| .TH IM_WRITELINE 3 "22 April 1991" |
| .SH NAME |
| im_writeline \- writes a line of data in the image descriptor |
| .SH SYNOPSIS |
| .B #include <vips/vips.h> |
| |
| .B int im_writeline(ypos, image, buffer) |
| .br |
| .B int ypos; |
| .br |
| .B IMAGE *image; |
| .br |
| .B char *buffer; |
| .SH DESCRIPTION |
| .B im_writeline(3) |
| writes the ypos line of an image held in buffer to either the output |
| buffer image (previously set by im_setbuf(3)) or to an output file |
| (previously set by im_openput(3)). The function provides uniform treatment of |
| output irrespectively whether it is a file or a buffer image. |
| |
| You should be careful that the buffer does indeed contain enough data for a |
| complete line of pels --- see lsize(3). |
| |
| Any evaluation callbacks which have been added to image are triggered --- see |
| im_generate(3) and im_add_eval_callback(3). |
| .SH BUGS |
| This function changed in VIPS6: |
| programs written previously must be modified by removing the last argument |
| of the old im_writeline(3). |
| .SH RETURN VALUE |
| The function returns 0 on success and -1 on error. |
| .SH SEE ALSO |
| im_setbuf(3), im_openout(3), im_add_eval_callback(3). |
| .SH COPYRIGHT |
| N. Dessipris |
| .SH AUTHOR |
| N. Dessipris 23/04/1991 |
