Multi-Pointer X Support For GTK+
Written by Michael Larabel in GNOME on 20 January 2009 at 09:11 AM EST. 2 Comments
Multi-Pointer X support won't be enabled by default in the forthcoming release of X Server 1.6 even though it landed in the mainline code-base last year. This technology to allow for multiple input devices to be used on Linux simultaneously will not be enabled by default until X Input 2.0 arrives with X Server 1.7 later this year. However, that isn't stopping GNOME developers from already working on GTK+ support for X Input 2.0 and Multi-Pointer X.

Carlos Garnacho has been working on adding X Input 2.0 support to the GDK by adding in a GtkDeviceGroup multidevice-event signal. The GtkDeviceGroup is a container for grouping GdkDevices, hence its name. There has also been a few API changes to GTK+ and other work to incorporate X Input 2.0 / MPX. There is also a fair amount of work left, which is detailed on the GTK+ MPX Wiki.

More information on the work done by Carlos can be found on his blog. There is a GTK+ MPX Git repository for those interested in trying out a version of GTK+ with multiple pointers before it enters the mainline GTK+ code-base.
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Michael Larabel is the principal author of Phoronix.com and founded the site in 2004 with a focus on enriching the Linux hardware experience. Michael has written more than 10,000 articles covering the state of Linux hardware support, Linux performance, graphics drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and OpenBenchmarking.org automated benchmarking software. He can be followed via Twitter or contacted via MichaelLarabel.com.

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