The text generation flag specifies if text is displayed backwards or upside-down. Use the FlagBits property to define if a text style controls the display of text to be displayed backwards or upside-down, or use the IsMirroredInX and IsMirroredInY properties of a text object to control individually control a text object.
Set FlagBits to 2 if you want text to be displayed backwards and 4 if it should be displayed upside-down. Use a value of 6 to display text both backwards and upside-down. If you are modifying a text object, set IsMirroredInX to TRUE if you want the text to appear backwards and set IsMirroredInY to TRUE if you want it to be displayed upside-down.
Display text backwards
The following example creates a single-line text object, then sets it to be displayed backwards using the IsMirroredInX property.
VB.NET
Imports Autodesk.AutoCAD.Runtime
Imports Autodesk.AutoCAD.ApplicationServices
Imports Autodesk.AutoCAD.DatabaseServices
Imports Autodesk.AutoCAD.Geometry
<CommandMethod("BackwardsText")> _
Public Sub BackwardsText()
'' Get the current document and database
Dim acDoc As Document = Application.DocumentManager.MdiActiveDocument
Dim acCurDb As Database = acDoc.Database
'' Start a transaction
Using acTrans As Transaction = acCurDb.TransactionManager.StartTransaction()
'' Open the Block table for read
Dim acBlkTbl As BlockTable
acBlkTbl = acTrans.GetObject(acCurDb.BlockTableId, _
OpenMode.ForRead)
'' Open the Block table record Model space for write
Dim acBlkTblRec As BlockTableRecord
acBlkTblRec = acTrans.GetObject(acBlkTbl(BlockTableRecord.ModelSpace), _
OpenMode.ForWrite)
'' Create a single-line text object
Using acText As DBText = New DBText()
acText.Position = New Point3d(3, 3, 0)
acText.Height = 0.5
acText.TextString = "Hello, World."
'' Display the text backwards
acText.IsMirroredInX = True
acBlkTblRec.AppendEntity(acText)
acTrans.AddNewlyCreatedDBObject(acText, True)
End Using
'' Save the changes and dispose of the transaction
acTrans.Commit()
End Using
End Sub
C#
using Autodesk.AutoCAD.Runtime;
using Autodesk.AutoCAD.ApplicationServices;
using Autodesk.AutoCAD.DatabaseServices;
using Autodesk.AutoCAD.Geometry;
[CommandMethod("BackwardsText")]
public static void BackwardsText()
{
// Get the current document and database
Document acDoc = Application.DocumentManager.MdiActiveDocument;
Database acCurDb = acDoc.Database;
// Start a transaction
using (Transaction acTrans = acCurDb.TransactionManager.StartTransaction())
{
// Open the Block table for read
BlockTable acBlkTbl;
acBlkTbl = acTrans.GetObject(acCurDb.BlockTableId,
OpenMode.ForRead) as BlockTable;
// Open the Block table record Model space for write
BlockTableRecord acBlkTblRec;
acBlkTblRec = acTrans.GetObject(acBlkTbl[BlockTableRecord.ModelSpace],
OpenMode.ForWrite) as BlockTableRecord;
// Create a single-line text object
using (DBText acText = new DBText())
{
acText.Position = new Point3d(3, 3, 0);
acText.Height = 0.5;
acText.TextString = "Hello, World.";
// Display the text backwards
acText.IsMirroredInX = true;
acBlkTblRec.AppendEntity(acText);
acTrans.AddNewlyCreatedDBObject(acText, true);
}
// Save the changes and dispose of the transaction
acTrans.Commit();
}
}
