[comp.sys.mac.programmer] Some DA trivialities

jjoshua@topaz.rutgers.edu (Jon Joshua) (02/23/90)

Two quick questions:

1.  From within a DA, how can I force a redraw of the entire desktop
sans creating a BIG window and removing it?

2.  Again, from within a DA, how can I find the start and end of the
system heap?  From an application I can use SysZone and ApplZone (and
SystemZone() and ApplicZone()) but they do not work when I convert to
a DA.  Right now I am just checking memory from 0x0000..0xffff.  Is
this guaranteed to break?

JOn.
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