Public Overloads Overrides Function GetPreferredSize( _
   ByVal editor As Control _
) As Size

Dim instance As RichTextCellType
Dim editor As Control
Dim value As Size
 
value = instance.GetPreferredSize(editor)

public override Size GetPreferredSize( 
   Control editor
)

FarPoint.Win.Spread.CellType.RichTextCellType rtb;

private void Form1Load(object sender, System.EventArgs e)
{
      rtb = new FarPoint.Win.Spread.CellType.RichTextCellType();
      rtb.Multiline = true;
      fpSpread1.ActiveSheet.Cells[0, 0].CellType = rtb;
      System.IO.StreamReader file = new System.IO.StreamReader(Application.StartupPath + "\\test.rtf");
      string words = file.ReadToEnd();
      fpSpread1.ActiveSheet.Cells[0, 0].Value = words;
}

private void fpSpread1EditModeOn(object sender, System.EventArgs e)
{
      Size s;
      s = rtb.GetPreferredSize(fpSpread1.EditingControl);
      MessageBox.Show("The width of the editor is " + s.Width.ToString());
}

Dim rtb As New FarPoint.Win.Spread.CellType.RichTextCellType

Private Sub Form1Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
      rtb.Multiline = True
      FpSpread1.ActiveSheet.Cells(0, 0).CellType = rtb
      Dim file As New System.IO.StreamReader(Application.StartupPath & "\test.rtf")
      Dim words As String = file.ReadToEnd()
      FpSpread1.ActiveSheet.Cells(0, 0).Value = words
End Sub

Private Sub FpSpread1EditModeOn(ByVal sender As Object, ByVal e As System.EventArgs) Handles FpSpread1.EditModeOn
      Dim s As Size
      s = rtb.GetPreferredSize(FpSpread1.EditingControl)
      MessageBox.Show("The width of the editor is " & s.Width.ToString())
End Sub