[Csgl-users] graphical component

[souhail s. <sou...@ya...>]

hello, 
I need to draw a curve on my application from a database. so to make it easy i download a graphical component from this link 
http://www.vbfrance.com/codes/COURBE-2D-SANS-MSCHART_35511.aspx


my goal is to draw a line when I click on the mouse. i try to do it, but it doesn't works.   
i add in the program code 
in :  <<<OnMouseClick(ByVal e As System.Windows.Forms.MouseEventArgs)>>

Dim mousePt As Point
mousePt = New Point(e.X, e.Y)
If (rgraph.Contains(mousePt)) Then //rgaph is the rectangle that the component use it
isImageClicked = True
 

and in  :    <<OnPaint(ByVal e As PaintEventArgs) MyBase.OnPaint(e)   >>

Dim rectA As Rectangle = New Rectangle(10, 10, 333, 333)
 If (isImageClicked = True) Then
e.Graphics.DrawRectangle(Pens.Black, rectA)

So it doesn't work. please tell me if there is a solution for my problem? 
or please tell me if you know another graphical component that offers the function of on mouse click 
and thanks in advance.