rsherman@mthvax.cs.miami.edu (Roby Sherman) (02/05/91)
I'm confused (ok, I mean MORE than usual!) my friend and I have written a routine to draw to an offscreen bitmap and copy to a visable window. This routine works flawlessly on the Mac plus, classic, se, etc. But it will hang any Mac II (or the LC) even if they are set to B/W mode. Why? -- Roby -- Roby Sherman | rsherman@mthvax.cs.miami.edu //Interealm\\ |-------------------------------------------------------------- P.O. Box 63-04 | "Never mistake knowledge for wisdom.. One helps you make a Miami, Fl. 33163| living; the other helps you make a life."
mlab2@kuhub.cc.ukans.edu (02/06/91)
In article <1991Feb05.021813.17710@mthvax.cs.miami.edu>, rsherman@mthvax.cs.miami.edu (Roby Sherman) writes: > I'm confused (ok, I mean MORE than usual!) my friend and I have written a > routine to draw to an offscreen bitmap and copy to a visable window. > > This routine works flawlessly on the Mac plus, classic, se, etc. But it will > hang any Mac II (or the LC) even if they are set to B/W mode. Why? > > -- Roby > > -- > Roby Sherman | rsherman@mthvax.cs.miami.edu I seem to recall a similar experience. I believe the II was very picky about the current GrafPort and the clipping region on CopyBits calls. If your graphic you are transfering is not completely within the rectangle of the port you may transfer garbage or crash. Make sure every offscreen port has a clipping region set to its bounds and try making different ports current during the CopyBits. john calhoun