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Draw a list of spans
#include <gf/gf.h>
int gf_draw_spanlist (
gf_context_t context,
unsigned nspans,
int x1[],
int x2[],
int y[] );
- context
- The graphics context to use.
- nspans
- The number of spans in the list.
- x1, x2
- An array of left and right x values for the spans.
- y
- An array of y values for the spans.
gf
This function draws a list of spans in the current foreground color. A span is a horizontal run of pixels with fixed height of one pixel.
- GF_ERR_OK
- Success.
- GF_ERR_NOLOCK
- The hardware isn't locked; check to ensure gf_draw_begin() was called successfully.
QNX Graphics Framework
Safety: | |
Interrupt handler |
No |
Signal handler |
No |
Thread |
Yes |
gf_context_set_linedash(),
gf_context_set_linejoin(),
gf_draw_poly_fill(),
gf_draw_span(),
gf_point_t
“Drawing lines and polygons” in the
Basic Drawing chapter.
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