public bool StartDraw(out bool status)
{
status = false;
Editor ed = Application.DocumentManager.MdiActiveDocument.Editor;
Database db = HostApplicationServices.WorkingDatabase;
if (this.startPoint == null)
{
PromptPointOptions opt = new PromptPointOptions("\n 选择管道的初始点");
PromptPointResult res = ed.GetPoint(opt);
if (res.Status == PromptStatus.Cancel)
{
status = true;
}
if (res.Status != PromptStatus.OK)
{
return(false);
}
this.startPoint = res.Value;
}
mline = new Mline();
using (Transaction tr = db.TransactionManager.StartTransaction())
{
DBDictionary mlineStyleDic = (DBDictionary)tr.GetObject(db.MLStyleDictionaryId, OpenMode.ForRead);
mline.Style = mlineStyleDic.GetAt("MLINEJIG");
}
mline.Normal = Vector3d.ZAxis;
mline.Scale = PipeLine.GetScale();
mline.AppendSegment((Point3d)this.startPoint);
mline.AppendSegment((Point3d)this.startPoint);
PromptResult res2 = ed.Drag(this);
if (res2.Status == PromptStatus.OK)
{
return(true);
}
else if (res2.Status == PromptStatus.Cancel || res2.Status == PromptStatus.None)
{
if (res2.Status == PromptStatus.Cancel)
{
status = true;
}
return(false);
}
return(true);
}
