printing the mirror image.

I've been asked to make changes to a graphics application that
currently build output and sends it to the printer using a print
library.  I've been asked to add functionality that will allow a user
to print the mirror image of the text, graphics, and shapes. I thought
the easiest way to do this was to allow the program to print the text,
graphics, and shapes to the print device context as it currently does.
 Then create a dib from the printer device context, create a mirror
image of the bitmap, and print the mirrored bitmap. Does this sound
reasonable? If so, does anyone have sample code?