GdkModifierType

A set of bit-flags to indicate the state of modifier keys and mouse buttons in various event types. Typical modifier keys are Shift, Control, Meta, Super, Hyper, Alt, Compose, Apple, CapsLock or ShiftLock. Like the X Window System, GDK supports 8 modifier keys and 5 mouse buttons. Since 2.10, GDK recognizes which of the Meta, Super or Hyper keys are mapped to Mod2 - Mod5, and indicates this by setting GDK_SUPER_MASK, GDK_HYPER_MASK or GDK_META_MASK in the state field of key events. GDK_SHIFT_MASK the Shift key. GDK_LOCK_MASK a Lock key (depending on the modifier mapping of the X server this may either be CapsLock or ShiftLock). GDK_CONTROL_MASK the Control key. GDK_MOD1_MASK the fourth modifier key (it depends on the modifier mapping of the X server which key is interpreted as this modifier, but normally it is the Alt key). GDK_MOD2_MASK the fifth modifier key (it depends on the modifier mapping of the X server which key is interpreted as this modifier). GDK_MOD3_MASK the sixth modifier key (it depends on the modifier mapping of the X server which key is interpreted as this modifier). GDK_MOD4_MASK the seventh modifier key (it depends on the modifier mapping of the X server which key is interpreted as this modifier). GDK_MOD5_MASK the eighth modifier key (it depends on the modifier mapping of the X server which key is interpreted as this modifier). GDK_BUTTON1_MASK the first mouse button. GDK_BUTTON2_MASK the second mouse button. GDK_BUTTON3_MASK the third mouse button. GDK_BUTTON4_MASK the fourth mouse button. GDK_BUTTON5_MASK the fifth mouse button. GDK_SUPER_MASK the Super modifier. Since 2.10 GDK_HYPER_MASK the Hyper modifier. Since 2.10 GDK_META_MASK the Meta modifier. Since 2.10 GDK_RELEASE_MASK not used in GDK itself. GTK+ uses it to differentiate between (keyval, modifiers) pairs from key press and release events. GDK_MODIFIER_MASK a mask covering all modifier types.