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Appendix A: Functions and Instructions 857
PtText CATALOG
PtText
string
,
x
,
y
Displays the Graph screen and places the
character string
string
on the screen at the pixel
nearest the specified (
x, y
) window coordinates.
string
is positioned with the upper-left corner of
its first character at the coordinates.
PtText "sample",3,5 ¸
PxlChg CATALOG
PxlChg
row
,
col
PxlChg
rowList
,
colList
Displays the Graph screen and reverses the pixel
at pixel coordinates (
row
,
col
).
Note: Regraphing erases all drawn items.
PxlChg 2,4 ¸
PxlCrcl CATALOG
PxlCrcl
row
,
col
,
r
[,
drawMode
]
Displays the Graph screen and draws a circle
centered at pixel coordinates (
row
,
col
) with a
radius of
r
pixels.
If
drawMode
= 1, draws the circle (default).
If
drawMode
= 0, turns off the circle.
If
drawMode
= -1, inverts pixels along the circle.
Note: Regraphing erases all drawn items. See
also
Circle.
PxlCrcl 40,80,30,1 ¸
PxlHorz CATALOG
PxlHorz
row
[,
drawMode
]
Displays the Graph screen and draws a horizontal
line at pixel position
row
.
If
drawMode
= 1, draws the line (default).
If
drawMode
= 0, turns off the line.
If
drawMode
= -1, turns a line that is on to off or
off to on (inverts pixels along the line).
Note: Regraphing erases all drawn items. See
also
LineHorz.
PxlHorz 25,1 ¸
PxlLine CATALOG
PxlLine
rowStart
,
colStart
,
rowEnd
,
colEnd
[,
drawMode
]
Displays the Graph screen and draws a line
between pixel coordinates (
rowStart
,
colStart
) and
(
rowEnd
,
colEnd
), including both endpoints.
If
drawMode
= 1, draws the line (default).
If
drawMode
= 0, turns off the line.
If
drawMode
= -1, turns a line that is on to off or
off to on (inverts pixels along the line).
Note: Regraphing erases all drawn items. See
also
Line.
PxlLine 50,15,20,90,1 ¸