c# absolute position of control on screen

c# absolute position of control on screen

I'm trying to get the absolute position of a control on the screen. I'm
using two monitors and the results aren't really that great...
What I'm doing is opening another form to capture an image, then passing
this image to the main form and closing the capture form. I then want the
main form to appear in the same place the picture was captured. To get a
gist of what I'm trying to do as an example, open Snipping Tool on Windows
and capture a snip. The window will then appear in the place that the
image was taken.
This is the current code I am using to do this:
Location = new Point(Cursor.Position.X - CaptureBox.Width -
CapturePanel.Location.X - CaptureBox.Location.X - 8, Cursor.Position.Y -
CaptureBox.Height - CapturePanel.Location.Y - CaptureBox.Location.Y - 30);
CapturePanel contains the CaptureBox control which stores the picture. I'm
also taking 8 from the X location and 30 from te Y location to compensate
for the form's border and title bar, but the only problem with this is
that some computers will be using a different window style, and these
numbers will change.
If there is a method that can be used to grab the border and title
width/height of windows, that would be great.