Public Overloads Overridable Sub AddControl( _
   ByVal control As Control, _
   ByVal row As Integer, _
   ByVal column As Integer, _
   ByVal offsetX As Integer, _
   ByVal offsetY As Integer _
) 

Dim instance As SheetView
Dim control As Control
Dim row As Integer
Dim column As Integer
Dim offsetX As Integer
Dim offsetY As Integer
 
instance.AddControl(control, row, column, offsetX, offsetY)

public virtual void AddControl( 
   Control control,
   int row,
   int column,
   int offsetX,
   int offsetY
)

public class SpreadTextBox : TextBox, FarPoint.Win.Spread.DrawingSpace.IEmbeddedControlSupport 
{ 
 private FarPoint.Win.Spread.DrawingSpace.Moving moving = Moving.None; 
 private FarPoint.Win.Spread.DrawingSpace.Sizing sizing = Sizing.None; 
 private FarPoint.Win.Spread.DrawingSpace.ChildActivationPolicy activation = ChildActivationPolicy.DoubleClick; 

 public virtual FarPoint.Win.Spread.DrawingSpace.ChildActivationPolicy ActivationPolicy { 
   get { 
     return activation; 
   } 
   set { 
   } 
 } 

 public virtual FarPoint.Win.Spread.DrawingSpace.Moving CanMove { 
   get { 
     return moving; 
   } 
   set { 
     moving = value; 
   } 
 } 

 public virtual FarPoint.Win.Spread.DrawingSpace.Sizing CanSize { 
   get { 
     return sizing; 
   } 
   set { 
     sizing = value; 
   } 
 } 

 public void ControlPaint(Graphics g, Rectangle r, FarPoint.Win.Spread.Appearance appearance, object value, bool isSelected,
bool isLocked, float zoomFactor) 
 { 
   g.SetClip(r, CombineMode.Intersect); 
   g.FillRectangle(new SolidBrush(this.BackColor), r); 
   g.DrawString(this.Text, Font, new SolidBrush(this.ForeColor), r.X, r.Y); 
   this.TextChanged += new EventHandler(MeTextChanged); 
 } 

 public void MeTextChanged(object sender, EventArgs e) 
 { 
   this.BackColor = Color.Beige; 
 } 
}

SpreadTextBox tb = new SpreadTextBox();
tb.Name = "TB";
fpSpread1.ActiveSheet.AddControl(tb, 2, 2, 10, 10);

Public Class SpreadTextBox
   Inherits TextBox
   Implements FarPoint.Win.Spread.DrawingSpace.IEmbeddedControlSupport

   Private moving As FarPoint.Win.Spread.DrawingSpace.Moving = Moving.None
   Private sizing As FarPoint.Win.Spread.DrawingSpace.Sizing = Sizing.None
   Private activation As FarPoint.Win.Spread.DrawingSpace.ChildActivationPolicy = ChildActivationPolicy.DoubleClick

   Public Overridable Property ActivationPolicy() As FarPoint.Win.Spread.DrawingSpace.ChildActivationPolicy Implements IEmbeddedControlSupport.ActivationPolicy
   Get
     Return activation
   End Get
   Set(ByVal Value As FarPoint.Win.Spread.DrawingSpace.ChildActivationPolicy)
     ' activation = Value
   End Set
   End Property

   Public Overridable Property CanMove() As FarPoint.Win.Spread.DrawingSpace.Moving Implements IEmbeddedControlSupport.CanMove
   Get
     Return moving
   End Get
   Set(ByVal Value As FarPoint.Win.Spread.DrawingSpace.Moving)
     moving = Value
   End Set
   End Property

   Public Overridable Property CanSize() As FarPoint.Win.Spread.DrawingSpace.Sizing Implements IEmbeddedControlSupport.CanSize
   Get
     Return sizing
   End Get
   Set(ByVal Value As FarPoint.Win.Spread.DrawingSpace.Sizing)
     sizing = Value
   End Set
   End Property


   Public Sub ControlPaint(ByVal g As Graphics, ByVal r As Rectangle, ByVal appearance As FarPoint.Win.Spread.Appearance,
ByVal value As Object, ByVal isSelected As Boolean, ByVal isLocked As Boolean, ByVal zoomFactor As Single) Implements IEmbeddedControlSupport.ControlPaint
    g.SetClip(r, CombineMode.Intersect)
    g.FillRectangle(New SolidBrush(Me.BackColor), r)
    'g.FillRectangle(New SolidBrush(Me.BackColor), r.X - 120, r.Y - 120, r.Width, r.Height)
    g.DrawString(Me.Text, Font, New SolidBrush(Me.ForeColor), r.X, r.Y)
   AddHandler Me.TextChanged, AddressOf MeTextChanged

  End Sub

Public Sub MeTextChanged(ByVal sender As Object, ByVal e As EventArgs)
Me.BackColor = Color.Beige
End Sub
End Class

Dim tb As New SpreadTextBox()
tb.Name = "TB"
FpSpread1.ActiveSheet.AddControl(tb, 2, 2, 10, 10)