对齐单行文本 （.NET）

您可以水平和垂直对齐单行文本。左对齐是默认设置。若要设置水平和垂直对齐选项，请使用 and 属性。HorizontalModeVerticalMode

通常，当关闭文本对象时，会根据其对齐方式和文本样式调整文本对象的位置和对齐点。但是，内存中文本对象的对齐方式不会自动更新。调用该方法以根据文本对象的当前属性值更新其对齐方式。AdjustAlignment

重新对齐文本

下面的示例创建一个单行文本 （） 对象和一个点 （） 对象。点对象设置为文本对齐点，并更改为红色十字准线，使其可见。更改文本对齐方式并显示一个消息框，以便停止宏执行。这使您可以查看更改文本对齐方式的影响。DBTextDBPoint

Imports Autodesk.AutoCAD.Runtime
Imports Autodesk.AutoCAD.ApplicationServices
Imports Autodesk.AutoCAD.DatabaseServices
Imports Autodesk.AutoCAD.Geometry
 
<CommandMethod("TextAlignment")> _
Public Sub TextAlignment()
    '' 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)

        Dim textString(0 To 2) As String
        textString(0) = "Left"
        textString(1) = "Center"
        textString(2) = "Right"

        Dim textAlign(0 To 2) As Integer
        textAlign(0) = TextHorizontalMode.TextLeft
        textAlign(1) = TextHorizontalMode.TextCenter
        textAlign(2) = TextHorizontalMode.TextRight

        Dim acPtIns As Point3d = New Point3d(3, 3, 0)
        Dim acPtAlign As Point3d = New Point3d(3, 3, 0)

        Dim nCnt As Integer = 0

        For Each strVal As String In textString
            '' Create a single-line text object
            Using acText As DBText = New DBText()
                acText.Position = acPtIns
                acText.Height = 0.5
                acText.TextString = strVal

                '' Set the alignment for the text
                acText.HorizontalMode = textAlign(nCnt)

                If acText.HorizontalMode <> TextHorizontalMode.TextLeft Then
                    acText.AlignmentPoint = acPtAlign
                End If

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

            '' Create a point over the alignment point of the text
            Using acPoint As DBPoint = New DBPoint(acPtAlign)
                acPoint.ColorIndex = 1

                acBlkTblRec.AppendEntity(acPoint)
                acTrans.AddNewlyCreatedDBObject(acPoint, True)

                '' Adjust the insertion and alignment points
                acPtIns = New Point3d(acPtIns.X, acPtIns.Y + 3, 0)
                acPtAlign = acPtIns
            End Using

            nCnt = nCnt + 1
        Next

        '' Set the point style to crosshair
        Application.SetSystemVariable("PDMODE", 2)

        '' 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("TextAlignment")]
public static void TextAlignment()
{
    // 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;

        string[] textString = new string[3];
        textString[0] = "Left";
        textString[1] = "Center";
        textString[2] = "Right";

        int[] textAlign = new int[3];
        textAlign[0] = (int)TextHorizontalMode.TextLeft;
        textAlign[1] = (int)TextHorizontalMode.TextCenter;
        textAlign[2] = (int)TextHorizontalMode.TextRight;

        Point3d acPtIns = new Point3d(3, 3, 0);
        Point3d acPtAlign = new Point3d(3, 3, 0);

        int nCnt = 0;

        foreach (string strVal in textString)
        {
            // Create a single-line text object
            using (DBText acText = new DBText())
            {
                acText.Position = acPtIns;
                acText.Height = 0.5;
                acText.TextString = strVal;

                // Set the alignment for the text
                acText.HorizontalMode = (TextHorizontalMode)textAlign[nCnt];

                if (acText.HorizontalMode != TextHorizontalMode.TextLeft)
                {
                    acText.AlignmentPoint = acPtAlign;
                }

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

            // Create a point over the alignment point of the text
            using (DBPoint acPoint = new DBPoint(acPtAlign))
            {
                acPoint.ColorIndex = 1;

                acBlkTblRec.AppendEntity(acPoint);
                acTrans.AddNewlyCreatedDBObject(acPoint, true);

                // Adjust the insertion and alignment points
                acPtIns = new Point3d(acPtIns.X, acPtIns.Y + 3, 0);
                acPtAlign = acPtIns;
            }

            nCnt = nCnt + 1;
        }

        // Set the point style to crosshair
        Application.SetSystemVariable("PDMODE", 2);

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

Sub TextAlignment()
    ' Set the point style to crosshair
    ThisDrawing.SetVariable "PDMODE", 2
 
    Dim textObj As AcadText
    Dim pointObj As AcadPoint
 
    ' Define the text strings and insertion point for the text objects
    Dim textString(0 To 2) As String
    textString(0) = "Left"
    textString(1) = "Center"
    textString(2) = "Right"
 
    Dim textAlign(0 To 2) As Integer
    textAlign(0) = acAlignmentLeft
    textAlign(1) = acAlignmentCenter
    textAlign(2) = acAlignmentRight
 
    Dim insertionPoint(0 To 2) As Double
    insertionPoint(0) = 3: insertionPoint(1) = 0: insertionPoint(2) = 0
 
    Dim alignmentPoint(0 To 2) As Double
    alignmentPoint(0) = 3: alignmentPoint(1) = 0: alignmentPoint(2) = 0
 
    Dim nCnt As Integer
    For Each strVal In textString
        ' Create the Text object in model space
        Set textObj = ThisDrawing.ModelSpace. _
                        AddText(strVal, insertionPoint, 0.5)
 
        ' Set the alignment for the text
        textObj.Alignment = textAlign(nCnt)
 
        On Error Resume Next
        textObj.TextAlignmentPoint = alignmentPoint
 
        ' Create a point over the alignment point of the text
        Set pointObj = ThisDrawing.ModelSpace.AddPoint(alignmentPoint)
        pointObj.color = acRed
 
        ' Adjust the insertion and alignment points
        insertionPoint(1) = insertionPoint(1) + 3
        alignmentPoint(1) = insertionPoint(1)
 
        nCnt = nCnt + 1
    Next
End Sub