Hi Mark,
I think the following would work:
value = valueOfAttribute attribute
point_ptr = Pointer.new(CGPoint.type)
AXValueGetValue( value, KAXValueCGPointType, point_ptr )
point = point_ptr[0]
Basically, you want to pass a pointer to a CGPoint to the API.
Laurent
On Dec 1, 2010, at 10:16 PM, Mark Rada wrote:
> Hi,
>
> With the recent closing of ticket #1002 I have been trying to take a bunch of
> Objective-C code and write it in MacRuby.
>
> One problem that I have run into is with the AXValueGetValue() function in
> AXValue.h. The last argument to the function is supposed to be the address of
> a structure to populate; a fragment of that code would look like this:
>
> AXValueRef value = (AXValueRef)[self valueOfAttribute:attribute];
> CGPoint point;
> AXValueGetValue( value, kAXValueCGPointType, &point );
> return point;
>
> If I wanted to write this in MacRuby I think I would have to do something
> like this:
>
> value = valueOfAttribute attribute
> point = CGPoint.new
> AXValueGetValue( value, KAXValueCGPointType, point.address_of )
> point
>
> Except that I have not come across a way to get the address of an object in
> MacRuby. I have tried the #object_id but then I get errors about the function
> wanting a Pointer.
>
> Is there a way to get a pointer to a specific object or a way to get the
> address of an object?
>
> Thanks,
> Mark
>
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