src/common/event.cpp

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