src/gtk1/win_gtk.c

   1 /* ///////////////////////////////////////////////////////////////////////////
   2 // Name:        win_gtk.c
   3 // Purpose:     native GTK+ widget for wxWindows
   4 // Author:      Robert Roebling
   5 // Id:          $Id$
   6 // Copyright:   (c) 1998 Robert Roebling
   7 // Licence:     wxWindows licence
   8 /////////////////////////////////////////////////////////////////////////// */
   9
  10 #include "wx/gtk/win_gtk.h"
  11 #include "gtk/gtksignal.h"
  12 #include "gtk/gtknotebook.h"
  13
  14 #ifdef __cplusplus
  15 extern "C" {
  16 #endif /* __cplusplus */
  17
  18 static void gtk_myfixed_class_init    (GtkMyFixedClass    *klass);
  19 static void gtk_myfixed_init          (GtkMyFixed         *myfixed);
  20 static void gtk_myfixed_map           (GtkWidget        *widget);
  21 #if (GTK_MINOR_VERSION == 0)
  22 static void gtk_myfixed_unmap         (GtkWidget        *widget);
  23 #endif
  24 static void gtk_myfixed_realize       (GtkWidget        *widget);
  25 static void gtk_myfixed_size_request  (GtkWidget        *widget,
  26                                      GtkRequisition   *requisition);
  27 static void gtk_myfixed_size_allocate (GtkWidget        *widget,
  28                                      GtkAllocation    *allocation);
  29 static void gtk_myfixed_paint         (GtkWidget        *widget,
  30                                      GdkRectangle     *area);
  31 static void gtk_myfixed_draw          (GtkWidget        *widget,
  32                                      GdkRectangle     *area);
  33 static gint gtk_myfixed_expose        (GtkWidget        *widget,
  34                                      GdkEventExpose   *event);
  35 static void gtk_myfixed_add           (GtkContainer     *container,
  36                                      GtkWidget        *widget);
  37 static void gtk_myfixed_remove        (GtkContainer     *container,
  38                                      GtkWidget        *widget);
  39 static void gtk_myfixed_foreach       (GtkContainer     *container,
  40 #if (GTK_MINOR_VERSION > 0)
  41                                      gboolean         include_internals,
  42 #endif
  43                                      GtkCallback      callback,
  44                                      gpointer         callback_data);
  45 #if (GTK_MINOR_VERSION > 0)
  46 static GtkType gtk_myfixed_child_type (GtkContainer     *container);
  47 #endif
  48
  49 #if (GTK_MINOR_VERSION > 0)
  50 static void  gtk_myfixed_scroll_set_adjustments    (GtkMyFixed   *myfixed,
  51                                                GtkAdjustment *hadj,
  52                                                GtkAdjustment *vadj);
  53 #endif
  54
  55
  56
  57 static GtkContainerClass *parent_class = NULL;
  58
  59 guint
  60 gtk_myfixed_get_type ()
  61 {
  62   static guint myfixed_type = 0;
  63
  64   if (!myfixed_type)
  65     {
  66       GtkTypeInfo myfixed_info =
  67       {
  68         "GtkMyFixed",
  69         sizeof (GtkMyFixed),
  70         sizeof (GtkMyFixedClass),
  71         (GtkClassInitFunc) gtk_myfixed_class_init,
  72         (GtkObjectInitFunc) gtk_myfixed_init,
  73 #if (GTK_MINOR_VERSION > 0)
  74         /* reserved_1 */ NULL,
  75         /* reserved_2 */ NULL,
  76         (GtkClassInitFunc) NULL,
  77 #else
  78         (GtkArgSetFunc) NULL,
  79         (GtkArgGetFunc) NULL,
  80 #endif
  81       };
  82
  83       myfixed_type = gtk_type_unique (gtk_container_get_type (), &myfixed_info);
  84     }
  85
  86   return myfixed_type;
  87 }
  88
  89 static void
  90 gtk_myfixed_class_init (GtkMyFixedClass *klass)
  91 {
  92   GtkObjectClass *object_class;
  93   GtkWidgetClass *widget_class;
  94   GtkContainerClass *container_class;
  95
  96   object_class = (GtkObjectClass*) klass;
  97   widget_class = (GtkWidgetClass*) klass;
  98   container_class = (GtkContainerClass*) klass;
  99
 100 #if (GTK_MINOR_VERSION > 0)
 101   parent_class = gtk_type_class (GTK_TYPE_CONTAINER);
 102 #else
 103   parent_class = gtk_type_class (gtk_container_get_type ());
 104 #endif
 105
 106   widget_class->map = gtk_myfixed_map;
 107 #if (GTK_MINOR_VERSION == 0)
 108   widget_class->unmap = gtk_myfixed_unmap;
 109 #endif
 110   widget_class->realize = gtk_myfixed_realize;
 111   widget_class->size_request = gtk_myfixed_size_request;
 112   widget_class->size_allocate = gtk_myfixed_size_allocate;
 113   widget_class->draw = gtk_myfixed_draw;
 114   widget_class->expose_event = gtk_myfixed_expose;
 115
 116   container_class->add = gtk_myfixed_add;
 117   container_class->remove = gtk_myfixed_remove;
 118 #if (GTK_MINOR_VERSION > 0)
 119   container_class->forall = gtk_myfixed_foreach;
 120 #else
 121   container_class->foreach = gtk_myfixed_foreach;
 122 #endif
 123
 124 #if (GTK_MINOR_VERSION > 0)
 125   container_class->child_type = gtk_myfixed_child_type;
 126 #endif
 127
 128 #if (GTK_MINOR_VERSION > 0)
 129   klass->set_scroll_adjustments = gtk_myfixed_scroll_set_adjustments;
 130
 131   widget_class->set_scroll_adjustments_signal =
 132     gtk_signal_new ("set_scroll_adjustments",
 133                     GTK_RUN_LAST,
 134                     object_class->type,
 135                     GTK_SIGNAL_OFFSET (GtkMyFixedClass, set_scroll_adjustments),
 136                     gtk_marshal_NONE__POINTER_POINTER,
 137                     GTK_TYPE_NONE, 2, GTK_TYPE_ADJUSTMENT, GTK_TYPE_ADJUSTMENT);
 138 #endif
 139 }
 140
 141 #if (GTK_MINOR_VERSION > 0)
 142 static GtkType
 143 gtk_myfixed_child_type (GtkContainer     *container)
 144 {
 145   return GTK_TYPE_WIDGET;
 146 }
 147 #endif
 148
 149 static void
 150 gtk_myfixed_init (GtkMyFixed *myfixed)
 151 {
 152   GTK_WIDGET_UNSET_FLAGS (myfixed, GTK_NO_WINDOW);
 153
 154 #if (GTK_MINOR_VERSION == 0)
 155   GTK_WIDGET_SET_FLAGS (myfixed, GTK_BASIC);
 156 #endif
 157
 158 #if (GTK_MINOR_VERSION > 0)
 159   myfixed->shadow_type = GTK_SHADOW_NONE;
 160 #endif
 161
 162   myfixed->children = NULL;
 163 }
 164
 165 GtkWidget*
 166 gtk_myfixed_new ()
 167 {
 168   GtkMyFixed *myfixed;
 169
 170   myfixed = gtk_type_new (gtk_myfixed_get_type ());
 171
 172   return GTK_WIDGET (myfixed);
 173 }
 174
 175 #if (GTK_MINOR_VERSION > 0)
 176 void  gtk_myfixed_scroll_set_adjustments (GtkMyFixed     *myfixed,
 177                                                GtkAdjustment *hadj,
 178                                                GtkAdjustment *vadj)
 179 {
 180    /* OK, this is embarassing, but this function has to be here */
 181 }
 182
 183 void
 184 gtk_myfixed_set_shadow_type (GtkMyFixed   *myfixed,
 185                               GtkShadowType  type)
 186 {
 187   g_return_if_fail (myfixed != NULL);
 188   g_return_if_fail (GTK_IS_MYFIXED (myfixed));
 189
 190   if ((GtkShadowType) myfixed->shadow_type != type)
 191     {
 192       myfixed->shadow_type = type;
 193
 194       if (GTK_WIDGET_VISIBLE (myfixed))
 195         {
 196           gtk_widget_size_allocate (GTK_WIDGET (myfixed), &(GTK_WIDGET (myfixed)->allocation));
 197           gtk_widget_queue_draw (GTK_WIDGET (myfixed));
 198         }
 199     }
 200 }
 201 #endif
 202
 203 void
 204 gtk_myfixed_put (GtkMyFixed   *myfixed,
 205                  GtkWidget      *widget,
 206                  gint16         x,
 207                  gint16         y,
 208                  gint16         width,
 209                  gint16         height)
 210 {
 211   GtkMyFixedChild *child_info;
 212
 213   g_return_if_fail (myfixed != NULL);
 214   g_return_if_fail (GTK_IS_MYFIXED (myfixed));
 215   g_return_if_fail (widget != NULL);
 216
 217   child_info = g_new (GtkMyFixedChild, 1);
 218   child_info->widget = widget;
 219   child_info->x = x;
 220   child_info->y = y;
 221   child_info->width = width;
 222   child_info->height = height;
 223
 224   gtk_widget_set_parent (widget, GTK_WIDGET (myfixed));
 225
 226   myfixed->children = g_list_append (myfixed->children, child_info);
 227
 228   if (GTK_WIDGET_REALIZED (myfixed))
 229     gtk_widget_realize (widget);
 230
 231   if (GTK_WIDGET_VISIBLE (myfixed) && GTK_WIDGET_VISIBLE (widget))
 232     {
 233       if (GTK_WIDGET_MAPPED (myfixed))
 234         gtk_widget_map (widget);
 235
 236       gtk_widget_queue_resize (GTK_WIDGET (myfixed));
 237     }
 238 }
 239
 240 void
 241 gtk_myfixed_move (GtkMyFixed     *myfixed,
 242                   GtkWidget      *widget,
 243                   gint16         x,
 244                   gint16         y)
 245 {
 246   GtkMyFixedChild *child;
 247   GList *children;
 248
 249   g_return_if_fail (myfixed != NULL);
 250   g_return_if_fail (GTK_IS_MYFIXED (myfixed));
 251   g_return_if_fail (widget != NULL);
 252
 253   children = myfixed->children;
 254   while (children)
 255     {
 256       child = children->data;
 257       children = children->next;
 258
 259       if (child->widget == widget)
 260         {
 261            gtk_myfixed_set_size( myfixed, widget, x, y, child->width, child->height );
 262            break;
 263         }
 264     }
 265 }
 266
 267 void
 268 gtk_myfixed_resize (GtkMyFixed     *myfixed,
 269                     GtkWidget      *widget,
 270                     gint16         width,
 271                     gint16         height)
 272 {
 273   GtkMyFixedChild *child;
 274   GList *children;
 275
 276   g_return_if_fail (myfixed != NULL);
 277   g_return_if_fail (GTK_IS_MYFIXED (myfixed));
 278   g_return_if_fail (widget != NULL);
 279
 280   children = myfixed->children;
 281   while (children)
 282     {
 283       child = children->data;
 284       children = children->next;
 285
 286       if (child->widget == widget)
 287         {
 288            gtk_myfixed_set_size( myfixed, widget, child->x, child->y, width, height );
 289            break;
 290         }
 291     }
 292 }
 293
 294 void
 295 gtk_myfixed_set_size (GtkMyFixed     *myfixed,
 296                       GtkWidget      *widget,
 297                       gint16         x,
 298                       gint16         y,
 299                       gint16         width,
 300                       gint16         height)
 301 {
 302   GtkMyFixedChild *child;
 303   GList *children;
 304   GtkAllocation child_allocation;
 305
 306   g_return_if_fail (myfixed != NULL);
 307   g_return_if_fail (GTK_IS_MYFIXED (myfixed));
 308   g_return_if_fail (widget != NULL);
 309
 310   children = myfixed->children;
 311   while (children)
 312     {
 313       child = children->data;
 314       children = children->next;
 315
 316       if (child->widget == widget)
 317         {
 318           if ((child->x == x) &&
 319               (child->y == y) &&
 320               (child->width == width) &&
 321               (child->height == height)) return;
 322
 323           child->x = x;
 324           child->y = y;
 325           child->width = width;
 326           child->height = height;
 327
 328           if (GTK_WIDGET_VISIBLE (widget) && GTK_WIDGET_VISIBLE (myfixed))
 329           {
 330              if ((child->width > 1) && (child->height > 1) && (GTK_WIDGET_REALIZED(widget)))
 331              {
 332                 child_allocation.x = child->x;
 333                 child_allocation.y = child->y;
 334                 child_allocation.width = child->width;
 335                 child_allocation.height = child->height;
 336                 gtk_widget_size_allocate (widget, &child_allocation);
 337              }
 338              else
 339              {
 340                 gtk_widget_queue_resize (GTK_WIDGET (myfixed));
 341              }
 342           }
 343
 344           break;
 345         }
 346     }
 347 }
 348
 349 static void
 350 gtk_myfixed_map (GtkWidget *widget)
 351 {
 352   GtkMyFixed *myfixed;
 353   GtkMyFixedChild *child;
 354   GList *children;
 355
 356   g_return_if_fail (widget != NULL);
 357   g_return_if_fail (GTK_IS_MYFIXED (widget));
 358
 359   GTK_WIDGET_SET_FLAGS (widget, GTK_MAPPED);
 360   myfixed = GTK_MYFIXED (widget);
 361
 362   children = myfixed->children;
 363   while (children)
 364     {
 365       child = children->data;
 366       children = children->next;
 367
 368       if (GTK_WIDGET_VISIBLE (child->widget) &&
 369           !GTK_WIDGET_MAPPED (child->widget))
 370         gtk_widget_map (child->widget);
 371     }
 372
 373   gdk_window_show (widget->window);
 374 }
 375
 376 #if (GTK_MINOR_VERSION == 0)
 377 static void
 378 gtk_myfixed_unmap (GtkWidget *widget)
 379 {
 380   g_return_if_fail (widget != NULL);
 381   g_return_if_fail (GTK_IS_MYFIXED (widget));
 382
 383   GTK_WIDGET_UNSET_FLAGS (widget, GTK_MAPPED);
 384 }
 385 #endif
 386
 387 static void
 388 gtk_myfixed_realize (GtkWidget *widget)
 389 {
 390   GtkMyFixed *myfixed;
 391   GdkWindowAttr attributes;
 392   gint attributes_mask;
 393
 394   g_return_if_fail (widget != NULL);
 395   g_return_if_fail (GTK_IS_MYFIXED (widget));
 396
 397   myfixed = GTK_MYFIXED (widget);
 398
 399   GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
 400
 401   attributes.window_type = GDK_WINDOW_CHILD;
 402
 403 #if (GTK_MINOR_VERSION > 0)
 404   attributes.x = widget->allocation.x;
 405   attributes.y = widget->allocation.y;
 406   attributes.width = widget->allocation.width;
 407   attributes.height = widget->allocation.height;
 408
 409   if (myfixed->shadow_type != GTK_SHADOW_NONE)
 410   {
 411       attributes.x += 2;
 412       attributes.y += 2;
 413       attributes.width -= 4;
 414       attributes.height -= 4;
 415   }
 416
 417   if (attributes.width < 2) attributes.width = 2;
 418   if (attributes.height < 2) attributes.height = 2;
 419 #else
 420   attributes.x = widget->allocation.x;
 421   attributes.y = widget->allocation.y;
 422   attributes.width = 32000;
 423   attributes.height = 32000;
 424 #endif
 425   attributes.wclass = GDK_INPUT_OUTPUT;
 426   attributes.visual = gtk_widget_get_visual (widget);
 427   attributes.colormap = gtk_widget_get_colormap (widget);
 428   attributes.event_mask = gtk_widget_get_events (widget);
 429   attributes.event_mask |=
 430   GDK_EXPOSURE_MASK     |
 431   GDK_POINTER_MOTION_MASK       |
 432   GDK_POINTER_MOTION_HINT_MASK  |
 433   GDK_BUTTON_MOTION_MASK        |
 434   GDK_BUTTON1_MOTION_MASK       |
 435   GDK_BUTTON2_MOTION_MASK       |
 436   GDK_BUTTON3_MOTION_MASK       |
 437   GDK_BUTTON_PRESS_MASK         |
 438   GDK_BUTTON_RELEASE_MASK       |
 439   GDK_KEY_PRESS_MASK            |
 440   GDK_KEY_RELEASE_MASK          |
 441   GDK_ENTER_NOTIFY_MASK         |
 442   GDK_LEAVE_NOTIFY_MASK         |
 443   GDK_FOCUS_CHANGE_MASK;
 444
 445   attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
 446
 447   widget->window = gdk_window_new (gtk_widget_get_parent_window (widget), &attributes,
 448                                    attributes_mask);
 449   gdk_window_set_user_data (widget->window, widget);
 450
 451   widget->style = gtk_style_attach (widget->style, widget->window);
 452   gtk_style_set_background (widget->style, widget->window, GTK_STATE_NORMAL);
 453 }
 454
 455 static void
 456 gtk_myfixed_size_request (GtkWidget      *widget,
 457                         GtkRequisition *requisition)
 458 {
 459   GtkMyFixed *myfixed;
 460   GtkMyFixedChild *child;
 461   GList *children;
 462   GtkRequisition child_requisition;
 463
 464   g_return_if_fail (widget != NULL);
 465   g_return_if_fail (GTK_IS_MYFIXED (widget));
 466   g_return_if_fail (requisition != NULL);
 467
 468   myfixed = GTK_MYFIXED (widget);
 469
 470   children = myfixed->children;
 471   while (children)
 472     {
 473       child = children->data;
 474       children = children->next;
 475
 476       if (GTK_WIDGET_VISIBLE (child->widget))
 477         {
 478           gtk_widget_size_request (child->widget, &child_requisition);
 479         }
 480     }
 481
 482   /* request very little, I'm not sure if requesting nothing
 483      will always have positive effects on stability... */
 484   requisition->width = 2;
 485   requisition->height = 2;
 486 }
 487
 488 static void
 489 gtk_myfixed_size_allocate (GtkWidget     *widget,
 490                            GtkAllocation *allocation)
 491 {
 492   GtkMyFixed *myfixed;
 493   gint border;
 494   GtkMyFixedChild *child;
 495   GtkAllocation child_allocation;
 496   GList *children;
 497
 498   g_return_if_fail (widget != NULL);
 499   g_return_if_fail (GTK_IS_MYFIXED(widget));
 500   g_return_if_fail (allocation != NULL);
 501
 502   myfixed = GTK_MYFIXED (widget);
 503
 504     widget->allocation = *allocation;
 505 #if (GTK_MINOR_VERSION > 0)
 506   if (myfixed->shadow_type == GTK_SHADOW_NONE)
 507     border = 0;
 508   else
 509     border = 2;
 510 #else
 511   border = 0;
 512 #endif
 513
 514   if (GTK_WIDGET_REALIZED (widget))
 515   {
 516     gdk_window_move_resize( widget->window,
 517                             allocation->x+border, allocation->y+border,
 518 #if (GTK_MINOR_VERSION > 0)
 519                             allocation->width-border*2, allocation->height-border*2
 520 #else
 521                             32000, 32000
 522 #endif
 523                            );
 524   }
 525
 526   children = myfixed->children;
 527   while (children)
 528     {
 529       child = children->data;
 530       children = children->next;
 531
 532       /* please look at the text in wxWindow::DoSetSize() on why the
 533          test GTK_WIDGET_REALIZED() has to be here */
 534       if (GTK_WIDGET_VISIBLE (child->widget))
 535       {
 536 /*
 537         if (GTK_IS_NOTEBOOK(child->widget) && !GTK_WIDGET_REALIZED(child->widget))
 538         {
 539           gtk_widget_queue_resize( child->widget );
 540         }
 541         else
 542 */
 543         {
 544           child_allocation.x = child->x;
 545           child_allocation.y = child->y;
 546           child_allocation.width = child->width;
 547           child_allocation.height = child->height;
 548           gtk_widget_size_allocate (child->widget, &child_allocation);
 549         }
 550      }
 551    }
 552 }
 553
 554 static void
 555 gtk_myfixed_paint (GtkWidget    *widget,
 556                    GdkRectangle *area)
 557 {
 558   g_return_if_fail (widget != NULL);
 559   g_return_if_fail (GTK_IS_MYFIXED (widget));
 560   g_return_if_fail (area != NULL);
 561
 562   if (GTK_WIDGET_DRAWABLE (widget))
 563       gdk_window_clear_area (widget->window,
 564                              area->x, area->y,
 565                              area->width, area->height);
 566 }
 567
 568 static void
 569 gtk_myfixed_draw (GtkWidget    *widget,
 570                   GdkRectangle *area)
 571 {
 572   GtkMyFixed *myfixed;
 573   GtkMyFixedChild *child;
 574   GdkRectangle child_area;
 575   GList *children;
 576
 577   g_return_if_fail (widget != NULL);
 578   g_return_if_fail (GTK_IS_MYFIXED (widget));
 579
 580   if (GTK_WIDGET_DRAWABLE (widget))
 581     {
 582       myfixed = GTK_MYFIXED (widget);
 583       gtk_myfixed_paint (widget, area);
 584
 585       children = myfixed->children;
 586       while (children)
 587         {
 588           child = children->data;
 589           children = children->next;
 590
 591           if (gtk_widget_intersect (child->widget, area, &child_area))
 592             gtk_widget_draw (child->widget, &child_area);
 593         }
 594     }
 595 }
 596
 597 static gint
 598 gtk_myfixed_expose (GtkWidget      *widget,
 599                     GdkEventExpose *event)
 600 {
 601   GtkMyFixed *myfixed;
 602   GtkMyFixedChild *child;
 603   GdkEventExpose child_event;
 604   GList *children;
 605
 606   g_return_val_if_fail (widget != NULL, FALSE);
 607   g_return_val_if_fail (GTK_IS_MYFIXED (widget), FALSE);
 608   g_return_val_if_fail (event != NULL, FALSE);
 609
 610   if (GTK_WIDGET_DRAWABLE (widget))
 611     {
 612       myfixed = GTK_MYFIXED (widget);
 613
 614       child_event = *event;
 615
 616       children = myfixed->children;
 617       while (children)
 618         {
 619           child = children->data;
 620           children = children->next;
 621
 622           if (GTK_WIDGET_NO_WINDOW (child->widget) &&
 623               gtk_widget_intersect (child->widget, &event->area,
 624                                     &child_event.area))
 625             gtk_widget_event (child->widget, (GdkEvent*) &child_event);
 626         }
 627     }
 628
 629   return FALSE;
 630 }
 631
 632 static void
 633 gtk_myfixed_add (GtkContainer *container,
 634                GtkWidget    *widget)
 635 {
 636   g_return_if_fail (container != NULL);
 637   g_return_if_fail (GTK_IS_MYFIXED (container));
 638   g_return_if_fail (widget != NULL);
 639
 640   gtk_myfixed_put (GTK_MYFIXED (container), widget, 0, 0, 20, 20 );
 641 }
 642
 643 static void
 644 gtk_myfixed_remove (GtkContainer *container,
 645                   GtkWidget    *widget)
 646 {
 647   GtkMyFixed *myfixed;
 648   GtkMyFixedChild *child;
 649   GList *children;
 650
 651   g_return_if_fail (container != NULL);
 652   g_return_if_fail (GTK_IS_MYFIXED (container));
 653   g_return_if_fail (widget != NULL);
 654
 655   myfixed = GTK_MYFIXED (container);
 656
 657   children = myfixed->children;
 658   while (children)
 659     {
 660       child = children->data;
 661
 662       if (child->widget == widget)
 663         {
 664           gboolean was_visible = GTK_WIDGET_VISIBLE (widget);
 665
 666           gtk_widget_unparent (widget);
 667
 668           myfixed->children = g_list_remove_link (myfixed->children, children);
 669           g_list_free (children);
 670           g_free (child);
 671
 672           if (was_visible && GTK_WIDGET_VISIBLE (container))
 673             gtk_widget_queue_resize (GTK_WIDGET (container));
 674
 675           break;
 676         }
 677
 678       children = children->next;
 679     }
 680 }
 681
 682 static void
 683 gtk_myfixed_foreach (GtkContainer *container,
 684 #if (GTK_MINOR_VERSION > 0)
 685                    gboolean      include_internals,
 686 #endif
 687                    GtkCallback   callback,
 688                    gpointer      callback_data)
 689 {
 690   GtkMyFixed *myfixed;
 691   GtkMyFixedChild *child;
 692   GList *children;
 693
 694   g_return_if_fail (container != NULL);
 695   g_return_if_fail (GTK_IS_MYFIXED (container));
 696   g_return_if_fail (callback != NULL);
 697
 698   myfixed = GTK_MYFIXED (container);
 699
 700   children = myfixed->children;
 701   while (children)
 702     {
 703       child = children->data;
 704       children = children->next;
 705
 706       (* callback) (child->widget, callback_data);
 707     }
 708 }
 709
 710
 711 #ifdef __cplusplus
 712 }
 713 #endif /* __cplusplus */
 714