Actually, further to (1) it appears that if the RPCEmu window is positioned 
near the origin of the main screen (bottom left) then the mouse behaves 
correctly when re-entering the window (transitioning from the Mac OS X desktop 
to the RISCOS desktop in RPCEmu).  So, I think that does support the hypothesis 
that the issue is some offset calculation.

I don't know if this is significant, but the two monitors that I have attached 
to my Mac Pro have slightly different geometries (the main monitor being higher 
resolution).  Mac OS X allows you to position the logical geometry of the two 
screens adjacent to each other (to the left or right) with an arbitrary 
vertical offset of a smaller screen against a larger one.  I'll need further 
play-time to determine if this, or simply the dual screen setup, is a factor.


On 2013-01-04, at 7:28 PM, Luke Evans <[email protected]> wrote:

> I've just installed RPCEmu on Mountain Lion - originally off the ROOL USB 
> drive (0.8.8), then the 0.8.9 build from the web.
> There seem to be a few issues however:
> 1. The mouse seems to get messed up after leaving the RPCEmu window for the 
> first time.  When returning to the window, the position of the RISCOS mouse 
> will get clamped to a particular boundary and not move beyond that - perhaps 
> affording some movement in a portion of the RISCOS desktop, but not all.
> This seems to be an incorrect bounds/offset calculation when the mouse 
> reenters the window.  I wonder if this has to do with multiple monitors 
> (which I have), but I haven't tried on a single monitor system yet.  This bad 
> state seems to get reset if the RPCEmu window is deactivated and reactivated 
> (i.e. click on another window, then click back on the RPCEmu window's title 
> bar), but the situation will arise again once the mouse leaves the window 
> bounds again.


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