Extract the axis value for a particular axis use from an event structure.
To find out which axes are used, use [[email protected]_axes] on the device tool returned by [[email protected]_device_tool].
| this |
a `GdkEvent` |
| axis_use |
the axis use to look for |
| value |
location to store the value found |
|
true if the specified axis was found, otherwise false |