This all sounds like a generally terrible idea.
Have you checked to see whether the Accessibility APIs can give you what you
want?
If it's for some other purpose than accessibility, sounds like you're walking
the slippery slope to hell…. ;)
--Graham
On 10/10/2011, at 1:26 PM, Jerry Krinock wrote:
> I changed the subject line because if I could just get the screen coordinates
> of my Status Item, my kludge for giving it keyboard focus looks like it will
> work.
>
> NSMenu inherits from NSObject, and as far as I can see give no clue regarding
> its location on the screen. NSStatusItem and NSStatusBar are likewise mum.
>
> However, the status item has an image. I subclassed NSImage, found that
> -drawInRect:fromRect:operation:fraction:respectFlipped:hints: is invoked.
> From reading the Cocoa Drawing Guide, it seems that the tx value of the
> current transformation matrix when this method is running is the x-coordinate
> that I'm looking for. So I subclassed NSImage…
>
> @implementation MyLocatableImage
>
> - (void)drawInRect:(NSRect)dstSpacePortionRect
> fromRect:(NSRect)srcSpacePortionRect
> operation:(NSCompositingOperation)op
> fraction:(CGFloat)requestedAlpha
> respectFlipped:(BOOL)respectContextIsFlipped
> hints:(NSDictionary *)hints {
> NSGraphicsContext* nsGraphicsContext = [NSGraphicsContext currentContext] ;
> CGContextRef aContext = [nsGraphicsContext graphicsPort] ;
> CGAffineTransform ctm = CGContextGetCTM(aContext) ;
> NSLog(@"The ctm: %f %f %f %f %f %f", ctm.a , ctm.b , ctm.c , ctm.d ,
> ctm.tx , ctm.ty) ;
> [super drawInRect:dstSpacePortionRect
> fromRect:srcSpacePortionRect
> operation:op
> fraction:requestedAlpha
> respectFlipped:respectContextIsFlipped
> hints:hints] ;
> }
>
> @end
>
> Unfortunately, the matrix elements are NSLogged as:
> 1.000000 0.000000 -0.000000 1.000000 0.000000 22.000000
>
> which is obviously not what I'm looking for, since the the x-coordinate of my
> status item is about 850.
>
> The two 'Rect' parameters of that method give similar useless local
> coordinates.
>
> Is there any way to get the global/screen coordinates of a menu, an
> NSStatusItem in particular?
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