knudsen@ihlpl.att.com (Knudsen) (03/09/89)
I'd like some advice with what seems like a simple idea. Given a canvas with its pixwin, how can I just get at the raw bits of the image so as to save it to a disk file and later reload it into the same pixwin? Note that the rectangle size and shape will not change. I could root thru the *.h files and de-reference a chain of structure pointers and probably find the backing store bit image. However, there's a hope expressed in the manual that we will treat Canvasses and Pixwins as "opaque," meaning that any hacks may break with the next version of Sunview. So, is there a gentlemanly way to do this? Yes, I can copy the pixwin to a pixrect, but this wastes memory and just recursively calls this posting on pixrects instead of canvasses. Mike Knudsen Bell Labs(AT&T) att!ihlpl!knudsen
chuck@trantor.harris-atd.com (Chuck Musciano) (03/14/89)
Copy the pixwin to a pixrect, and then pr_dump() to write it to a file. See Chapter 5 of the pixrect manual. Chuck Musciano Advanced Technology Department Harris Corporation (407) 727-6131 ARPA: chuck@trantor.harris-atd.com