map_keyval

Obtains a list of keycode/group/level combinations that will generate keyval.

Groups and levels are two kinds of keyboard mode; in general, the level determines whether the top or bottom symbol on a key is used, and the group determines whether the left or right symbol is used.

On US keyboards, the shift key changes the keyboard level, and there are no groups. A group switch key might convert a keyboard between Hebrew to English modes, for example.

`GdkEventKey` contains a group field that indicates the active keyboard group. The level is computed from the modifier mask.

The returned array should be freed with g_free.

Parameters:

this	a `GdkDisplay`
keyval	a keyval, such as gdk_key_a, gdk_key_up, gdk_key_return, etc.
keys	return location for an array of `GdkKeymapKey`
n_keys	return location for number of elements in returned array

Returns:

true if keys were found and returned