Want Mouse Coordinates To Be "Translated" To My Coordinates

Hi,
The following code below displays the mouse coordinates alongside the cursor.
My problem is this-- I my WinForm displays an XY coordinate graph. I need the
origin to display (0, 0) i.e "my coordinates" which which appear in screen coords
as (210, 210).

What is the best way to accomplish this?

I tried Transform but I can't seem to pass information between a Rect to a Region, or somehow get the Transformed coordinates to change what the mouse is doing.

I would like any way to do this. It doesn't have to use Transform.

Thanks a lot in advance. Code is below.

////////////////////////////////////////////////////////////////////
protected override void OnMouseMove(MouseEventArgs e)
  {
   // TODO: Add Form1.OnMouseMove implementation
   base.OnMouseMove (e)
   mousePoints = new Point(e.X, e.Y);
   Invalidate();
  }

  protected override void OnPaint(PaintEventArgs e)
  {
   // TODO: Add Form1.OnPaint implementation
   base.OnPaint (e);
   Point screen = PointToScreen(mousePoints);
   string location = screen.ToString();
   e.Graphics.DrawString(location,
   e.Graphics.DrawString("   " + (screen), new Font("Arial", 10, FontStyle.Bold),
   SystemBrushes.ControlText,(PointF)mousePoints);
  }
////////////////////////////////////////////////////////////////

Try this.....

string location;

Point point;

protected override void OnMouseMove(MouseEventArgs e)

{

// TODO: Add Form1.OnMouseMove implementation

base.OnMouseMove(e);

string location = this.PointToClient(new Point( e.X, e.Y)).ToString();

point = new Point(e.X, e.Y);

Invalidate();

}

protected override void OnPaint(PaintEventArgs e)

{

// TODO: Add Form1.OnPaint implementation

base.OnPaint (e);

e.Graphics.DrawString(location + " " + (point), new Font("Arial", 10, FontStyle.Bold),

SystemBrushes.ControlText,(PointF)point);

}