Are most printers capable of printing all the way to the edge of the paper?
is there a minimum margin?
In my program, the paper size is 8.5x11, how much space should I leave around the edge so that it will print properly?

No. How close to the edge you can get is entirely dependent on the printer model.

Many modern home ink-jet printers can get to 1/2 inch of the edge.

You can get information about the printing area using the Win32 DocumentProperties function.

Good luck!

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