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_gtkWidgetCBmouse

_gtkWidgetCBmouse defines a callback to a Widgets object when the pointer enters, moves, leaves, ... the widget.

Prototype : fun [* fun [* u0 S I I I I I] u1 u0 I I] *

• * : a Widgets object.


• fun [* u0 S I I I I I] u1 : a callback. These arguments are :
  1. * : the Widgets object (the emitter)
  2. u0 : the user parameter
  3. S : the GTK signal name (see below)
  4. I : the Scol signal flag (see below)
  5. I : the button number (MBUTTON1, MBUTTON2, MBUTTON3, MBUTTON4, ...)
  6. I : the x coordinate, relative to the widget
  7. I : the y coordinate, relative to the widget
  8. I : specifies the crossing reason
     • MOUSE_CROSSING_NORMAL : the pointer has moved,
     • MOUSE_CROSSING_GRAB : a grab is activated,
     • MOUSE_CROSSING_UNGRAB : a grab has been deactivated,
     • MOUSE_CROSSING_STATECHANGED : the widget has changed its state (should be returned in this callback),
     • MOUSE_CROSSING_OTHER : other reason.


• u0 : a user parameter, at your convenience


• I : the Scol signal flag to define the event (one of these values):
  • CB_MOUSE_ENTER ("enter-notify-event" in GTK)
  • CB_MOUSE_LEAVE ("leave-notify-event" in GTK)
  • CB_MOUSE_MOTION ("motion-notify-event" in GTK)
  • CB_MOUSE_PRESSED ("button-press-event" in GTK)
  • CB_MOUSE_RELEASED ("button-release-event" in GTK)


• I : the propagation flag : SIGNAL_NOPROPAGATE or SIGNAL_PROPAGATE.


• Return * : the same Widgets object or nil if an error occurs.

See also

Example