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 C_CHGATTR()

 DESCRIPTION

 C_CHGATTR() changes the specified screen attribute to another
 attribute for a specified area on the screen.

 SYNTAX

 C_CHGATTR(st_row, st_col, end_row, end_col, from_color, to_color)

 PARAMETERS

 st_row (N), st_col (N), end_row (N), and end_col (N) define the
 upper left and lower right screen coordinates to set the new attribute.

 from_color (C/N) is the current color to change for the box area.
 The color can be given as a Clipper color string or a numeric color
 code (see Appendix E).

 to_color (C/N) is the color to change to for the box area.  The
 color can be given as a Clipper color string or a numeric color
 code (see Appendix E).

 RETURNS

 There is no return value.

 EXAMPLES

 c_chgattr(10,10,20,69,"W/B","W+/B")    && change color for area