Spread Windows Forms 13.0 Product Documentation
FarPoint.Win.Spread Assembly / FarPoint.Win.Spread.CellType Namespace / IRenderer Interface / CanBeOverflown Method

In This Topic
    CanBeOverflown Method (IRenderer)
    In This Topic
    Determines whether adjacent cells can overflow into this cell.
    Function CanBeOverflown() As Boolean
    Dim instance As IRenderer
    Dim value As Boolean
    value = instance.CanBeOverflown()
    bool CanBeOverflown()

    Return Value

    Boolean: true if cell can be overflowed into; false otherwise
    This example subclasses the IRenderer class and creates a custom renderer for the first cell in the spreadsheet to illustrate the use of the methods and events.
    public static CheckBox ck = new CheckBox();
    class myRenderer : FarPoint.Win.Spread.CellType.IRenderer
      public bool CanOverflow()
          return true;
      public bool CanBeOverflown()
          return true;
      public Size GetPreferredSize(Graphics g, Size s, FarPoint.Win.Spread.Appearance appr, object value, float zoom)
          s = new Size(50, 50);
          return s;
      public void PaintCell(Graphics g, Rectangle r, FarPoint.Win.Spread.Appearance appr, object value, bool issel, bool islocked,
    float zoom) 
          string s;
          ck.CheckState = CheckState.Checked;
          s = ck.CheckState.ToString();
          Font f = new Font("MS Sans Serif", 10);
          appr.BackColor = Color.Red;
          appr.ForeColor = Color.Yellow;
          appr.Font = f;
          Brush b, b1;
          b = new SolidBrush(appr.BackColor);
          b1 = new SolidBrush(appr.ForeColor);
          g.FillRectangle(b, r);
          g.DrawString(s, appr.Font, b1, r);
    private void Form1_Load(object sender, System.EventArgs e)
          fpSpread1.ActiveSheet.Cells[0, 0].Renderer = new myRenderer();
    Shared ck As New CheckBox()
    Public Class myRenderer
    Implements FarPoint.Win.Spread.CellType.IRenderer
    Public Function CanBeOverflown() As Boolean Implements FarPoint.Win.Spread.CellType.IRenderer.CanBeOverflown
          Return True
    End Function
    Public Function CanOverflow() As Boolean Implements FarPoint.Win.Spread.CellType.IRenderer.CanOverflow
          Return True
    End Function
    Public Function GetPreferredSize(ByVal g As Graphics, ByVal s As Size, ByVal appr As FarPoint.Win.Spread.Appearance, ByVal
    value As Object, ByVal zoom As Single) As Size Implements FarPoint.Win.Spread.CellType.IRenderer.GetPreferredSize
          s = New Size(50, 50)
          Return s
    End Function
    Public Sub PaintCell(ByVal g As Graphics, ByVal r As Rectangle, ByVal appr As FarPoint.Win.Spread.Appearance, ByVal Value
    As Object, ByVal issel As Boolean, ByVal islocked As Boolean, ByVal zoom As Single) Implements FarPoint.Win.Spread.CellType.IRenderer.PaintCell
          Dim s As String
          ck.CheckState = CheckState.Checked
          s = ck.CheckState.ToString()
          Dim f As New Font("MS Sans Serif", 10)
          appr.BackColor = Color.Red
          appr.ForeColor = Color.Yellow
          appr.Font = f
          Dim b, b1 As Brush
          b = New SolidBrush(appr.BackColor)
          b1 = New SolidBrush(appr.ForeColor)
          g.FillRectangle(b, r)
          g.DrawString(s, appr.Font, b1, r.X, r.Y)
    End Sub
    End Class
    Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
          FpSpread1.ActiveSheet.Cells(0, 0).Renderer = New myRenderer()
    End Sub
    See Also