主题：画图工具

 请问一下，foxtable有没有画图工具，比如说 我指定长方形的长和宽名字为 length和width ,然后我修改长度为10mm,宽度为5mm,foxtable自动把这个长方形描绘出来

 Dim p As WinForm.Painter = e.Form.Controls("Painter1")
Dim length As WinForm.TextBox = e.Form.Controls("TextBox1")
Dim width As WinForm.TextBox = e.Form.Controls("TextBox2")
Dim c As Integer = length.value
Dim k As Integer = width.value
Dim g As Graphics = p.Graphics
Dim n As New Pen(Color.Black,3)
g.DrawRectangle(n,150,100,c,k)
p.Repaint()

每次点击的时候先清除原来的图片要怎么修改代码？

就是这样的，谢谢