(تم الحل) كيف يمكن تلوين الإطار الخاص بـ Groupbox ؟

كود :
Dim tSize As Size = TextRenderer.MeasureText(GroupBox1.Text, GroupBox1.Font)

        Dim borderRect As Rectangle = e.ClipRectangle

        borderRect.Y = (borderRect.Y _

                    + (tSize.Height / 2))

        borderRect.Height = (borderRect.Height _

                    - (tSize.Height / 2))

        ControlPaint.DrawBorder(e.Graphics, borderRect, Color.Blue, ButtonBorderStyle.Solid)

        Dim textRect As Rectangle = e.ClipRectangle

        textRect.X = (textRect.X + 6)

        textRect.Width = tSize.Width

        textRect.Height = tSize.Height

        e.Graphics.FillRectangle(New SolidBrush(Me.BackColor), textRect)

        e.Graphics.DrawString(GroupBox1.Text, GroupBox1.Font, New SolidBrush(GroupBox1.ForeColor), textRect)