TOPIC -----------------------------------------------------------
Can I paste a 24-bit graphic into the Scrapbook from an application without
losing any of the detail or color depth?
DISCUSSION ------------------------------------------------------
The Macintosh Scrapbook can handle 24-bit images. The application from which
the image is being copied must support copy and paste commands for the
scrapbook. The application must place the image in a PICT2 file format,
which includes parameters for describing the image (8-bit, 24-bit, chunky,
planar, and so on).
A problem occurs, however, when displaying a 24-bit image on an 8-bit video
card and/or in an 8-bit graphics program. The image colors will be incorrect,
because they are set for 24 bits, but the image will continue to be stored as
a 24-bit image. For example, one possible outcome of a 24-bit RasterOps image
paste to 8-bit Pixel Paint is a blue image. This is because three 8-bit red,
green, and blue transfers are sent to the video card. The last image transfer
is blue, so a Macintosh II video card will only show the blue portion of the
image.
The image also may not display correctly when pasting to different 24-bit
displays, because the implementation of 24-bit color differs from video card
to video card.