Right -- unfortunately patterns (in the QD sense) aren't something easily
supported cross-platform. But what you can do is draw your borders into the
mask of a picture, the image of which has been filled with an appropriate
pattern. Then draw this picture to the final graphics context.
But if I fill the mask with a zebra pattern, draw the the borders into
this mask, then if I draw this picture into the final graphics
context, that will change my entire underlying image (atop which I
want to draw just a dashed outline) into a zebra, no?
Of course, you'll notice that you don't see the marching-ants selection style
in Apple apps anymore -- the more fashionable look these days seems to be the
translucent region, which is actually quite a bit easier to do (on OS X, at
least) with the Object2D classes.
I do realize that marching ants is passé. Is there another way, eg.
passing an RB Object2D to one of the CoreGraphics routines via a
declare to make its (or a derivative of this Object2D) border dashed?
Speaks to the larger issue of how to massage RB's already rich vector
graphics suite with CoreGraphics, Quartz, OpenGL or whatever?
Thanks!
Peter
--
-------------------------------------------------------------------------------
Peter K. Stys, MD
Professor of Medicine(Neurology), Senior Scientist
Ottawa Health Research Institute, Div. of Neuroscience
Ottawa Hospital / University of Ottawa
Ontario, CANADA
tel: (613)761-5444
fax: (613)761-5330
http://www.ohri.ca/profiles/stys.asp
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