src/common/event.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        event.cpp
   3 // Purpose:     Event classes
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     01/02/97
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA) && !defined(__EMX__)
  21 // Some older compilers (such as EMX) cannot handle
  22 // #pragma interface/implementation correctly, iff
  23 // #pragma implementation is used in _two_ translation
  24 // units (as created by e.g. event.cpp compiled for
  25 // libwx_base and event.cpp compiled for libwx_gui_core).
  26 // So we must not use those pragmas for those compilers in
  27 // such files.
  28     #pragma implementation "event.h"
  29 #endif
  30
  31 // For compilers that support precompilation, includes "wx.h".
  32 #include "wx/wxprec.h"
  33
  34 #ifdef __BORLANDC__
  35     #pragma hdrstop
  36 #endif
  37
  38 #ifndef WX_PRECOMP
  39     #include "wx/defs.h"
  40     #include "wx/app.h"
  41     #include "wx/list.h"
  42
  43     #if wxUSE_GUI
  44         #include "wx/control.h"
  45         #include "wx/utils.h"
  46         #include "wx/dc.h"
  47         #include "wx/textctrl.h"
  48     #endif // wxUSE_GUI
  49 #endif
  50
  51 #include "wx/event.h"
  52 #include "wx/module.h"
  53
  54 #if wxUSE_GUI
  55     #include "wx/validate.h"
  56 #if wxUSE_STOPWATCH
  57     #include "wx/stopwatch.h"
  58 #endif
  59 #endif // wxUSE_GUI
  60
  61 // ----------------------------------------------------------------------------
  62 // wxWin macros
  63 // ----------------------------------------------------------------------------
  64
  65 #if wxUSE_BASE
  66     IMPLEMENT_DYNAMIC_CLASS(wxEvtHandler, wxObject)
  67     IMPLEMENT_ABSTRACT_CLASS(wxEvent, wxObject)
  68 #endif // wxUSE_BASE
  69
  70 #if wxUSE_GUI
  71     IMPLEMENT_DYNAMIC_CLASS(wxIdleEvent, wxEvent)
  72     IMPLEMENT_DYNAMIC_CLASS(wxCommandEvent, wxEvent)
  73     IMPLEMENT_DYNAMIC_CLASS(wxNotifyEvent, wxCommandEvent)
  74     IMPLEMENT_DYNAMIC_CLASS(wxScrollEvent, wxCommandEvent)
  75     IMPLEMENT_DYNAMIC_CLASS(wxScrollWinEvent, wxEvent)
  76     IMPLEMENT_DYNAMIC_CLASS(wxMouseEvent, wxEvent)
  77     IMPLEMENT_DYNAMIC_CLASS(wxKeyEvent, wxEvent)
  78     IMPLEMENT_DYNAMIC_CLASS(wxSizeEvent, wxEvent)
  79     IMPLEMENT_DYNAMIC_CLASS(wxPaintEvent, wxEvent)
  80     IMPLEMENT_DYNAMIC_CLASS(wxNcPaintEvent, wxEvent)
  81     IMPLEMENT_DYNAMIC_CLASS(wxEraseEvent, wxEvent)
  82     IMPLEMENT_DYNAMIC_CLASS(wxMoveEvent, wxEvent)
  83     IMPLEMENT_DYNAMIC_CLASS(wxFocusEvent, wxEvent)
  84     IMPLEMENT_DYNAMIC_CLASS(wxChildFocusEvent, wxCommandEvent)
  85     IMPLEMENT_DYNAMIC_CLASS(wxCloseEvent, wxEvent)
  86     IMPLEMENT_DYNAMIC_CLASS(wxShowEvent, wxEvent)
  87     IMPLEMENT_DYNAMIC_CLASS(wxMaximizeEvent, wxEvent)
  88     IMPLEMENT_DYNAMIC_CLASS(wxIconizeEvent, wxEvent)
  89     IMPLEMENT_DYNAMIC_CLASS(wxMenuEvent, wxEvent)
  90     IMPLEMENT_DYNAMIC_CLASS(wxJoystickEvent, wxEvent)
  91     IMPLEMENT_DYNAMIC_CLASS(wxDropFilesEvent, wxEvent)
  92     IMPLEMENT_DYNAMIC_CLASS(wxActivateEvent, wxEvent)
  93     IMPLEMENT_DYNAMIC_CLASS(wxInitDialogEvent, wxEvent)
  94     IMPLEMENT_DYNAMIC_CLASS(wxSetCursorEvent, wxEvent)
  95     IMPLEMENT_DYNAMIC_CLASS(wxSysColourChangedEvent, wxEvent)
  96     IMPLEMENT_DYNAMIC_CLASS(wxDisplayChangedEvent, wxEvent)
  97     IMPLEMENT_DYNAMIC_CLASS(wxUpdateUIEvent, wxCommandEvent)
  98     IMPLEMENT_DYNAMIC_CLASS(wxNavigationKeyEvent, wxEvent)
  99     IMPLEMENT_DYNAMIC_CLASS(wxPaletteChangedEvent, wxEvent)
 100     IMPLEMENT_DYNAMIC_CLASS(wxQueryNewPaletteEvent, wxEvent)
 101     IMPLEMENT_DYNAMIC_CLASS(wxWindowCreateEvent, wxEvent)
 102     IMPLEMENT_DYNAMIC_CLASS(wxWindowDestroyEvent, wxEvent)
 103     IMPLEMENT_DYNAMIC_CLASS(wxHelpEvent, wxCommandEvent)
 104     IMPLEMENT_DYNAMIC_CLASS(wxContextMenuEvent, wxCommandEvent)
 105     IMPLEMENT_DYNAMIC_CLASS(wxMouseCaptureChangedEvent, wxEvent)
 106 #endif // wxUSE_GUI
 107
 108 #if wxUSE_BASE
 109
 110 const wxEventTable *wxEvtHandler::GetEventTable() const
 111     { return &wxEvtHandler::sm_eventTable; }
 112
 113 const wxEventTable wxEvtHandler::sm_eventTable =
 114     { (const wxEventTable *)NULL, &wxEvtHandler::sm_eventTableEntries[0] };
 115
 116 wxEventHashTable &wxEvtHandler::GetEventHashTable() const
 117     { return wxEvtHandler::sm_eventHashTable; }
 118
 119 wxEventHashTable wxEvtHandler::sm_eventHashTable(wxEvtHandler::sm_eventTable);
 120
 121 const wxEventTableEntry wxEvtHandler::sm_eventTableEntries[] =
 122     { DECLARE_EVENT_TABLE_ENTRY(wxEVT_NULL, 0, 0, (wxObjectEventFunction)NULL, NULL) };
 123
 124
 125 #ifdef __WXDEBUG__
 126 // Clear up event hash table contents or we can get problems
 127 // when C++ is cleaning up the static object
 128 class wxEventTableEntryModule: public wxModule
 129 {
 130 DECLARE_DYNAMIC_CLASS(wxEventTableEntryModule)
 131 public:
 132     wxEventTableEntryModule() {}
 133     bool OnInit() { return true; }
 134     void OnExit()
 135     {
 136         wxEventHashTable::ClearAll();
 137     }
 138 };
 139 IMPLEMENT_DYNAMIC_CLASS(wxEventTableEntryModule, wxModule)
 140 #endif
 141
 142 // ----------------------------------------------------------------------------
 143 // global variables
 144 // ----------------------------------------------------------------------------
 145
 146 // To put pending event handlers
 147 wxList *wxPendingEvents = (wxList *)NULL;
 148
 149 #if wxUSE_THREADS
 150     // protects wxPendingEvents list
 151     wxCriticalSection *wxPendingEventsLocker = (wxCriticalSection *)NULL;
 152 #endif
 153
 154 #if !WXWIN_COMPATIBILITY_EVENT_TYPES
 155
 156 // common event types are defined here, other event types are defined by the
 157 // components which use them
 158
 159 const wxEventType wxEVT_FIRST = 10000;
 160 const wxEventType wxEVT_USER_FIRST = wxEVT_FIRST + 2000;
 161
 162 DEFINE_EVENT_TYPE(wxEVT_NULL)
 163 DEFINE_EVENT_TYPE(wxEVT_IDLE)
 164 DEFINE_EVENT_TYPE(wxEVT_SOCKET)
 165
 166 #endif // !WXWIN_COMPATIBILITY_EVENT_TYPES
 167
 168 #endif // wxUSE_BASE
 169
 170 #if wxUSE_GUI
 171
 172 #if !WXWIN_COMPATIBILITY_EVENT_TYPES
 173
 174 DEFINE_EVENT_TYPE(wxEVT_COMMAND_BUTTON_CLICKED)
 175 DEFINE_EVENT_TYPE(wxEVT_COMMAND_CHECKBOX_CLICKED)
 176 DEFINE_EVENT_TYPE(wxEVT_COMMAND_CHOICE_SELECTED)
 177 DEFINE_EVENT_TYPE(wxEVT_COMMAND_LISTBOX_SELECTED)
 178 DEFINE_EVENT_TYPE(wxEVT_COMMAND_LISTBOX_DOUBLECLICKED)
 179 DEFINE_EVENT_TYPE(wxEVT_COMMAND_CHECKLISTBOX_TOGGLED)
 180 DEFINE_EVENT_TYPE(wxEVT_COMMAND_MENU_SELECTED)
 181 DEFINE_EVENT_TYPE(wxEVT_COMMAND_SLIDER_UPDATED)
 182 DEFINE_EVENT_TYPE(wxEVT_COMMAND_RADIOBOX_SELECTED)
 183 DEFINE_EVENT_TYPE(wxEVT_COMMAND_RADIOBUTTON_SELECTED)
 184 DEFINE_EVENT_TYPE(wxEVT_COMMAND_SCROLLBAR_UPDATED)
 185 DEFINE_EVENT_TYPE(wxEVT_COMMAND_VLBOX_SELECTED)
 186 DEFINE_EVENT_TYPE(wxEVT_COMMAND_COMBOBOX_SELECTED)
 187 DEFINE_EVENT_TYPE(wxEVT_COMMAND_TOOL_RCLICKED)
 188 DEFINE_EVENT_TYPE(wxEVT_COMMAND_TOOL_ENTER)
 189 DEFINE_EVENT_TYPE(wxEVT_COMMAND_SPINCTRL_UPDATED)
 190
 191 // Sockets and timers send events, too
 192 DEFINE_EVENT_TYPE(wxEVT_TIMER)
 193
 194 // Mouse event types
 195 DEFINE_EVENT_TYPE(wxEVT_LEFT_DOWN)
 196 DEFINE_EVENT_TYPE(wxEVT_LEFT_UP)
 197 DEFINE_EVENT_TYPE(wxEVT_MIDDLE_DOWN)
 198 DEFINE_EVENT_TYPE(wxEVT_MIDDLE_UP)
 199 DEFINE_EVENT_TYPE(wxEVT_RIGHT_DOWN)
 200 DEFINE_EVENT_TYPE(wxEVT_RIGHT_UP)
 201 DEFINE_EVENT_TYPE(wxEVT_MOTION)
 202 DEFINE_EVENT_TYPE(wxEVT_ENTER_WINDOW)
 203 DEFINE_EVENT_TYPE(wxEVT_LEAVE_WINDOW)
 204 DEFINE_EVENT_TYPE(wxEVT_LEFT_DCLICK)
 205 DEFINE_EVENT_TYPE(wxEVT_MIDDLE_DCLICK)
 206 DEFINE_EVENT_TYPE(wxEVT_RIGHT_DCLICK)
 207 DEFINE_EVENT_TYPE(wxEVT_SET_FOCUS)
 208 DEFINE_EVENT_TYPE(wxEVT_KILL_FOCUS)
 209 DEFINE_EVENT_TYPE(wxEVT_CHILD_FOCUS)
 210 DEFINE_EVENT_TYPE(wxEVT_MOUSEWHEEL)
 211
 212 // Non-client mouse events
 213 DEFINE_EVENT_TYPE(wxEVT_NC_LEFT_DOWN)
 214 DEFINE_EVENT_TYPE(wxEVT_NC_LEFT_UP)
 215 DEFINE_EVENT_TYPE(wxEVT_NC_MIDDLE_DOWN)
 216 DEFINE_EVENT_TYPE(wxEVT_NC_MIDDLE_UP)
 217 DEFINE_EVENT_TYPE(wxEVT_NC_RIGHT_DOWN)
 218 DEFINE_EVENT_TYPE(wxEVT_NC_RIGHT_UP)
 219 DEFINE_EVENT_TYPE(wxEVT_NC_MOTION)
 220 DEFINE_EVENT_TYPE(wxEVT_NC_ENTER_WINDOW)
 221 DEFINE_EVENT_TYPE(wxEVT_NC_LEAVE_WINDOW)
 222 DEFINE_EVENT_TYPE(wxEVT_NC_LEFT_DCLICK)
 223 DEFINE_EVENT_TYPE(wxEVT_NC_MIDDLE_DCLICK)
 224 DEFINE_EVENT_TYPE(wxEVT_NC_RIGHT_DCLICK)
 225
 226 // Character input event type
 227 DEFINE_EVENT_TYPE(wxEVT_CHAR)
 228 DEFINE_EVENT_TYPE(wxEVT_CHAR_HOOK)
 229 DEFINE_EVENT_TYPE(wxEVT_NAVIGATION_KEY)
 230 DEFINE_EVENT_TYPE(wxEVT_KEY_DOWN)
 231 DEFINE_EVENT_TYPE(wxEVT_KEY_UP)
 232 #if wxUSE_HOTKEY
 233 DEFINE_EVENT_TYPE(wxEVT_HOTKEY)
 234 #endif
 235
 236 // Set cursor event
 237 DEFINE_EVENT_TYPE(wxEVT_SET_CURSOR)
 238
 239 // wxScrollbar and wxSlider event identifiers
 240 DEFINE_EVENT_TYPE(wxEVT_SCROLL_TOP)
 241 DEFINE_EVENT_TYPE(wxEVT_SCROLL_BOTTOM)
 242 DEFINE_EVENT_TYPE(wxEVT_SCROLL_LINEUP)
 243 DEFINE_EVENT_TYPE(wxEVT_SCROLL_LINEDOWN)
 244 DEFINE_EVENT_TYPE(wxEVT_SCROLL_PAGEUP)
 245 DEFINE_EVENT_TYPE(wxEVT_SCROLL_PAGEDOWN)
 246 DEFINE_EVENT_TYPE(wxEVT_SCROLL_THUMBTRACK)
 247 DEFINE_EVENT_TYPE(wxEVT_SCROLL_THUMBRELEASE)
 248 DEFINE_EVENT_TYPE(wxEVT_SCROLL_ENDSCROLL)
 249
 250 // Scroll events from wxWindow
 251 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_TOP)
 252 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_BOTTOM)
 253 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_LINEUP)
 254 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_LINEDOWN)
 255 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_PAGEUP)
 256 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_PAGEDOWN)
 257 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_THUMBTRACK)
 258 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_THUMBRELEASE)
 259
 260 // System events
 261 DEFINE_EVENT_TYPE(wxEVT_SIZE)
 262 DEFINE_EVENT_TYPE(wxEVT_SIZING)
 263 DEFINE_EVENT_TYPE(wxEVT_MOVE)
 264 DEFINE_EVENT_TYPE(wxEVT_MOVING)
 265 DEFINE_EVENT_TYPE(wxEVT_CLOSE_WINDOW)
 266 DEFINE_EVENT_TYPE(wxEVT_END_SESSION)
 267 DEFINE_EVENT_TYPE(wxEVT_QUERY_END_SESSION)
 268 DEFINE_EVENT_TYPE(wxEVT_ACTIVATE_APP)
 269 DEFINE_EVENT_TYPE(wxEVT_POWER)
 270 DEFINE_EVENT_TYPE(wxEVT_ACTIVATE)
 271 DEFINE_EVENT_TYPE(wxEVT_CREATE)
 272 DEFINE_EVENT_TYPE(wxEVT_DESTROY)
 273 DEFINE_EVENT_TYPE(wxEVT_SHOW)
 274 DEFINE_EVENT_TYPE(wxEVT_ICONIZE)
 275 DEFINE_EVENT_TYPE(wxEVT_MAXIMIZE)
 276 DEFINE_EVENT_TYPE(wxEVT_MOUSE_CAPTURE_CHANGED)
 277 DEFINE_EVENT_TYPE(wxEVT_PAINT)
 278 DEFINE_EVENT_TYPE(wxEVT_ERASE_BACKGROUND)
 279 DEFINE_EVENT_TYPE(wxEVT_NC_PAINT)
 280 DEFINE_EVENT_TYPE(wxEVT_PAINT_ICON)
 281 DEFINE_EVENT_TYPE(wxEVT_MENU_OPEN)
 282 DEFINE_EVENT_TYPE(wxEVT_MENU_CLOSE)
 283 DEFINE_EVENT_TYPE(wxEVT_MENU_HIGHLIGHT)
 284 DEFINE_EVENT_TYPE(wxEVT_CONTEXT_MENU)
 285 DEFINE_EVENT_TYPE(wxEVT_SYS_COLOUR_CHANGED)
 286 DEFINE_EVENT_TYPE(wxEVT_DISPLAY_CHANGED)
 287 DEFINE_EVENT_TYPE(wxEVT_SETTING_CHANGED)
 288 DEFINE_EVENT_TYPE(wxEVT_QUERY_NEW_PALETTE)
 289 DEFINE_EVENT_TYPE(wxEVT_PALETTE_CHANGED)
 290 DEFINE_EVENT_TYPE(wxEVT_JOY_BUTTON_DOWN)
 291 DEFINE_EVENT_TYPE(wxEVT_JOY_BUTTON_UP)
 292 DEFINE_EVENT_TYPE(wxEVT_JOY_MOVE)
 293 DEFINE_EVENT_TYPE(wxEVT_JOY_ZMOVE)
 294 DEFINE_EVENT_TYPE(wxEVT_DROP_FILES)
 295 DEFINE_EVENT_TYPE(wxEVT_DRAW_ITEM)
 296 DEFINE_EVENT_TYPE(wxEVT_MEASURE_ITEM)
 297 DEFINE_EVENT_TYPE(wxEVT_COMPARE_ITEM)
 298 DEFINE_EVENT_TYPE(wxEVT_INIT_DIALOG)
 299 DEFINE_EVENT_TYPE(wxEVT_UPDATE_UI)
 300
 301 // Generic command events
 302 // Note: a click is a higher-level event than button down/up
 303 DEFINE_EVENT_TYPE(wxEVT_COMMAND_LEFT_CLICK)
 304 DEFINE_EVENT_TYPE(wxEVT_COMMAND_LEFT_DCLICK)
 305 DEFINE_EVENT_TYPE(wxEVT_COMMAND_RIGHT_CLICK)
 306 DEFINE_EVENT_TYPE(wxEVT_COMMAND_RIGHT_DCLICK)
 307 DEFINE_EVENT_TYPE(wxEVT_COMMAND_SET_FOCUS)
 308 DEFINE_EVENT_TYPE(wxEVT_COMMAND_KILL_FOCUS)
 309 DEFINE_EVENT_TYPE(wxEVT_COMMAND_ENTER)
 310
 311 // Help events
 312 DEFINE_EVENT_TYPE(wxEVT_HELP)
 313 DEFINE_EVENT_TYPE(wxEVT_DETAILED_HELP)
 314
 315 #endif // !WXWIN_COMPATIBILITY_EVENT_TYPES
 316
 317 #endif // wxUSE_GUI
 318
 319 #if wxUSE_BASE
 320
 321 // ============================================================================
 322 // implementation
 323 // ============================================================================
 324
 325 // ----------------------------------------------------------------------------
 326 // event initialization
 327 // ----------------------------------------------------------------------------
 328
 329 int wxNewEventType()
 330 {
 331     // MT-FIXME
 332     static int s_lastUsedEventType = wxEVT_FIRST;
 333
 334     return s_lastUsedEventType++;
 335 }
 336
 337 // ----------------------------------------------------------------------------
 338 // wxEvent
 339 // ----------------------------------------------------------------------------
 340
 341 /*
 342  * General wxWidgets events, covering
 343  * all interesting things that might happen (button clicking, resizing,
 344  * setting text in widgets, etc.).
 345  *
 346  * For each completely new event type, derive a new event class.
 347  *
 348  */
 349
 350 wxEvent::wxEvent(int theId, wxEventType commandType )
 351 {
 352     m_eventType = commandType;
 353     m_eventObject = (wxObject *) NULL;
 354     m_timeStamp = 0;
 355     m_id = theId;
 356     m_skipped = false;
 357     m_callbackUserData = (wxObject *) NULL;
 358     m_isCommandEvent = false;
 359     m_propagationLevel = wxEVENT_PROPAGATE_NONE;
 360 }
 361
 362 wxEvent::wxEvent(const wxEvent &src)
 363     : wxObject()
 364     , m_eventObject(src.m_eventObject)
 365     , m_eventType(src.m_eventType)
 366     , m_timeStamp(src.m_timeStamp)
 367     , m_id(src.m_id)
 368     , m_callbackUserData(src.m_callbackUserData)
 369     , m_propagationLevel(src.m_propagationLevel)
 370     , m_skipped(src.m_skipped)
 371     , m_isCommandEvent(src.m_isCommandEvent)
 372 {
 373 }
 374
 375 #endif // wxUSE_BASE
 376
 377 #if wxUSE_GUI
 378
 379 /*
 380  * Command events
 381  *
 382  */
 383
 384 #ifdef __VISUALC__
 385     // 'this' : used in base member initializer list (for m_commandString)
 386     #pragma warning(disable:4355)
 387 #endif
 388
 389 wxCommandEvent::wxCommandEvent(wxEventType commandType, int theId)
 390               : wxEvent(theId, commandType)
 391 #if WXWIN_COMPATIBILITY_2_4
 392               , m_commandString(this)
 393 #endif
 394 {
 395     m_clientData = (char *) NULL;
 396     m_clientObject = (wxClientData *) NULL;
 397     m_extraLong = 0;
 398     m_commandInt = 0;
 399     m_isCommandEvent = true;
 400
 401     // the command events are propagated upwards by default
 402     m_propagationLevel = wxEVENT_PROPAGATE_MAX;
 403 }
 404
 405 #ifdef __VISUALC__
 406     #pragma warning(default:4355)
 407 #endif
 408
 409 wxString wxCommandEvent::GetString() const
 410 {
 411     if(m_eventType != wxEVT_COMMAND_TEXT_UPDATED || !m_eventObject)
 412         return m_cmdString;
 413     else
 414     {
 415 #if wxUSE_TEXTCTRL
 416         wxTextCtrl *txt = wxDynamicCast(m_eventObject, wxTextCtrl);
 417         if(txt)
 418             return txt->GetValue();
 419         else
 420 #endif // wxUSE_TEXTCTRL
 421             return m_cmdString;
 422     }
 423 }
 424
 425 /*
 426  * UI update events
 427  */
 428
 429 #if wxUSE_LONGLONG
 430 wxLongLong wxUpdateUIEvent::sm_lastUpdate = 0;
 431 #endif
 432
 433 long wxUpdateUIEvent::sm_updateInterval = 0;
 434
 435 wxUpdateUIMode wxUpdateUIEvent::sm_updateMode = wxUPDATE_UI_PROCESS_ALL;
 436
 437 // Can we update?
 438 bool wxUpdateUIEvent::CanUpdate(wxWindowBase *win)
 439 {
 440     // Don't update if we've switched global updating off
 441     // and this window doesn't support updates.
 442     if (win &&
 443        (GetMode() == wxUPDATE_UI_PROCESS_SPECIFIED &&
 444        ((win->GetExtraStyle() & wxWS_EX_PROCESS_UI_UPDATES) == 0)))
 445         return false;
 446
 447     if (sm_updateInterval == -1)
 448         return false;
 449
 450     if (sm_updateInterval == 0)
 451         return true;
 452
 453 #if wxUSE_STOPWATCH && wxUSE_LONGLONG
 454     wxLongLong now = wxGetLocalTimeMillis();
 455     if (now > (sm_lastUpdate + sm_updateInterval))
 456     {
 457         return true;
 458     }
 459
 460     return false;
 461 #else
 462     // If we don't have wxStopWatch or wxLongLong, we
 463     // should err on the safe side and update now anyway.
 464     return true;
 465 #endif
 466 }
 467
 468 // Reset the update time to provide a delay until the next
 469 // time we should update
 470 void wxUpdateUIEvent::ResetUpdateTime()
 471 {
 472 #if wxUSE_STOPWATCH && wxUSE_LONGLONG
 473     if (sm_updateInterval > 0)
 474     {
 475         wxLongLong now = wxGetLocalTimeMillis();
 476         if (now > (sm_lastUpdate + sm_updateInterval))
 477         {
 478             sm_lastUpdate = now;
 479         }
 480     }
 481 #endif
 482 }
 483
 484 /*
 485  * Idle events
 486  */
 487
 488 wxIdleMode wxIdleEvent::sm_idleMode = wxIDLE_PROCESS_ALL;
 489
 490 // Can we send an idle event?
 491 bool wxIdleEvent::CanSend(wxWindow* win)
 492 {
 493     // Don't update if we've switched global updating off
 494     // and this window doesn't support updates.
 495     if (win &&
 496        (GetMode() == wxIDLE_PROCESS_SPECIFIED &&
 497        ((win->GetExtraStyle() & wxWS_EX_PROCESS_IDLE) == 0)))
 498         return false;
 499
 500     return true;
 501 }
 502
 503 /*
 504  * Scroll events
 505  */
 506
 507 wxScrollEvent::wxScrollEvent(wxEventType commandType,
 508                              int id,
 509                              int pos,
 510                              int orient)
 511     : wxCommandEvent(commandType, id)
 512 {
 513     m_extraLong = orient;
 514     m_commandInt = pos;
 515 }
 516
 517 /*
 518  * ScrollWin events
 519  */
 520
 521 wxScrollWinEvent::wxScrollWinEvent(wxEventType commandType,
 522                                    int pos,
 523                                    int orient)
 524 {
 525     m_eventType = commandType;
 526     m_extraLong = orient;
 527     m_commandInt = pos;
 528 }
 529
 530 /*
 531  * Mouse events
 532  *
 533  */
 534
 535 wxMouseEvent::wxMouseEvent(wxEventType commandType)
 536 {
 537     m_eventType = commandType;
 538     m_metaDown = false;
 539     m_altDown = false;
 540     m_controlDown = false;
 541     m_shiftDown = false;
 542     m_leftDown = false;
 543     m_rightDown = false;
 544     m_middleDown = false;
 545     m_x = 0;
 546     m_y = 0;
 547     m_wheelRotation = 0;
 548     m_wheelDelta = 0;
 549     m_linesPerAction = 0;
 550 }
 551
 552 void wxMouseEvent::Assign(const wxMouseEvent& event)
 553 {
 554     m_eventType = event.m_eventType;
 555
 556     m_x = event.m_x;
 557     m_y = event.m_y;
 558
 559     m_leftDown = event.m_leftDown;
 560     m_middleDown = event.m_middleDown;
 561     m_rightDown = event.m_rightDown;
 562
 563     m_controlDown = event.m_controlDown;
 564     m_shiftDown = event.m_shiftDown;
 565     m_altDown = event.m_altDown;
 566     m_metaDown = event.m_metaDown;
 567
 568     m_wheelRotation = event.m_wheelRotation;
 569     m_wheelDelta = event.m_wheelDelta;
 570     m_linesPerAction = event.m_linesPerAction;
 571 }
 572
 573 // return true if was a button dclick event
 574 bool wxMouseEvent::ButtonDClick(int but) const
 575 {
 576     switch (but)
 577     {
 578         default:
 579             wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::ButtonDClick"));
 580             // fall through
 581
 582         case wxMOUSE_BTN_ANY:
 583             return (LeftDClick() || MiddleDClick() || RightDClick());
 584
 585         case wxMOUSE_BTN_LEFT:
 586             return LeftDClick();
 587
 588         case wxMOUSE_BTN_MIDDLE:
 589             return MiddleDClick();
 590
 591         case wxMOUSE_BTN_RIGHT:
 592             return RightDClick();
 593     }
 594 }
 595
 596 // return true if was a button down event
 597 bool wxMouseEvent::ButtonDown(int but) const
 598 {
 599     switch (but)
 600     {
 601         default:
 602             wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::ButtonDown"));
 603             // fall through
 604
 605         case wxMOUSE_BTN_ANY:
 606             return (LeftDown() || MiddleDown() || RightDown());
 607
 608         case wxMOUSE_BTN_LEFT:
 609             return LeftDown();
 610
 611         case wxMOUSE_BTN_MIDDLE:
 612             return MiddleDown();
 613
 614         case wxMOUSE_BTN_RIGHT:
 615             return RightDown();
 616     }
 617 }
 618
 619 // return true if was a button up event
 620 bool wxMouseEvent::ButtonUp(int but) const
 621 {
 622     switch (but)
 623     {
 624         default:
 625             wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::ButtonUp"));
 626             // fall through
 627
 628         case wxMOUSE_BTN_ANY:
 629             return (LeftUp() || MiddleUp() || RightUp());
 630
 631         case wxMOUSE_BTN_LEFT:
 632             return LeftUp();
 633
 634         case wxMOUSE_BTN_MIDDLE:
 635             return MiddleUp();
 636
 637         case wxMOUSE_BTN_RIGHT:
 638             return RightUp();
 639     }
 640 }
 641
 642 // return true if the given button is currently changing state
 643 bool wxMouseEvent::Button(int but) const
 644 {
 645     switch (but)
 646     {
 647         default:
 648             wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::Button"));
 649             // fall through
 650
 651         case wxMOUSE_BTN_ANY:
 652             return ButtonUp(wxMOUSE_BTN_ANY) ||
 653                     ButtonDown(wxMOUSE_BTN_ANY) ||
 654                         ButtonDClick(wxMOUSE_BTN_ANY);
 655
 656         case wxMOUSE_BTN_LEFT:
 657             return LeftDown() || LeftUp() || LeftDClick();
 658
 659         case wxMOUSE_BTN_MIDDLE:
 660             return MiddleDown() || MiddleUp() || MiddleDClick();
 661
 662         case wxMOUSE_BTN_RIGHT:
 663             return RightDown() || RightUp() || RightDClick();
 664     }
 665 }
 666
 667 bool wxMouseEvent::ButtonIsDown(int but) const
 668 {
 669     switch (but)
 670     {
 671         default:
 672             wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::ButtonIsDown"));
 673             // fall through
 674
 675         case wxMOUSE_BTN_ANY:
 676             return LeftIsDown() || MiddleIsDown() || RightIsDown();
 677
 678         case wxMOUSE_BTN_LEFT:
 679             return LeftIsDown();
 680
 681         case wxMOUSE_BTN_MIDDLE:
 682             return MiddleIsDown();
 683
 684         case wxMOUSE_BTN_RIGHT:
 685             return RightIsDown();
 686     }
 687 }
 688
 689 int wxMouseEvent::GetButton() const
 690 {
 691     for ( int i = 1; i <= 3; i++ )
 692     {
 693         if ( Button(i) )
 694         {
 695             return i;
 696         }
 697     }
 698
 699     return wxMOUSE_BTN_NONE;
 700 }
 701
 702 // Find the logical position of the event given the DC
 703 wxPoint wxMouseEvent::GetLogicalPosition(const wxDC& dc) const
 704 {
 705     wxPoint pt(dc.DeviceToLogicalX(m_x), dc.DeviceToLogicalY(m_y));
 706     return pt;
 707 }
 708
 709
 710 /*
 711  * Keyboard event
 712  *
 713  */
 714
 715 wxKeyEvent::wxKeyEvent(wxEventType type)
 716 {
 717     m_eventType = type;
 718     m_shiftDown = false;
 719     m_controlDown = false;
 720     m_metaDown = false;
 721     m_altDown = false;
 722     m_keyCode = 0;
 723     m_scanCode = 0;
 724 #if wxUSE_UNICODE
 725     m_uniChar = 0;
 726 #endif
 727 }
 728
 729 wxKeyEvent::wxKeyEvent(const wxKeyEvent& evt)
 730     : wxEvent(evt)
 731 {
 732     m_x = evt.m_x;
 733     m_y = evt.m_y;
 734
 735     m_keyCode = evt.m_keyCode;
 736
 737     m_controlDown = evt.m_controlDown;
 738     m_shiftDown = evt.m_shiftDown;
 739     m_altDown = evt.m_altDown;
 740     m_metaDown = evt.m_metaDown;
 741     m_scanCode = evt.m_scanCode;
 742     m_rawCode = evt.m_rawCode;
 743     m_rawFlags = evt.m_rawFlags;
 744
 745 #if wxUSE_UNICODE
 746     m_uniChar = evt.m_uniChar;
 747 #endif
 748 }
 749
 750 long wxKeyEvent::KeyCode() const
 751 {
 752     return m_keyCode;
 753 }
 754
 755 wxWindowCreateEvent::wxWindowCreateEvent(wxWindow *win)
 756 {
 757     SetEventType(wxEVT_CREATE);
 758     SetEventObject(win);
 759 }
 760
 761 wxWindowDestroyEvent::wxWindowDestroyEvent(wxWindow *win)
 762 {
 763     SetEventType(wxEVT_DESTROY);
 764     SetEventObject(win);
 765 }
 766
 767 wxChildFocusEvent::wxChildFocusEvent(wxWindow *win)
 768                  : wxCommandEvent(wxEVT_CHILD_FOCUS)
 769 {
 770     SetEventObject(win);
 771 }
 772
 773 #endif // wxUSE_GUI
 774
 775
 776 #if wxUSE_BASE
 777
 778 // ----------------------------------------------------------------------------
 779 // wxEventHashTable
 780 // ----------------------------------------------------------------------------
 781
 782 static const int EVENT_TYPE_TABLE_INIT_SIZE = 31; // Not too big not too small...
 783
 784 wxEventHashTable* wxEventHashTable::sm_first = NULL;
 785
 786 wxEventHashTable::wxEventHashTable(const wxEventTable &table)
 787                 : m_table(table),
 788                   m_rebuildHash(true)
 789 {
 790     AllocEventTypeTable(EVENT_TYPE_TABLE_INIT_SIZE);
 791
 792     m_next = sm_first;
 793     if (m_next)
 794         m_next->m_previous = this;
 795     sm_first = this;
 796 }
 797
 798 wxEventHashTable::~wxEventHashTable()
 799 {
 800     if (m_next)
 801         m_next->m_previous = m_previous;
 802     if (m_previous)
 803         m_previous->m_next = m_next;
 804     if (sm_first == this)
 805         sm_first = m_next;
 806
 807     Clear();
 808 }
 809
 810 void wxEventHashTable::Clear()
 811 {
 812     size_t i;
 813     for(i = 0; i < m_size; i++)
 814     {
 815         EventTypeTablePointer  eTTnode = m_eventTypeTable[i];
 816         if (eTTnode)
 817         {
 818             delete eTTnode;
 819         }
 820     }
 821
 822     // Necessary in order to not invoke the
 823     // overloaded delete operator when statics are cleaned up
 824     if (m_eventTypeTable)
 825         delete[] m_eventTypeTable;
 826
 827     m_eventTypeTable = NULL;
 828     m_size = 0;
 829 }
 830
 831 // Clear all tables
 832 void wxEventHashTable::ClearAll()
 833 {
 834     wxEventHashTable* table = sm_first;
 835     while (table)
 836     {
 837         table->Clear();
 838         table = table->m_next;
 839     }
 840 }
 841
 842 bool wxEventHashTable::HandleEvent(wxEvent &event, wxEvtHandler *self)
 843 {
 844     if (m_rebuildHash)
 845     {
 846         InitHashTable();
 847         m_rebuildHash = false;
 848     }
 849
 850     if (!m_eventTypeTable)
 851         return false;
 852
 853     // Find all entries for the given event type.
 854     wxEventType eventType = event.GetEventType();
 855     const EventTypeTablePointer eTTnode = m_eventTypeTable[eventType % m_size];
 856     if (eTTnode && eTTnode->eventType == eventType)
 857     {
 858         // Now start the search for an event handler
 859         // that can handle an event with the given ID.
 860         const wxEventTableEntryPointerArray&
 861             eventEntryTable = eTTnode->eventEntryTable;
 862
 863         const size_t count = eventEntryTable.GetCount();
 864         for (size_t n = 0; n < count; n++)
 865         {
 866             if ( wxEvtHandler::
 867                     ProcessEventIfMatches(*eventEntryTable[n], self, event) )
 868             {
 869                 return true;
 870             }
 871         }
 872     }
 873
 874     return false;
 875 }
 876
 877 void wxEventHashTable::InitHashTable()
 878 {
 879     // Loop over the event tables and all its base tables.
 880     const wxEventTable *table = &m_table;
 881     while (table)
 882     {
 883         // Retrieve all valid event handler entries
 884         const wxEventTableEntry *entry = table->entries;
 885         while (entry->m_fn != 0)
 886         {
 887             // Add the event entry in the Hash.
 888             AddEntry(*entry);
 889
 890             entry++;
 891         }
 892
 893         table = table->baseTable;
 894     }
 895
 896     // Lets free some memory.
 897     size_t i;
 898     for(i = 0; i < m_size; i++)
 899     {
 900         EventTypeTablePointer  eTTnode = m_eventTypeTable[i];
 901         if (eTTnode)
 902         {
 903             eTTnode->eventEntryTable.Shrink();
 904         }
 905     }
 906 }
 907
 908 void wxEventHashTable::AddEntry(const wxEventTableEntry &entry)
 909 {
 910     // This might happen 'accidentally' as the app is exiting
 911     if (!m_eventTypeTable)
 912         return;
 913
 914     EventTypeTablePointer *peTTnode = &m_eventTypeTable[entry.m_eventType % m_size];
 915     EventTypeTablePointer  eTTnode = *peTTnode;
 916
 917     if (eTTnode)
 918     {
 919         if (eTTnode->eventType != entry.m_eventType)
 920         {
 921             // Resize the table!
 922             GrowEventTypeTable();
 923             // Try again to add it.
 924             AddEntry(entry);
 925             return;
 926         }
 927     }
 928     else
 929     {
 930         eTTnode = new EventTypeTable;
 931         eTTnode->eventType = entry.m_eventType;
 932         *peTTnode = eTTnode;
 933     }
 934
 935     // Fill all hash entries between entry.m_id and entry.m_lastId...
 936     eTTnode->eventEntryTable.Add(&entry);
 937 }
 938
 939 void wxEventHashTable::AllocEventTypeTable(size_t size)
 940 {
 941     m_eventTypeTable = new EventTypeTablePointer[size];
 942     memset((void *)m_eventTypeTable, 0, sizeof(EventTypeTablePointer)*size);
 943     m_size = size;
 944 }
 945
 946 void wxEventHashTable::GrowEventTypeTable()
 947 {
 948     size_t oldSize = m_size;
 949     EventTypeTablePointer *oldEventTypeTable = m_eventTypeTable;
 950
 951     // TODO: Search the most optimal grow sequence
 952     AllocEventTypeTable(/* GetNextPrime(oldSize) */oldSize*2+1);
 953
 954     for ( size_t i = 0; i < oldSize; /* */ )
 955     {
 956         EventTypeTablePointer  eTToldNode = oldEventTypeTable[i];
 957         if (eTToldNode)
 958         {
 959             EventTypeTablePointer *peTTnode = &m_eventTypeTable[eTToldNode->eventType % m_size];
 960             EventTypeTablePointer  eTTnode = *peTTnode;
 961
 962             // Check for collision, we don't want any.
 963             if (eTTnode)
 964             {
 965                 GrowEventTypeTable();
 966                 continue; // Don't increment the counter,
 967                           // as we still need to add this element.
 968             }
 969             else
 970             {
 971                 // Get the old value and put it in the new table.
 972                 *peTTnode = oldEventTypeTable[i];
 973             }
 974         }
 975
 976         i++;
 977     }
 978
 979     delete[] oldEventTypeTable;
 980 }
 981
 982
 983 // ----------------------------------------------------------------------------
 984 // wxEvtHandler
 985 // ----------------------------------------------------------------------------
 986
 987 /*
 988  * Event handler
 989  */
 990
 991 wxEvtHandler::wxEvtHandler()
 992 {
 993     m_nextHandler = (wxEvtHandler *) NULL;
 994     m_previousHandler = (wxEvtHandler *) NULL;
 995     m_enabled = true;
 996     m_dynamicEvents = (wxList *) NULL;
 997     m_pendingEvents = (wxList *) NULL;
 998 #if wxUSE_THREADS
 999 #  if !defined(__VISAGECPP__)
1000     m_eventsLocker = new wxCriticalSection;
1001 #  endif
1002 #endif
1003     // no client data (yet)
1004     m_clientData = NULL;
1005     m_clientDataType = wxClientData_None;
1006 }
1007
1008 wxEvtHandler::~wxEvtHandler()
1009 {
1010     // Takes itself out of the list of handlers
1011     if (m_previousHandler)
1012         m_previousHandler->m_nextHandler = m_nextHandler;
1013
1014     if (m_nextHandler)
1015         m_nextHandler->m_previousHandler = m_previousHandler;
1016
1017     if (m_dynamicEvents)
1018     {
1019         wxList::iterator it = m_dynamicEvents->begin(),
1020                          en = m_dynamicEvents->end();
1021         for (;it != en; ++it)
1022         {
1023 #if WXWIN_COMPATIBILITY_EVENT_TYPES
1024             wxEventTableEntry *entry = (wxEventTableEntry*)*it;
1025 #else // !WXWIN_COMPATIBILITY_EVENT_TYPES
1026             wxDynamicEventTableEntry *entry = (wxDynamicEventTableEntry*)*it;
1027 #endif // WXWIN_COMPATIBILITY_EVENT_TYPES/!WXWIN_COMPATIBILITY_EVENT_TYPES
1028
1029             if (entry->m_callbackUserData)
1030                 delete entry->m_callbackUserData;
1031             delete entry;
1032         }
1033         delete m_dynamicEvents;
1034     };
1035
1036     delete m_pendingEvents;
1037
1038 #if wxUSE_THREADS
1039 #  if !defined(__VISAGECPP__)
1040     delete m_eventsLocker;
1041 #  endif
1042
1043     // Remove us from wxPendingEvents if necessary.
1044     if(wxPendingEventsLocker)
1045         wxENTER_CRIT_SECT(*wxPendingEventsLocker);
1046     if ( wxPendingEvents ) {
1047         wxPendingEvents->DeleteObject(this);
1048     }
1049     if(wxPendingEventsLocker)
1050         wxLEAVE_CRIT_SECT(*wxPendingEventsLocker);
1051 #endif
1052
1053     // we only delete object data, not untyped
1054     if ( m_clientDataType == wxClientData_Object )
1055         delete m_clientObject;
1056 }
1057
1058 #if wxUSE_THREADS
1059
1060 bool wxEvtHandler::ProcessThreadEvent(wxEvent& event)
1061 {
1062     // check that we are really in a child thread
1063     wxASSERT_MSG( !wxThread::IsMain(),
1064                   wxT("use ProcessEvent() in main thread") );
1065
1066     AddPendingEvent(event);
1067
1068     return true;
1069 }
1070
1071 void wxEvtHandler::ClearEventLocker()
1072 {
1073 #if !defined(__VISAGECPP__)
1074     delete m_eventsLocker;
1075     m_eventsLocker = NULL;
1076 #endif
1077 };
1078
1079 #endif // wxUSE_THREADS
1080
1081 void wxEvtHandler::AddPendingEvent(wxEvent& event)
1082 {
1083     // 1) Add event to list of pending events of this event handler
1084
1085     wxEvent *eventCopy = event.Clone();
1086
1087     // we must be able to copy the events here so the event class must
1088     // implement Clone() properly instead of just providing a NULL stab for it
1089     wxCHECK_RET( eventCopy,
1090                  _T("events of this type aren't supposed to be posted") );
1091
1092 #if defined(__VISAGECPP__)
1093     wxENTER_CRIT_SECT( m_eventsLocker);
1094 #else
1095     wxENTER_CRIT_SECT( *m_eventsLocker);
1096 #endif
1097
1098     if ( !m_pendingEvents )
1099       m_pendingEvents = new wxList;
1100
1101     m_pendingEvents->Append(eventCopy);
1102
1103 #if defined(__VISAGECPP__)
1104     wxLEAVE_CRIT_SECT( m_eventsLocker);
1105 #else
1106     wxLEAVE_CRIT_SECT( *m_eventsLocker);
1107 #endif
1108
1109     // 2) Add this event handler to list of event handlers that
1110     //    have pending events.
1111
1112     wxENTER_CRIT_SECT(*wxPendingEventsLocker);
1113
1114     if ( !wxPendingEvents )
1115         wxPendingEvents = new wxList;
1116     wxPendingEvents->Append(this);
1117
1118     wxLEAVE_CRIT_SECT(*wxPendingEventsLocker);
1119
1120     // 3) Inform the system that new pending events are somwehere,
1121     //    and that these should be processed in idle time.
1122     wxWakeUpIdle();
1123 }
1124
1125 void wxEvtHandler::ProcessPendingEvents()
1126 {
1127     // this method is only called by wxApp if this handler does have pending
1128     // events
1129     wxCHECK_RET( m_pendingEvents,
1130                  wxT("Please call wxApp::ProcessPendingEvents() instead") );
1131
1132 #if defined(__VISAGECPP__)
1133     wxENTER_CRIT_SECT( m_eventsLocker);
1134 #else
1135     wxENTER_CRIT_SECT( *m_eventsLocker);
1136 #endif
1137
1138     // remember last event to process during this iteration
1139     wxList::compatibility_iterator lastPendingNode = m_pendingEvents->GetLast();
1140
1141     wxList::compatibility_iterator node = m_pendingEvents->GetFirst();
1142     while ( node )
1143     {
1144         wxEvent *event = (wxEvent *)node->GetData();
1145         m_pendingEvents->Erase(node);
1146
1147         // In ProcessEvent, new events might get added and
1148         // we can safely leave the crtical section here.
1149 #if defined(__VISAGECPP__)
1150         wxLEAVE_CRIT_SECT( m_eventsLocker);
1151 #else
1152         wxLEAVE_CRIT_SECT( *m_eventsLocker);
1153 #endif
1154         ProcessEvent(*event);
1155         delete event;
1156 #if defined(__VISAGECPP__)
1157         wxENTER_CRIT_SECT( m_eventsLocker);
1158 #else
1159         wxENTER_CRIT_SECT( *m_eventsLocker);
1160 #endif
1161
1162         // leave the loop once we have processed all events that were present
1163         // at the start of ProcessPendingEvents because otherwise we could get
1164         // into infinite loop if the pending event handler execution resulted
1165         // in another event being posted
1166         if ( node == lastPendingNode )
1167             break;
1168
1169         node = m_pendingEvents->GetFirst();
1170     }
1171
1172 #if defined(__VISAGECPP__)
1173     wxLEAVE_CRIT_SECT( m_eventsLocker);
1174 #else
1175     wxLEAVE_CRIT_SECT( *m_eventsLocker);
1176 #endif
1177 }
1178
1179 /*
1180  * Event table stuff
1181  */
1182 /* static */ bool
1183 wxEvtHandler::ProcessEventIfMatches(const wxEventTableEntryBase& entry,
1184                                     wxEvtHandler *handler,
1185                                     wxEvent& event)
1186 {
1187     int tableId1 = entry.m_id,
1188         tableId2 = entry.m_lastId;
1189
1190     // match only if the event type is the same and the id is either -1 in
1191     // the event table (meaning "any") or the event id matches the id
1192     // specified in the event table either exactly or by falling into
1193     // range between first and last
1194     if ((tableId1 == wxID_ANY) ||
1195         (tableId2 == wxID_ANY && tableId1 == event.GetId()) ||
1196         (tableId2 != wxID_ANY &&
1197          (event.GetId() >= tableId1 && event.GetId() <= tableId2)))
1198     {
1199         event.Skip(false);
1200         event.m_callbackUserData = entry.m_callbackUserData;
1201
1202 #if wxUSE_EXCEPTIONS
1203         if ( wxTheApp )
1204         {
1205             // call the handler via wxApp method which allows the user to catch
1206             // any exceptions which may be thrown by any handler in the program
1207             // in one place
1208             wxTheApp->HandleEvent(handler, (wxEventFunction)entry.m_fn, event);
1209         }
1210         else
1211 #endif // wxUSE_EXCEPTIONS
1212         {
1213             // no need for an extra virtual function call
1214             (handler->*((wxEventFunction) (entry.m_fn)))(event);
1215         }
1216
1217         if (!event.GetSkipped())
1218             return true;
1219     }
1220
1221     return false;
1222 }
1223
1224 bool wxEvtHandler::TryParent(wxEvent& event)
1225 {
1226     if ( wxTheApp && (this != wxTheApp) )
1227     {
1228         // Special case: don't pass wxEVT_IDLE to wxApp, since it'll always
1229         // swallow it. wxEVT_IDLE is sent explicitly to wxApp so it will be
1230         // processed appropriately via SearchEventTable.
1231         if ( event.GetEventType() != wxEVT_IDLE )
1232         {
1233             if ( wxTheApp->ProcessEvent(event) )
1234                 return true;
1235         }
1236     }
1237
1238     return false;
1239 }
1240
1241 bool wxEvtHandler::ProcessEvent(wxEvent& event)
1242 {
1243     // allow the application to hook into event processing
1244     if ( wxTheApp )
1245     {
1246         int rc = wxTheApp->FilterEvent(event);
1247         if ( rc != -1 )
1248         {
1249             wxASSERT_MSG( rc == 1 || rc == 0,
1250                           _T("unexpected wxApp::FilterEvent return value") );
1251
1252             return rc != 0;
1253         }
1254         //else: proceed normally
1255     }
1256
1257     // An event handler can be enabled or disabled
1258     if ( GetEvtHandlerEnabled() )
1259     {
1260         // if we have a validator, it has higher priority than our own event
1261         // table
1262         if ( TryValidator(event) )
1263             return true;
1264
1265         // Handle per-instance dynamic event tables first
1266         if ( m_dynamicEvents && SearchDynamicEventTable(event) )
1267             return true;
1268
1269         // Then static per-class event tables
1270         if ( GetEventHashTable().HandleEvent(event, this) )
1271             return true;
1272     }
1273
1274     // Try going down the event handler chain
1275     if ( GetNextHandler() )
1276     {
1277         if ( GetNextHandler()->ProcessEvent(event) )
1278             return true;
1279     }
1280
1281     // Finally propagate the event upwards the window chain and/or to the
1282     // application object as necessary
1283     return TryParent(event);
1284 }
1285
1286
1287 bool wxEvtHandler::SearchEventTable(wxEventTable& table, wxEvent& event)
1288 {
1289     const wxEventType eventType = event.GetEventType();
1290     for ( int i = 0; table.entries[i].m_fn != 0; i++ )
1291     {
1292         const wxEventTableEntry& entry = table.entries[i];
1293         if ( eventType == entry.m_eventType )
1294         {
1295             if ( ProcessEventIfMatches(entry, this, event) )
1296                 return true;
1297         }
1298     }
1299
1300     return false;
1301 }
1302
1303 void wxEvtHandler::Connect( int id, int lastId,
1304                             int eventType,
1305                             wxObjectEventFunction func,
1306                             wxObject *userData,
1307                             wxEvtHandler* eventSink )
1308 {
1309 #if WXWIN_COMPATIBILITY_EVENT_TYPES
1310     wxEventTableEntry *entry = new wxEventTableEntry;
1311     entry->m_eventType = eventType;
1312     entry->m_id = id;
1313     entry->m_lastId = lastId;
1314     entry->m_fn = func;
1315     entry->m_callbackUserData = userData;
1316 #else // !WXWIN_COMPATIBILITY_EVENT_TYPES
1317     wxDynamicEventTableEntry *entry =
1318         new wxDynamicEventTableEntry(eventType, id, lastId, func, userData, eventSink);
1319 #endif // WXWIN_COMPATIBILITY_EVENT_TYPES/!WXWIN_COMPATIBILITY_EVENT_TYPES
1320
1321     if (!m_dynamicEvents)
1322         m_dynamicEvents = new wxList;
1323
1324     // Insert at the front of the list so most recent additions are found first
1325     m_dynamicEvents->Insert( (wxObject*) entry );
1326 }
1327
1328 bool wxEvtHandler::Disconnect( int id, int lastId, wxEventType eventType,
1329                   wxObjectEventFunction func,
1330                   wxObject *userData,
1331                   wxEvtHandler* eventSink )
1332 {
1333     if (!m_dynamicEvents)
1334         return false;
1335
1336     wxList::compatibility_iterator node = m_dynamicEvents->GetFirst();
1337     while (node)
1338     {
1339 #if WXWIN_COMPATIBILITY_EVENT_TYPES
1340             wxEventTableEntry *entry = (wxEventTableEntry*)node->GetData();
1341 #else // !WXWIN_COMPATIBILITY_EVENT_TYPES
1342             wxDynamicEventTableEntry *entry = (wxDynamicEventTableEntry*)node->GetData();
1343 #endif // WXWIN_COMPATIBILITY_EVENT_TYPES/!WXWIN_COMPATIBILITY_EVENT_TYPES
1344
1345         if ((entry->m_id == id) &&
1346             ((entry->m_lastId == lastId) || (lastId == wxID_ANY)) &&
1347             ((entry->m_eventType == eventType) || (eventType == wxEVT_NULL)) &&
1348             ((entry->m_fn == func) || (func == (wxObjectEventFunction)NULL)) &&
1349             ((entry->m_eventSink == eventSink) || (eventSink == (wxEvtHandler*)NULL)) &&
1350             ((entry->m_callbackUserData == userData) || (userData == (wxObject*)NULL)))
1351         {
1352             if (entry->m_callbackUserData)
1353                 delete entry->m_callbackUserData;
1354             m_dynamicEvents->Erase( node );
1355             delete entry;
1356             return true;
1357         }
1358         node = node->GetNext();
1359     }
1360     return false;
1361 }
1362
1363 bool wxEvtHandler::SearchDynamicEventTable( wxEvent& event )
1364 {
1365     wxCHECK_MSG( m_dynamicEvents, false,
1366                  wxT("caller should check that we have dynamic events") );
1367
1368     wxList::compatibility_iterator node = m_dynamicEvents->GetFirst();
1369     while (node)
1370     {
1371 #if WXWIN_COMPATIBILITY_EVENT_TYPES
1372         wxEventTableEntry *entry = (wxEventTableEntry*)node->GetData();
1373 #else // !WXWIN_COMPATIBILITY_EVENT_TYPES
1374         wxDynamicEventTableEntry *entry = (wxDynamicEventTableEntry*)node->GetData();
1375 #endif // WXWIN_COMPATIBILITY_EVENT_TYPES/!WXWIN_COMPATIBILITY_EVENT_TYPES
1376
1377         if ((event.GetEventType() == entry->m_eventType) && (entry->m_fn != 0))
1378         {
1379             wxEvtHandler *handler =
1380 #if !WXWIN_COMPATIBILITY_EVENT_TYPES
1381                                     entry->m_eventSink ? entry->m_eventSink
1382                                                        :
1383 #endif
1384                                                          this;
1385
1386             if ( ProcessEventIfMatches(*entry, handler, event) )
1387             {
1388                 return true;
1389             }
1390         }
1391
1392         node = node->GetNext();
1393     }
1394
1395     return false;
1396 };
1397
1398 void wxEvtHandler::DoSetClientObject( wxClientData *data )
1399 {
1400     wxASSERT_MSG( m_clientDataType != wxClientData_Void,
1401                   wxT("can't have both object and void client data") );
1402
1403     if ( m_clientObject )
1404         delete m_clientObject;
1405
1406     m_clientObject = data;
1407     m_clientDataType = wxClientData_Object;
1408 }
1409
1410 wxClientData *wxEvtHandler::DoGetClientObject() const
1411 {
1412     // it's not an error to call GetClientObject() on a window which doesn't
1413     // have client data at all - NULL will be returned
1414     wxASSERT_MSG( m_clientDataType != wxClientData_Void,
1415                   wxT("this window doesn't have object client data") );
1416
1417     return m_clientObject;
1418 }
1419
1420 void wxEvtHandler::DoSetClientData( void *data )
1421 {
1422     wxASSERT_MSG( m_clientDataType != wxClientData_Object,
1423                   wxT("can't have both object and void client data") );
1424
1425     m_clientData = data;
1426     m_clientDataType = wxClientData_Void;
1427 }
1428
1429 void *wxEvtHandler::DoGetClientData() const
1430 {
1431     // it's not an error to call GetClientData() on a window which doesn't have
1432     // client data at all - NULL will be returned
1433     wxASSERT_MSG( m_clientDataType != wxClientData_Object,
1434                   wxT("this window doesn't have void client data") );
1435
1436     return m_clientData;
1437 }
1438
1439 #endif // wxUSE_BASE
1440
1441 #if wxUSE_GUI
1442
1443 // Find a window with the focus, that is also a descendant of the given window.
1444 // This is used to determine the window to initially send commands to.
1445 wxWindow* wxFindFocusDescendant(wxWindow* ancestor)
1446 {
1447     // Process events starting with the window with the focus, if any.
1448     wxWindow* focusWin = wxWindow::FindFocus();
1449     wxWindow* win = focusWin;
1450
1451     // Check if this is a descendant of this frame.
1452     // If not, win will be set to NULL.
1453     while (win)
1454     {
1455         if (win == ancestor)
1456             break;
1457         else
1458             win = win->GetParent();
1459     }
1460     if (win == (wxWindow*) NULL)
1461         focusWin = (wxWindow*) NULL;
1462
1463     return focusWin;
1464 }
1465
1466 #endif // wxUSE_GUI