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Acorn Arcade forums: Programming: More queries
 
  More queries
  (13:45 20/4/2002)
  john (16:18 20/4/2002)
    Chris (11:02 21/4/2002)
 
Chris Message #5010, posted at 13:45, 20/4/2002
Unregistered user Can anyone help with a couple more questions I have?

1. How do you set/clear an individual bit in BASIC (e.g., setting bit 3 of a menu item's block in order to tick/untick it)? I can use indirection operators to write bytes and words, but I can't remember how one writes bits.

2. Dialogue boxes in RO4 have attractive 3D edges, but I'm stuck with RO3.11. Can I ensure that any templates I design on RO3 will appear in R4 with this effect?

Thanks,
Chris
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john Message #5011, posted at 16:18, 20/4/2002, in reply to message #5010
Unregistered user You have to, if you want to set bit 14 of the word at block% + 12 you go

block%!12 = block%!12 OR (1<<14)

to clear do

block%!12 = block%!12 AND NOT(1<<14)

RO4 automatically adds the 3d to any window with no scroll bars. You don't have to do anything special.

HTH
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Chris Message #5012, posted at 11:02, 21/4/2002, in reply to message #5011
Unregistered user Thanks!
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Acorn Arcade forums: Programming: More queries