Spread Windows Forms 12.0 Product Documentation
CanBeOverflown Method (IRenderer)

FarPoint.Win.Spread Assembly > FarPoint.Win.Spread.CellType Namespace > IRenderer Interface : CanBeOverflown Method
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


IRenderer Interface
IRenderer Members