Ah, thanks. I've looked thought the src now, and it seems _C_ID and _C_BOOL might correspond to "@" and "B" but I can't find where they are defined; not in macruby src nor in Cocoa Dev Documentation. Where is the list of available Pointer types + their character code? Cheers Nic On Fri, Jan 2, 2009 at 10:15 AM, Vincent Isambart <vincent.isambart@gmail.com> wrote:
The following doesn't work:
framework 'Cocoa' p1 = Pointer.new_with_type('@') p1.assign(false) p1[0] == false # => false, but should be true
Then I figured I should be able to pass BOOL to -new_with_type as it is the data type, but BOOL isn't recognised.
The type for bool is upper case B. If you replace @ with B in your example it works fine.
Just a little warning about pointers: they tend to forget their type if you read the value returned by a function twice. Do not try to read more than once their value (just store the value returned by #[] in a Ruby variable). However, reusing the same pointer in multiple calls seems to work fine. For example the following code: # rects was retuned by NSLayoutManager#rectArrayForCharacterRange puts rects[0] puts rects[0]
Displays: #<NSRect origin=#<NSPoint x=5.0 y=0.0> size=#<NSSize width=0.0 height=19.0>> xxxxx.rb:222:in `[]': unrecognized octype `?_?' (RuntimeError) _______________________________________________ MacRuby-devel mailing list MacRuby-devel@lists.macosforge.org http://lists.macosforge.org/mailman/listinfo.cgi/macruby-devel
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