Cursor.Clip code no longer works: Upgraded VB .net 2008 framwork 2.0 to VB.net 2010 framework 3.5

My program worked fine in VB.net 2008 with 2.0 framework.

I updated it to VB.net 2010 and framework 3.5

Now this code does not work anymore.  It does not confine the cursor like it did before.


What it is supposed to do is confine the mouse movement to the PictureMap.  But now it lets the mouse work everywhere..  

Is there a new way to code this for VB.net 2010 3.5 framework?
TreasureBox = New Rectangle(R.Next(5, PictureMap.Width - 5), R.Next(5, PictureMap.Height - 5), 1, 1)
        TreasureBox.Inflate(6, 6)

     

        Dim rc As Rectangle = Panel1.RectangleToScreen(PictureMap.Bounds)
        Cursor.Position = New Point(rc.Location.X + rc.Width / 2, rc.Location.Y + rc.Height / 2)

        Cursor.Clip = rc

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hagoogAsked:
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Mike TomlinsonMiddle School Assistant TeacherCommented:
I can't see anything wrong, assuming PictureMap is actually contained by Panel1.  The code works for me in a simple test.

When does this code get run?
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hagoogAuthor Commented:
on a button click.

It is on panel1.
Very strange because it worked before fine and only stopped after I upgraded to program to VB.net 2010 and changed framework to 3.5

before it was 2008 and 2.0
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Mike TomlinsonMiddle School Assistant TeacherCommented:
Perhaps something is wrong with just that upgraded project.   Try out a simple test in a NEW project and see if the problem still persists...
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hagoogAuthor Commented:
It seems like I can not make it move the mouse pointer..

It seems like the problem I have is that this code does not relocate the mouse pointer..


    Dim rc As Rectangle = Panel1.RectangleToScreen(MapPic.Bounds)
        Cursor.Position = New Point(rc.Location.X + rc.Width / 2, rc.Location.Y + rc.Height / 2)

even this line does not relocate the mouse pointer
        Cursor.Position = New System.Drawing.Point(10, 10)
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hagoogAuthor Commented:
I created a new project and just added a button and put this in  the click event

Cursor.Position = New System.Drawing.Point(10, 10)

pointer did not relocate!
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hagoogAuthor Commented:
created new project only this code..


Public Class Form1

    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        Dim rc As Rectangle = RectangleToScreen(MyMap.Bounds)
        Cursor.Position = New Point(rc.Location.X + rc.Width / 2, rc.Location.Y + rc.Height / 2)
        Cursor.Clip = rc

    End Sub
End Class


But it does not relocate the pointer.

It is seeming to lock the app  - like modal.. only control alt delete and killing the instance allows me to return to the DEV env or desktop,,  but mouse can move anywhere on screen..
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Mike TomlinsonMiddle School Assistant TeacherCommented:
That code works for me.  =\

The cursor jumps and is bound to MyMap.

...so something else is wrong with either your DEV environment or your computer itself.
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