graphics.hlp (
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Important Notice
The pages on this site contain documentation for very old MS-DOS software,
purely for historical purposes.
If you're looking for up-to-date documentation, particularly for programming,
you should not rely on the information found here, as it will be woefully
out of date.
_lineto, _lineto_w
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The _lineto functions draw a line from the current position up to
and including the destination point. The destination point for the
_lineto function is given by the view-coordinate point (<x>, <y>).
The destination point for the _lineto_w function is given by the
window-coordinate point (<wx>, <wy>).
The _lineto_w function is implemented as a macro.
The line is drawn using the current color, logical write mode, and
line style. If no error occurs, _lineto sets the current position
to the view point (<x>, <y>); _lineto_w sets the current position
to the window point (<wx>, <wy>).
If you use _floodfill to fill in a closed figure drawn with
_lineto calls, the figure must be drawn with a solid line-style
pattern.
Return Value
The _lineto and _lineto_w functions return a nonzero value if the
line is drawn successfully; otherwise, they return 0.
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