Skip to content

Latest commit

 

History

History
38 lines (24 loc) · 815 Bytes

WritePixel.md

File metadata and controls

38 lines (24 loc) · 815 Bytes
Raw

NAME

WritePixel -- Change the pen num of one specific pixel in a specified RastPort.

SYNOPSIS

    error = WritePixel(  rp, x,  y)
     d0                 a1 D0  D1

    LONG WritePixel( struct RastPort *, SHORT, SHORT );

Links: RastPort

FUNCTION

Changes the pen number of the selected pixel in the specified RastPort to that currently specified by PenA, the primary drawing pen. Obeys minterms in RastPort.

INPUTS

rp - a pointer to the RastPort structure (x,y) - point within the RastPort at which the selected pixel is located.

RESULT error = 0 if pixel succesfully changed = -1 if (x,y) is outside the RastPort

BUGS

SEE ALSO

ReadPixel graphics/rastport.h