Public ReadOnly Property TabRectangle As Rectangle

Dim instance As PaintTabStripTabEventArgs
Dim value As Rectangle
 
value = instance.TabRectangle

public Rectangle TabRectangle {get;}

private void fpspread1PaintTabStripButton(object sender, FarPoint.Win.Spread.PaintTabStripTabEventArgs e) 
{ 
      if (e.TabIndex = 0) { 
            e.Cancel = true;
            RectangleF r = e.TabPath.GetBounds(); 
            e.Graphics.FillRectangle(Brushes.Crimson, new RectangleF(e.TabRectangle.X, e.TabRectangle.Y, e.TabRectangle.Width, e.TabRectangle.Height)); 
      } 
}

Private Sub FpSpreadPaintTabStripTab(ByVal sender As Object, ByVal e As FarPoint.Win.Spread.PaintTabStripTabEventArgs) Handles
FpSpread1.PaintTabStripTab

      If e.TabIndex = 0 Then
            e.Cancel = True
            Dim r As RectangleF
            r = e.TabPath.GetBounds()
            e.Graphics.FillRectangle(Brushes.Crimson, New RectangleF(e.TabRectangle.X, e.TabRectangle.Y, e.TabRectangle.Width, e.TabRectangle.Height))
      End If