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GdkEvent

     One of the stream of mainloop events.

Object Hierarchy

   GdkEvent

Description

     A GdkEvent is one of the continual stream of events that help make
     up the GTK main loop. Events crossing a widget indicate some form
     of activity - generally, but not exclusively, user activity.

     There are 32 different kinds of GdkEvent, each of which has only
     the properties appropriate to it exposed. Those differences are
     keyed using an enumerated value known as GdkEventType, which is a
     type property of both GdkEventAny and GdkEvent itself. Confused
     yet? That'll be because GdkEvent has a union structure, which is
     unique in GTK+ programming, and because the type property is
     intentionally accessible both through $event->type and through
     $any->type.

     Each event carries GdkEventType and GdkEventAny information. Beyond
     that, the properties that can be accessed within an event depend
     completely on its type. See the table below for details.

     The types of event that can be captured by an object depend on the
     GdkEventMask or masks that are in effect on that object. Each GTK
     widget is created with a set of these flags; this base set can be
     added to or limited within PHP-GTK using set_events() or
     add_events() as appropriate. The masks required by each event type
     are also listed in the table below, where applicable.

     See also: GtkEventBox, add_events() , set_events() , and the
     section on events in the Userguide.

     Further reading: The relevant chapter of Havoc Pennington's GTK+ /
     Gnome Application Development provides an in-depth overview of GDK
     events. It's aimed at C programmers, but is easy to read despite
     that caveat.

   Table 9. GdkEvent properties
   GdkEventType property GdkEventMask
   GDK_NOTHING
   GDK_DELETE
   GDK_DESTROY
   GDK_EXPOSE
   expose
   GDK_EXPOSURE_MASK
   GDK_MOTION_NOTIFY
   motion
   GDK_POINTER_MOTION_MASK
   GDK_BUTTON1_MOTION_MASK
   GDK_BUTTON2_MOTION_MASK
   GDK_BUTTON3_MOTION_MASK
   GDK_BUTTON_PRESS
   GDK_2BUTTON_PRESS
   GDK_3BUTTON_PRESS
   GDK_BUTTON_RELEASE
   button
   GDK_BUTTON_PRESS_MASK
   GDK_BUTTON_RELEASE_MASK
   GDK_KEY_PRESS
   GDK_KEY_RELEASE
   key
   GDK_KEY_PRESS_MASK
   GDK_KEY_RELEASE_MASK
   GDK_ENTER_NOTIFY
   GDK_LEAVE_NOTIFY
   crossing
   GDK_ENTER_NOTIFY_MASK
   GDK_LEAVE_NOTIFY_MASK
   GDK_FOCUS_CHANGE
   focus_change
   GDK_FOCUS_CHANGE_MASK
   GDK_CONFIGURE
   configure
   GDK_MAP
   GDK_UNMAP
   GDK_PROPERTY_NOTIFY
   property
   GDK_PROPERTY_CHANGE_MASK
   GDK_SELECTION_CLEAR
   GDK_SELECTION_REQUEST
   GDK_SELECTION_NOTIFY
   selection
   GDK_PROXIMITY_IN
   GDK_PROXIMITY_OUT
   proximity
   GDK_PROXIMITY_IN_MASK
   GDK_PROXIMITY_OUT_MASK
   GDK_DRAG_ENTER
   GDK_DRAG_LEAVE
   GDK_DRAG_MOTION
   GDK_DRAG_STATUS
   GDK_DROP_START
   GDK_DROP_FINISH
   dnd
   GDK_CLIENT_EVENT
   client
   GDK_VISIBILITY_NOTIFY
   visibility
   GDK_VISIBILITY_NOTIFY_MASK
   GDK_NO_EXPOSE
   no_expose
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