Teechart + Word Wrap for legend

Question

我正在绘制一个趋势图表（行），但在我的情况下，图例文本非常大，所以我可以用任何方式对文字进行自动换行。

Answer 1

我认为您可以使用此link中可以找到的字符串函数来操作系列的标题并尝试减少它们的长度。我已经提出了一个我认为可以帮助您实现的建议代码：

Private Sub Form_Load()
    TChart1.Aspect.View3D = False
    TChart1.AddSeries scLine
    TChart1.AddSeries scLine
    Dim i As Integer
    TChart1.Series(0).AddXY 0, 30, "", clTeeColor
    TChart1.Series(0).AddXY 10, 100, "", clTeeColor
    TChart1.Series(1).AddXY 0, 50, "", clTeeColor
    TChart1.Series(1).AddXY 50, 120, "", clTeeColor
    TChart1.Series(0).Title = "DDDDAAAAFFFFLLLLRRRRSSSS"
    TChart1.Series(1).Title = "AAAALLLLSSSSTTTTEEEERRRR"
    SeriesTitleWarp TChart1.SeriesCount
End Sub

Private Sub SeriesTitleWarp(ByVal count As Long)
'Replace some chars of string title to ...
    Dim i As Integer
        For i = 0 To count - 1
            'Calculate the size of string
            Dim LenString As Integer
            LenString = Len(TChart1.Series(i).Title)
            'First replace the Left chars for ...
            Dim TitleString As String
            TitleString = TChart1.Series(i).Title
            Mid$(TitleString, 10, 3) = "..."
            'After cut the string
            TitleString = Left(TitleString, 12)
            'Assign new title to series.
            TChart1.Series(i).Title = TitleString
    Next i
End Sub

修改您的要求，我建议您使用另一种方法来减少图例文本，但系列标题保持不变。您能否检查下一个代码是否可以正常工作？

Private Sub Form_Load()
    TChart1.Aspect.View3D = False
    TChart1.AddSeries scLine
    TChart1.AddSeries scLine
    Dim i As Integer
    TChart1.Series(0).AddXY 0, 30, "", clTeeColor
    TChart1.Series(0).AddXY 10, 100, "", clTeeColor
    TChart1.Series(1).AddXY 0, 50, "", clTeeColor
    TChart1.Series(1).AddXY 50, 120, "", clTeeColor
    TChart1.Series(0).Title = "DDDDAAAAFFFFLLLLRRRRSSSS"
    TChart1.Series(1).Title = "AAAALLLLSSSSTTTTEEEERRRR"
  '  TChart1.Legend.ShapeBounds.Right = 100
    TChart1.Legend.Left = 100
    TChart1.Legend.CustomPosition = True
    TChart1.Legend.Width = 100
End Sub

Private Sub TChart1_OnGetLegendText(ByVal LegendStyle As Long, ByVal ValueIndex As Long, LegendText As String)
        If ValueIndex <> -1 Then
            'Calculate the size of string
            Dim LenString As Integer
            LenString = Len(TChart1.Series(ValueIndex).Title)
            'First replace the Left chars for ...
            Dim TitleString As String
            TitleString = TChart1.Series(ValueIndex).Title
            Mid$(TitleString, 10, 3) = "..."
            'After cut the string
            TitleString = Left(TitleString, 12)
            'Assign new text to LegendText
            LegendText = TitleString
        End If
End Sub

我希望能有所帮助。

感谢。