PenMode

PenMode Set the graphics pen pattern transfer mode

#include <Quickdraw.h> Quickdraw

void PenMode(newPnMode );

short newPnMode ; transfer mode; patCopy, patOr, patXor, etc.

PenMode selects the pattern transfer mode to be used in pen drawing and

painting operations.

newPnMode is a short and may be one of the following constants defined in

Quickdraw.h:

patCopy 8 overwrite background entirely

patOr 9 overwrite where pattern is black

patXor 10 invert where pattern and bkgd are both black

patBic 11 force white where pattern is black

notPatCopy 12 invert pattern, then patCopy

notPatOr 13 invert pattern, then patOr

notPatXor 14 invert pattern, then patXor

notPatBic 15 invert pattern, then patBic

Notes: This function modifies the pnMode field of the current GrafPort structure.

It affects all drawing operations such as LineTo and FrameRect, as well

as painting operations such as PaintOval, PaintRoundRect, etc.

See Transfer Modes for a graphic depiction of the effect of the various

pen modes.

You can obtain the current setting by accessing the pnMode field of a

curPnMode = thePort->pnMode;

This function does not affect how text is drawn. Use TextMode to modify

the text-drawing pen's transfer mode.

Referenced by (28):