the axis is used as the scroll x delta
the axis is used as the scroll y delta
the axis is used for pen/tablet distance information
the axis is ignored.
a constant equal to the numerically highest axis value.
the axis is used for pressure information.
the axis is used for pen rotation information
the axis is used for pen slider information
the axis is used for wheel information.
the axis is used as the x axis.
the axis is used for x tilt information.
the axis is used as the y axis.
the axis is used for y tilt information.
Defines how device axes are interpreted by GTK.
Note that the X and Y axes are not really needed; pointer devices report their location via the x/y members of events regardless. Whether X and Y are present as axes depends on the GDK backend.