pub type ModIndex = u32;Expand description
Index of a modifier.
A modifier is a state component which changes the way keys are interpreted. A keymap defines a set of modifiers, such as Alt, Shift, Num Lock or Meta, and specifies which keys may activate which modifiers (in a many-to-many relationship, i.e. a key can activate several modifiers, and a modifier may be activated by several keys. Different keymaps do this differently).
When retrieving the keysyms for a key, the active modifier set is
consulted; this detemines the correct shift level to use within the
currently active layout (see LevelIndex).
Modifier indices are consecutive. The first modifier has index 0.
Each modifier must have a name, and the names are unique. Therefore, it is safe to use the name as a unique identifier for a modifier. Modifier names are case-sensitive.