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 _GtkWidgetPrivate   GtkWidgetPrivate;
 200 typedef struct _GtkWidgetClass     GtkWidgetClass;
 201 typedef struct _GtkWidgetAuxInfo   GtkWidgetAuxInfo;
 202 typedef struct _GtkWidgetShapeInfo GtkWidgetShapeInfo;
 203 typedef struct _GtkClipboard       GtkClipboard;
 204 typedef struct _GtkTooltip         GtkTooltip;
 205 typedef struct _GtkWindow          GtkWindow;
 206
 207
 208 /**
 209  * GtkAllocation:
 210  * @x: the X position of the widget's area relative to its parents allocation.
 211  * @y: the Y position of the widget's area relative to its parents allocation.
 212  * @width: the width of the widget's allocated area.
 213  * @height: the height of the widget's allocated area.
 214  *
 215  * A <structname>GtkAllocation</structname> of a widget represents region which has been allocated to the
 216  * widget by its parent. It is a subregion of its parents allocation. See
 217  * <xref linkend="size-allocation"/> for more information.
 218  */
 219 typedef         GdkRectangle       GtkAllocation;
 220
 221 /**
 222  * GtkCallback:
 223  * @widget: the widget to operate on
 224  * @data: user-supplied data
 225  *
 226  * The type of the callback functions used for e.g. iterating over
 227  * the children of a container, see gtk_container_foreach().
 228  */
 229 typedef void    (*GtkCallback)     (GtkWidget        *widget,
 230                                     gpointer          data);
 231
 232 /**
 233  * GtkRequisition:
 234  * @width: the widget's desired width
 235  * @height: the widget's desired height
 236  *
 237  * A <structname>GtkRequisition</structname> represents the desired size of a widget. See
 238  * <xref linkend="size-requisition"/> for more information.
 239  */
 240 struct _GtkRequisition
 241 {
 242   gint width;
 243   gint height;
 244 };
 245
 246 /* The widget is the base of the tree for displayable objects.
 247  *  (A displayable object is one which takes up some amount
 248  *  of screen real estate). It provides a common base and interface
 249  *  which actual widgets must adhere to.
 250  */
 251 struct _GtkWidget
 252 {
 253   /* The object structure needs to be the first
 254    *  element in the widget structure in order for
 255    *  the object mechanism to work correctly. This
 256    *  allows a GtkWidget pointer to be cast to a
 257    *  GtkObject pointer.
 258    */
 259   GtkObject object;
 260
 261   /* internally used private flags. */
 262   guint GSEAL (private_flags) : 16;
 263
 264   GtkWidgetPrivate *priv;
 265 };
 266
 267 /**
 268  * GtkWidgetClass:
 269  * @parent_class: The object class structure needs to be the first
 270  *   element in the widget class structure in order for the class mechanism
 271  *   to work correctly. This allows a GtkWidgetClass pointer to be cast to
 272  *   a GtkObjectClass pointer.
 273  * @activate_signal: The signal to emit when a widget of this class is
 274  *   activated, gtk_widget_activate() handles the emission.
 275  *   Implementation of this signal is optional.
 276  * @set_scroll_adjustments_signal: This signal is emitted  when a widget of
 277  *   this class is added to a scrolling aware parent,
 278  *   gtk_widget_set_scroll_adjustments() handles the emission.
 279  *   Implementation of this signal is optional.
 280  * @adjust_size_request: Convert an initial size request from a widget's
 281  *   #GtkSizeRequest virtual method implementations into a size request to
 282  *   be used by parent containers in laying out the widget.
 283  *   adjust_size_request adjusts <emphasis>from</emphasis> a child widget's
 284  *   original request <emphasis>to</emphasis> what a parent container should
 285  *   use for layout. The @for_size argument will be -1 if the request should
 286  *   not be for a particular size in the opposing orientation, i.e. if the
 287  *   request is not height-for-width or width-for-height. If @for_size is
 288  *   greater than -1, it is the proposed allocation in the opposing
 289  *   orientation that we need the request for. Implementations of
 290  *   adjust_size_request should chain up to the default implementation,
 291  *   which applies #GtkWidget's margin properties and imposes any values
 292  *   from gtk_widget_set_size_request(). Chaining up should be last,
 293  *   <emphasis>after</emphasis> your subclass adjusts the request, so
 294  *   #GtkWidget can apply constraints and add the margin properly.
 295  * @adjust_size_allocation: Convert an initial size allocation assigned
 296  *   by a #GtkContainer using gtk_widget_size_allocate(), into an actual
 297  *   size allocation to be used by the widget. adjust_size_allocation
 298  *   adjusts <emphasis>to</emphasis> a child widget's actual allocation
 299  *   <emphasis>from</emphasis> what a parent container computed for the
 300  *   child. The adjusted allocation must be entirely within the original
 301  *   allocation. In any custom implementation, chain up to the default
 302  *   #GtkWidget implementation of this method, which applies the margin
 303  *   and alignment properties of #GtkWidget. Chain up
 304  *   <emphasis>before</emphasis> performing your own adjustments so your
 305  *   own adjustments remove more allocation after the #GtkWidget base
 306  *   class has already removed margin and alignment.
 307  */
 308 struct _GtkWidgetClass
 309 {
 310   GtkObjectClass parent_class;
 311
 312   /*< public >*/
 313
 314   guint activate_signal;
 315
 316   guint set_scroll_adjustments_signal;
 317
 318   /*< private >*/
 319
 320   /* seldomly overidden */
 321   void (*dispatch_child_properties_changed) (GtkWidget   *widget,
 322                                              guint        n_pspecs,
 323                                              GParamSpec **pspecs);
 324
 325   /* basics */
 326   void (* show)                (GtkWidget        *widget);
 327   void (* show_all)            (GtkWidget        *widget);
 328   void (* hide)                (GtkWidget        *widget);
 329   void (* hide_all)            (GtkWidget        *widget);
 330   void (* map)                 (GtkWidget        *widget);
 331   void (* unmap)               (GtkWidget        *widget);
 332   void (* realize)             (GtkWidget        *widget);
 333   void (* unrealize)           (GtkWidget        *widget);
 334   void (* size_request)        (GtkWidget        *widget,
 335                                 GtkRequisition   *requisition);
 336   void (* size_allocate)       (GtkWidget        *widget,
 337                                 GtkAllocation    *allocation);
 338   void (* state_changed)       (GtkWidget        *widget,
 339                                 GtkStateType      previous_state);
 340   void (* parent_set)          (GtkWidget        *widget,
 341                                 GtkWidget        *previous_parent);
 342   void (* hierarchy_changed)   (GtkWidget        *widget,
 343                                 GtkWidget        *previous_toplevel);
 344   void (* style_set)           (GtkWidget        *widget,
 345                                 GtkStyle         *previous_style);
 346   void (* direction_changed)   (GtkWidget        *widget,
 347                                 GtkTextDirection  previous_direction);
 348   void (* grab_notify)         (GtkWidget        *widget,
 349                                 gboolean          was_grabbed);
 350   void (* child_notify)        (GtkWidget        *widget,
 351                                 GParamSpec       *pspec);
 352
 353   /* Mnemonics */
 354   gboolean (* mnemonic_activate) (GtkWidget    *widget,
 355                                   gboolean      group_cycling);
 356
 357   /* explicit focus */
 358   void     (* grab_focus)      (GtkWidget        *widget);
 359   gboolean (* focus)           (GtkWidget        *widget,
 360                                 GtkDirectionType  direction);
 361
 362   /* events */
 363   gboolean (* event)                    (GtkWidget           *widget,
 364                                          GdkEvent            *event);
 365   gboolean (* button_press_event)       (GtkWidget           *widget,
 366                                          GdkEventButton      *event);
 367   gboolean (* button_release_event)     (GtkWidget           *widget,
 368                                          GdkEventButton      *event);
 369   gboolean (* scroll_event)             (GtkWidget           *widget,
 370                                          GdkEventScroll      *event);
 371   gboolean (* motion_notify_event)      (GtkWidget           *widget,
 372                                          GdkEventMotion      *event);
 373   gboolean (* delete_event)             (GtkWidget           *widget,
 374                                          GdkEventAny         *event);
 375   gboolean (* destroy_event)            (GtkWidget           *widget,
 376                                          GdkEventAny         *event);
 377   gboolean (* expose_event)             (GtkWidget           *widget,
 378                                          GdkEventExpose      *event);
 379   gboolean (* key_press_event)          (GtkWidget           *widget,
 380                                          GdkEventKey         *event);
 381   gboolean (* key_release_event)        (GtkWidget           *widget,
 382                                          GdkEventKey         *event);
 383   gboolean (* enter_notify_event)       (GtkWidget           *widget,
 384                                          GdkEventCrossing    *event);
 385   gboolean (* leave_notify_event)       (GtkWidget           *widget,
 386                                          GdkEventCrossing    *event);
 387   gboolean (* configure_event)          (GtkWidget           *widget,
 388                                          GdkEventConfigure   *event);
 389   gboolean (* focus_in_event)           (GtkWidget           *widget,
 390                                          GdkEventFocus       *event);
 391   gboolean (* focus_out_event)          (GtkWidget           *widget,
 392                                          GdkEventFocus       *event);
 393   gboolean (* map_event)                (GtkWidget           *widget,
 394                                          GdkEventAny         *event);
 395   gboolean (* unmap_event)              (GtkWidget           *widget,
 396                                          GdkEventAny         *event);
 397   gboolean (* property_notify_event)    (GtkWidget           *widget,
 398                                          GdkEventProperty    *event);
 399   gboolean (* selection_clear_event)    (GtkWidget           *widget,
 400                                          GdkEventSelection   *event);
 401   gboolean (* selection_request_event)  (GtkWidget           *widget,
 402                                          GdkEventSelection   *event);
 403   gboolean (* selection_notify_event)   (GtkWidget           *widget,
 404                                          GdkEventSelection   *event);
 405   gboolean (* proximity_in_event)       (GtkWidget           *widget,
 406                                          GdkEventProximity   *event);
 407   gboolean (* proximity_out_event)      (GtkWidget           *widget,
 408                                          GdkEventProximity   *event);
 409   gboolean (* visibility_notify_event)  (GtkWidget           *widget,
 410                                          GdkEventVisibility  *event);
 411   gboolean (* client_event)             (GtkWidget           *widget,
 412                                          GdkEventClient      *event);
 413   gboolean (* no_expose_event)          (GtkWidget           *widget,
 414                                          GdkEventAny         *event);
 415   gboolean (* window_state_event)       (GtkWidget           *widget,
 416                                          GdkEventWindowState *event);
 417
 418   /* selection */
 419   void (* selection_get)           (GtkWidget          *widget,
 420                                     GtkSelectionData   *selection_data,
 421                                     guint               info,
 422                                     guint               time_);
 423   void (* selection_received)      (GtkWidget          *widget,
 424                                     GtkSelectionData   *selection_data,
 425                                     guint               time_);
 426
 427   /* Source side drag signals */
 428   void (* drag_begin)              (GtkWidget          *widget,
 429                                     GdkDragContext     *context);
 430   void (* drag_end)                (GtkWidget          *widget,
 431                                     GdkDragContext     *context);
 432   void (* drag_data_get)           (GtkWidget          *widget,
 433                                     GdkDragContext     *context,
 434                                     GtkSelectionData   *selection_data,
 435                                     guint               info,
 436                                     guint               time_);
 437   void (* drag_data_delete)        (GtkWidget          *widget,
 438                                     GdkDragContext     *context);
 439
 440   /* Target side drag signals */
 441   void (* drag_leave)              (GtkWidget          *widget,
 442                                     GdkDragContext     *context,
 443                                     guint               time_);
 444   gboolean (* drag_motion)         (GtkWidget          *widget,
 445                                     GdkDragContext     *context,
 446                                     gint                x,
 447                                     gint                y,
 448                                     guint               time_);
 449   gboolean (* drag_drop)           (GtkWidget          *widget,
 450                                     GdkDragContext     *context,
 451                                     gint                x,
 452                                     gint                y,
 453                                     guint               time_);
 454   void (* drag_data_received)      (GtkWidget          *widget,
 455                                     GdkDragContext     *context,
 456                                     gint                x,
 457                                     gint                y,
 458                                     GtkSelectionData   *selection_data,
 459                                     guint               info,
 460                                     guint               time_);
 461
 462   /* Signals used only for keybindings */
 463   gboolean (* popup_menu)          (GtkWidget          *widget);
 464
 465   /* If a widget has multiple tooltips/whatsthis, it should show the
 466    * one for the current focus location, or if that doesn't make
 467    * sense, should cycle through them showing each tip alongside
 468    * whatever piece of the widget it applies to.
 469    */
 470   gboolean (* show_help)           (GtkWidget          *widget,
 471                                     GtkWidgetHelpType   help_type);
 472
 473   /* accessibility support
 474    */
 475   AtkObject*   (*get_accessible)     (GtkWidget *widget);
 476
 477   void         (*screen_changed)     (GtkWidget *widget,
 478                                       GdkScreen *previous_screen);
 479   gboolean     (*can_activate_accel) (GtkWidget *widget,
 480                                       guint      signal_id);
 481
 482   /* Sent when a grab is broken. */
 483   gboolean (*grab_broken_event) (GtkWidget           *widget,
 484                                  GdkEventGrabBroken  *event);
 485
 486   void         (* composited_changed) (GtkWidget *widget);
 487
 488   gboolean     (* query_tooltip)      (GtkWidget  *widget,
 489                                        gint        x,
 490                                        gint        y,
 491                                        gboolean    keyboard_tooltip,
 492                                        GtkTooltip *tooltip);
 493
 494   /*< public >*/
 495
 496   void         (* adjust_size_request)    (GtkWidget         *widget,
 497                                            GtkOrientation     orientation,
 498                                            gint               for_size,
 499                                            gint              *minimum_size,
 500                                            gint              *natural_size);
 501   void         (* adjust_size_allocation) (GtkWidget         *widget,
 502                                            GtkAllocation     *allocation);
 503
 504   /*< private >*/
 505
 506   /* Signals without a C default handler class slot:
 507    * gboolean   (*damage_event) (GtkWidget      *widget,
 508    *                             GdkEventExpose *event);
 509    */
 510
 511   /* Padding for future expansion */
 512   void (*_gtk_reserved1) (void);
 513   void (*_gtk_reserved2) (void);
 514   void (*_gtk_reserved3) (void);
 515   void (*_gtk_reserved4) (void);
 516   void (*_gtk_reserved5) (void);
 517   void (*_gtk_reserved6) (void);
 518   void (*_gtk_reserved7) (void);
 519   void (*_gtk_reserved8) (void);
 520 };
 521
 522 struct _GtkWidgetAuxInfo
 523 {
 524   gint width;
 525   gint height;
 526
 527   guint   halign : 4;
 528   guint   valign : 4;
 529
 530   GtkBorder margin;
 531 };
 532
 533 struct _GtkWidgetShapeInfo
 534 {
 535   gint16     offset_x;
 536   gint16     offset_y;
 537   GdkBitmap *shape_mask;
 538 };
 539
 540 GType      gtk_widget_get_type            (void) G_GNUC_CONST;
 541 GtkWidget* gtk_widget_new                 (GType                type,
 542                                            const gchar         *first_property_name,
 543                                            ...);
 544 void       gtk_widget_destroy             (GtkWidget           *widget);
 545 void       gtk_widget_destroyed           (GtkWidget           *widget,
 546                                            GtkWidget          **widget_pointer);
 547 void       gtk_widget_unparent            (GtkWidget           *widget);
 548 void       gtk_widget_show                (GtkWidget           *widget);
 549 void       gtk_widget_show_now            (GtkWidget           *widget);
 550 void       gtk_widget_hide                (GtkWidget           *widget);
 551 void       gtk_widget_show_all            (GtkWidget           *widget);
 552 void       gtk_widget_hide_all            (GtkWidget           *widget);
 553 void       gtk_widget_set_no_show_all     (GtkWidget           *widget,
 554                                            gboolean             no_show_all);
 555 gboolean   gtk_widget_get_no_show_all     (GtkWidget           *widget);
 556 void       gtk_widget_map                 (GtkWidget           *widget);
 557 void       gtk_widget_unmap               (GtkWidget           *widget);
 558 void       gtk_widget_realize             (GtkWidget           *widget);
 559 void       gtk_widget_unrealize           (GtkWidget           *widget);
 560
 561 /* Queuing draws */
 562 void       gtk_widget_queue_draw          (GtkWidget           *widget);
 563 void       gtk_widget_queue_draw_area     (GtkWidget           *widget,
 564                                            gint                 x,
 565                                            gint                 y,
 566                                            gint                 width,
 567                                            gint                 height);
 568 void       gtk_widget_queue_resize        (GtkWidget           *widget);
 569 void       gtk_widget_queue_resize_no_redraw (GtkWidget *widget);
 570 #ifndef GTK_DISABLE_DEPRECATED
 571 void       gtk_widget_size_request        (GtkWidget           *widget,
 572                                            GtkRequisition      *requisition);
 573 #endif
 574 void       gtk_widget_size_allocate       (GtkWidget           *widget,
 575                                            GtkAllocation       *allocation);
 576 #ifndef GTK_DISABLE_DEPRECATED
 577 void       gtk_widget_get_child_requisition (GtkWidget         *widget,
 578                                              GtkRequisition    *requisition);
 579 #endif
 580 void       gtk_widget_add_accelerator     (GtkWidget           *widget,
 581                                            const gchar         *accel_signal,
 582                                            GtkAccelGroup       *accel_group,
 583                                            guint                accel_key,
 584                                            GdkModifierType      accel_mods,
 585                                            GtkAccelFlags        accel_flags);
 586 gboolean   gtk_widget_remove_accelerator  (GtkWidget           *widget,
 587                                            GtkAccelGroup       *accel_group,
 588                                            guint                accel_key,
 589                                            GdkModifierType      accel_mods);
 590 void       gtk_widget_set_accel_path      (GtkWidget           *widget,
 591                                            const gchar         *accel_path,
 592                                            GtkAccelGroup       *accel_group);
 593 const gchar* _gtk_widget_get_accel_path   (GtkWidget           *widget,
 594                                            gboolean            *locked);
 595 GList*     gtk_widget_list_accel_closures (GtkWidget           *widget);
 596 gboolean   gtk_widget_can_activate_accel  (GtkWidget           *widget,
 597                                            guint                signal_id);
 598 gboolean   gtk_widget_mnemonic_activate   (GtkWidget           *widget,
 599                                            gboolean             group_cycling);
 600 gboolean   gtk_widget_event               (GtkWidget           *widget,
 601                                            GdkEvent            *event);
 602 gint       gtk_widget_send_expose         (GtkWidget           *widget,
 603                                            GdkEvent            *event);
 604 gboolean   gtk_widget_send_focus_change   (GtkWidget           *widget,
 605                                            GdkEvent            *event);
 606
 607 gboolean   gtk_widget_activate               (GtkWidget        *widget);
 608 gboolean   gtk_widget_set_scroll_adjustments (GtkWidget        *widget,
 609                                               GtkAdjustment    *hadjustment,
 610                                               GtkAdjustment    *vadjustment);
 611
 612 void       gtk_widget_reparent            (GtkWidget           *widget,
 613                                            GtkWidget           *new_parent);
 614 gboolean   gtk_widget_intersect           (GtkWidget           *widget,
 615                                            const GdkRectangle  *area,
 616                                            GdkRectangle        *intersection);
 617 cairo_region_t *gtk_widget_region_intersect       (GtkWidget           *widget,
 618                                            const cairo_region_t     *region);
 619
 620 void    gtk_widget_freeze_child_notify    (GtkWidget           *widget);
 621 void    gtk_widget_child_notify           (GtkWidget           *widget,
 622                                            const gchar         *child_property);
 623 void    gtk_widget_thaw_child_notify      (GtkWidget           *widget);
 624
 625 void       gtk_widget_set_can_focus       (GtkWidget           *widget,
 626                                            gboolean             can_focus);
 627 gboolean   gtk_widget_get_can_focus       (GtkWidget           *widget);
 628 gboolean   gtk_widget_has_focus           (GtkWidget           *widget);
 629 gboolean   gtk_widget_is_focus            (GtkWidget           *widget);
 630 void       gtk_widget_grab_focus          (GtkWidget           *widget);
 631
 632 void       gtk_widget_set_can_default     (GtkWidget           *widget,
 633                                            gboolean             can_default);
 634 gboolean   gtk_widget_get_can_default     (GtkWidget           *widget);
 635 gboolean   gtk_widget_has_default         (GtkWidget           *widget);
 636 void       gtk_widget_grab_default        (GtkWidget           *widget);
 637
 638 void      gtk_widget_set_receives_default (GtkWidget           *widget,
 639                                            gboolean             receives_default);
 640 gboolean  gtk_widget_get_receives_default (GtkWidget           *widget);
 641
 642 gboolean   gtk_widget_has_grab            (GtkWidget           *widget);
 643
 644 gboolean   gtk_widget_device_is_shadowed  (GtkWidget           *widget,
 645                                            GdkDevice           *device);
 646
 647
 648 void                  gtk_widget_set_name               (GtkWidget    *widget,
 649                                                          const gchar  *name);
 650 G_CONST_RETURN gchar* gtk_widget_get_name               (GtkWidget    *widget);
 651
 652 void                  gtk_widget_set_state              (GtkWidget    *widget,
 653                                                          GtkStateType  state);
 654 GtkStateType          gtk_widget_get_state              (GtkWidget    *widget);
 655
 656 void                  gtk_widget_set_sensitive          (GtkWidget    *widget,
 657                                                          gboolean      sensitive);
 658 gboolean              gtk_widget_get_sensitive          (GtkWidget    *widget);
 659 gboolean              gtk_widget_is_sensitive           (GtkWidget    *widget);
 660
 661 void                  gtk_widget_set_visible            (GtkWidget    *widget,
 662                                                          gboolean      visible);
 663 gboolean              gtk_widget_get_visible            (GtkWidget    *widget);
 664
 665 void                  gtk_widget_set_has_window         (GtkWidget    *widget,
 666                                                          gboolean      has_window);
 667 gboolean              gtk_widget_get_has_window         (GtkWidget    *widget);
 668
 669 gboolean              gtk_widget_is_toplevel            (GtkWidget    *widget);
 670 gboolean              gtk_widget_is_drawable            (GtkWidget    *widget);
 671 void                  gtk_widget_set_realized           (GtkWidget    *widget,
 672                                                          gboolean      realized);
 673 gboolean              gtk_widget_get_realized           (GtkWidget    *widget);
 674 void                  gtk_widget_set_mapped             (GtkWidget    *widget,
 675                                                          gboolean      mapped);
 676 gboolean              gtk_widget_get_mapped             (GtkWidget    *widget);
 677
 678 void                  gtk_widget_set_app_paintable      (GtkWidget    *widget,
 679                                                          gboolean      app_paintable);
 680 gboolean              gtk_widget_get_app_paintable      (GtkWidget    *widget);
 681
 682 void                  gtk_widget_set_double_buffered    (GtkWidget    *widget,
 683                                                          gboolean      double_buffered);
 684 gboolean              gtk_widget_get_double_buffered    (GtkWidget    *widget);
 685
 686 void                  gtk_widget_set_redraw_on_allocate (GtkWidget    *widget,
 687                                                          gboolean      redraw_on_allocate);
 688
 689 void                  gtk_widget_set_parent             (GtkWidget    *widget,
 690                                                          GtkWidget    *parent);
 691 GtkWidget           * gtk_widget_get_parent             (GtkWidget    *widget);
 692
 693 void                  gtk_widget_set_parent_window      (GtkWidget    *widget,
 694                                                          GdkWindow    *parent_window);
 695 GdkWindow           * gtk_widget_get_parent_window      (GtkWidget    *widget);
 696
 697 void                  gtk_widget_set_child_visible      (GtkWidget    *widget,
 698                                                          gboolean      is_visible);
 699 gboolean              gtk_widget_get_child_visible      (GtkWidget    *widget);
 700
 701 void                  gtk_widget_set_window             (GtkWidget    *widget,
 702                                                          GdkWindow    *window);
 703 GdkWindow           * gtk_widget_get_window             (GtkWidget    *widget);
 704
 705 void                  gtk_widget_get_allocation         (GtkWidget     *widget,
 706                                                          GtkAllocation *allocation);
 707 void                  gtk_widget_set_allocation         (GtkWidget     *widget,
 708                                                          const GtkAllocation *allocation);
 709
 710 void                  gtk_widget_get_requisition        (GtkWidget     *widget,
 711                                                          GtkRequisition *requisition);
 712
 713 gboolean   gtk_widget_child_focus         (GtkWidget           *widget,
 714                                            GtkDirectionType     direction);
 715 gboolean   gtk_widget_keynav_failed       (GtkWidget           *widget,
 716                                            GtkDirectionType     direction);
 717 void       gtk_widget_error_bell          (GtkWidget           *widget);
 718
 719 void       gtk_widget_set_size_request    (GtkWidget           *widget,
 720                                            gint                 width,
 721                                            gint                 height);
 722 void       gtk_widget_get_size_request    (GtkWidget           *widget,
 723                                            gint                *width,
 724                                            gint                *height);
 725 void       gtk_widget_set_events          (GtkWidget           *widget,
 726                                            gint                 events);
 727 void       gtk_widget_add_events          (GtkWidget           *widget,
 728                                            gint                 events);
 729 void       gtk_widget_set_device_events   (GtkWidget           *widget,
 730                                            GdkDevice           *device,
 731                                            GdkEventMask         events);
 732 void       gtk_widget_add_device_events   (GtkWidget           *widget,
 733                                            GdkDevice           *device,
 734                                            GdkEventMask         events);
 735 void       gtk_widget_set_extension_events (GtkWidget           *widget,
 736                                             GdkExtensionMode    mode);
 737
 738 GdkExtensionMode gtk_widget_get_extension_events (GtkWidget     *widget);
 739 GtkWidget*   gtk_widget_get_toplevel    (GtkWidget      *widget);
 740 GtkWidget*   gtk_widget_get_ancestor    (GtkWidget      *widget,
 741                                          GType           widget_type);
 742 GdkColormap* gtk_widget_get_colormap    (GtkWidget      *widget);
 743 GdkVisual*   gtk_widget_get_visual      (GtkWidget      *widget);
 744
 745 GdkScreen *   gtk_widget_get_screen      (GtkWidget *widget);
 746 gboolean      gtk_widget_has_screen      (GtkWidget *widget);
 747 GdkDisplay *  gtk_widget_get_display     (GtkWidget *widget);
 748 GdkWindow *   gtk_widget_get_root_window (GtkWidget *widget);
 749 GtkSettings*  gtk_widget_get_settings    (GtkWidget *widget);
 750 GtkClipboard *gtk_widget_get_clipboard   (GtkWidget *widget,
 751                                           GdkAtom    selection);
 752 GdkPixmap *   gtk_widget_get_snapshot    (GtkWidget    *widget,
 753                                           GdkRectangle *clip_rect);
 754
 755 /* Multidevice support */
 756 gboolean         gtk_widget_get_support_multidevice (GtkWidget      *widget);
 757 void             gtk_widget_set_support_multidevice (GtkWidget      *widget,
 758                                                      gboolean        support_multidevice);
 759
 760 /* Accessibility support */
 761 AtkObject*       gtk_widget_get_accessible               (GtkWidget          *widget);
 762
 763
 764 /* Margin and alignment */
 765 GtkAlign gtk_widget_get_halign        (GtkWidget *widget);
 766 void     gtk_widget_set_halign        (GtkWidget *widget,
 767                                        GtkAlign   align);
 768 GtkAlign gtk_widget_get_valign        (GtkWidget *widget);
 769 void     gtk_widget_set_valign        (GtkWidget *widget,
 770                                        GtkAlign   align);
 771 gint     gtk_widget_get_margin_left   (GtkWidget *widget);
 772 void     gtk_widget_set_margin_left   (GtkWidget *widget,
 773                                        gint       margin);
 774 gint     gtk_widget_get_margin_right  (GtkWidget *widget);
 775 void     gtk_widget_set_margin_right  (GtkWidget *widget,
 776                                        gint       margin);
 777 gint     gtk_widget_get_margin_top    (GtkWidget *widget);
 778 void     gtk_widget_set_margin_top    (GtkWidget *widget,
 779                                        gint       margin);
 780 gint     gtk_widget_get_margin_bottom (GtkWidget *widget);
 781 void     gtk_widget_set_margin_bottom (GtkWidget *widget,
 782                                        gint       margin);
 783
 784
 785 /* The following functions must not be called on an already
 786  * realized widget. Because it is possible that somebody
 787  * can call get_colormap() or get_visual() and save the
 788  * result, these functions are probably only safe to
 789  * call in a widget's init() function.
 790  */
 791 void         gtk_widget_set_colormap    (GtkWidget      *widget,
 792                                          GdkColormap    *colormap);
 793
 794 gint         gtk_widget_get_events      (GtkWidget      *widget);
 795 GdkEventMask gtk_widget_get_device_events (GtkWidget    *widget,
 796                                            GdkDevice    *device);
 797 void         gtk_widget_get_pointer     (GtkWidget      *widget,
 798                                          gint           *x,
 799                                          gint           *y);
 800
 801 gboolean     gtk_widget_is_ancestor     (GtkWidget      *widget,
 802                                          GtkWidget      *ancestor);
 803
 804 gboolean     gtk_widget_translate_coordinates (GtkWidget  *src_widget,
 805                                                GtkWidget  *dest_widget,
 806                                                gint        src_x,
 807                                                gint        src_y,
 808                                                gint       *dest_x,
 809                                                gint       *dest_y);
 810
 811 /* Hide widget and return TRUE.
 812  */
 813 gboolean     gtk_widget_hide_on_delete  (GtkWidget      *widget);
 814
 815 /* Widget styles.
 816  */
 817 void        gtk_widget_style_attach       (GtkWidget            *widget);
 818
 819 gboolean    gtk_widget_has_rc_style       (GtkWidget            *widget);
 820 void        gtk_widget_set_style          (GtkWidget            *widget,
 821                                            GtkStyle             *style);
 822 void        gtk_widget_ensure_style       (GtkWidget            *widget);
 823 GtkStyle *  gtk_widget_get_style          (GtkWidget            *widget);
 824
 825 void        gtk_widget_modify_style       (GtkWidget            *widget,
 826                                            GtkRcStyle           *style);
 827 GtkRcStyle *gtk_widget_get_modifier_style (GtkWidget            *widget);
 828 void        gtk_widget_modify_fg          (GtkWidget            *widget,
 829                                            GtkStateType          state,
 830                                            const GdkColor       *color);
 831 void        gtk_widget_modify_bg          (GtkWidget            *widget,
 832                                            GtkStateType          state,
 833                                            const GdkColor       *color);
 834 void        gtk_widget_modify_text        (GtkWidget            *widget,
 835                                            GtkStateType          state,
 836                                            const GdkColor       *color);
 837 void        gtk_widget_modify_base        (GtkWidget            *widget,
 838                                            GtkStateType          state,
 839                                            const GdkColor       *color);
 840 void        gtk_widget_modify_cursor      (GtkWidget            *widget,
 841                                            const GdkColor       *primary,
 842                                            const GdkColor       *secondary);
 843 void        gtk_widget_modify_font        (GtkWidget            *widget,
 844                                            PangoFontDescription *font_desc);
 845 void        gtk_widget_modify_symbolic_color (GtkWidget         *widget,
 846                                            const gchar          *name,
 847                                            const GdkColor       *color);
 848
 849 PangoContext *gtk_widget_create_pango_context (GtkWidget   *widget);
 850 PangoContext *gtk_widget_get_pango_context    (GtkWidget   *widget);
 851 PangoLayout  *gtk_widget_create_pango_layout  (GtkWidget   *widget,
 852                                                const gchar *text);
 853
 854 GdkPixbuf    *gtk_widget_render_icon          (GtkWidget   *widget,
 855                                                const gchar *stock_id,
 856                                                GtkIconSize  size,
 857                                                const gchar *detail);
 858
 859 /* handle composite names for GTK_COMPOSITE_CHILD widgets,
 860  * the returned name is newly allocated.
 861  */
 862 void   gtk_widget_set_composite_name    (GtkWidget      *widget,
 863                                          const gchar    *name);
 864 gchar* gtk_widget_get_composite_name    (GtkWidget      *widget);
 865
 866 /* Descend recursively and set rc-style on all widgets without user styles */
 867 void       gtk_widget_reset_rc_styles   (GtkWidget      *widget);
 868
 869 /* Push/pop pairs, to change default values upon a widget's creation.
 870  * This will override the values that got set by the
 871  * gtk_widget_set_default_* () functions.
 872  */
 873 void         gtk_widget_push_colormap        (GdkColormap *cmap);
 874 void         gtk_widget_push_composite_child (void);
 875 void         gtk_widget_pop_composite_child  (void);
 876 void         gtk_widget_pop_colormap         (void);
 877
 878 /* widget style properties
 879  */
 880 void gtk_widget_class_install_style_property        (GtkWidgetClass     *klass,
 881                                                      GParamSpec         *pspec);
 882 void gtk_widget_class_install_style_property_parser (GtkWidgetClass     *klass,
 883                                                      GParamSpec         *pspec,
 884                                                      GtkRcPropertyParser parser);
 885 GParamSpec*  gtk_widget_class_find_style_property   (GtkWidgetClass     *klass,
 886                                                      const gchar        *property_name);
 887 GParamSpec** gtk_widget_class_list_style_properties (GtkWidgetClass     *klass,
 888                                                      guint              *n_properties);
 889 void gtk_widget_style_get_property (GtkWidget        *widget,
 890                                     const gchar    *property_name,
 891                                     GValue           *value);
 892 void gtk_widget_style_get_valist   (GtkWidget        *widget,
 893                                     const gchar    *first_property_name,
 894                                     va_list         var_args);
 895 void gtk_widget_style_get          (GtkWidget        *widget,
 896                                     const gchar    *first_property_name,
 897                                     ...) G_GNUC_NULL_TERMINATED;
 898
 899
 900 /* Set certain default values to be used at widget creation time.
 901  */
 902 void         gtk_widget_set_default_colormap (GdkColormap *colormap);
 903 GtkStyle*    gtk_widget_get_default_style    (void);
 904 #ifndef GDK_MULTIHEAD_SAFE
 905 GdkColormap* gtk_widget_get_default_colormap (void);
 906 GdkVisual*   gtk_widget_get_default_visual   (void);
 907 #endif
 908
 909 /* Functions for setting directionality for widgets
 910  */
 911
 912 void             gtk_widget_set_direction         (GtkWidget        *widget,
 913                                                    GtkTextDirection  dir);
 914 GtkTextDirection gtk_widget_get_direction         (GtkWidget        *widget);
 915
 916 void             gtk_widget_set_default_direction (GtkTextDirection  dir);
 917 GtkTextDirection gtk_widget_get_default_direction (void);
 918
 919 /* Compositing manager functionality */
 920 gboolean gtk_widget_is_composited (GtkWidget *widget);
 921
 922 /* Counterpart to gdk_window_shape_combine_mask.
 923  */
 924 void         gtk_widget_shape_combine_mask (GtkWidget *widget,
 925                                             GdkBitmap *shape_mask,
 926                                             gint       offset_x,
 927                                             gint       offset_y);
 928 void         gtk_widget_input_shape_combine_mask (GtkWidget *widget,
 929                                                   GdkBitmap *shape_mask,
 930                                                   gint       offset_x,
 931                                                   gint       offset_y);
 932
 933 /* internal function */
 934 void         gtk_widget_reset_shapes       (GtkWidget *widget);
 935
 936 /* Compute a widget's path in the form "GtkWindow.MyLabel", and
 937  * return newly alocated strings.
 938  */
 939 void         gtk_widget_path               (GtkWidget *widget,
 940                                             guint     *path_length,
 941                                             gchar    **path,
 942                                             gchar    **path_reversed);
 943 void         gtk_widget_class_path         (GtkWidget *widget,
 944                                             guint     *path_length,
 945                                             gchar    **path,
 946                                             gchar    **path_reversed);
 947
 948 GList* gtk_widget_list_mnemonic_labels  (GtkWidget *widget);
 949 void   gtk_widget_add_mnemonic_label    (GtkWidget *widget,
 950                                          GtkWidget *label);
 951 void   gtk_widget_remove_mnemonic_label (GtkWidget *widget,
 952                                          GtkWidget *label);
 953
 954 void                  gtk_widget_set_tooltip_window    (GtkWidget   *widget,
 955                                                         GtkWindow   *custom_window);
 956 GtkWindow *gtk_widget_get_tooltip_window    (GtkWidget   *widget);
 957 void       gtk_widget_trigger_tooltip_query (GtkWidget   *widget);
 958 void       gtk_widget_set_tooltip_text      (GtkWidget   *widget,
 959                                              const gchar *text);
 960 gchar *    gtk_widget_get_tooltip_text      (GtkWidget   *widget);
 961 void       gtk_widget_set_tooltip_markup    (GtkWidget   *widget,
 962                                              const gchar *markup);
 963 gchar *    gtk_widget_get_tooltip_markup    (GtkWidget   *widget);
 964 void       gtk_widget_set_has_tooltip       (GtkWidget   *widget,
 965                                              gboolean     has_tooltip);
 966 gboolean   gtk_widget_get_has_tooltip       (GtkWidget   *widget);
 967
 968 GType           gtk_requisition_get_type (void) G_GNUC_CONST;
 969 GtkRequisition *gtk_requisition_new      (void) G_GNUC_MALLOC;
 970 GtkRequisition *gtk_requisition_copy     (const GtkRequisition *requisition);
 971 void            gtk_requisition_free     (GtkRequisition       *requisition);
 972
 973 void              _gtk_widget_set_has_default             (GtkWidget    *widget,
 974                                                            gboolean      has_default);
 975 void              _gtk_widget_set_has_grab                (GtkWidget    *widget,
 976                                                            gboolean      has_grab);
 977 void              _gtk_widget_set_is_toplevel             (GtkWidget    *widget,
 978                                                            gboolean      is_toplevel);
 979
 980 void              _gtk_widget_grab_notify                 (GtkWidget    *widget,
 981                                                            gboolean     was_grabbed);
 982
 983 GtkWidgetAuxInfo *_gtk_widget_get_aux_info                (GtkWidget    *widget,
 984                                                            gboolean      create);
 985 void              _gtk_widget_propagate_hierarchy_changed (GtkWidget    *widget,
 986                                                            GtkWidget    *previous_toplevel);
 987 void              _gtk_widget_propagate_screen_changed    (GtkWidget    *widget,
 988                                                            GdkScreen    *previous_screen);
 989 void              _gtk_widget_propagate_composited_changed (GtkWidget    *widget);
 990
 991 void       _gtk_widget_set_device_window   (GtkWidget      *widget,
 992                                             GdkDevice      *device,
 993                                             GdkWindow      *pointer_window);
 994 GdkWindow *_gtk_widget_get_device_window   (GtkWidget      *widget,
 995                                             GdkDevice      *device);
 996 GList *    _gtk_widget_list_devices        (GtkWidget      *widget);
 997
 998 void       _gtk_widget_synthesize_crossing (GtkWidget      *from,
 999                                             GtkWidget      *to,
1000                                             GdkDevice      *device,
1001                                             GdkCrossingMode mode);
1002
1003 GdkColormap* _gtk_widget_peek_colormap (void);
1004
1005 gpointer     _gtk_widget_peek_request_cache (GtkWidget *widget);
1006
1007 void         _gtk_widget_buildable_finish_accelerator (GtkWidget *widget,
1008                                                        GtkWidget *toplevel,
1009                                                        gpointer   user_data);
1010
1011 G_END_DECLS
1012
1013 #endif /* __GTK_WIDGET_H__ */