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fix warning about empty if statement in HDCClipper ctor in release build
[wxWidgets.git] / src / gtk / win_gtk.c
1 /* ///////////////////////////////////////////////////////////////////////////
2 // Name: src/gtk/win_gtk.c
3 // Purpose: Native GTK+ widget for wxWidgets, based on GtkLayout and
4 // GtkFixed. It makes use of the gravity window property and
5 // therefore does not work with GTK 1.0.
6 // Author: Robert Roebling
7 // Id: $Id$
8 // Copyright: (c) 1998 Robert Roebling
9 // Licence: wxWidgets licence
10 /////////////////////////////////////////////////////////////////////////// */
11
12 #ifdef VMS
13 #define XCheckIfEvent XCHECKIFEVENT
14 #endif
15
16 #include "wx/platform.h"
17 #include "wx/gtk/win_gtk.h"
18
19 #ifdef __cplusplus
20 extern "C" {
21 #endif /* __cplusplus */
22
23 typedef struct _GtkPizzaAdjData GtkPizzaAdjData;
24
25 struct _GtkPizzaAdjData
26 {
27 gint dx;
28 gint dy;
29 };
30
31 static void gtk_pizza_class_init (GtkPizzaClass *klass);
32 static void gtk_pizza_init (GtkPizza *pizza);
33
34 static void gtk_pizza_realize (GtkWidget *widget);
35 static void gtk_pizza_unrealize (GtkWidget *widget);
36
37 static void gtk_pizza_map (GtkWidget *widget);
38
39 static void gtk_pizza_size_request (GtkWidget *widget,
40 GtkRequisition *requisition);
41 static void gtk_pizza_size_allocate (GtkWidget *widget,
42 GtkAllocation *allocation);
43 static gint gtk_pizza_expose (GtkWidget *widget,
44 GdkEventExpose *event);
45 static void gtk_pizza_style_set (GtkWidget *widget,
46 GtkStyle *previous_style);
47 static void gtk_pizza_add (GtkContainer *container,
48 GtkWidget *widget);
49 static void gtk_pizza_remove (GtkContainer *container,
50 GtkWidget *widget);
51 static void gtk_pizza_forall (GtkContainer *container,
52 gboolean include_internals,
53 GtkCallback callback,
54 gpointer callback_data);
55
56 static void gtk_pizza_allocate_child (GtkPizza *pizza,
57 GtkPizzaChild *child);
58 static void gtk_pizza_adjust_allocations_recurse (GtkWidget *widget,
59 gpointer cb_data);
60
61 static GtkType gtk_pizza_child_type (GtkContainer *container);
62
63 static void gtk_pizza_scroll_set_adjustments (GtkPizza *pizza,
64 GtkAdjustment *hadj,
65 GtkAdjustment *vadj);
66
67 /* static */
68 GtkContainerClass *pizza_parent_class = NULL;
69
70 GtkType
71 gtk_pizza_get_type ()
72 {
73 static GtkType pizza_type = 0;
74
75 if (!pizza_type)
76 {
77 static const GTypeInfo pizza_info =
78 {
79 sizeof (GtkPizzaClass),
80 NULL, /* base_init */
81 NULL, /* base_finalize */
82 (GClassInitFunc) gtk_pizza_class_init,
83 NULL, /* class_finalize */
84 NULL, /* class_data */
85 sizeof (GtkPizza),
86 16, /* n_preallocs */
87 (GInstanceInitFunc) gtk_pizza_init,
88 };
89 pizza_type = g_type_register_static (GTK_TYPE_CONTAINER, "GtkPizza", &pizza_info, (GTypeFlags)0);
90 }
91
92 return pizza_type;
93 }
94
95 /* Marshaller needed for set_scroll_adjustments signal,
96 generated with GLib-2.4.6 glib-genmarshal */
97 #define g_marshal_value_peek_object(v) g_value_get_object (v)
98 static void
99 g_cclosure_user_marshal_VOID__OBJECT_OBJECT (GClosure *closure,
100 GValue *return_value,
101 guint n_param_values,
102 const GValue *param_values,
103 gpointer invocation_hint,
104 gpointer marshal_data)
105 {
106 typedef void (*GMarshalFunc_VOID__OBJECT_OBJECT) (gpointer data1,
107 gpointer arg_1,
108 gpointer arg_2,
109 gpointer data2);
110 register GMarshalFunc_VOID__OBJECT_OBJECT callback;
111 register GCClosure *cc = (GCClosure*) closure;
112 register gpointer data1, data2;
113
114 g_return_if_fail (n_param_values == 3);
115
116 if (G_CCLOSURE_SWAP_DATA (closure))
117 {
118 data1 = closure->data;
119 data2 = g_value_peek_pointer (param_values + 0);
120 }
121 else
122 {
123 data1 = g_value_peek_pointer (param_values + 0);
124 data2 = closure->data;
125 }
126 callback = (GMarshalFunc_VOID__OBJECT_OBJECT) (marshal_data ? marshal_data : cc->callback);
127
128 callback (data1,
129 g_marshal_value_peek_object (param_values + 1),
130 g_marshal_value_peek_object (param_values + 2),
131 data2);
132 }
133
134 static void
135 gtk_pizza_class_init (GtkPizzaClass *klass)
136 {
137 GtkObjectClass *object_class;
138 GtkWidgetClass *widget_class;
139 GtkContainerClass *container_class;
140
141 object_class = (GtkObjectClass*) klass;
142 widget_class = (GtkWidgetClass*) klass;
143 container_class = (GtkContainerClass*) klass;
144 pizza_parent_class = gtk_type_class (GTK_TYPE_CONTAINER);
145
146 widget_class->map = gtk_pizza_map;
147 widget_class->realize = gtk_pizza_realize;
148 widget_class->unrealize = gtk_pizza_unrealize;
149 widget_class->size_request = gtk_pizza_size_request;
150 widget_class->size_allocate = gtk_pizza_size_allocate;
151 widget_class->expose_event = gtk_pizza_expose;
152 widget_class->style_set = gtk_pizza_style_set;
153
154 container_class->add = gtk_pizza_add;
155 container_class->remove = gtk_pizza_remove;
156 container_class->forall = gtk_pizza_forall;
157
158 container_class->child_type = gtk_pizza_child_type;
159
160 klass->set_scroll_adjustments = gtk_pizza_scroll_set_adjustments;
161
162 widget_class->set_scroll_adjustments_signal =
163 g_signal_new(
164 "set_scroll_adjustments",
165 G_TYPE_FROM_CLASS(object_class),
166 G_SIGNAL_RUN_LAST,
167 G_STRUCT_OFFSET(GtkPizzaClass, set_scroll_adjustments),
168 NULL,
169 NULL,
170 g_cclosure_user_marshal_VOID__OBJECT_OBJECT,
171 G_TYPE_NONE,
172 2,
173 GTK_TYPE_ADJUSTMENT,
174 GTK_TYPE_ADJUSTMENT);
175 }
176
177 static GtkType
178 gtk_pizza_child_type (GtkContainer *container)
179 {
180 return GTK_TYPE_WIDGET;
181 }
182
183 static void
184 gtk_pizza_init (GtkPizza *pizza)
185 {
186 GTK_WIDGET_UNSET_FLAGS (pizza, GTK_NO_WINDOW);
187
188 pizza->shadow_type = GTK_MYSHADOW_NONE;
189
190 pizza->children = NULL;
191
192 pizza->width = 20;
193 pizza->height = 20;
194
195 pizza->bin_window = NULL;
196
197 pizza->xoffset = 0;
198 pizza->yoffset = 0;
199
200 pizza->scroll_x = 0;
201 pizza->scroll_y = 0;
202
203 pizza->external_expose = FALSE;
204 }
205
206 GtkWidget*
207 gtk_pizza_new ()
208 {
209 GtkPizza *pizza;
210
211 pizza = g_object_new (gtk_pizza_get_type (), NULL);
212
213 return GTK_WIDGET (pizza);
214 }
215
216 static void
217 gtk_pizza_scroll_set_adjustments (GtkPizza *pizza,
218 GtkAdjustment *hadj,
219 GtkAdjustment *vadj)
220 {
221 /* We handle scrolling in the wxScrolledWindow, not here. */
222 }
223
224 void
225 gtk_pizza_set_shadow_type (GtkPizza *pizza,
226 GtkMyShadowType type)
227 {
228 g_return_if_fail (pizza != NULL);
229 g_return_if_fail (GTK_IS_PIZZA (pizza));
230
231 if (pizza->shadow_type != type)
232 {
233 pizza->shadow_type = type;
234
235 if (GTK_WIDGET_VISIBLE (pizza))
236 {
237 gtk_widget_size_allocate (GTK_WIDGET (pizza), &(GTK_WIDGET (pizza)->allocation));
238 gtk_widget_queue_draw (GTK_WIDGET (pizza));
239 }
240 }
241 }
242
243 void
244 gtk_pizza_set_external (GtkPizza *pizza,
245 gboolean expose)
246 {
247 g_return_if_fail (pizza != NULL);
248 g_return_if_fail (GTK_IS_PIZZA (pizza));
249
250 pizza->external_expose = expose;
251 }
252
253 void
254 gtk_pizza_put (GtkPizza *pizza,
255 GtkWidget *widget,
256 gint x,
257 gint y,
258 gint width,
259 gint height)
260 {
261 GtkPizzaChild *child_info;
262
263 g_return_if_fail (pizza != NULL);
264 g_return_if_fail (GTK_IS_PIZZA (pizza));
265 g_return_if_fail (widget != NULL);
266
267 child_info = g_new (GtkPizzaChild, 1);
268
269 child_info->widget = widget;
270 child_info->x = x;
271 child_info->y = y;
272 child_info->width = width;
273 child_info->height = height;
274
275 pizza->children = g_list_append (pizza->children, child_info);
276
277 if (GTK_WIDGET_REALIZED (pizza))
278 gtk_widget_set_parent_window (widget, pizza->bin_window);
279
280 gtk_widget_set_parent (widget, GTK_WIDGET (pizza));
281
282 gtk_widget_set_size_request (widget, width, height);
283 }
284
285 void
286 gtk_pizza_set_size (GtkPizza *pizza,
287 GtkWidget *widget,
288 gint x,
289 gint y,
290 gint width,
291 gint height)
292 {
293 GtkPizzaChild *child;
294 GList *children;
295
296 g_return_if_fail (pizza != NULL);
297 g_return_if_fail (GTK_IS_PIZZA (pizza));
298 g_return_if_fail (widget != NULL);
299
300 #ifndef WX_WARN_ILLEGAL_SETSIZE
301 /* this really shouldn't happen -- but it does, a lot, right now and we
302 can't pass negative values to gtk_widget_set_size_request() without getting
303 a warning printed out, so filter them out here */
304 if ( width < 0 )
305 width = 0;
306 if ( height < 0 )
307 height = 0;
308 #endif
309
310 children = pizza->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 gtk_widget_set_size_request (widget, width, height);
329
330 return;
331 }
332 }
333 }
334
335 static void
336 gtk_pizza_map (GtkWidget *widget)
337 {
338 GtkPizza *pizza;
339 GtkPizzaChild *child;
340 GList *children;
341
342 g_return_if_fail (widget != NULL);
343 g_return_if_fail (GTK_IS_PIZZA (widget));
344
345 GTK_WIDGET_SET_FLAGS (widget, GTK_MAPPED);
346 pizza = GTK_PIZZA (widget);
347
348 children = pizza->children;
349 while (children)
350 {
351 child = children->data;
352 children = children->next;
353
354 if ( GTK_WIDGET_VISIBLE (child->widget) &&
355 !GTK_WIDGET_MAPPED (child->widget) )
356 {
357 gtk_widget_map (child->widget);
358 }
359 }
360
361 gdk_window_show (widget->window);
362 gdk_window_show (pizza->bin_window);
363 }
364
365 static void
366 gtk_pizza_realize (GtkWidget *widget)
367 {
368 GtkPizza *pizza;
369 GdkWindowAttr attributes;
370 gint attributes_mask;
371 GtkPizzaChild *child;
372 GList *children;
373
374 g_return_if_fail (widget != NULL);
375 g_return_if_fail (GTK_IS_PIZZA (widget));
376
377 pizza = GTK_PIZZA (widget);
378 GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
379
380 attributes.window_type = GDK_WINDOW_CHILD;
381
382 attributes.x = widget->allocation.x;
383 attributes.y = widget->allocation.y;
384 attributes.width = widget->allocation.width;
385 attributes.height = widget->allocation.height;
386
387 #ifndef __WXUNIVERSAL__
388 if (pizza->shadow_type == GTK_MYSHADOW_NONE)
389 {
390 /* no border, no changes to sizes */
391 }
392 else if (pizza->shadow_type == GTK_MYSHADOW_THIN)
393 {
394 /* GTK_MYSHADOW_THIN == wxSIMPLE_BORDER */
395 attributes.x += 1;
396 attributes.y += 1;
397 attributes.width -= 2;
398 attributes.height -= 2;
399 }
400 else
401 {
402 /* GTK_MYSHADOW_IN == wxSUNKEN_BORDER */
403 /* GTK_MYSHADOW_OUT == wxRAISED_BORDER */
404 attributes.x += 2;
405 attributes.y += 2;
406 attributes.width -= 4;
407 attributes.height -= 4;
408 }
409 #endif /* __WXUNIVERSAL__ */
410
411 /* minimal size */
412 if (attributes.width < 2) attributes.width = 2;
413 if (attributes.height < 2) attributes.height = 2;
414
415 attributes.wclass = GDK_INPUT_OUTPUT;
416 attributes.visual = gtk_widget_get_visual (widget);
417 attributes.colormap = gtk_widget_get_colormap (widget);
418 attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK;
419 attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
420
421 widget->window = gdk_window_new(gtk_widget_get_parent_window (widget),
422 &attributes, attributes_mask);
423 gdk_window_set_user_data (widget->window, widget);
424
425 attributes.x = 0;
426 attributes.y = 0;
427
428 attributes.event_mask = gtk_widget_get_events (widget);
429 attributes.event_mask |= GDK_EXPOSURE_MASK |
430 GDK_SCROLL_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 pizza->bin_window = gdk_window_new(widget->window,
446 &attributes, attributes_mask);
447 gdk_window_set_user_data (pizza->bin_window, widget);
448
449 widget->style = gtk_style_attach (widget->style, widget->window);
450 gtk_style_set_background (widget->style, widget->window, GTK_STATE_NORMAL);
451 gtk_style_set_background (widget->style, pizza->bin_window, GTK_STATE_NORMAL );
452
453 /*
454 gdk_window_set_back_pixmap( widget->window, NULL, FALSE );
455 gdk_window_set_back_pixmap( pizza->bin_window, NULL, FALSE );
456 */
457
458 /* cannot be done before realisation */
459 children = pizza->children;
460 while (children)
461 {
462 child = children->data;
463 children = children->next;
464
465 gtk_widget_set_parent_window (child->widget, pizza->bin_window);
466 }
467 }
468
469 static void
470 gtk_pizza_unrealize (GtkWidget *widget)
471 {
472 GtkPizza *pizza;
473
474 g_return_if_fail (widget != NULL);
475 g_return_if_fail (GTK_IS_PIZZA (widget));
476
477 pizza = GTK_PIZZA (widget);
478
479 gdk_window_set_user_data (pizza->bin_window, NULL);
480 gdk_window_destroy (pizza->bin_window);
481 pizza->bin_window = NULL;
482
483 if (GTK_WIDGET_CLASS (pizza_parent_class)->unrealize)
484 (* GTK_WIDGET_CLASS (pizza_parent_class)->unrealize) (widget);
485 }
486
487 static void
488 gtk_pizza_size_request (GtkWidget *widget,
489 GtkRequisition *requisition)
490 {
491 GtkPizza *pizza;
492 GtkPizzaChild *child;
493 GList *children;
494 GtkRequisition child_requisition;
495
496 g_return_if_fail (widget != NULL);
497 g_return_if_fail (GTK_IS_PIZZA (widget));
498 g_return_if_fail (requisition != NULL);
499
500 pizza = GTK_PIZZA (widget);
501
502 children = pizza->children;
503 while (children)
504 {
505 child = children->data;
506 children = children->next;
507
508 if (GTK_WIDGET_VISIBLE (child->widget))
509 {
510 gtk_widget_size_request (child->widget, &child_requisition);
511 }
512 }
513
514 /* request very little, I'm not sure if requesting nothing
515 will always have positive effects on stability... */
516 requisition->width = 2;
517 requisition->height = 2;
518 }
519
520 static void
521 gtk_pizza_size_allocate (GtkWidget *widget,
522 GtkAllocation *allocation)
523 {
524 GtkPizza *pizza;
525 gint border;
526 gint x,y,w,h;
527 GtkPizzaChild *child;
528 GList *children;
529
530 g_return_if_fail (widget != NULL);
531 g_return_if_fail (GTK_IS_PIZZA(widget));
532 g_return_if_fail (allocation != NULL);
533
534 pizza = GTK_PIZZA (widget);
535
536 widget->allocation = *allocation;
537
538 if (pizza->shadow_type == GTK_MYSHADOW_NONE)
539 border = 0;
540 else
541 if (pizza->shadow_type == GTK_MYSHADOW_THIN)
542 border = 1;
543 else
544 border = 2;
545
546 x = allocation->x + border;
547 y = allocation->y + border;
548 w = allocation->width - border*2;
549 h = allocation->height - border*2;
550 if (w < 0)
551 w = 0;
552 if (h < 0)
553 h = 0;
554
555 if (GTK_WIDGET_REALIZED (widget))
556 {
557 gdk_window_move_resize( widget->window, x, y, w, h );
558 gdk_window_move_resize( pizza->bin_window, 0, 0, w, h );
559 }
560
561 children = pizza->children;
562 while (children)
563 {
564 child = children->data;
565 children = children->next;
566
567 gtk_pizza_allocate_child (pizza, child);
568 }
569 }
570
571 static gint
572 gtk_pizza_expose (GtkWidget *widget,
573 GdkEventExpose *event)
574 {
575 GtkPizza *pizza;
576
577 g_return_val_if_fail (widget != NULL, FALSE);
578 g_return_val_if_fail (GTK_IS_PIZZA (widget), FALSE);
579 g_return_val_if_fail (event != NULL, FALSE);
580
581 pizza = GTK_PIZZA (widget);
582
583 if (event->window != pizza->bin_window)
584 return FALSE;
585
586 /* We handle all expose events in window.cpp now. */
587 if (pizza->external_expose)
588 return FALSE;
589
590 (* GTK_WIDGET_CLASS (pizza_parent_class)->expose_event) (widget, event);
591
592 return FALSE;
593 }
594
595 static void
596 gtk_pizza_style_set(GtkWidget *widget, GtkStyle *previous_style)
597 {
598 if (GTK_WIDGET_REALIZED(widget))
599 {
600 gtk_style_set_background(widget->style, widget->window, GTK_STATE_NORMAL);
601 gtk_style_set_background(widget->style, GTK_PIZZA(widget)->bin_window, GTK_STATE_NORMAL );
602 }
603
604 (* GTK_WIDGET_CLASS (pizza_parent_class)->style_set) (widget, previous_style);
605 }
606
607 static void
608 gtk_pizza_add (GtkContainer *container,
609 GtkWidget *widget)
610 {
611 g_return_if_fail (container != NULL);
612 g_return_if_fail (GTK_IS_PIZZA (container));
613 g_return_if_fail (widget != NULL);
614
615 gtk_pizza_put (GTK_PIZZA (container), widget, 0, 0, 20, 20 );
616 }
617
618 static void
619 gtk_pizza_remove (GtkContainer *container,
620 GtkWidget *widget)
621 {
622 GtkPizza *pizza;
623 GtkPizzaChild *child;
624 GList *children;
625
626 g_return_if_fail (container != NULL);
627 g_return_if_fail (GTK_IS_PIZZA (container));
628 g_return_if_fail (widget != NULL);
629
630 pizza = GTK_PIZZA (container);
631
632 children = pizza->children;
633 while (children)
634 {
635 child = children->data;
636
637 if (child->widget == widget)
638 {
639 gtk_widget_unparent (widget);
640
641 /* security checks */
642 g_return_if_fail (GTK_IS_WIDGET (widget));
643
644 pizza->children = g_list_remove_link (pizza->children, children);
645 g_list_free (children);
646 g_free (child);
647
648 /* security checks */
649 g_return_if_fail (GTK_IS_WIDGET (widget));
650
651 break;
652 }
653
654 children = children->next;
655 }
656 }
657
658 static void
659 gtk_pizza_forall (GtkContainer *container,
660 gboolean include_internals,
661 GtkCallback callback,
662 gpointer callback_data)
663 {
664 GtkPizza *pizza;
665 GtkPizzaChild *child;
666 GList *children;
667
668 g_return_if_fail (container != NULL);
669 g_return_if_fail (GTK_IS_PIZZA (container));
670 g_return_if_fail (callback != (GtkCallback)NULL);
671
672 pizza = GTK_PIZZA (container);
673
674 children = pizza->children;
675 while (children)
676 {
677 child = children->data;
678 children = children->next;
679
680 (* callback) (child->widget, callback_data);
681 }
682 }
683
684 static void
685 gtk_pizza_allocate_child (GtkPizza *pizza,
686 GtkPizzaChild *child)
687 {
688 GtkAllocation allocation;
689 GtkRequisition requisition;
690
691 allocation.x = child->x - pizza->xoffset;
692 allocation.y = child->y - pizza->yoffset;
693 gtk_widget_get_child_requisition (child->widget, &requisition);
694 allocation.width = requisition.width;
695 allocation.height = requisition.height;
696
697 gtk_widget_size_allocate (child->widget, &allocation);
698 }
699
700 static void
701 gtk_pizza_adjust_allocations_recurse (GtkWidget *widget,
702 gpointer cb_data)
703 {
704 GtkPizzaAdjData *data = cb_data;
705
706 widget->allocation.x += data->dx;
707 widget->allocation.y += data->dy;
708
709 if (GTK_WIDGET_NO_WINDOW (widget) && GTK_IS_CONTAINER (widget))
710 {
711 gtk_container_forall (GTK_CONTAINER (widget),
712 gtk_pizza_adjust_allocations_recurse,
713 cb_data);
714 }
715 }
716
717 static void
718 gtk_pizza_adjust_allocations (GtkPizza *pizza,
719 gint dx,
720 gint dy)
721 {
722 GList *tmp_list;
723 GtkPizzaAdjData data;
724
725 data.dx = dx;
726 data.dy = dy;
727
728 tmp_list = pizza->children;
729 while (tmp_list)
730 {
731 GtkPizzaChild *child = tmp_list->data;
732 tmp_list = tmp_list->next;
733
734 child->widget->allocation.x += dx;
735 child->widget->allocation.y += dy;
736
737 if (GTK_WIDGET_NO_WINDOW (child->widget) &&
738 GTK_IS_CONTAINER (child->widget))
739 {
740 gtk_container_forall (GTK_CONTAINER (child->widget),
741 gtk_pizza_adjust_allocations_recurse,
742 &data);
743 }
744 }
745 }
746
747 void
748 gtk_pizza_scroll (GtkPizza *pizza, gint dx, gint dy)
749 {
750 pizza->xoffset += dx;
751 pizza->yoffset += dy;
752
753 gtk_pizza_adjust_allocations (pizza, -dx, -dy);
754
755 if (pizza->bin_window)
756 gdk_window_scroll( pizza->bin_window, -dx, -dy );
757 }
758
759 #ifdef __cplusplus
760 }
761 #endif /* __cplusplus */
wxWidgets (Impactor)