Get the main Gtk struct
Returns the group the given @feature and @idx belong to, or -1 if feature/index do not exist in @pad.
Returns the number of modes that @group may have.
Returns the number of features a tablet pad has.
Returns the number of groups this pad device has. Pads have at least one group. A pad group is a subcollection of buttons/strip/rings that is affected collectively by a same current mode.
the main Gtk struct as a void*
#GdkDevicePad is an interface implemented by devices of type %GDK_SOURCE_TABLET_PAD, it allows querying the features provided by the pad device.
Tablet pads may contain one or more groups, each containing a subset of the buttons/rings/strips available. gdk_device_pad_get_n_groups() can be used to obtain the number of groups, gdk_device_pad_get_n_features() and gdk_device_pad_get_feature_group() can be combined to find out the number of buttons/rings/strips the device has, and how are they grouped.
Each of those groups have different modes, which may be used to map each individual pad feature to multiple actions. Only one mode is effective (current) for each given group, different groups may have different current modes. The number of available modes in a group can be found out through gdk_device_pad_get_group_n_modes(), and the current mode for a given group will be notified through the #GdkEventPadGroupMode event.