Hey everyone,
I've found some example code on how to create Leaderline and have been playing around with it. So far so good, but when I create my leaderline and the Mtext generates, it is always preceeded by an "OK" and i can't figure out where it's coming from. I've tried using TrimStart on a number of the strings to no avail. I know it must be something insanely simple but it can't seem to get it. Any input would be awesome!
using Autodesk.AutoCAD.Runtime;
using Autodesk.AutoCAD.ApplicationServices;
using Autodesk.AutoCAD.DatabaseServices;
using Autodesk.AutoCAD.EditorInput;
using Autodesk.AutoCAD.Geometry;
namespace DimensionLibrary
{
public class DimensionCommands
{
static ObjectId GetArrowObjectId(string newArrName)
{
ObjectId arrObjId = ObjectId.Null;
Document doc = Application.DocumentManager.MdiActiveDocument;
Database db = doc.Database;
// Get the current value of DIMBLK
string oldArrName = Application.GetSystemVariable("DIMBLK") as string;
// Set DIMBLK to the new style
// (this action may create a new block)
Application.SetSystemVariable("DIMBLK", newArrName);
// Reset the previous value of DIMBLK
if (oldArrName.Length != 0)
Application.SetSystemVariable("DIMBLK", oldArrName);
// Now get the objectId of the block
Transaction tr = db.TransactionManager.StartTransaction();
using (tr)
{
BlockTable bt = (BlockTable)tr.GetObject(db.BlockTableId, OpenMode.ForRead);
arrObjId = bt[newArrName];
tr.Commit();
}
return arrObjId;
}
[CommandMethod("MLTEST")]
static public void CreateMultiLeader()
{
Document doc = Application.DocumentManager.MdiActiveDocument;
Editor ed = doc.Editor;
Database db = doc.Database;
string bname = "";
string bx = "";
string by = "";
string bz = "";
const string arrowName = "_DOT";
ObjectId arrId = GetArrowObjectId(arrowName);
////////////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////////////
PromptEntityOptions options = new PromptEntityOptions("\nSelect block reference");
options.SetRejectMessage("\nSelect only block reference");
options.AddAllowedClass(typeof(BlockReference), false);
PromptEntityResult acSSPrompt = ed.GetEntity(options);
using (Transaction tx = db.TransactionManager.StartTransaction())
{
BlockReference blockRef = tx.GetObject(acSSPrompt.ObjectId, OpenMode.ForRead) as BlockReference;
BlockTableRecord block = null;
if (blockRef.IsDynamicBlock)
{
block = tx.GetObject(blockRef.BlockTableRecord,
OpenMode.ForRead) as BlockTableRecord;
if (block.IsAnonymous)
{
//get the real dynamic block name.
block =
tx.GetObject(blockRef.DynamicBlockTableRecord,
OpenMode.ForRead) as BlockTableRecord;
}
}
else
{
block = tx.GetObject(blockRef.BlockTableRecord,
OpenMode.ForRead) as BlockTableRecord;
}
if (block != null)
{
bname = block.Name;
bx = acSSPrompt.PickedPoint.X.ToString();
by = acSSPrompt.PickedPoint.Y.ToString();
bz = acSSPrompt.PickedPoint.Z.ToString();
ed.WriteMessage("Block name is : " + block.Name + "\n");
ed.WriteMessage("X is :" + bx + "\n");
ed.WriteMessage("Y is :" + by + "\n");
ed.WriteMessage("Z is :" + bz + "\n");
}
tx.Commit();
// Get the start point of the leader
PromptPointResult result = ed.GetPoint("\nSpecify leader arrowhead location: ");
if (result.Status != PromptStatus.OK)
return;
Point3d startPt = result.Value;
// Get the end point of the leader
PromptPointOptions opts = new PromptPointOptions("\nSpecify landing location: ");
opts.BasePoint = startPt;
opts.UseBasePoint = true;
result = ed.GetPoint(opts);
if (result.Status != PromptStatus.OK)
return;
Point3d endPt = result.Value;
////////////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////////////
Transaction tr = db.TransactionManager.StartTransaction();
using (tr)
{
try
{
BlockTable bt = (BlockTable)tr.GetObject(db.BlockTableId, OpenMode.ForRead);
BlockTableRecord btr = (BlockTableRecord)tr.GetObject(bt[BlockTableRecord.ModelSpace], OpenMode.ForWrite);
// Create the MLeader
MLeader mld = new MLeader();
int ldNum = mld.AddLeader();
int lnNum = mld.AddLeaderLine(ldNum);
mld.AddFirstVertex(lnNum, startPt);
mld.AddLastVertex(lnNum, endPt);
mld.ArrowSymbolId = arrId;
mld.LeaderLineType = LeaderType.SplineLeader;
// Create the MText
MText mt = new MText();
PromptStringOptions psopts = new PromptStringOptions("Please input a label for your leader line");
psopts.DefaultValue = bname + "\n" + "X:" + bx + "\n" + "Y:" + by + "\n" + "Z:" + bz;
PromptResult pres = ed.GetString(psopts);
mt.Contents = pres.ToString();
mt.Location = endPt;
mld.ContentType = ContentType.MTextContent;
mld.MText = mt;
// Add the MLeader
btr.AppendEntity(mld);
tr.AddNewlyCreatedDBObject(mld, true);
//Commit the transaction
tr.Commit();
}
catch
{
// Would also happen automatically
// if we didn't commit
tr.Abort();
}
}
}
}
}
}
