GdkModifierIntent

This enum is used with gdk_keymap_get_modifier_mask() in order to determine what modifiers the currently used windowing system backend uses for particular purposes. For example, on X11/Windows, the Control key is used for invoking menu shortcuts (accelerators), whereas on Apple computers it’s the Command key (which correspond to %GDK_CONTROL_MASK and %GDK_MOD2_MASK, respectively).

Values

ValueMeaning
PRIMARY_ACCELERATOR0

the primary modifier used to invoke menu accelerators.

CONTEXT_MENU1

the modifier used to invoke context menus. Note that mouse button 3 always triggers context menus. When this modifier is not 0, it additionally triggers context menus when used with mouse button 1.

EXTEND_SELECTION2

the modifier used to extend selections using modifier-click or modifier-cursor-key

MODIFY_SELECTION3

the modifier used to modify selections, which in most cases means toggling the clicked item into or out of the selection.

NO_TEXT_INPUT4

when any of these modifiers is pressed, the key event cannot produce a symbol directly. This is meant to be used for input methods, and for use cases like typeahead search.

SHIFT_GROUP5

the modifier that switches between keyboard groups (AltGr on X11/Windows and Option/Alt on OS X).

DEFAULT_MOD_MASK6

The set of modifier masks accepted as modifiers in accelerators. Needed because Command is mapped to MOD2 on OSX, which is widely used, but on X11 MOD2 is NumLock and using that for a mod key is problematic at best. Ref: https://bugzilla.gnome.org/show_bug.cgi?id=736125.

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