| Type | Intent | Optional | Attributes | Name | ||
|---|---|---|---|---|---|---|
| type(c_ptr), | value | :: | line |
line, marker or ribbon handle |
||
| integer(kind=c_int), | value | :: | n |
the number of points |
The first n points of the buffer have been written: draw n points and upload the buffer.
Returns 0, or -1 if n exceeds the capacity.