Re: [Qemu-devel] [Patch] Release mouse at window edges

[Fabrice Bellard]

The idea is interesting. Does it cause regressions in the normal mode ? 
If so, an option to enable it may be good. I think it is a problem that 
your patch is dependent on the cursor size.

Fabrice.

address@hidden wrote:
> Hello,
> the attached patch makes Qemu ungrab the mouse cursor when the guest mouse
> cursor hits the window edges. It also makes qemu automatically grab the
> mouse when the host mouse cursor enters the window.
>
> The patch uses the hardware cursor position (in cirrus_vga.c); this means
> that it only works when the guest system uses a hardware cursor and when
> Cirrus VGA is used.
>
> For Linux guest (tested with GamesKnoppix), it works when enabling
> "hw_cursor" in XF86Config-4 (in "Device" setion for "cirrus" driver).
> For Win98se, it works when setting display hardware acceleration to maximum
> and using the standard b/w, non-animated cursor set.
> For Win2k Professional, it requires a newer Cirrus driver (old standard
> Win2k driver for "GD5446 compatible" is from 1999, new driver from ISDCorp
> is from 2000). It can be found
> at
> <http://www.hofnet.com/fire/browse.asp?target=%5CCIRRUS%20LOGIC%5CCL-GD5446%5CDRIVERS%5CWIN2000>.
> Besides the new driver, you have to do the same as under Win98, and you must
> disable mouse shadow.
>
> The patch applies cleanly to qemu-snapshot-2005-02-25_23.tar.bz2.
>
> Oliver Gerlich