockTable; \r\n acBlkTblRec := acTrans.GetObject(acBlkTbl[BlockTableRecord.ModelSpace], OpenMode.ForWrite) as BlockTableRecord; \r\n \/\/\u5b9a\u4e49\u65b0\u7684\u76f4\u7ebf \r\n acLine:= New Line(ptStart, ptEnd); \r\n acLine.SetDatabaseDefaults; \r\n \/\/\u6dfb\u52a0\u76f4\u7ebf\u5230\u56fe\u5f62\u4e2d\u53bb \r\n acBlkTblRec.AppendEntity(acLine); \r\n acTrans.AddNewlyCreatedDBObject(acLine, True); \r\n \/\/\u7f29\u653e\u5230\u56fe\u5f62\u7684\u8303\u56f4\u6216\u754c\u9650 \r\n acDoc.SendStringToExecute('._zoom _all ', True, False, False); \r\n finally \r\n \/\/\u63d0\u4ea4\u4fee\u6539\u5e76\u9500\u6bc1\u4e8b\u52a1 \r\n acTrans.Commit; \r\n end; \r\nend; \r\nend.<\/pre>\n<\/p>\n
\u3000\u3000\u540e\u8bb0\uff1a\u5728\u7ffb\u8bd1\u8fd9\u4e00\u6bb5\u4ee3\u7801\u7684\u8fc7\u7a0b\u4e2d\uff0c\u51fa\u73b0\u4e86\u4e00\u4e2a\u975e\u59d4\u6258\u7684\u9519\u8bef\uff0c\u539f\u56e0\u662f\u6211\u5728\u7ffb\u8bd1\u7684\u65f6\u5019\u5c06\u4e0b\u4e24\u884c\u4ee3\u7801 <\/p>\n
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acBlkTbl := acTrans.GetObject(acCurDb.BlockTableId,OpenMode.ForRead) as BlockTable; <\/p>\n
acBlkTblRec := acTrans.GetObject(acBlkTbl[BlockTableRecord.ModelSpace],OpenMode.ForWrite) as BlockTableRecord; <\/p>\n
\u4e2d\u7684as BlockTable\u548cas BlockTableRecord\u4e24\u4e2a\u8fd0\u7b97\u53bb\u6389\uff0c\u52a0\u4e0a\u8fd9\u4e24\u4e2a\u4ee5\u540e\u5c31\u6b63\u5e38\u4e86\u3002 <\/p>\n
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