Dim Rect As New Rectangle
'si tu veut ecrire ton rectangle sur la form
Dim Graph As Graphics = Me.CreateGraphics
'ou sur un picturebox
Dim Graph As Graphics = PictureBox1.CreateGraphics
'
Dim couleur As System.Drawing.Pen
With Rect
.X = 0
.Y = 0
.Width = 20
.Height = 20
End With