link winsnap
May 2, 2001; Ralph E. Griswold
Requires: Version 9 graphics
This file is in the public domain.
This procedure writes an image file for a specified portion of a window. The name for the file is requested from the user via a dialog box. If there already is a file by the specified name, the user is given the option of overwriting it or selecting another name. The procedure fails if the user cancels.