Re: [AD] Two custom mouse cursor patches

[Evert Glebbeek <eglebbk@xxxxxxxxxx>]

Ok, I've commited a slightly cleanedup version of my previous patch.
Quirks and comments are in the commit log, but I'll recap here.

I changed my mind about moving the functions into qzmouse.m, because  
in the design the mouse cursor display functions live in the graphics  
driver vtable, not the mouse driver vtable. Since qzmouse.m also  
depends on osxgl.h, I don't think there's a clear reason to do it  
otherwise since the argument that qzmouse.m is seperate from the  
OpenGL code doesn't hold. Maybe it should, but that's another matter.
It's easily changed later on anyway.

The mouse pointer is set to the system default if you switch in to  
the window and doesn't get changed until you move the mouse in and  
out of the window (triggering a mouseEntered event). I tried setting  
the mouse cursor explicitly in various places but to no avail. I'mm  
not sure what sort of event signaled when the window becomes active,  
I assumed windowDidBecomeMain. I read through the NSView guide as  
well, but couldn't find a solution.

The mouse cursor doesn't get set in fullscreen mode. At all. I can  
turn it on and off (using the same functions as for the windowed  
code, any reason there are seperate functions to hide and unhide the  
mouse in fullscreen mode?) but I can't get it to change. Google was  
no help, nor where the NSView and NSCursor references.

When using multiple windows the code behaves a bit strange. It seems  
to work well for a bit, changing the cursor whenever the mouse leaves  
one window and enters the next, but things get a bit weird after a  
while. The shape is either lost completely, or seems to get swapped  
between the two windows. This might be related to the first issue, I  
don't know. I made an attempt at fixing this but didn't try very hard.

Evert