I spent a couple of hours trying to figure things out. If I have a copy of notepad open in both monitors and I choose to grab a screenshot of windows objects. No redboxes appear in the primary display. They appear in the secondary display and will function as I expect and grab screen shots of the various objects that are encircled by the redboxes.
I noticed that if I hover over the desktop of the secondary monitory, the desktop is encircled by the redbox (very cool idea) but one edge is missing. The edge that is missing is the one that spans across to my primary monitor. There is no continuation of the redbox onto my primary monitor. I suspect that it would take a screen shot of the entire, spanned desktop even though there was no redbox on the primary display. I took the screen capture and that confirmed my suspicion - it did take a shot of the entire spanned desktop.
I am running windows xp sp2, on the nvidia geforce 6600 gt that has dual monitor outputs. The thing that I did notice is that I can not get my lcd monitor to show up (in either windows settings or the nvidia control panel) as display number 1. It always shows up as display 2.
On my desktop I have this setup:
CRT - LCD
With the lcd as the primary.
Do you have anything that you would like me to try?
I am very convinced that this will be the screen capture software that I will be using from now on - if I can get this working. I am even willing to become a member of donationcoder. If this works well I will probably suggest that this program be used as a standard at my company.