You can set pointers using: Pointer.new_with_type and using one of the following types: http://developer.apple.com/library/mac/#documentation/Cocoa/Conceptual/ObjCRuntimeGuide/Articles/ocrtTypeEncodings.html#//apple_ref/doc/uid/TP40008048-CH100-SW1 Note, that not none of the types are supported.
Here is some more information: http://jonathan.waddilove.net/macruby_pointers.html To dereference a pointer, simply get its value: pointer = Pointer.new_with_type("f") pointer.assign(3.2) pointer's value = pointer[0] I'll soon update my book draft with a section on pointers. - Matt On Sat, Oct 23, 2010 at 10:04 PM, Mark Rada <mr...@marketcircle.com> wrote: > Hi, > > I've been trying to play with using the Accessibility API to do some > automated testing. > > >From what I have researched, I have to use some C functions that often > need a reference passed to the them. > > I am at a loss when trying to deal with Pointer objects. I've tried playing > with them and googling it, but I just cannot figure out how to turn a > pointer into a more useful type or to get what I want out of them. > > For example, I can start like this: > > framework 'Cocoa' > > unless AXAPIEnabled() # only works if I include the parenthesis > puts 'Please enable Access for Assistive Devices first' > exit 2 > end > > mail = > NSRunningApplication.runningApplicationsWithBundleIdentifier('com.apple.Mail').first > mail_object = AXUIElementCreateApplication mail.processIdentifier > > names = Pointer.new :object > > AXUIElementCopyAttributeNames mail_object, names > > > But then how do I get the values out of the names pointer? For reference, I > found the functions in AXUIElement.h. > > > Thanks, > Mark > _______________________________________________ > MacRuby-devel mailing list > MacRuby-devel@lists.macosforge.org > http://lists.macosforge.org/mailman/listinfo.cgi/macruby-devel >
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