CognitiveTPG DLXi - Manual (Page 70)

S T A N D A R D P R I N T E R C O M M A N D S
FILL_BOX
Function This command inverts every dot in the specified
rectangular area. Where the existing field is white,
the FILL_BOX command fills it in black, while areas
already black are flipped to white.
Explicit Form FILL_BOX x y w h
Implicit Form F x y w h
Parameters
x
X coordinate of upper left corner of
box
y Y coordinate of upper left corner of
box
w Box width, measured in dot
columns. Must be greater than zero.
h
Box height, measured in dot rows.
Must be greater than zero.
Comments The
FILL_BOX
command can produce many useful
effects. Overlaying multiple filled boxes can produce
wide or multiple-line borders. Overlaying filled
boxes can also produce shadow effects or one-dot-
wide lines. The following examples show some
possible uses of the command.
See also
DRAW_BOX
IMPORTANT!
You can print black labels with white text on them using
the
FILL_BOX command, but this is not
recommended. Printing large dark areas causes
excessive heat buildup and is very hard on the print
head. Long horizontal boxes are most strenuous to
print. They may adversely affect print quality, and also
place considerable drain on a portable printer's battery.
Revision F, January 2012, CognitiveTPG 61