Pileus Git - ~andy/gtk/blob - gtk/gtkwidget.h

   1 /* GTK - The GIMP Toolkit
   2  * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library; if not, write to the
  16  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  17  * Boston, MA 02111-1307, USA.
  18  */
  19
  20 /*
  21  * Modified by the GTK+ Team and others 1997-2000.  See the AUTHORS
  22  * file for a list of people on the GTK+ Team.  See the ChangeLog
  23  * files for a list of changes.  These files are distributed with
  24  * GTK+ at ftp://ftp.gtk.org/pub/gtk/.
  25  */
  26
  27 #if !defined (__GTK_H_INSIDE__) && !defined (GTK_COMPILATION)
  28 #error "Only <gtk/gtk.h> can be included directly."
  29 #endif
  30
  31 #ifndef __GTK_WIDGET_H__
  32 #define __GTK_WIDGET_H__
  33
  34 #include <gdk/gdk.h>
  35 #include <gtk/gtkaccelgroup.h>
  36 #include <gtk/gtkobject.h>
  37 #include <gtk/gtkadjustment.h>
  38 #include <gtk/gtkstyle.h>
  39 #include <gtk/gtksettings.h>
  40 #include <atk/atk.h>
  41
  42 G_BEGIN_DECLS
  43
  44 /**
  45  * GtkWidgetFlags:
  46  * @GTK_TOPLEVEL: widgets without a real parent, as there are #GtkWindow<!-- -->s and
  47  *  #GtkMenu<!-- -->s have this flag set throughout their lifetime.
  48  *  Toplevel widgets always contain their own #GdkWindow.
  49  * @GTK_NO_WINDOW: Indicative for a widget that does not provide its own #GdkWindow.
  50  *  Visible action (e.g. drawing) is performed on the parent's #GdkWindow.
  51  * @GTK_REALIZED: Set by gtk_widget_realize(), unset by gtk_widget_unrealize().
  52  *  A realized widget has an associated #GdkWindow.
  53  * @GTK_MAPPED: Set by gtk_widget_map(), unset by gtk_widget_unmap().
  54  *  Only realized widgets can be mapped. It means that gdk_window_show()
  55  *  has been called on the widgets window(s).
  56  * @GTK_VISIBLE: Set by gtk_widget_show(), unset by gtk_widget_hide(). Implies that a
  57  *  widget will be mapped as soon as its parent is mapped.
  58  * @GTK_SENSITIVE: Set and unset by gtk_widget_set_sensitive().
  59  *  The sensitivity of a widget determines whether it will receive
  60  *  certain events (e.g. button or key presses). One premise for
  61  *  the widget's sensitivity is to have this flag set.
  62  * @GTK_PARENT_SENSITIVE: Set and unset by gtk_widget_set_sensitive() operations on the
  63  *  parents of the widget.
  64  *  This is the second premise for the widget's sensitivity. Once
  65  *  it has %GTK_SENSITIVE and %GTK_PARENT_SENSITIVE set, its state is
  66  *  effectively sensitive. This is expressed (and can be examined) by
  67  *  the #GTK_WIDGET_IS_SENSITIVE macro.
  68  * @GTK_CAN_FOCUS: Determines whether a widget is able to handle focus grabs.
  69  * @GTK_HAS_FOCUS: Set by gtk_widget_grab_focus() for widgets that also
  70  *  have %GTK_CAN_FOCUS set. The flag will be unset once another widget
  71  *  grabs the focus.
  72  * @GTK_CAN_DEFAULT: The widget is allowed to receive the default action via
  73  *  gtk_widget_grab_default() and will reserve space to draw the default if possible
  74  * @GTK_HAS_DEFAULT: The widget currently is receiving the default action and
  75  *  should be drawn appropriately if possible
  76  * @GTK_HAS_GRAB: Set by gtk_grab_add(), unset by gtk_grab_remove(). It means that the
  77  *  widget is in the grab_widgets stack, and will be the preferred one for
  78  *  receiving events other than ones of cosmetic value.
  79  * @GTK_RC_STYLE: Indicates that the widget's style has been looked up through the rc
  80  *  mechanism. It does not imply that the widget actually had a style
  81  *  defined through the rc mechanism.
  82  * @GTK_COMPOSITE_CHILD: Indicates that the widget is a composite child of its parent; see
  83  *  gtk_widget_push_composite_child(), gtk_widget_pop_composite_child().
  84  * @GTK_APP_PAINTABLE: Set and unset by gtk_widget_set_app_paintable().
  85  *  Must be set on widgets whose window the application directly draws on,
  86  *  in order to keep GTK+ from overwriting the drawn stuff.  See
  87  *  <xref linkend="app-paintable-widgets"/> for a detailed
  88  *  description of this flag.
  89  * @GTK_RECEIVES_DEFAULT: The widget when focused will receive the default action and have
  90  *  %GTK_HAS_DEFAULT set even if there is a different widget set as default.
  91  * @GTK_DOUBLE_BUFFERED: Set and unset by gtk_widget_set_double_buffered().
  92  *  Indicates that exposes done on the widget should be
  93  *  double-buffered.  See <xref linkend="double-buffering"/> for a
  94  *  detailed discussion of how double-buffering works in GTK+ and
  95  *  why you may want to disable it for special cases.
  96  * @GTK_NO_SHOW_ALL:
  97  *
  98  * Tells about certain properties of the widget.
  99  */
 100 typedef enum
 101 {
 102   GTK_TOPLEVEL         = 1 << 4,
 103   GTK_NO_WINDOW        = 1 << 5,
 104   GTK_REALIZED         = 1 << 6,
 105   GTK_MAPPED           = 1 << 7,
 106   GTK_VISIBLE          = 1 << 8,
 107   GTK_SENSITIVE        = 1 << 9,
 108   GTK_PARENT_SENSITIVE = 1 << 10,
 109   GTK_CAN_FOCUS        = 1 << 11,
 110   GTK_HAS_FOCUS        = 1 << 12,
 111   GTK_CAN_DEFAULT      = 1 << 13,
 112   GTK_HAS_DEFAULT      = 1 << 14,
 113   GTK_HAS_GRAB         = 1 << 15,
 114   GTK_RC_STYLE         = 1 << 16,
 115   GTK_COMPOSITE_CHILD  = 1 << 17,
 116   GTK_APP_PAINTABLE    = 1 << 18,
 117   GTK_RECEIVES_DEFAULT = 1 << 19,
 118   GTK_DOUBLE_BUFFERED  = 1 << 20,
 119   GTK_NO_SHOW_ALL      = 1 << 21,
 120   GTK_MULTIDEVICE      = 1 << 22
 121 } GtkWidgetFlags;
 122
 123 /* Kinds of widget-specific help */
 124 typedef enum
 125 {
 126   GTK_WIDGET_HELP_TOOLTIP,
 127   GTK_WIDGET_HELP_WHATS_THIS
 128 } GtkWidgetHelpType;
 129
 130 /* Macro for casting a pointer to a GtkWidget or GtkWidgetClass pointer.
 131  * Macros for testing whether `widget' or `klass' are of type GTK_TYPE_WIDGET.
 132  */
 133 #define GTK_TYPE_WIDGET                   (gtk_widget_get_type ())
 134 #define GTK_WIDGET(widget)                (G_TYPE_CHECK_INSTANCE_CAST ((widget), GTK_TYPE_WIDGET, GtkWidget))
 135 #define GTK_WIDGET_CLASS(klass)           (G_TYPE_CHECK_CLASS_CAST ((klass), GTK_TYPE_WIDGET, GtkWidgetClass))
 136 #define GTK_IS_WIDGET(widget)             (G_TYPE_CHECK_INSTANCE_TYPE ((widget), GTK_TYPE_WIDGET))
 137 #define GTK_IS_WIDGET_CLASS(klass)        (G_TYPE_CHECK_CLASS_TYPE ((klass), GTK_TYPE_WIDGET))
 138 #define GTK_WIDGET_GET_CLASS(obj)         (G_TYPE_INSTANCE_GET_CLASS ((obj), GTK_TYPE_WIDGET, GtkWidgetClass))
 139
 140 /* Macros for extracting the widget flags from GtkWidget.
 141  */
 142 /**
 143  * GTK_WIDGET_FLAGS:
 144  * @wid: a #GtkWidget.
 145  *
 146  * Returns the widget flags from @wid.
 147  *
 148  * Deprecated: 2.20: Use the proper function to test individual states:
 149  * gtk_widget_get_app_paintable(), gtk_widget_get_can_default(),
 150  * gtk_widget_get_can_focus(), gtk_widget_get_double_buffered(),
 151  * gtk_widget_has_default(), gtk_widget_is_drawable(),
 152  * gtk_widget_has_focus(), gtk_widget_has_grab(), gtk_widget_get_mapped(),
 153  * gtk_widget_get_has_window(), gtk_widget_has_rc_style(),
 154  * gtk_widget_get_realized(), gtk_widget_get_receives_default(),
 155  * gtk_widget_get_sensitive(), gtk_widget_is_sensitive(),
 156  * gtk_widget_is_toplevel() or gtk_widget_get_visible().
 157  */
 158 #define GTK_WIDGET_FLAGS(wid)             (GTK_OBJECT_FLAGS (wid))
 159 /* FIXME: Deprecating GTK_WIDGET_FLAGS requires fixing GTK internals. */
 160
 161 /* Macros for setting and clearing widget flags.
 162  */
 163 /**
 164  * GTK_WIDGET_SET_FLAGS:
 165  * @wid: a #GtkWidget.
 166  * @flag: the flags to set.
 167  *
 168  * Turns on certain widget flags.
 169  *
 170  * Deprecated: 2.22: Use the proper function instead: gtk_widget_set_app_paintable(),
 171  *   gtk_widget_set_can_default(), gtk_widget_set_can_focus(),
 172  *   gtk_widget_set_double_buffered(), gtk_widget_set_has_window(),
 173  *   gtk_widget_set_mapped(), gtk_widget_set_no_show_all(),
 174  *   gtk_widget_set_realized(), gtk_widget_set_receives_default(),
 175  *   gtk_widget_set_sensitive() or gtk_widget_set_visible().
 176  *
 177  */
 178 #define GTK_WIDGET_SET_FLAGS(wid,flag)    G_STMT_START{ (GTK_WIDGET_FLAGS (wid) |= (flag)); }G_STMT_END
 179 /* FIXME: Deprecating GTK_WIDGET_SET_FLAGS requires fixing GTK internals. */
 180
 181 /**
 182  * GTK_WIDGET_UNSET_FLAGS:
 183  * @wid: a #GtkWidget.
 184  * @flag: the flags to unset.
 185  *
 186  * Turns off certain widget flags.
 187  *
 188  * Deprecated: 2.22: Use the proper function instead. See GTK_WIDGET_SET_FLAGS().
 189  */
 190 #define GTK_WIDGET_UNSET_FLAGS(wid,flag)  G_STMT_START{ (GTK_WIDGET_FLAGS (wid) &= ~(flag)); }G_STMT_END
 191 /* FIXME: Deprecating GTK_WIDGET_UNSET_FLAGS requires fixing GTK internals. */
 192
 193 #define GTK_TYPE_REQUISITION              (gtk_requisition_get_type ())
 194
 195 /* forward declaration to avoid excessive includes (and concurrent includes)
 196  */
 197 typedef struct _GtkRequisition     GtkRequisition;
 198 typedef struct _GtkSelectionData   GtkSelectionData;
 199 typedef struct _GtkWidgetClass     GtkWidgetClass;
 200 typedef struct _GtkWidgetAuxInfo   GtkWidgetAuxInfo;
 201 typedef struct _GtkWidgetShapeInfo GtkWidgetShapeInfo;
 202 typedef struct _GtkClipboard       GtkClipboard;
 203 typedef struct _GtkTooltip         GtkTooltip;
 204 typedef struct _GtkWindow          GtkWindow;
 205
 206
 207 /**
 208  * GtkAllocation:
 209  * @x: the X position of the widget's area relative to its parents allocation.
 210  * @y: the Y position of the widget's area relative to its parents allocation.
 211  * @width: the width of the widget's allocated area.
 212  * @height: the height of the widget's allocated area.
 213  *
 214  * A <structname>GtkAllocation</structname> of a widget represents region which has been allocated to the
 215  * widget by its parent. It is a subregion of its parents allocation. See
 216  * <xref linkend="size-allocation"/> for more information.
 217  */
 218 typedef         GdkRectangle       GtkAllocation;
 219
 220 /**
 221  * GtkCallback:
 222  * @widget: the widget to operate on
 223  * @data: user-supplied data
 224  *
 225  * The type of the callback functions used for e.g. iterating over
 226  * the children of a container, see gtk_container_foreach().
 227  */
 228 typedef void    (*GtkCallback)     (GtkWidget        *widget,
 229                                     gpointer          data);
 230
 231 /**
 232  * GtkRequisition:
 233  * @width: the widget's desired width
 234  * @height: the widget's desired height
 235  *
 236  * A <structname>GtkRequisition</structname> represents the desired size of a widget. See
 237  * <xref linkend="size-requisition"/> for more information.
 238  */
 239 struct _GtkRequisition
 240 {
 241   gint width;
 242   gint height;
 243 };
 244
 245 /* The widget is the base of the tree for displayable objects.
 246  *  (A displayable object is one which takes up some amount
 247  *  of screen real estate). It provides a common base and interface
 248  *  which actual widgets must adhere to.
 249  */
 250 struct _GtkWidget
 251 {
 252   /* The object structure needs to be the first
 253    *  element in the widget structure in order for
 254    *  the object mechanism to work correctly. This
 255    *  allows a GtkWidget pointer to be cast to a
 256    *  GtkObject pointer.
 257    */
 258   GtkObject object;
 259
 260   /* 16 bits of internally used private flags.
 261    * this will be packed into the same 4 byte alignment frame that
 262    * state and saved_state go. we therefore don't waste any new
 263    * space on this.
 264    */
 265   guint16 GSEAL (private_flags);
 266
 267   /* The state of the widget. There are actually only
 268    *  5 widget states (defined in "gtkenums.h").
 269    */
 270   guint8 GSEAL (state);
 271
 272   /* The saved state of the widget. When a widget's state
 273    *  is changed to GTK_STATE_INSENSITIVE via
 274    *  "gtk_widget_set_state" or "gtk_widget_set_sensitive"
 275    *  the old state is kept around in this field. The state
 276    *  will be restored once the widget gets sensitive again.
 277    */
 278   guint8 GSEAL (saved_state);
 279
 280   /* The widget's name. If the widget does not have a name
 281    *  (the name is NULL), then its name (as returned by
 282    *  "gtk_widget_get_name") is its class's name.
 283    * Among other things, the widget name is used to determine
 284    *  the style to use for a widget.
 285    */
 286   gchar *GSEAL (name);
 287
 288   /*< public >*/
 289
 290   /* The style for the widget. The style contains the
 291    *  colors the widget should be drawn in for each state
 292    *  along with graphics contexts used to draw with and
 293    *  the font to use for text.
 294    */
 295   GtkStyle *GSEAL (style);
 296
 297   /* The widget's desired size.
 298    */
 299   GtkRequisition GSEAL (requisition);
 300
 301   /* The widget's allocated size.
 302    */
 303   GtkAllocation GSEAL (allocation);
 304
 305   /* The widget's window or its parent window if it does
 306    *  not have a window. (Which will be indicated by the
 307    *  GTK_NO_WINDOW flag being set).
 308    */
 309   GdkWindow *GSEAL (window);
 310
 311   /* The widget's parent.
 312    */
 313   GtkWidget *GSEAL (parent);
 314 };
 315
 316 /**
 317  * GtkWidgetClass:
 318  * @parent_class:
 319  * @activate_signal:
 320  * @set_scroll_adjustments_signal:
 321  *
 322  * <structfield>activate_signal</structfield>
 323  * The signal to emit when a widget of this class is activated,
 324  * gtk_widget_activate() handles the emission. Implementation of this
 325  * signal is optional.
 326  *
 327  *
 328  * <structfield>set_scroll_adjustment_signal</structfield>
 329  * This signal is emitted  when a widget of this class is added
 330  * to a scrolling aware parent, gtk_widget_set_scroll_adjustments()
 331  * handles the emission.
 332  * Implementation of this signal is optional.
 333  */
 334 struct _GtkWidgetClass
 335 {
 336   /* The object class structure needs to be the first
 337    *  element in the widget class structure in order for
 338    *  the class mechanism to work correctly. This allows a
 339    *  GtkWidgetClass pointer to be cast to a GtkObjectClass
 340    *  pointer.
 341    */
 342   GtkObjectClass parent_class;
 343
 344   /*< public >*/
 345
 346   guint activate_signal;
 347
 348   guint set_scroll_adjustments_signal;
 349
 350   /*< private >*/
 351
 352   /* seldomly overidden */
 353   void (*dispatch_child_properties_changed) (GtkWidget   *widget,
 354                                              guint        n_pspecs,
 355                                              GParamSpec **pspecs);
 356
 357   /* basics */
 358   void (* show)                (GtkWidget        *widget);
 359   void (* show_all)            (GtkWidget        *widget);
 360   void (* hide)                (GtkWidget        *widget);
 361   void (* hide_all)            (GtkWidget        *widget);
 362   void (* map)                 (GtkWidget        *widget);
 363   void (* unmap)               (GtkWidget        *widget);
 364   void (* realize)             (GtkWidget        *widget);
 365   void (* unrealize)           (GtkWidget        *widget);
 366   void (* size_request)        (GtkWidget        *widget,
 367                                 GtkRequisition   *requisition);
 368   void (* size_allocate)       (GtkWidget        *widget,
 369                                 GtkAllocation    *allocation);
 370   void (* state_changed)       (GtkWidget        *widget,
 371                                 GtkStateType      previous_state);
 372   void (* parent_set)          (GtkWidget        *widget,
 373                                 GtkWidget        *previous_parent);
 374   void (* hierarchy_changed)   (GtkWidget        *widget,
 375                                 GtkWidget        *previous_toplevel);
 376   void (* style_set)           (GtkWidget        *widget,
 377                                 GtkStyle         *previous_style);
 378   void (* direction_changed)   (GtkWidget        *widget,
 379                                 GtkTextDirection  previous_direction);
 380   void (* grab_notify)         (GtkWidget        *widget,
 381                                 gboolean          was_grabbed);
 382   void (* child_notify)        (GtkWidget        *widget,
 383                                 GParamSpec       *pspec);
 384
 385   /* Mnemonics */
 386   gboolean (* mnemonic_activate) (GtkWidget    *widget,
 387                                   gboolean      group_cycling);
 388
 389   /* explicit focus */
 390   void     (* grab_focus)      (GtkWidget        *widget);
 391   gboolean (* focus)           (GtkWidget        *widget,
 392                                 GtkDirectionType  direction);
 393
 394   /* events */
 395   gboolean (* event)                    (GtkWidget           *widget,
 396                                          GdkEvent            *event);
 397   gboolean (* button_press_event)       (GtkWidget           *widget,
 398                                          GdkEventButton      *event);
 399   gboolean (* button_release_event)     (GtkWidget           *widget,
 400                                          GdkEventButton      *event);
 401   gboolean (* scroll_event)             (GtkWidget           *widget,
 402                                          GdkEventScroll      *event);
 403   gboolean (* motion_notify_event)      (GtkWidget           *widget,
 404                                          GdkEventMotion      *event);
 405   gboolean (* delete_event)             (GtkWidget           *widget,
 406                                          GdkEventAny         *event);
 407   gboolean (* destroy_event)            (GtkWidget           *widget,
 408                                          GdkEventAny         *event);
 409   gboolean (* expose_event)             (GtkWidget           *widget,
 410                                          GdkEventExpose      *event);
 411   gboolean (* key_press_event)          (GtkWidget           *widget,
 412                                          GdkEventKey         *event);
 413   gboolean (* key_release_event)        (GtkWidget           *widget,
 414                                          GdkEventKey         *event);
 415   gboolean (* enter_notify_event)       (GtkWidget           *widget,
 416                                          GdkEventCrossing    *event);
 417   gboolean (* leave_notify_event)       (GtkWidget           *widget,
 418                                          GdkEventCrossing    *event);
 419   gboolean (* configure_event)          (GtkWidget           *widget,
 420                                          GdkEventConfigure   *event);
 421   gboolean (* focus_in_event)           (GtkWidget           *widget,
 422                                          GdkEventFocus       *event);
 423   gboolean (* focus_out_event)          (GtkWidget           *widget,
 424                                          GdkEventFocus       *event);
 425   gboolean (* map_event)                (GtkWidget           *widget,
 426                                          GdkEventAny         *event);
 427   gboolean (* unmap_event)              (GtkWidget           *widget,
 428                                          GdkEventAny         *event);
 429   gboolean (* property_notify_event)    (GtkWidget           *widget,
 430                                          GdkEventProperty    *event);
 431   gboolean (* selection_clear_event)    (GtkWidget           *widget,
 432                                          GdkEventSelection   *event);
 433   gboolean (* selection_request_event)  (GtkWidget           *widget,
 434                                          GdkEventSelection   *event);
 435   gboolean (* selection_notify_event)   (GtkWidget           *widget,
 436                                          GdkEventSelection   *event);
 437   gboolean (* proximity_in_event)       (GtkWidget           *widget,
 438                                          GdkEventProximity   *event);
 439   gboolean (* proximity_out_event)      (GtkWidget           *widget,
 440                                          GdkEventProximity   *event);
 441   gboolean (* visibility_notify_event)  (GtkWidget           *widget,
 442                                          GdkEventVisibility  *event);
 443   gboolean (* client_event)             (GtkWidget           *widget,
 444                                          GdkEventClient      *event);
 445   gboolean (* no_expose_event)          (GtkWidget           *widget,
 446                                          GdkEventAny         *event);
 447   gboolean (* window_state_event)       (GtkWidget           *widget,
 448                                          GdkEventWindowState *event);
 449
 450   /* selection */
 451   void (* selection_get)           (GtkWidget          *widget,
 452                                     GtkSelectionData   *selection_data,
 453                                     guint               info,
 454                                     guint               time_);
 455   void (* selection_received)      (GtkWidget          *widget,
 456                                     GtkSelectionData   *selection_data,
 457                                     guint               time_);
 458
 459   /* Source side drag signals */
 460   void (* drag_begin)              (GtkWidget          *widget,
 461                                     GdkDragContext     *context);
 462   void (* drag_end)                (GtkWidget          *widget,
 463                                     GdkDragContext     *context);
 464   void (* drag_data_get)           (GtkWidget          *widget,
 465                                     GdkDragContext     *context,
 466                                     GtkSelectionData   *selection_data,
 467                                     guint               info,
 468                                     guint               time_);
 469   void (* drag_data_delete)        (GtkWidget          *widget,
 470                                     GdkDragContext     *context);
 471
 472   /* Target side drag signals */
 473   void (* drag_leave)              (GtkWidget          *widget,
 474                                     GdkDragContext     *context,
 475                                     guint               time_);
 476   gboolean (* drag_motion)         (GtkWidget          *widget,
 477                                     GdkDragContext     *context,
 478                                     gint                x,
 479                                     gint                y,
 480                                     guint               time_);
 481   gboolean (* drag_drop)           (GtkWidget          *widget,
 482                                     GdkDragContext     *context,
 483                                     gint                x,
 484                                     gint                y,
 485                                     guint               time_);
 486   void (* drag_data_received)      (GtkWidget          *widget,
 487                                     GdkDragContext     *context,
 488                                     gint                x,
 489                                     gint                y,
 490                                     GtkSelectionData   *selection_data,
 491                                     guint               info,
 492                                     guint               time_);
 493
 494   /* Signals used only for keybindings */
 495   gboolean (* popup_menu)          (GtkWidget          *widget);
 496
 497   /* If a widget has multiple tooltips/whatsthis, it should show the
 498    * one for the current focus location, or if that doesn't make
 499    * sense, should cycle through them showing each tip alongside
 500    * whatever piece of the widget it applies to.
 501    */
 502   gboolean (* show_help)           (GtkWidget          *widget,
 503                                     GtkWidgetHelpType   help_type);
 504
 505   /* accessibility support
 506    */
 507   AtkObject*   (*get_accessible)     (GtkWidget *widget);
 508
 509   void         (*screen_changed)     (GtkWidget *widget,
 510                                       GdkScreen *previous_screen);
 511   gboolean     (*can_activate_accel) (GtkWidget *widget,
 512                                       guint      signal_id);
 513
 514   /* Sent when a grab is broken. */
 515   gboolean (*grab_broken_event) (GtkWidget           *widget,
 516                                  GdkEventGrabBroken  *event);
 517
 518   void         (* composited_changed) (GtkWidget *widget);
 519
 520   gboolean     (* query_tooltip)      (GtkWidget  *widget,
 521                                        gint        x,
 522                                        gint        y,
 523                                        gboolean    keyboard_tooltip,
 524                                        GtkTooltip *tooltip);
 525   /* Signals without a C default handler class slot:
 526    * gboolean   (*damage_event) (GtkWidget      *widget,
 527    *                             GdkEventExpose *event);
 528    */
 529
 530   /* Padding for future expansion */
 531   void (*_gtk_reserved5) (void);
 532   void (*_gtk_reserved6) (void);
 533   void (*_gtk_reserved7) (void);
 534 };
 535
 536 struct _GtkWidgetAuxInfo
 537 {
 538   gint x;
 539   gint y;
 540   gint width;
 541   gint height;
 542
 543   guint x_set : 1;
 544   guint y_set : 1;
 545 };
 546
 547 struct _GtkWidgetShapeInfo
 548 {
 549   gint16     offset_x;
 550   gint16     offset_y;
 551   GdkBitmap *shape_mask;
 552 };
 553
 554 GType      gtk_widget_get_type            (void) G_GNUC_CONST;
 555 GtkWidget* gtk_widget_new                 (GType                type,
 556                                            const gchar         *first_property_name,
 557                                            ...);
 558 void       gtk_widget_destroy             (GtkWidget           *widget);
 559 void       gtk_widget_destroyed           (GtkWidget           *widget,
 560                                            GtkWidget          **widget_pointer);
 561 void       gtk_widget_unparent            (GtkWidget           *widget);
 562 void       gtk_widget_show                (GtkWidget           *widget);
 563 void       gtk_widget_show_now            (GtkWidget           *widget);
 564 void       gtk_widget_hide                (GtkWidget           *widget);
 565 void       gtk_widget_show_all            (GtkWidget           *widget);
 566 void       gtk_widget_hide_all            (GtkWidget           *widget);
 567 void       gtk_widget_set_no_show_all     (GtkWidget           *widget,
 568                                            gboolean             no_show_all);
 569 gboolean   gtk_widget_get_no_show_all     (GtkWidget           *widget);
 570 void       gtk_widget_map                 (GtkWidget           *widget);
 571 void       gtk_widget_unmap               (GtkWidget           *widget);
 572 void       gtk_widget_realize             (GtkWidget           *widget);
 573 void       gtk_widget_unrealize           (GtkWidget           *widget);
 574
 575 /* Queuing draws */
 576 void       gtk_widget_queue_draw          (GtkWidget           *widget);
 577 void       gtk_widget_queue_draw_area     (GtkWidget           *widget,
 578                                            gint                 x,
 579                                            gint                 y,
 580                                            gint                 width,
 581                                            gint                 height);
 582 void       gtk_widget_queue_resize        (GtkWidget           *widget);
 583 void       gtk_widget_queue_resize_no_redraw (GtkWidget *widget);
 584 void       gtk_widget_size_request        (GtkWidget           *widget,
 585                                            GtkRequisition      *requisition);
 586 void       gtk_widget_size_allocate       (GtkWidget           *widget,
 587                                            GtkAllocation       *allocation);
 588 void       gtk_widget_get_child_requisition (GtkWidget         *widget,
 589                                              GtkRequisition    *requisition);
 590 void       gtk_widget_add_accelerator     (GtkWidget           *widget,
 591                                            const gchar         *accel_signal,
 592                                            GtkAccelGroup       *accel_group,
 593                                            guint                accel_key,
 594                                            GdkModifierType      accel_mods,
 595                                            GtkAccelFlags        accel_flags);
 596 gboolean   gtk_widget_remove_accelerator  (GtkWidget           *widget,
 597                                            GtkAccelGroup       *accel_group,
 598                                            guint                accel_key,
 599                                            GdkModifierType      accel_mods);
 600 void       gtk_widget_set_accel_path      (GtkWidget           *widget,
 601                                            const gchar         *accel_path,
 602                                            GtkAccelGroup       *accel_group);
 603 const gchar* _gtk_widget_get_accel_path   (GtkWidget           *widget,
 604                                            gboolean            *locked);
 605 GList*     gtk_widget_list_accel_closures (GtkWidget           *widget);
 606 gboolean   gtk_widget_can_activate_accel  (GtkWidget           *widget,
 607                                            guint                signal_id);
 608 gboolean   gtk_widget_mnemonic_activate   (GtkWidget           *widget,
 609                                            gboolean             group_cycling);
 610 gboolean   gtk_widget_event               (GtkWidget           *widget,
 611                                            GdkEvent            *event);
 612 gint       gtk_widget_send_expose         (GtkWidget           *widget,
 613                                            GdkEvent            *event);
 614 gboolean   gtk_widget_send_focus_change   (GtkWidget           *widget,
 615                                            GdkEvent            *event);
 616
 617 gboolean   gtk_widget_activate               (GtkWidget        *widget);
 618 gboolean   gtk_widget_set_scroll_adjustments (GtkWidget        *widget,
 619                                               GtkAdjustment    *hadjustment,
 620                                               GtkAdjustment    *vadjustment);
 621
 622 void       gtk_widget_reparent            (GtkWidget           *widget,
 623                                            GtkWidget           *new_parent);
 624 gboolean   gtk_widget_intersect           (GtkWidget           *widget,
 625                                            const GdkRectangle  *area,
 626                                            GdkRectangle        *intersection);
 627 cairo_region_t *gtk_widget_region_intersect       (GtkWidget           *widget,
 628                                            const cairo_region_t     *region);
 629
 630 void    gtk_widget_freeze_child_notify    (GtkWidget           *widget);
 631 void    gtk_widget_child_notify           (GtkWidget           *widget,
 632                                            const gchar         *child_property);
 633 void    gtk_widget_thaw_child_notify      (GtkWidget           *widget);
 634
 635 void       gtk_widget_set_can_focus       (GtkWidget           *widget,
 636                                            gboolean             can_focus);
 637 gboolean   gtk_widget_get_can_focus       (GtkWidget           *widget);
 638 gboolean   gtk_widget_has_focus           (GtkWidget           *widget);
 639 gboolean   gtk_widget_is_focus            (GtkWidget           *widget);
 640 void       gtk_widget_grab_focus          (GtkWidget           *widget);
 641
 642 void       gtk_widget_set_can_default     (GtkWidget           *widget,
 643                                            gboolean             can_default);
 644 gboolean   gtk_widget_get_can_default     (GtkWidget           *widget);
 645 gboolean   gtk_widget_has_default         (GtkWidget           *widget);
 646 void       gtk_widget_grab_default        (GtkWidget           *widget);
 647
 648 void      gtk_widget_set_receives_default (GtkWidget           *widget,
 649                                            gboolean             receives_default);
 650 gboolean  gtk_widget_get_receives_default (GtkWidget           *widget);
 651
 652 gboolean   gtk_widget_has_grab            (GtkWidget           *widget);
 653
 654 gboolean   gtk_widget_device_is_shadowed  (GtkWidget           *widget,
 655                                            GdkDevice           *device);
 656
 657
 658 void                  gtk_widget_set_name               (GtkWidget    *widget,
 659                                                          const gchar  *name);
 660 G_CONST_RETURN gchar* gtk_widget_get_name               (GtkWidget    *widget);
 661
 662 void                  gtk_widget_set_state              (GtkWidget    *widget,
 663                                                          GtkStateType  state);
 664 GtkStateType          gtk_widget_get_state              (GtkWidget    *widget);
 665
 666 void                  gtk_widget_set_sensitive          (GtkWidget    *widget,
 667                                                          gboolean      sensitive);
 668 gboolean              gtk_widget_get_sensitive          (GtkWidget    *widget);
 669 gboolean              gtk_widget_is_sensitive           (GtkWidget    *widget);
 670
 671 void                  gtk_widget_set_visible            (GtkWidget    *widget,
 672                                                          gboolean      visible);
 673 gboolean              gtk_widget_get_visible            (GtkWidget    *widget);
 674
 675 void                  gtk_widget_set_has_window         (GtkWidget    *widget,
 676                                                          gboolean      has_window);
 677 gboolean              gtk_widget_get_has_window         (GtkWidget    *widget);
 678
 679 gboolean              gtk_widget_is_toplevel            (GtkWidget    *widget);
 680 gboolean              gtk_widget_is_drawable            (GtkWidget    *widget);
 681 void                  gtk_widget_set_realized           (GtkWidget    *widget,
 682                                                          gboolean      realized);
 683 gboolean              gtk_widget_get_realized           (GtkWidget    *widget);
 684 void                  gtk_widget_set_mapped             (GtkWidget    *widget,
 685                                                          gboolean      mapped);
 686 gboolean              gtk_widget_get_mapped             (GtkWidget    *widget);
 687
 688 void                  gtk_widget_set_app_paintable      (GtkWidget    *widget,
 689                                                          gboolean      app_paintable);
 690 gboolean              gtk_widget_get_app_paintable      (GtkWidget    *widget);
 691
 692 void                  gtk_widget_set_double_buffered    (GtkWidget    *widget,
 693                                                          gboolean      double_buffered);
 694 gboolean              gtk_widget_get_double_buffered    (GtkWidget    *widget);
 695
 696 void                  gtk_widget_set_redraw_on_allocate (GtkWidget    *widget,
 697                                                          gboolean      redraw_on_allocate);
 698
 699 void                  gtk_widget_set_parent             (GtkWidget    *widget,
 700                                                          GtkWidget    *parent);
 701 GtkWidget           * gtk_widget_get_parent             (GtkWidget    *widget);
 702
 703 void                  gtk_widget_set_parent_window      (GtkWidget    *widget,
 704                                                          GdkWindow    *parent_window);
 705 GdkWindow           * gtk_widget_get_parent_window      (GtkWidget    *widget);
 706
 707 void                  gtk_widget_set_child_visible      (GtkWidget    *widget,
 708                                                          gboolean      is_visible);
 709 gboolean              gtk_widget_get_child_visible      (GtkWidget    *widget);
 710
 711 void                  gtk_widget_set_window             (GtkWidget    *widget,
 712                                                          GdkWindow    *window);
 713 GdkWindow           * gtk_widget_get_window             (GtkWidget    *widget);
 714
 715 void                  gtk_widget_get_allocation         (GtkWidget     *widget,
 716                                                          GtkAllocation *allocation);
 717 void                  gtk_widget_set_allocation         (GtkWidget     *widget,
 718                                                          const GtkAllocation *allocation);
 719
 720 void                  gtk_widget_get_requisition        (GtkWidget     *widget,
 721                                                          GtkRequisition *requisition);
 722
 723 gboolean   gtk_widget_child_focus         (GtkWidget           *widget,
 724                                            GtkDirectionType     direction);
 725 gboolean   gtk_widget_keynav_failed       (GtkWidget           *widget,
 726                                            GtkDirectionType     direction);
 727 void       gtk_widget_error_bell          (GtkWidget           *widget);
 728
 729 void       gtk_widget_set_size_request    (GtkWidget           *widget,
 730                                            gint                 width,
 731                                            gint                 height);
 732 void       gtk_widget_get_size_request    (GtkWidget           *widget,
 733                                            gint                *width,
 734                                            gint                *height);
 735 void       gtk_widget_set_events          (GtkWidget           *widget,
 736                                            gint                 events);
 737 void       gtk_widget_add_events          (GtkWidget           *widget,
 738                                            gint                 events);
 739 void       gtk_widget_set_device_events   (GtkWidget           *widget,
 740                                            GdkDevice           *device,
 741                                            GdkEventMask         events);
 742 void       gtk_widget_add_device_events   (GtkWidget           *widget,
 743                                            GdkDevice           *device,
 744                                            GdkEventMask         events);
 745 void       gtk_widget_set_extension_events (GtkWidget           *widget,
 746                                             GdkExtensionMode    mode);
 747
 748 GdkExtensionMode gtk_widget_get_extension_events (GtkWidget     *widget);
 749 GtkWidget*   gtk_widget_get_toplevel    (GtkWidget      *widget);
 750 GtkWidget*   gtk_widget_get_ancestor    (GtkWidget      *widget,
 751                                          GType           widget_type);
 752 GdkColormap* gtk_widget_get_colormap    (GtkWidget      *widget);
 753 GdkVisual*   gtk_widget_get_visual      (GtkWidget      *widget);
 754
 755 GdkScreen *   gtk_widget_get_screen      (GtkWidget *widget);
 756 gboolean      gtk_widget_has_screen      (GtkWidget *widget);
 757 GdkDisplay *  gtk_widget_get_display     (GtkWidget *widget);
 758 GdkWindow *   gtk_widget_get_root_window (GtkWidget *widget);
 759 GtkSettings*  gtk_widget_get_settings    (GtkWidget *widget);
 760 GtkClipboard *gtk_widget_get_clipboard   (GtkWidget *widget,
 761                                           GdkAtom    selection);
 762 GdkPixmap *   gtk_widget_get_snapshot    (GtkWidget    *widget,
 763                                           GdkRectangle *clip_rect);
 764
 765 /* Multidevice support */
 766 gboolean         gtk_widget_get_support_multidevice (GtkWidget      *widget);
 767 void             gtk_widget_set_support_multidevice (GtkWidget      *widget,
 768                                                      gboolean        support_multidevice);
 769
 770 /* Accessibility support */
 771 AtkObject*       gtk_widget_get_accessible               (GtkWidget          *widget);
 772
 773 /* The following functions must not be called on an already
 774  * realized widget. Because it is possible that somebody
 775  * can call get_colormap() or get_visual() and save the
 776  * result, these functions are probably only safe to
 777  * call in a widget's init() function.
 778  */
 779 void         gtk_widget_set_colormap    (GtkWidget      *widget,
 780                                          GdkColormap    *colormap);
 781
 782 gint         gtk_widget_get_events      (GtkWidget      *widget);
 783 GdkEventMask gtk_widget_get_device_events (GtkWidget    *widget,
 784                                            GdkDevice    *device);
 785 void         gtk_widget_get_pointer     (GtkWidget      *widget,
 786                                          gint           *x,
 787                                          gint           *y);
 788
 789 gboolean     gtk_widget_is_ancestor     (GtkWidget      *widget,
 790                                          GtkWidget      *ancestor);
 791
 792 gboolean     gtk_widget_translate_coordinates (GtkWidget  *src_widget,
 793                                                GtkWidget  *dest_widget,
 794                                                gint        src_x,
 795                                                gint        src_y,
 796                                                gint       *dest_x,
 797                                                gint       *dest_y);
 798
 799 /* Hide widget and return TRUE.
 800  */
 801 gboolean     gtk_widget_hide_on_delete  (GtkWidget      *widget);
 802
 803 /* Widget styles.
 804  */
 805 void        gtk_widget_style_attach       (GtkWidget            *widget);
 806
 807 gboolean    gtk_widget_has_rc_style       (GtkWidget            *widget);
 808 void        gtk_widget_set_style          (GtkWidget            *widget,
 809                                            GtkStyle             *style);
 810 void        gtk_widget_ensure_style       (GtkWidget            *widget);
 811 GtkStyle *  gtk_widget_get_style          (GtkWidget            *widget);
 812
 813 void        gtk_widget_modify_style       (GtkWidget            *widget,
 814                                            GtkRcStyle           *style);
 815 GtkRcStyle *gtk_widget_get_modifier_style (GtkWidget            *widget);
 816 void        gtk_widget_modify_fg          (GtkWidget            *widget,
 817                                            GtkStateType          state,
 818                                            const GdkColor       *color);
 819 void        gtk_widget_modify_bg          (GtkWidget            *widget,
 820                                            GtkStateType          state,
 821                                            const GdkColor       *color);
 822 void        gtk_widget_modify_text        (GtkWidget            *widget,
 823                                            GtkStateType          state,
 824                                            const GdkColor       *color);
 825 void        gtk_widget_modify_base        (GtkWidget            *widget,
 826                                            GtkStateType          state,
 827                                            const GdkColor       *color);
 828 void        gtk_widget_modify_cursor      (GtkWidget            *widget,
 829                                            const GdkColor       *primary,
 830                                            const GdkColor       *secondary);
 831 void        gtk_widget_modify_font        (GtkWidget            *widget,
 832                                            PangoFontDescription *font_desc);
 833 void        gtk_widget_modify_symbolic_color (GtkWidget         *widget,
 834                                            const gchar          *name,
 835                                            const GdkColor       *color);
 836
 837 PangoContext *gtk_widget_create_pango_context (GtkWidget   *widget);
 838 PangoContext *gtk_widget_get_pango_context    (GtkWidget   *widget);
 839 PangoLayout  *gtk_widget_create_pango_layout  (GtkWidget   *widget,
 840                                                const gchar *text);
 841
 842 GdkPixbuf    *gtk_widget_render_icon          (GtkWidget   *widget,
 843                                                const gchar *stock_id,
 844                                                GtkIconSize  size,
 845                                                const gchar *detail);
 846
 847 /* handle composite names for GTK_COMPOSITE_CHILD widgets,
 848  * the returned name is newly allocated.
 849  */
 850 void   gtk_widget_set_composite_name    (GtkWidget      *widget,
 851                                          const gchar    *name);
 852 gchar* gtk_widget_get_composite_name    (GtkWidget      *widget);
 853
 854 /* Descend recursively and set rc-style on all widgets without user styles */
 855 void       gtk_widget_reset_rc_styles   (GtkWidget      *widget);
 856
 857 /* Push/pop pairs, to change default values upon a widget's creation.
 858  * This will override the values that got set by the
 859  * gtk_widget_set_default_* () functions.
 860  */
 861 void         gtk_widget_push_colormap        (GdkColormap *cmap);
 862 void         gtk_widget_push_composite_child (void);
 863 void         gtk_widget_pop_composite_child  (void);
 864 void         gtk_widget_pop_colormap         (void);
 865
 866 /* widget style properties
 867  */
 868 void gtk_widget_class_install_style_property        (GtkWidgetClass     *klass,
 869                                                      GParamSpec         *pspec);
 870 void gtk_widget_class_install_style_property_parser (GtkWidgetClass     *klass,
 871                                                      GParamSpec         *pspec,
 872                                                      GtkRcPropertyParser parser);
 873 GParamSpec*  gtk_widget_class_find_style_property   (GtkWidgetClass     *klass,
 874                                                      const gchar        *property_name);
 875 GParamSpec** gtk_widget_class_list_style_properties (GtkWidgetClass     *klass,
 876                                                      guint              *n_properties);
 877 void gtk_widget_style_get_property (GtkWidget        *widget,
 878                                     const gchar    *property_name,
 879                                     GValue           *value);
 880 void gtk_widget_style_get_valist   (GtkWidget        *widget,
 881                                     const gchar    *first_property_name,
 882                                     va_list         var_args);
 883 void gtk_widget_style_get          (GtkWidget        *widget,
 884                                     const gchar    *first_property_name,
 885                                     ...) G_GNUC_NULL_TERMINATED;
 886
 887
 888 /* Set certain default values to be used at widget creation time.
 889  */
 890 void         gtk_widget_set_default_colormap (GdkColormap *colormap);
 891 GtkStyle*    gtk_widget_get_default_style    (void);
 892 #ifndef GDK_MULTIHEAD_SAFE
 893 GdkColormap* gtk_widget_get_default_colormap (void);
 894 GdkVisual*   gtk_widget_get_default_visual   (void);
 895 #endif
 896
 897 /* Functions for setting directionality for widgets
 898  */
 899
 900 void             gtk_widget_set_direction         (GtkWidget        *widget,
 901                                                    GtkTextDirection  dir);
 902 GtkTextDirection gtk_widget_get_direction         (GtkWidget        *widget);
 903
 904 void             gtk_widget_set_default_direction (GtkTextDirection  dir);
 905 GtkTextDirection gtk_widget_get_default_direction (void);
 906
 907 /* Compositing manager functionality */
 908 gboolean gtk_widget_is_composited (GtkWidget *widget);
 909
 910 /* Counterpart to gdk_window_shape_combine_mask.
 911  */
 912 void         gtk_widget_shape_combine_mask (GtkWidget *widget,
 913                                             GdkBitmap *shape_mask,
 914                                             gint       offset_x,
 915                                             gint       offset_y);
 916 void         gtk_widget_input_shape_combine_mask (GtkWidget *widget,
 917                                                   GdkBitmap *shape_mask,
 918                                                   gint       offset_x,
 919                                                   gint       offset_y);
 920
 921 /* internal function */
 922 void         gtk_widget_reset_shapes       (GtkWidget *widget);
 923
 924 /* Compute a widget's path in the form "GtkWindow.MyLabel", and
 925  * return newly alocated strings.
 926  */
 927 void         gtk_widget_path               (GtkWidget *widget,
 928                                             guint     *path_length,
 929                                             gchar    **path,
 930                                             gchar    **path_reversed);
 931 void         gtk_widget_class_path         (GtkWidget *widget,
 932                                             guint     *path_length,
 933                                             gchar    **path,
 934                                             gchar    **path_reversed);
 935
 936 GList* gtk_widget_list_mnemonic_labels  (GtkWidget *widget);
 937 void   gtk_widget_add_mnemonic_label    (GtkWidget *widget,
 938                                          GtkWidget *label);
 939 void   gtk_widget_remove_mnemonic_label (GtkWidget *widget,
 940                                          GtkWidget *label);
 941
 942 void                  gtk_widget_set_tooltip_window    (GtkWidget   *widget,
 943                                                         GtkWindow   *custom_window);
 944 GtkWindow *gtk_widget_get_tooltip_window    (GtkWidget   *widget);
 945 void       gtk_widget_trigger_tooltip_query (GtkWidget   *widget);
 946 void       gtk_widget_set_tooltip_text      (GtkWidget   *widget,
 947                                              const gchar *text);
 948 gchar *    gtk_widget_get_tooltip_text      (GtkWidget   *widget);
 949 void       gtk_widget_set_tooltip_markup    (GtkWidget   *widget,
 950                                              const gchar *markup);
 951 gchar *    gtk_widget_get_tooltip_markup    (GtkWidget   *widget);
 952 void       gtk_widget_set_has_tooltip       (GtkWidget   *widget,
 953                                              gboolean     has_tooltip);
 954 gboolean   gtk_widget_get_has_tooltip       (GtkWidget   *widget);
 955
 956 GType           gtk_requisition_get_type (void) G_GNUC_CONST;
 957 GtkRequisition *gtk_requisition_new      (void) G_GNUC_MALLOC;
 958 GtkRequisition *gtk_requisition_copy     (const GtkRequisition *requisition);
 959 void            gtk_requisition_free     (GtkRequisition       *requisition);
 960
 961 void              _gtk_widget_set_has_default             (GtkWidget    *widget,
 962                                                            gboolean      has_default);
 963 void              _gtk_widget_set_has_grab                (GtkWidget    *widget,
 964                                                            gboolean      has_grab);
 965 void              _gtk_widget_set_is_toplevel             (GtkWidget    *widget,
 966                                                            gboolean      is_toplevel);
 967
 968 void              _gtk_widget_grab_notify                 (GtkWidget    *widget,
 969                                                            gboolean     was_grabbed);
 970
 971 GtkWidgetAuxInfo *_gtk_widget_get_aux_info                (GtkWidget    *widget,
 972                                                            gboolean      create);
 973 void              _gtk_widget_propagate_hierarchy_changed (GtkWidget    *widget,
 974                                                            GtkWidget    *previous_toplevel);
 975 void              _gtk_widget_propagate_screen_changed    (GtkWidget    *widget,
 976                                                            GdkScreen    *previous_screen);
 977 void              _gtk_widget_propagate_composited_changed (GtkWidget    *widget);
 978
 979 void       _gtk_widget_set_device_window   (GtkWidget      *widget,
 980                                             GdkDevice      *device,
 981                                             GdkWindow      *pointer_window);
 982 GdkWindow *_gtk_widget_get_device_window   (GtkWidget      *widget,
 983                                             GdkDevice      *device);
 984 GList *    _gtk_widget_list_devices        (GtkWidget      *widget);
 985
 986 void       _gtk_widget_synthesize_crossing (GtkWidget      *from,
 987                                             GtkWidget      *to,
 988                                             GdkDevice      *device,
 989                                             GdkCrossingMode mode);
 990
 991 GdkColormap* _gtk_widget_peek_colormap (void);
 992
 993 void         _gtk_widget_buildable_finish_accelerator (GtkWidget *widget,
 994                                                        GtkWidget *toplevel,
 995                                                        gpointer   user_data);
 996
 997 G_END_DECLS
 998
 999 #endif /* __GTK_WIDGET_H__ */