创建多行文本 （.NET）

要创建多行文本对象，可以先创建对象的实例，然后将其添加到表示模型或图纸空间的块表记录中。对象构造函数不采用任何参数。创建对象的实例后，可以使用其属性为其分配文本字符串、插入点和宽度以及其他值。可以更改的其他属性会影响对象的文本高度、对齐方式、旋转角度和文本样式，或将字符格式应用于所选字符MTextMTextMText

创建多行文本对象

下面的示例在模型空间中坐标 （2， 2， 0） 处创建一个对象。MText

Imports Autodesk.AutoCAD.Runtime
Imports Autodesk.AutoCAD.ApplicationServices
Imports Autodesk.AutoCAD.DatabaseServices
Imports Autodesk.AutoCAD.Geometry
 
<CommandMethod("CreateMText")> _
Public Sub CreateMText()
    '' 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 multiline text object
        Using acMText As MText = New MText()
            acMText.Location = New Point3d(2, 2, 0)
            acMText.Width = 4
            acMText.Contents = "This is a text string for the MText object."

            acBlkTblRec.AppendEntity(acMText)
            acTrans.AddNewlyCreatedDBObject(acMText, True)
        End Using

        '' Save the changes and dispose of the transaction
        acTrans.Commit()
    End Using
End Sub

using Autodesk.AutoCAD.Runtime;
using Autodesk.AutoCAD.ApplicationServices;
using Autodesk.AutoCAD.DatabaseServices;
using Autodesk.AutoCAD.Geometry;
 
[CommandMethod("CreateMText")]
public static void CreateMText()
{
    // 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 multiline text object
        using (MText acMText = new MText())
        {
            acMText.Location = new Point3d(2, 2, 0);
            acMText.Width = 4;
            acMText.Contents = "This is a text string for the MText object.";

            acBlkTblRec.AppendEntity(acMText);
            acTrans.AddNewlyCreatedDBObject(acMText, true);
        }

        // Save the changes and dispose of the transaction
        acTrans.Commit();
    }
}

Sub CreateMText()
    Dim mtextObj As AcadMText
    Dim insertPoint(0 To 2) As Double
    Dim width As Double
    Dim textString As String
 
    insertPoint(0) = 2
    insertPoint(1) = 2
    insertPoint(2) = 0
    width = 4
    textString = "This is a text string for the mtext object."
 
    ' Create a text Object in model space
    Set mtextObj = ThisDrawing.ModelSpace. _
                       AddMText(insertPoint, width, textString)
    ZoomAll
End Sub