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 #include "wx/event.h"
  28 #include "wx/eventfilter.h"
  29 #include "wx/evtloop.h"
  30
  31 #ifndef WX_PRECOMP
  32     #include "wx/list.h"
  33     #include "wx/log.h"
  34     #include "wx/app.h"
  35     #include "wx/utils.h"
  36     #include "wx/stopwatch.h"
  37     #include "wx/module.h"
  38
  39     #if wxUSE_GUI
  40         #include "wx/window.h"
  41         #include "wx/control.h"
  42         #include "wx/dc.h"
  43         #include "wx/spinbutt.h"
  44         #include "wx/textctrl.h"
  45         #include "wx/validate.h"
  46     #endif // wxUSE_GUI
  47 #endif
  48
  49 #include "wx/thread.h"
  50
  51 #if wxUSE_BASE
  52     #include "wx/scopedptr.h"
  53
  54     wxDECLARE_SCOPED_PTR(wxEvent, wxEventPtr)
  55     wxDEFINE_SCOPED_PTR(wxEvent, wxEventPtr)
  56 #endif // wxUSE_BASE
  57
  58 // ----------------------------------------------------------------------------
  59 // wxWin macros
  60 // ----------------------------------------------------------------------------
  61
  62 #if wxUSE_BASE
  63     IMPLEMENT_DYNAMIC_CLASS(wxEvtHandler, wxObject)
  64     IMPLEMENT_ABSTRACT_CLASS(wxEvent, wxObject)
  65     IMPLEMENT_DYNAMIC_CLASS(wxIdleEvent, wxEvent)
  66     IMPLEMENT_DYNAMIC_CLASS(wxThreadEvent, wxEvent)
  67 #endif // wxUSE_BASE
  68
  69 #if wxUSE_GUI
  70     IMPLEMENT_DYNAMIC_CLASS(wxCommandEvent, wxEvent)
  71     IMPLEMENT_DYNAMIC_CLASS(wxNotifyEvent, wxCommandEvent)
  72     IMPLEMENT_DYNAMIC_CLASS(wxScrollEvent, wxCommandEvent)
  73     IMPLEMENT_DYNAMIC_CLASS(wxScrollWinEvent, wxEvent)
  74     IMPLEMENT_DYNAMIC_CLASS(wxMouseEvent, wxEvent)
  75     IMPLEMENT_DYNAMIC_CLASS(wxKeyEvent, wxEvent)
  76     IMPLEMENT_DYNAMIC_CLASS(wxSizeEvent, wxEvent)
  77     IMPLEMENT_DYNAMIC_CLASS(wxPaintEvent, wxEvent)
  78     IMPLEMENT_DYNAMIC_CLASS(wxNcPaintEvent, wxEvent)
  79     IMPLEMENT_DYNAMIC_CLASS(wxEraseEvent, wxEvent)
  80     IMPLEMENT_DYNAMIC_CLASS(wxMoveEvent, wxEvent)
  81     IMPLEMENT_DYNAMIC_CLASS(wxFocusEvent, wxEvent)
  82     IMPLEMENT_DYNAMIC_CLASS(wxChildFocusEvent, wxCommandEvent)
  83     IMPLEMENT_DYNAMIC_CLASS(wxCloseEvent, wxEvent)
  84     IMPLEMENT_DYNAMIC_CLASS(wxShowEvent, wxEvent)
  85     IMPLEMENT_DYNAMIC_CLASS(wxMaximizeEvent, wxEvent)
  86     IMPLEMENT_DYNAMIC_CLASS(wxIconizeEvent, wxEvent)
  87     IMPLEMENT_DYNAMIC_CLASS(wxMenuEvent, wxEvent)
  88     IMPLEMENT_DYNAMIC_CLASS(wxJoystickEvent, wxEvent)
  89     IMPLEMENT_DYNAMIC_CLASS(wxDropFilesEvent, wxEvent)
  90     IMPLEMENT_DYNAMIC_CLASS(wxActivateEvent, wxEvent)
  91     IMPLEMENT_DYNAMIC_CLASS(wxInitDialogEvent, wxEvent)
  92     IMPLEMENT_DYNAMIC_CLASS(wxSetCursorEvent, wxEvent)
  93     IMPLEMENT_DYNAMIC_CLASS(wxSysColourChangedEvent, wxEvent)
  94     IMPLEMENT_DYNAMIC_CLASS(wxDisplayChangedEvent, wxEvent)
  95     IMPLEMENT_DYNAMIC_CLASS(wxUpdateUIEvent, wxCommandEvent)
  96     IMPLEMENT_DYNAMIC_CLASS(wxNavigationKeyEvent, wxEvent)
  97     IMPLEMENT_DYNAMIC_CLASS(wxPaletteChangedEvent, wxEvent)
  98     IMPLEMENT_DYNAMIC_CLASS(wxQueryNewPaletteEvent, wxEvent)
  99     IMPLEMENT_DYNAMIC_CLASS(wxWindowCreateEvent, wxEvent)
 100     IMPLEMENT_DYNAMIC_CLASS(wxWindowDestroyEvent, wxEvent)
 101     IMPLEMENT_DYNAMIC_CLASS(wxHelpEvent, wxCommandEvent)
 102     IMPLEMENT_DYNAMIC_CLASS(wxContextMenuEvent, wxCommandEvent)
 103     IMPLEMENT_DYNAMIC_CLASS(wxMouseCaptureChangedEvent, wxEvent)
 104     IMPLEMENT_DYNAMIC_CLASS(wxMouseCaptureLostEvent, wxEvent)
 105     IMPLEMENT_DYNAMIC_CLASS(wxClipboardTextEvent, wxCommandEvent)
 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     { wxDECLARE_EVENT_TABLE_TERMINATOR() };
 123
 124
 125 // wxUSE_MEMORY_TRACING considers memory freed from the static objects dtors
 126 // leaked, so we need to manually clean up all event tables before checking for
 127 // the memory leaks when using it, however this breaks re-initializing the
 128 // library (i.e. repeated calls to wxInitialize/wxUninitialize) because the
 129 // event tables won't be rebuilt the next time, so disable this by default
 130 #if wxUSE_MEMORY_TRACING
 131
 132 class wxEventTableEntryModule: public wxModule
 133 {
 134 public:
 135     wxEventTableEntryModule() { }
 136     virtual bool OnInit() { return true; }
 137     virtual void OnExit() { wxEventHashTable::ClearAll(); }
 138
 139     DECLARE_DYNAMIC_CLASS(wxEventTableEntryModule)
 140 };
 141
 142 IMPLEMENT_DYNAMIC_CLASS(wxEventTableEntryModule, wxModule)
 143
 144 #endif // wxUSE_MEMORY_TRACING
 145
 146 // ----------------------------------------------------------------------------
 147 // global variables
 148 // ----------------------------------------------------------------------------
 149
 150 // common event types are defined here, other event types are defined by the
 151 // components which use them
 152
 153 const wxEventType wxEVT_FIRST = 10000;
 154 const wxEventType wxEVT_USER_FIRST = wxEVT_FIRST + 2000;
 155 const wxEventType wxEVT_NULL = wxNewEventType();
 156
 157 wxDEFINE_EVENT( wxEVT_IDLE, wxIdleEvent );
 158
 159 // Thread and asynchronous call events
 160 wxDEFINE_EVENT( wxEVT_THREAD, wxThreadEvent );
 161 wxDEFINE_EVENT( wxEVT_ASYNC_METHOD_CALL, wxAsyncMethodCallEvent );
 162
 163 #endif // wxUSE_BASE
 164
 165 #if wxUSE_GUI
 166
 167 wxDEFINE_EVENT( wxEVT_BUTTON, wxCommandEvent );
 168 wxDEFINE_EVENT( wxEVT_CHECKBOX, wxCommandEvent );
 169 wxDEFINE_EVENT( wxEVT_CHOICE, wxCommandEvent );
 170 wxDEFINE_EVENT( wxEVT_LISTBOX, wxCommandEvent );
 171 wxDEFINE_EVENT( wxEVT_LISTBOX_DCLICK, wxCommandEvent );
 172 wxDEFINE_EVENT( wxEVT_CHECKLISTBOX, wxCommandEvent );
 173 wxDEFINE_EVENT( wxEVT_MENU, wxCommandEvent );
 174 wxDEFINE_EVENT( wxEVT_SLIDER, wxCommandEvent );
 175 wxDEFINE_EVENT( wxEVT_RADIOBOX, wxCommandEvent );
 176 wxDEFINE_EVENT( wxEVT_RADIOBUTTON, wxCommandEvent );
 177 wxDEFINE_EVENT( wxEVT_SCROLLBAR, wxCommandEvent );
 178 wxDEFINE_EVENT( wxEVT_VLBOX, wxCommandEvent );
 179 wxDEFINE_EVENT( wxEVT_COMBOBOX, wxCommandEvent );
 180 wxDEFINE_EVENT( wxEVT_TOOL_RCLICKED, wxCommandEvent );
 181 wxDEFINE_EVENT( wxEVT_TOOL_ENTER, wxCommandEvent );
 182 wxDEFINE_EVENT( wxEVT_SPINCTRL, wxCommandEvent );
 183 wxDEFINE_EVENT( wxEVT_SPINCTRLDOUBLE, wxCommandEvent );
 184 wxDEFINE_EVENT( wxEVT_TOOL_DROPDOWN, wxCommandEvent );
 185 wxDEFINE_EVENT( wxEVT_COMBOBOX_DROPDOWN, wxCommandEvent);
 186 wxDEFINE_EVENT( wxEVT_COMBOBOX_CLOSEUP, wxCommandEvent);
 187
 188 // Mouse event types
 189 wxDEFINE_EVENT( wxEVT_LEFT_DOWN, wxMouseEvent );
 190 wxDEFINE_EVENT( wxEVT_LEFT_UP, wxMouseEvent );
 191 wxDEFINE_EVENT( wxEVT_MIDDLE_DOWN, wxMouseEvent );
 192 wxDEFINE_EVENT( wxEVT_MIDDLE_UP, wxMouseEvent );
 193 wxDEFINE_EVENT( wxEVT_RIGHT_DOWN, wxMouseEvent );
 194 wxDEFINE_EVENT( wxEVT_RIGHT_UP, wxMouseEvent );
 195 wxDEFINE_EVENT( wxEVT_MOTION, wxMouseEvent );
 196 wxDEFINE_EVENT( wxEVT_ENTER_WINDOW, wxMouseEvent );
 197 wxDEFINE_EVENT( wxEVT_LEAVE_WINDOW, wxMouseEvent );
 198 wxDEFINE_EVENT( wxEVT_LEFT_DCLICK, wxMouseEvent );
 199 wxDEFINE_EVENT( wxEVT_MIDDLE_DCLICK, wxMouseEvent );
 200 wxDEFINE_EVENT( wxEVT_RIGHT_DCLICK, wxMouseEvent );
 201 wxDEFINE_EVENT( wxEVT_SET_FOCUS, wxFocusEvent );
 202 wxDEFINE_EVENT( wxEVT_KILL_FOCUS, wxFocusEvent );
 203 wxDEFINE_EVENT( wxEVT_CHILD_FOCUS, wxChildFocusEvent );
 204 wxDEFINE_EVENT( wxEVT_MOUSEWHEEL, wxMouseEvent );
 205 wxDEFINE_EVENT( wxEVT_AUX1_DOWN, wxMouseEvent );
 206 wxDEFINE_EVENT( wxEVT_AUX1_UP, wxMouseEvent );
 207 wxDEFINE_EVENT( wxEVT_AUX1_DCLICK, wxMouseEvent );
 208 wxDEFINE_EVENT( wxEVT_AUX2_DOWN, wxMouseEvent );
 209 wxDEFINE_EVENT( wxEVT_AUX2_UP, wxMouseEvent );
 210 wxDEFINE_EVENT( wxEVT_AUX2_DCLICK, wxMouseEvent );
 211
 212 // Character input event type
 213 wxDEFINE_EVENT( wxEVT_CHAR, wxKeyEvent );
 214 wxDEFINE_EVENT( wxEVT_AFTER_CHAR, wxKeyEvent );
 215 wxDEFINE_EVENT( wxEVT_CHAR_HOOK, wxKeyEvent );
 216 wxDEFINE_EVENT( wxEVT_NAVIGATION_KEY, wxNavigationKeyEvent );
 217 wxDEFINE_EVENT( wxEVT_KEY_DOWN, wxKeyEvent );
 218 wxDEFINE_EVENT( wxEVT_KEY_UP, wxKeyEvent );
 219 #if wxUSE_HOTKEY
 220 wxDEFINE_EVENT( wxEVT_HOTKEY, wxKeyEvent );
 221 #endif
 222
 223 // Set cursor event
 224 wxDEFINE_EVENT( wxEVT_SET_CURSOR, wxSetCursorEvent );
 225
 226 // wxScrollbar and wxSlider event identifiers
 227 wxDEFINE_EVENT( wxEVT_SCROLL_TOP, wxScrollEvent );
 228 wxDEFINE_EVENT( wxEVT_SCROLL_BOTTOM, wxScrollEvent );
 229 wxDEFINE_EVENT( wxEVT_SCROLL_LINEUP, wxScrollEvent );
 230 wxDEFINE_EVENT( wxEVT_SCROLL_LINEDOWN, wxScrollEvent );
 231 wxDEFINE_EVENT( wxEVT_SCROLL_PAGEUP, wxScrollEvent );
 232 wxDEFINE_EVENT( wxEVT_SCROLL_PAGEDOWN, wxScrollEvent );
 233 wxDEFINE_EVENT( wxEVT_SCROLL_THUMBTRACK, wxScrollEvent );
 234 wxDEFINE_EVENT( wxEVT_SCROLL_THUMBRELEASE, wxScrollEvent );
 235 wxDEFINE_EVENT( wxEVT_SCROLL_CHANGED, wxScrollEvent );
 236
 237 // Due to a bug in older wx versions, wxSpinEvents were being sent with type of
 238 // wxEVT_SCROLL_LINEUP, wxEVT_SCROLL_LINEDOWN and wxEVT_SCROLL_THUMBTRACK. But
 239 // with the type-safe events in place, these event types are associated with
 240 // wxScrollEvent. To allow handling of spin events, new event types have been
 241 // defined in spinbutt.h/spinnbuttcmn.cpp. To maintain backward compatibility
 242 // the spin event types are being initialized with the scroll event types.
 243
 244 #if wxUSE_SPINBTN
 245
 246 wxDEFINE_EVENT_ALIAS( wxEVT_SPIN_UP,   wxSpinEvent, wxEVT_SCROLL_LINEUP );
 247 wxDEFINE_EVENT_ALIAS( wxEVT_SPIN_DOWN, wxSpinEvent, wxEVT_SCROLL_LINEDOWN );
 248 wxDEFINE_EVENT_ALIAS( wxEVT_SPIN,      wxSpinEvent, wxEVT_SCROLL_THUMBTRACK );
 249
 250 #endif // wxUSE_SPINBTN
 251
 252 // Scroll events from wxWindow
 253 wxDEFINE_EVENT( wxEVT_SCROLLWIN_TOP, wxScrollWinEvent );
 254 wxDEFINE_EVENT( wxEVT_SCROLLWIN_BOTTOM, wxScrollWinEvent );
 255 wxDEFINE_EVENT( wxEVT_SCROLLWIN_LINEUP, wxScrollWinEvent );
 256 wxDEFINE_EVENT( wxEVT_SCROLLWIN_LINEDOWN, wxScrollWinEvent );
 257 wxDEFINE_EVENT( wxEVT_SCROLLWIN_PAGEUP, wxScrollWinEvent );
 258 wxDEFINE_EVENT( wxEVT_SCROLLWIN_PAGEDOWN, wxScrollWinEvent );
 259 wxDEFINE_EVENT( wxEVT_SCROLLWIN_THUMBTRACK, wxScrollWinEvent );
 260 wxDEFINE_EVENT( wxEVT_SCROLLWIN_THUMBRELEASE, wxScrollWinEvent );
 261
 262 // System events
 263 wxDEFINE_EVENT( wxEVT_SIZE, wxSizeEvent );
 264 wxDEFINE_EVENT( wxEVT_SIZING, wxSizeEvent );
 265 wxDEFINE_EVENT( wxEVT_MOVE, wxMoveEvent );
 266 wxDEFINE_EVENT( wxEVT_MOVING, wxMoveEvent );
 267 wxDEFINE_EVENT( wxEVT_MOVE_START, wxMoveEvent );
 268 wxDEFINE_EVENT( wxEVT_MOVE_END, wxMoveEvent );
 269 wxDEFINE_EVENT( wxEVT_CLOSE_WINDOW, wxCloseEvent );
 270 wxDEFINE_EVENT( wxEVT_END_SESSION, wxCloseEvent );
 271 wxDEFINE_EVENT( wxEVT_QUERY_END_SESSION, wxCloseEvent );
 272 wxDEFINE_EVENT( wxEVT_HIBERNATE, wxActivateEvent );
 273 wxDEFINE_EVENT( wxEVT_ACTIVATE_APP, wxActivateEvent );
 274 wxDEFINE_EVENT( wxEVT_ACTIVATE, wxActivateEvent );
 275 wxDEFINE_EVENT( wxEVT_CREATE, wxWindowCreateEvent );
 276 wxDEFINE_EVENT( wxEVT_DESTROY, wxWindowDestroyEvent );
 277 wxDEFINE_EVENT( wxEVT_SHOW, wxShowEvent );
 278 wxDEFINE_EVENT( wxEVT_ICONIZE, wxIconizeEvent );
 279 wxDEFINE_EVENT( wxEVT_MAXIMIZE, wxMaximizeEvent );
 280 wxDEFINE_EVENT( wxEVT_MOUSE_CAPTURE_CHANGED, wxMouseCaptureChangedEvent );
 281 wxDEFINE_EVENT( wxEVT_MOUSE_CAPTURE_LOST, wxMouseCaptureLostEvent );
 282 wxDEFINE_EVENT( wxEVT_PAINT, wxPaintEvent );
 283 wxDEFINE_EVENT( wxEVT_ERASE_BACKGROUND, wxEraseEvent );
 284 wxDEFINE_EVENT( wxEVT_NC_PAINT, wxNcPaintEvent );
 285 wxDEFINE_EVENT( wxEVT_MENU_OPEN, wxMenuEvent );
 286 wxDEFINE_EVENT( wxEVT_MENU_CLOSE, wxMenuEvent );
 287 wxDEFINE_EVENT( wxEVT_MENU_HIGHLIGHT, wxMenuEvent );
 288 wxDEFINE_EVENT( wxEVT_CONTEXT_MENU, wxContextMenuEvent );
 289 wxDEFINE_EVENT( wxEVT_SYS_COLOUR_CHANGED, wxSysColourChangedEvent );
 290 wxDEFINE_EVENT( wxEVT_DISPLAY_CHANGED, wxDisplayChangedEvent );
 291 wxDEFINE_EVENT( wxEVT_QUERY_NEW_PALETTE, wxQueryNewPaletteEvent );
 292 wxDEFINE_EVENT( wxEVT_PALETTE_CHANGED, wxPaletteChangedEvent );
 293 wxDEFINE_EVENT( wxEVT_JOY_BUTTON_DOWN, wxJoystickEvent );
 294 wxDEFINE_EVENT( wxEVT_JOY_BUTTON_UP, wxJoystickEvent );
 295 wxDEFINE_EVENT( wxEVT_JOY_MOVE, wxJoystickEvent );
 296 wxDEFINE_EVENT( wxEVT_JOY_ZMOVE, wxJoystickEvent );
 297 wxDEFINE_EVENT( wxEVT_DROP_FILES, wxDropFilesEvent );
 298 wxDEFINE_EVENT( wxEVT_INIT_DIALOG, wxInitDialogEvent );
 299 wxDEFINE_EVENT( wxEVT_UPDATE_UI, wxUpdateUIEvent );
 300
 301 // Clipboard events
 302 wxDEFINE_EVENT( wxEVT_TEXT_COPY, wxClipboardTextEvent );
 303 wxDEFINE_EVENT( wxEVT_TEXT_CUT, wxClipboardTextEvent );
 304 wxDEFINE_EVENT( wxEVT_TEXT_PASTE, wxClipboardTextEvent );
 305
 306 // Generic command events
 307 // Note: a click is a higher-level event than button down/up
 308 wxDEFINE_EVENT( wxEVT_COMMAND_LEFT_CLICK, wxCommandEvent );
 309 wxDEFINE_EVENT( wxEVT_COMMAND_LEFT_DCLICK, wxCommandEvent );
 310 wxDEFINE_EVENT( wxEVT_COMMAND_RIGHT_CLICK, wxCommandEvent );
 311 wxDEFINE_EVENT( wxEVT_COMMAND_RIGHT_DCLICK, wxCommandEvent );
 312 wxDEFINE_EVENT( wxEVT_COMMAND_SET_FOCUS, wxCommandEvent );
 313 wxDEFINE_EVENT( wxEVT_COMMAND_KILL_FOCUS, wxCommandEvent );
 314 wxDEFINE_EVENT( wxEVT_COMMAND_ENTER, wxCommandEvent );
 315
 316 // Help events
 317 wxDEFINE_EVENT( wxEVT_HELP, wxHelpEvent );
 318 wxDEFINE_EVENT( wxEVT_DETAILED_HELP, wxHelpEvent );
 319
 320 #endif // wxUSE_GUI
 321
 322 #if wxUSE_BASE
 323
 324 wxIdleMode wxIdleEvent::sm_idleMode = wxIDLE_PROCESS_ALL;
 325
 326 // ============================================================================
 327 // implementation
 328 // ============================================================================
 329
 330 // ----------------------------------------------------------------------------
 331 // event initialization
 332 // ----------------------------------------------------------------------------
 333
 334 int wxNewEventType()
 335 {
 336     // MT-FIXME
 337     static int s_lastUsedEventType = wxEVT_FIRST;
 338
 339     return s_lastUsedEventType++;
 340 }
 341 // ----------------------------------------------------------------------------
 342 // wxEventFunctor
 343 // ----------------------------------------------------------------------------
 344
 345 wxEventFunctor::~wxEventFunctor()
 346 {
 347 }
 348
 349 // ----------------------------------------------------------------------------
 350 // wxEvent
 351 // ----------------------------------------------------------------------------
 352
 353 /*
 354  * General wxWidgets events, covering all interesting things that might happen
 355  * (button clicking, resizing, setting text in widgets, etc.).
 356  *
 357  * For each completely new event type, derive a new event class.
 358  *
 359  */
 360
 361 wxEvent::wxEvent(int theId, wxEventType commandType)
 362 {
 363     m_eventType = commandType;
 364     m_eventObject = NULL;
 365     m_timeStamp = 0;
 366     m_id = theId;
 367     m_skipped = false;
 368     m_callbackUserData = NULL;
 369     m_handlerToProcessOnlyIn = NULL;
 370     m_isCommandEvent = false;
 371     m_propagationLevel = wxEVENT_PROPAGATE_NONE;
 372     m_wasProcessed = false;
 373     m_willBeProcessedAgain = false;
 374 }
 375
 376 wxEvent::wxEvent(const wxEvent& src)
 377     : wxObject(src)
 378     , m_eventObject(src.m_eventObject)
 379     , m_eventType(src.m_eventType)
 380     , m_timeStamp(src.m_timeStamp)
 381     , m_id(src.m_id)
 382     , m_callbackUserData(src.m_callbackUserData)
 383     , m_handlerToProcessOnlyIn(NULL)
 384     , m_propagationLevel(src.m_propagationLevel)
 385     , m_skipped(src.m_skipped)
 386     , m_isCommandEvent(src.m_isCommandEvent)
 387     , m_wasProcessed(false)
 388     , m_willBeProcessedAgain(false)
 389 {
 390 }
 391
 392 wxEvent& wxEvent::operator=(const wxEvent& src)
 393 {
 394     wxObject::operator=(src);
 395
 396     m_eventObject = src.m_eventObject;
 397     m_eventType = src.m_eventType;
 398     m_timeStamp = src.m_timeStamp;
 399     m_id = src.m_id;
 400     m_callbackUserData = src.m_callbackUserData;
 401     m_handlerToProcessOnlyIn = NULL;
 402     m_propagationLevel = src.m_propagationLevel;
 403     m_skipped = src.m_skipped;
 404     m_isCommandEvent = src.m_isCommandEvent;
 405
 406     // don't change m_wasProcessed
 407
 408     // While the original again could be passed to another handler, this one
 409     // isn't going to be processed anywhere else by default.
 410     m_willBeProcessedAgain = false;
 411
 412     return *this;
 413 }
 414
 415 #endif // wxUSE_BASE
 416
 417 #if wxUSE_GUI
 418
 419 // ----------------------------------------------------------------------------
 420 // wxCommandEvent
 421 // ----------------------------------------------------------------------------
 422
 423 wxCommandEvent::wxCommandEvent(wxEventType commandType, int theId)
 424               : wxEvent(theId, commandType)
 425 {
 426     m_clientData = NULL;
 427     m_clientObject = NULL;
 428     m_isCommandEvent = true;
 429
 430     // the command events are propagated upwards by default
 431     m_propagationLevel = wxEVENT_PROPAGATE_MAX;
 432 }
 433
 434 wxString wxCommandEvent::GetString() const
 435 {
 436     if (m_eventType != wxEVT_TEXT || !m_eventObject)
 437     {
 438         return m_cmdString;
 439     }
 440     else
 441     {
 442 #if wxUSE_TEXTCTRL
 443         wxTextCtrl *txt = wxDynamicCast(m_eventObject, wxTextCtrl);
 444         if ( txt )
 445             return txt->GetValue();
 446         else
 447 #endif // wxUSE_TEXTCTRL
 448             return m_cmdString;
 449     }
 450 }
 451
 452 // ----------------------------------------------------------------------------
 453 // wxUpdateUIEvent
 454 // ----------------------------------------------------------------------------
 455
 456 #if wxUSE_LONGLONG
 457 wxLongLong wxUpdateUIEvent::sm_lastUpdate = 0;
 458 #endif
 459
 460 long wxUpdateUIEvent::sm_updateInterval = 0;
 461
 462 wxUpdateUIMode wxUpdateUIEvent::sm_updateMode = wxUPDATE_UI_PROCESS_ALL;
 463
 464 // Can we update?
 465 bool wxUpdateUIEvent::CanUpdate(wxWindowBase *win)
 466 {
 467     // Don't update if we've switched global updating off
 468     // and this window doesn't support updates.
 469     if (win &&
 470        (GetMode() == wxUPDATE_UI_PROCESS_SPECIFIED &&
 471        ((win->GetExtraStyle() & wxWS_EX_PROCESS_UI_UPDATES) == 0)))
 472         return false;
 473
 474     // Don't update children of the hidden windows: this is useless as any
 475     // change to their state won't be seen by the user anyhow. Notice that this
 476     // argument doesn't apply to the hidden windows (with visible parent)
 477     // themselves as they could be shown by their EVT_UPDATE_UI handler.
 478     if ( win->GetParent() && !win->GetParent()->IsShownOnScreen() )
 479         return false;
 480
 481     if (sm_updateInterval == -1)
 482         return false;
 483
 484     if (sm_updateInterval == 0)
 485         return true;
 486
 487 #if wxUSE_STOPWATCH && wxUSE_LONGLONG
 488     wxLongLong now = wxGetLocalTimeMillis();
 489     if (now > (sm_lastUpdate + sm_updateInterval))
 490     {
 491         return true;
 492     }
 493
 494     return false;
 495 #else
 496     // If we don't have wxStopWatch or wxLongLong, we
 497     // should err on the safe side and update now anyway.
 498     return true;
 499 #endif
 500 }
 501
 502 // Reset the update time to provide a delay until the next
 503 // time we should update
 504 void wxUpdateUIEvent::ResetUpdateTime()
 505 {
 506 #if wxUSE_STOPWATCH && wxUSE_LONGLONG
 507     if (sm_updateInterval > 0)
 508     {
 509         wxLongLong now = wxGetLocalTimeMillis();
 510         if (now > (sm_lastUpdate + sm_updateInterval))
 511         {
 512             sm_lastUpdate = now;
 513         }
 514     }
 515 #endif
 516 }
 517
 518 // ----------------------------------------------------------------------------
 519 // wxScrollEvent
 520 // ----------------------------------------------------------------------------
 521
 522 wxScrollEvent::wxScrollEvent(wxEventType commandType,
 523                              int id,
 524                              int pos,
 525                              int orient)
 526     : wxCommandEvent(commandType, id)
 527 {
 528     m_extraLong = orient;
 529     m_commandInt = pos;
 530 }
 531
 532 // ----------------------------------------------------------------------------
 533 // wxScrollWinEvent
 534 // ----------------------------------------------------------------------------
 535
 536 wxScrollWinEvent::wxScrollWinEvent(wxEventType commandType,
 537                                    int pos,
 538                                    int orient)
 539 {
 540     m_eventType = commandType;
 541     m_extraLong = orient;
 542     m_commandInt = pos;
 543 }
 544
 545 // ----------------------------------------------------------------------------
 546 // wxMouseEvent
 547 // ----------------------------------------------------------------------------
 548
 549 wxMouseEvent::wxMouseEvent(wxEventType commandType)
 550 {
 551     m_eventType = commandType;
 552
 553     m_x = 0;
 554     m_y = 0;
 555
 556     m_leftDown = false;
 557     m_middleDown = false;
 558     m_rightDown = false;
 559     m_aux1Down = false;
 560     m_aux2Down = false;
 561
 562     m_clickCount = -1;
 563
 564     m_wheelAxis = wxMOUSE_WHEEL_VERTICAL;
 565     m_wheelRotation = 0;
 566     m_wheelDelta = 0;
 567     m_linesPerAction = 0;
 568     m_columnsPerAction = 0;
 569 }
 570
 571 void wxMouseEvent::Assign(const wxMouseEvent& event)
 572 {
 573     wxEvent::operator=(event);
 574
 575     // Borland C++ 5.82 doesn't compile an explicit call to an implicitly
 576     // defined operator=() so need to do it this way:
 577     *static_cast<wxMouseState *>(this) = event;
 578
 579     m_x = event.m_x;
 580     m_y = event.m_y;
 581
 582     m_leftDown = event.m_leftDown;
 583     m_middleDown = event.m_middleDown;
 584     m_rightDown = event.m_rightDown;
 585     m_aux1Down = event.m_aux1Down;
 586     m_aux2Down = event.m_aux2Down;
 587
 588     m_wheelRotation = event.m_wheelRotation;
 589     m_wheelDelta = event.m_wheelDelta;
 590     m_linesPerAction = event.m_linesPerAction;
 591     m_columnsPerAction = event.m_columnsPerAction;
 592     m_wheelAxis = event.m_wheelAxis;
 593 }
 594
 595 // return true if was a button dclick event
 596 bool wxMouseEvent::ButtonDClick(int but) const
 597 {
 598     switch (but)
 599     {
 600         default:
 601             wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::ButtonDClick"));
 602             // fall through
 603
 604         case wxMOUSE_BTN_ANY:
 605             return (LeftDClick() || MiddleDClick() || RightDClick() ||
 606                     Aux1DClick() || Aux2DClick());
 607
 608         case wxMOUSE_BTN_LEFT:
 609             return LeftDClick();
 610
 611         case wxMOUSE_BTN_MIDDLE:
 612             return MiddleDClick();
 613
 614         case wxMOUSE_BTN_RIGHT:
 615             return RightDClick();
 616
 617         case wxMOUSE_BTN_AUX1:
 618             return Aux1DClick();
 619
 620         case wxMOUSE_BTN_AUX2:
 621             return Aux2DClick();
 622     }
 623 }
 624
 625 // return true if was a button down event
 626 bool wxMouseEvent::ButtonDown(int but) const
 627 {
 628     switch (but)
 629     {
 630         default:
 631             wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::ButtonDown"));
 632             // fall through
 633
 634         case wxMOUSE_BTN_ANY:
 635             return (LeftDown() || MiddleDown() || RightDown() ||
 636                     Aux1Down() || Aux2Down());
 637
 638         case wxMOUSE_BTN_LEFT:
 639             return LeftDown();
 640
 641         case wxMOUSE_BTN_MIDDLE:
 642             return MiddleDown();
 643
 644         case wxMOUSE_BTN_RIGHT:
 645             return RightDown();
 646
 647         case wxMOUSE_BTN_AUX1:
 648             return Aux1Down();
 649
 650         case wxMOUSE_BTN_AUX2:
 651             return Aux2Down();
 652     }
 653 }
 654
 655 // return true if was a button up event
 656 bool wxMouseEvent::ButtonUp(int but) const
 657 {
 658     switch (but)
 659     {
 660         default:
 661             wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::ButtonUp"));
 662             // fall through
 663
 664         case wxMOUSE_BTN_ANY:
 665             return (LeftUp() || MiddleUp() || RightUp() ||
 666                     Aux1Up() || Aux2Up());
 667
 668         case wxMOUSE_BTN_LEFT:
 669             return LeftUp();
 670
 671         case wxMOUSE_BTN_MIDDLE:
 672             return MiddleUp();
 673
 674         case wxMOUSE_BTN_RIGHT:
 675             return RightUp();
 676
 677         case wxMOUSE_BTN_AUX1:
 678             return Aux1Up();
 679
 680         case wxMOUSE_BTN_AUX2:
 681             return Aux2Up();
 682     }
 683 }
 684
 685 // return true if the given button is currently changing state
 686 bool wxMouseEvent::Button(int but) const
 687 {
 688     switch (but)
 689     {
 690         default:
 691             wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::Button"));
 692             // fall through
 693
 694         case wxMOUSE_BTN_ANY:
 695             return ButtonUp(wxMOUSE_BTN_ANY) ||
 696                     ButtonDown(wxMOUSE_BTN_ANY) ||
 697                         ButtonDClick(wxMOUSE_BTN_ANY);
 698
 699         case wxMOUSE_BTN_LEFT:
 700             return LeftDown() || LeftUp() || LeftDClick();
 701
 702         case wxMOUSE_BTN_MIDDLE:
 703             return MiddleDown() || MiddleUp() || MiddleDClick();
 704
 705         case wxMOUSE_BTN_RIGHT:
 706             return RightDown() || RightUp() || RightDClick();
 707
 708         case wxMOUSE_BTN_AUX1:
 709            return Aux1Down() || Aux1Up() || Aux1DClick();
 710
 711         case wxMOUSE_BTN_AUX2:
 712            return Aux2Down() || Aux2Up() || Aux2DClick();
 713     }
 714 }
 715
 716 int wxMouseEvent::GetButton() const
 717 {
 718     for ( int i = 1; i < wxMOUSE_BTN_MAX; i++ )
 719     {
 720         if ( Button(i) )
 721         {
 722             return i;
 723         }
 724     }
 725
 726     return wxMOUSE_BTN_NONE;
 727 }
 728
 729 // Find the logical position of the event given the DC
 730 wxPoint wxMouseEvent::GetLogicalPosition(const wxDC& dc) const
 731 {
 732     wxPoint pt(dc.DeviceToLogicalX(m_x), dc.DeviceToLogicalY(m_y));
 733     return pt;
 734 }
 735
 736 // ----------------------------------------------------------------------------
 737 // wxKeyEvent
 738 // ----------------------------------------------------------------------------
 739
 740 wxKeyEvent::wxKeyEvent(wxEventType type)
 741 {
 742     m_eventType = type;
 743     m_keyCode = WXK_NONE;
 744 #if wxUSE_UNICODE
 745     m_uniChar = WXK_NONE;
 746 #endif
 747
 748     m_x =
 749     m_y = wxDefaultCoord;
 750     m_hasPosition = false;
 751
 752     InitPropagation();
 753 }
 754
 755 wxKeyEvent::wxKeyEvent(const wxKeyEvent& evt)
 756           : wxEvent(evt),
 757             wxKeyboardState(evt)
 758 {
 759     DoAssignMembers(evt);
 760
 761     InitPropagation();
 762 }
 763
 764 wxKeyEvent::wxKeyEvent(wxEventType eventType, const wxKeyEvent& evt)
 765           : wxEvent(evt),
 766             wxKeyboardState(evt)
 767 {
 768     DoAssignMembers(evt);
 769
 770     m_eventType = eventType;
 771
 772     InitPropagation();
 773 }
 774
 775 void wxKeyEvent::InitPositionIfNecessary() const
 776 {
 777     if ( m_hasPosition )
 778         return;
 779
 780     // We're const because we're called from const Get[XY]() methods but we
 781     // need to update the "cached" values.
 782     wxKeyEvent& self = const_cast<wxKeyEvent&>(*this);
 783     self.m_hasPosition = true;
 784
 785     // The only position we can possibly associate with the keyboard event on
 786     // the platforms where it doesn't carry it already is the mouse position.
 787     wxGetMousePosition(&self.m_x, &self.m_y);
 788
 789     // If this event is associated with a window, the position should be in its
 790     // client coordinates, but otherwise leave it in screen coordinates as what
 791     // else can we use?
 792     wxWindow* const win = wxDynamicCast(GetEventObject(), wxWindow);
 793     if ( win )
 794         win->ScreenToClient(&self.m_x, &self.m_y);
 795 }
 796
 797 wxCoord wxKeyEvent::GetX() const
 798 {
 799     InitPositionIfNecessary();
 800
 801     return m_x;
 802 }
 803
 804 wxCoord wxKeyEvent::GetY() const
 805 {
 806     InitPositionIfNecessary();
 807
 808     return m_y;
 809 }
 810
 811 bool wxKeyEvent::IsKeyInCategory(int category) const
 812 {
 813     switch ( GetKeyCode() )
 814     {
 815         case WXK_LEFT:
 816         case WXK_RIGHT:
 817         case WXK_UP:
 818         case WXK_DOWN:
 819         case WXK_NUMPAD_LEFT:
 820         case WXK_NUMPAD_RIGHT:
 821         case WXK_NUMPAD_UP:
 822         case WXK_NUMPAD_DOWN:
 823             return (category & WXK_CATEGORY_ARROW) != 0;
 824
 825         case WXK_PAGEDOWN:
 826         case WXK_END:
 827         case WXK_NUMPAD_PAGEUP:
 828         case WXK_NUMPAD_PAGEDOWN:
 829             return (category & WXK_CATEGORY_PAGING) != 0;
 830
 831         case WXK_HOME:
 832         case WXK_PAGEUP:
 833         case WXK_NUMPAD_HOME:
 834         case WXK_NUMPAD_END:
 835             return (category & WXK_CATEGORY_JUMP) != 0;
 836
 837         case WXK_TAB:
 838         case WXK_NUMPAD_TAB:
 839             return (category & WXK_CATEGORY_TAB) != 0;
 840
 841         case WXK_BACK:
 842         case WXK_DELETE:
 843         case WXK_NUMPAD_DELETE:
 844             return (category & WXK_CATEGORY_CUT) != 0;
 845
 846         default:
 847             return false;
 848     }
 849 }
 850
 851 // ----------------------------------------------------------------------------
 852 // wxWindowCreateEvent
 853 // ----------------------------------------------------------------------------
 854
 855 wxWindowCreateEvent::wxWindowCreateEvent(wxWindow *win)
 856 {
 857     SetEventType(wxEVT_CREATE);
 858     SetEventObject(win);
 859 }
 860
 861 // ----------------------------------------------------------------------------
 862 // wxWindowDestroyEvent
 863 // ----------------------------------------------------------------------------
 864
 865 wxWindowDestroyEvent::wxWindowDestroyEvent(wxWindow *win)
 866 {
 867     SetEventType(wxEVT_DESTROY);
 868     SetEventObject(win);
 869 }
 870
 871 // ----------------------------------------------------------------------------
 872 // wxChildFocusEvent
 873 // ----------------------------------------------------------------------------
 874
 875 wxChildFocusEvent::wxChildFocusEvent(wxWindow *win)
 876                  : wxCommandEvent(wxEVT_CHILD_FOCUS)
 877 {
 878     SetEventObject(win);
 879 }
 880
 881 // ----------------------------------------------------------------------------
 882 // wxHelpEvent
 883 // ----------------------------------------------------------------------------
 884
 885 /* static */
 886 wxHelpEvent::Origin wxHelpEvent::GuessOrigin(Origin origin)
 887 {
 888     if ( origin == Origin_Unknown )
 889     {
 890         // assume that the event comes from the help button if it's not from
 891         // keyboard and that pressing F1 always results in the help event
 892         origin = wxGetKeyState(WXK_F1) ? Origin_Keyboard : Origin_HelpButton;
 893     }
 894
 895     return origin;
 896 }
 897
 898 #endif // wxUSE_GUI
 899
 900
 901 #if wxUSE_BASE
 902
 903 // ----------------------------------------------------------------------------
 904 // wxEventHashTable
 905 // ----------------------------------------------------------------------------
 906
 907 static const int EVENT_TYPE_TABLE_INIT_SIZE = 31; // Not too big not too small...
 908
 909 wxEventHashTable* wxEventHashTable::sm_first = NULL;
 910
 911 wxEventHashTable::wxEventHashTable(const wxEventTable &table)
 912                 : m_table(table),
 913                   m_rebuildHash(true)
 914 {
 915     AllocEventTypeTable(EVENT_TYPE_TABLE_INIT_SIZE);
 916
 917     m_next = sm_first;
 918     if (m_next)
 919         m_next->m_previous = this;
 920     sm_first = this;
 921 }
 922
 923 wxEventHashTable::~wxEventHashTable()
 924 {
 925     if (m_next)
 926         m_next->m_previous = m_previous;
 927     if (m_previous)
 928         m_previous->m_next = m_next;
 929     if (sm_first == this)
 930         sm_first = m_next;
 931
 932     Clear();
 933 }
 934
 935 void wxEventHashTable::Clear()
 936 {
 937     for ( size_t i = 0; i < m_size; i++ )
 938     {
 939         EventTypeTablePointer  eTTnode = m_eventTypeTable[i];
 940         delete eTTnode;
 941     }
 942
 943     wxDELETEA(m_eventTypeTable);
 944
 945     m_size = 0;
 946 }
 947
 948 #if wxUSE_MEMORY_TRACING
 949
 950 // Clear all tables
 951 void wxEventHashTable::ClearAll()
 952 {
 953     wxEventHashTable* table = sm_first;
 954     while (table)
 955     {
 956         table->Clear();
 957         table = table->m_next;
 958     }
 959 }
 960
 961 #endif // wxUSE_MEMORY_TRACING
 962
 963 bool wxEventHashTable::HandleEvent(wxEvent &event, wxEvtHandler *self)
 964 {
 965     if (m_rebuildHash)
 966     {
 967         InitHashTable();
 968         m_rebuildHash = false;
 969     }
 970
 971     if (!m_eventTypeTable)
 972         return false;
 973
 974     // Find all entries for the given event type.
 975     wxEventType eventType = event.GetEventType();
 976     const EventTypeTablePointer eTTnode = m_eventTypeTable[eventType % m_size];
 977     if (eTTnode && eTTnode->eventType == eventType)
 978     {
 979         // Now start the search for an event handler
 980         // that can handle an event with the given ID.
 981         const wxEventTableEntryPointerArray&
 982             eventEntryTable = eTTnode->eventEntryTable;
 983
 984         const size_t count = eventEntryTable.GetCount();
 985         for (size_t n = 0; n < count; n++)
 986         {
 987             const wxEventTableEntry& entry = *eventEntryTable[n];
 988             if ( wxEvtHandler::ProcessEventIfMatchesId(entry, self, event) )
 989                 return true;
 990         }
 991     }
 992
 993     return false;
 994 }
 995
 996 void wxEventHashTable::InitHashTable()
 997 {
 998     // Loop over the event tables and all its base tables.
 999     const wxEventTable *table = &m_table;
1000     while (table)
1001     {
1002         // Retrieve all valid event handler entries
1003         const wxEventTableEntry *entry = table->entries;
1004         while (entry->m_fn != 0)
1005         {
1006             // Add the event entry in the Hash.
1007             AddEntry(*entry);
1008
1009             entry++;
1010         }
1011
1012         table = table->baseTable;
1013     }
1014
1015     // Let's free some memory.
1016     size_t i;
1017     for(i = 0; i < m_size; i++)
1018     {
1019         EventTypeTablePointer  eTTnode = m_eventTypeTable[i];
1020         if (eTTnode)
1021         {
1022             eTTnode->eventEntryTable.Shrink();
1023         }
1024     }
1025 }
1026
1027 void wxEventHashTable::AddEntry(const wxEventTableEntry &entry)
1028 {
1029     // This might happen 'accidentally' as the app is exiting
1030     if (!m_eventTypeTable)
1031         return;
1032
1033     EventTypeTablePointer *peTTnode = &m_eventTypeTable[entry.m_eventType % m_size];
1034     EventTypeTablePointer  eTTnode = *peTTnode;
1035
1036     if (eTTnode)
1037     {
1038         if (eTTnode->eventType != entry.m_eventType)
1039         {
1040             // Resize the table!
1041             GrowEventTypeTable();
1042             // Try again to add it.
1043             AddEntry(entry);
1044             return;
1045         }
1046     }
1047     else
1048     {
1049         eTTnode = new EventTypeTable;
1050         eTTnode->eventType = entry.m_eventType;
1051         *peTTnode = eTTnode;
1052     }
1053
1054     // Fill all hash entries between entry.m_id and entry.m_lastId...
1055     eTTnode->eventEntryTable.Add(&entry);
1056 }
1057
1058 void wxEventHashTable::AllocEventTypeTable(size_t size)
1059 {
1060     m_eventTypeTable = new EventTypeTablePointer[size];
1061     memset((void *)m_eventTypeTable, 0, sizeof(EventTypeTablePointer)*size);
1062     m_size = size;
1063 }
1064
1065 void wxEventHashTable::GrowEventTypeTable()
1066 {
1067     size_t oldSize = m_size;
1068     EventTypeTablePointer *oldEventTypeTable = m_eventTypeTable;
1069
1070     // TODO: Search the most optimal grow sequence
1071     AllocEventTypeTable(/* GetNextPrime(oldSize) */oldSize*2+1);
1072
1073     for ( size_t i = 0; i < oldSize; /* */ )
1074     {
1075         EventTypeTablePointer  eTToldNode = oldEventTypeTable[i];
1076         if (eTToldNode)
1077         {
1078             EventTypeTablePointer *peTTnode = &m_eventTypeTable[eTToldNode->eventType % m_size];
1079             EventTypeTablePointer  eTTnode = *peTTnode;
1080
1081             // Check for collision, we don't want any.
1082             if (eTTnode)
1083             {
1084                 GrowEventTypeTable();
1085                 continue; // Don't increment the counter,
1086                           // as we still need to add this element.
1087             }
1088             else
1089             {
1090                 // Get the old value and put it in the new table.
1091                 *peTTnode = oldEventTypeTable[i];
1092             }
1093         }
1094
1095         i++;
1096     }
1097
1098     delete[] oldEventTypeTable;
1099 }
1100
1101 // ----------------------------------------------------------------------------
1102 // wxEvtHandler
1103 // ----------------------------------------------------------------------------
1104
1105 wxEvtHandler::wxEvtHandler()
1106 {
1107     m_nextHandler = NULL;
1108     m_previousHandler = NULL;
1109     m_enabled = true;
1110     m_dynamicEvents = NULL;
1111     m_pendingEvents = NULL;
1112
1113     // no client data (yet)
1114     m_clientData = NULL;
1115     m_clientDataType = wxClientData_None;
1116 }
1117
1118 wxEvtHandler::~wxEvtHandler()
1119 {
1120     Unlink();
1121
1122     if (m_dynamicEvents)
1123     {
1124         for ( wxList::iterator it = m_dynamicEvents->begin(),
1125                                end = m_dynamicEvents->end();
1126               it != end;
1127               ++it )
1128         {
1129             wxDynamicEventTableEntry *entry = (wxDynamicEventTableEntry*)*it;
1130
1131             // Remove ourselves from sink destructor notifications
1132             // (this has usually been done, in wxTrackable destructor)
1133             wxEvtHandler *eventSink = entry->m_fn->GetEvtHandler();
1134             if ( eventSink )
1135             {
1136                 wxEventConnectionRef * const
1137                     evtConnRef = FindRefInTrackerList(eventSink);
1138                 if ( evtConnRef )
1139                 {
1140                     eventSink->RemoveNode(evtConnRef);
1141                     delete evtConnRef;
1142                 }
1143             }
1144
1145             delete entry->m_callbackUserData;
1146             delete entry;
1147         }
1148         delete m_dynamicEvents;
1149     }
1150
1151     // Remove us from the list of the pending events if necessary.
1152     if (wxTheApp)
1153         wxTheApp->RemovePendingEventHandler(this);
1154
1155     DeletePendingEvents();
1156
1157     // we only delete object data, not untyped
1158     if ( m_clientDataType == wxClientData_Object )
1159         delete m_clientObject;
1160 }
1161
1162 void wxEvtHandler::Unlink()
1163 {
1164     // this event handler must take itself out of the chain of handlers:
1165
1166     if (m_previousHandler)
1167         m_previousHandler->SetNextHandler(m_nextHandler);
1168
1169     if (m_nextHandler)
1170         m_nextHandler->SetPreviousHandler(m_previousHandler);
1171
1172     m_nextHandler = NULL;
1173     m_previousHandler = NULL;
1174 }
1175
1176 bool wxEvtHandler::IsUnlinked() const
1177 {
1178     return m_previousHandler == NULL &&
1179            m_nextHandler == NULL;
1180 }
1181
1182 wxEventFilter* wxEvtHandler::ms_filterList = NULL;
1183
1184 /* static */ void wxEvtHandler::AddFilter(wxEventFilter* filter)
1185 {
1186     wxCHECK_RET( filter, "NULL filter" );
1187
1188     filter->m_next = ms_filterList;
1189     ms_filterList = filter;
1190 }
1191
1192 /* static */ void wxEvtHandler::RemoveFilter(wxEventFilter* filter)
1193 {
1194     wxEventFilter* prev = NULL;
1195     for ( wxEventFilter* f = ms_filterList; f; f = f->m_next )
1196     {
1197         if ( f == filter )
1198         {
1199             // Set the previous list element or the list head to the next
1200             // element.
1201             if ( prev )
1202                 prev->m_next = f->m_next;
1203             else
1204                 ms_filterList = f->m_next;
1205
1206             // Also reset the next pointer in the filter itself just to avoid
1207             // having possibly dangling pointers, even though it's not strictly
1208             // necessary.
1209             f->m_next = NULL;
1210
1211             // Skip the assert below.
1212             return;
1213         }
1214
1215         prev = f;
1216     }
1217
1218     wxFAIL_MSG( "Filter not found" );
1219 }
1220
1221 #if wxUSE_THREADS
1222
1223 bool wxEvtHandler::ProcessThreadEvent(const wxEvent& event)
1224 {
1225     // check that we are really in a child thread
1226     wxASSERT_MSG( !wxThread::IsMain(),
1227                   wxT("use ProcessEvent() in main thread") );
1228
1229     AddPendingEvent(event);
1230
1231     return true;
1232 }
1233
1234 #endif // wxUSE_THREADS
1235
1236 void wxEvtHandler::QueueEvent(wxEvent *event)
1237 {
1238     wxCHECK_RET( event, "NULL event can't be posted" );
1239
1240     if (!wxTheApp)
1241     {
1242         // we need an event loop which manages the list of event handlers with
1243         // pending events... cannot proceed without it!
1244         wxLogDebug("No application object! Cannot queue this event!");
1245
1246         // anyway delete the given event to avoid memory leaks
1247         delete event;
1248
1249         return;
1250     }
1251
1252     // 1) Add this event to our list of pending events
1253     wxENTER_CRIT_SECT( m_pendingEventsLock );
1254
1255     if ( !m_pendingEvents )
1256         m_pendingEvents = new wxList;
1257
1258     m_pendingEvents->Append(event);
1259
1260     // 2) Add this event handler to list of event handlers that
1261     //    have pending events.
1262
1263     wxTheApp->AppendPendingEventHandler(this);
1264
1265     // only release m_pendingEventsLock now because otherwise there is a race
1266     // condition as described in the ticket #9093: we could process the event
1267     // just added to m_pendingEvents in our ProcessPendingEvents() below before
1268     // we had time to append this pointer to wxHandlersWithPendingEvents list; thus
1269     // breaking the invariant that a handler should be in the list iff it has
1270     // any pending events to process
1271     wxLEAVE_CRIT_SECT( m_pendingEventsLock );
1272
1273     // 3) Inform the system that new pending events are somewhere,
1274     //    and that these should be processed in idle time.
1275     wxWakeUpIdle();
1276 }
1277
1278 void wxEvtHandler::DeletePendingEvents()
1279 {
1280     if (m_pendingEvents)
1281         m_pendingEvents->DeleteContents(true);
1282     wxDELETE(m_pendingEvents);
1283 }
1284
1285 void wxEvtHandler::ProcessPendingEvents()
1286 {
1287     if (!wxTheApp)
1288     {
1289         // we need an event loop which manages the list of event handlers with
1290         // pending events... cannot proceed without it!
1291         wxLogDebug("No application object! Cannot process pending events!");
1292         return;
1293     }
1294
1295     // we need to process only a single pending event in this call because
1296     // each call to ProcessEvent() could result in the destruction of this
1297     // same event handler (see the comment at the end of this function)
1298
1299     wxENTER_CRIT_SECT( m_pendingEventsLock );
1300
1301     // this method is only called by wxApp if this handler does have
1302     // pending events
1303     wxCHECK_RET( m_pendingEvents && !m_pendingEvents->IsEmpty(),
1304                  "should have pending events if called" );
1305
1306     wxList::compatibility_iterator node = m_pendingEvents->GetFirst();
1307     wxEvent* pEvent = static_cast<wxEvent *>(node->GetData());
1308
1309     // find the first event which can be processed now:
1310     wxEventLoopBase* evtLoop = wxEventLoopBase::GetActive();
1311     if (evtLoop && evtLoop->IsYielding())
1312     {
1313         while (node && pEvent && !evtLoop->IsEventAllowedInsideYield(pEvent->GetEventCategory()))
1314         {
1315             node = node->GetNext();
1316             pEvent = node ? static_cast<wxEvent *>(node->GetData()) : NULL;
1317         }
1318
1319         if (!node)
1320         {
1321             // all our events are NOT processable now... signal this:
1322             wxTheApp->DelayPendingEventHandler(this);
1323
1324             // see the comment at the beginning of evtloop.h header for the
1325             // logic behind YieldFor() and behind DelayPendingEventHandler()
1326
1327             wxLEAVE_CRIT_SECT( m_pendingEventsLock );
1328
1329             return;
1330         }
1331     }
1332
1333     wxEventPtr event(pEvent);
1334
1335     // it's important we remove event from list before processing it, else a
1336     // nested event loop, for example from a modal dialog, might process the
1337     // same event again.
1338     m_pendingEvents->Erase(node);
1339
1340     if ( m_pendingEvents->IsEmpty() )
1341     {
1342         // if there are no more pending events left, we don't need to
1343         // stay in this list
1344         wxTheApp->RemovePendingEventHandler(this);
1345     }
1346
1347     wxLEAVE_CRIT_SECT( m_pendingEventsLock );
1348
1349     ProcessEvent(*event);
1350
1351     // careful: this object could have been deleted by the event handler
1352     // executed by the above ProcessEvent() call, so we can't access any fields
1353     // of this object any more
1354 }
1355
1356 /* static */
1357 bool wxEvtHandler::ProcessEventIfMatchesId(const wxEventTableEntryBase& entry,
1358                                            wxEvtHandler *handler,
1359                                            wxEvent& event)
1360 {
1361     int tableId1 = entry.m_id,
1362         tableId2 = entry.m_lastId;
1363
1364     // match only if the event type is the same and the id is either -1 in
1365     // the event table (meaning "any") or the event id matches the id
1366     // specified in the event table either exactly or by falling into
1367     // range between first and last
1368     if ((tableId1 == wxID_ANY) ||
1369         (tableId2 == wxID_ANY && tableId1 == event.GetId()) ||
1370         (tableId2 != wxID_ANY &&
1371          (event.GetId() >= tableId1 && event.GetId() <= tableId2)))
1372     {
1373         event.Skip(false);
1374         event.m_callbackUserData = entry.m_callbackUserData;
1375
1376 #if wxUSE_EXCEPTIONS
1377         if ( wxTheApp )
1378         {
1379             // call the handler via wxApp method which allows the user to catch
1380             // any exceptions which may be thrown by any handler in the program
1381             // in one place
1382             wxTheApp->CallEventHandler(handler, *entry.m_fn, event);
1383         }
1384         else
1385 #endif // wxUSE_EXCEPTIONS
1386         {
1387             (*entry.m_fn)(handler, event);
1388         }
1389
1390         if (!event.GetSkipped())
1391             return true;
1392     }
1393
1394     return false;
1395 }
1396
1397 bool wxEvtHandler::DoTryApp(wxEvent& event)
1398 {
1399     if ( wxTheApp && (this != wxTheApp) )
1400     {
1401         // Special case: don't pass wxEVT_IDLE to wxApp, since it'll always
1402         // swallow it. wxEVT_IDLE is sent explicitly to wxApp so it will be
1403         // processed appropriately via SearchEventTable.
1404         if ( event.GetEventType() != wxEVT_IDLE )
1405         {
1406             if ( wxTheApp->ProcessEvent(event) )
1407                 return true;
1408         }
1409     }
1410
1411     return false;
1412 }
1413
1414 bool wxEvtHandler::TryBefore(wxEvent& event)
1415 {
1416 #if WXWIN_COMPATIBILITY_2_8
1417     // call the old virtual function to keep the code overriding it working
1418     return TryValidator(event);
1419 #else
1420     wxUnusedVar(event);
1421     return false;
1422 #endif
1423 }
1424
1425 bool wxEvtHandler::TryAfter(wxEvent& event)
1426 {
1427     // We only want to pass the window to the application object once even if
1428     // there are several chained handlers. Ensure that this is what happens by
1429     // only calling DoTryApp() if there is no next handler (which would do it).
1430     //
1431     // Notice that, unlike simply calling TryAfter() on the last handler in the
1432     // chain only from ProcessEvent(), this also works with wxWindow object in
1433     // the middle of the chain: its overridden TryAfter() will still be called
1434     // and propagate the event upwards the window hierarchy even if it's not
1435     // the last one in the chain (which, admittedly, shouldn't happen often).
1436     if ( GetNextHandler() )
1437         return GetNextHandler()->TryAfter(event);
1438
1439     // If this event is going to be processed in another handler next, don't
1440     // pass it to wxTheApp now, it will be done from TryAfter() of this other
1441     // handler.
1442     if ( event.WillBeProcessedAgain() )
1443         return false;
1444
1445 #if WXWIN_COMPATIBILITY_2_8
1446     // as above, call the old virtual function for compatibility
1447     return TryParent(event);
1448 #else
1449     return DoTryApp(event);
1450 #endif
1451 }
1452
1453 bool wxEvtHandler::ProcessEvent(wxEvent& event)
1454 {
1455     // The very first thing we do is to allow any registered filters to hook
1456     // into event processing in order to globally pre-process all events.
1457     //
1458     // Note that we should only do it if we're the first event handler called
1459     // to avoid calling FilterEvent() multiple times as the event goes through
1460     // the event handler chain and possibly upwards the window hierarchy.
1461     if ( !event.WasProcessed() )
1462     {
1463         for ( wxEventFilter* f = ms_filterList; f; f = f->m_next )
1464         {
1465             int rc = f->FilterEvent(event);
1466             if ( rc != wxEventFilter::Event_Skip )
1467             {
1468                 wxASSERT_MSG( rc == wxEventFilter::Event_Ignore ||
1469                                 rc == wxEventFilter::Event_Processed,
1470                               "unexpected FilterEvent() return value" );
1471
1472                 return rc != wxEventFilter::Event_Ignore;
1473             }
1474             //else: proceed normally
1475         }
1476     }
1477
1478     // Short circuit the event processing logic if we're requested to process
1479     // this event in this handler only, see DoTryChain() for more details.
1480     if ( event.ShouldProcessOnlyIn(this) )
1481         return TryBeforeAndHere(event);
1482
1483
1484     // Try to process the event in this handler itself.
1485     if ( ProcessEventLocally(event) )
1486     {
1487         // It is possible that DoTryChain() called from ProcessEventLocally()
1488         // returned true but the event was not really processed: this happens
1489         // if a custom handler ignores the request to process the event in this
1490         // handler only and in this case we should skip the post processing
1491         // done in TryAfter() but still return the correct value ourselves to
1492         // indicate whether we did or did not find a handler for this event.
1493         return !event.GetSkipped();
1494     }
1495
1496     // If we still didn't find a handler, propagate the event upwards the
1497     // window chain and/or to the application object.
1498     if ( TryAfter(event) )
1499         return true;
1500
1501
1502     // No handler found anywhere, bail out.
1503     return false;
1504 }
1505
1506 bool wxEvtHandler::ProcessEventLocally(wxEvent& event)
1507 {
1508     // Try the hooks which should be called before our own handlers and this
1509     // handler itself first. Notice that we should not call ProcessEvent() on
1510     // this one as we're already called from it, which explains why we do it
1511     // here and not in DoTryChain()
1512     return TryBeforeAndHere(event) || DoTryChain(event);
1513 }
1514
1515 bool wxEvtHandler::DoTryChain(wxEvent& event)
1516 {
1517     for ( wxEvtHandler *h = GetNextHandler(); h; h = h->GetNextHandler() )
1518     {
1519         // We need to process this event at the level of this handler only
1520         // right now, the pre-/post-processing was either already done by
1521         // ProcessEvent() from which we were called or will be done by it when
1522         // we return.
1523         //
1524         // However we must call ProcessEvent() and not TryHereOnly() because the
1525         // existing code (including some in wxWidgets itself) expects the
1526         // overridden ProcessEvent() in its custom event handlers pushed on a
1527         // window to be called.
1528         //
1529         // So we must call ProcessEvent() but it must not do what it usually
1530         // does. To resolve this paradox we set up a special flag inside the
1531         // object itself to let ProcessEvent() know that it shouldn't do any
1532         // pre/post-processing for this event if it gets it. Note that this
1533         // only applies to this handler, if the event is passed to another one
1534         // by explicitly calling its ProcessEvent(), pre/post-processing should
1535         // be done as usual.
1536         //
1537         // Final complication is that if the implementation of ProcessEvent()
1538         // called wxEvent::DidntHonourProcessOnlyIn() (as the gross hack that
1539         // is wxScrollHelperEvtHandler::ProcessEvent() does) and ignored our
1540         // request to process event in this handler only, we have to compensate
1541         // for it by not processing the event further because this was already
1542         // done by that rogue event handler.
1543         wxEventProcessInHandlerOnly processInHandlerOnly(event, h);
1544         if ( h->ProcessEvent(event) )
1545         {
1546             // Make sure "skipped" flag is not set as the event was really
1547             // processed in this case. Normally it shouldn't be set anyhow but
1548             // make sure just in case the user code does something strange.
1549             event.Skip(false);
1550
1551             return true;
1552         }
1553
1554         if ( !event.ShouldProcessOnlyIn(h) )
1555         {
1556             // Still return true to indicate that no further processing should
1557             // be undertaken but ensure that "skipped" flag is set so that the
1558             // caller knows that the event was not really processed.
1559             event.Skip();
1560
1561             return true;
1562         }
1563     }
1564
1565     return false;
1566 }
1567
1568 bool wxEvtHandler::TryHereOnly(wxEvent& event)
1569 {
1570     // If the event handler is disabled it doesn't process any events
1571     if ( !GetEvtHandlerEnabled() )
1572         return false;
1573
1574     // Handle per-instance dynamic event tables first
1575     if ( m_dynamicEvents && SearchDynamicEventTable(event) )
1576         return true;
1577
1578     // Then static per-class event tables
1579     if ( GetEventHashTable().HandleEvent(event, this) )
1580         return true;
1581
1582 #ifdef wxHAS_CALL_AFTER
1583     // There is an implicit entry for async method calls processing in every
1584     // event handler:
1585     if ( event.GetEventType() == wxEVT_ASYNC_METHOD_CALL &&
1586             event.GetEventObject() == this )
1587     {
1588         static_cast<wxAsyncMethodCallEvent&>(event).Execute();
1589         return true;
1590     }
1591 #endif // wxHAS_CALL_AFTER
1592
1593     // We don't have a handler for this event.
1594     return false;
1595 }
1596
1597 bool wxEvtHandler::SafelyProcessEvent(wxEvent& event)
1598 {
1599 #if wxUSE_EXCEPTIONS
1600     try
1601     {
1602 #endif
1603         return ProcessEvent(event);
1604 #if wxUSE_EXCEPTIONS
1605     }
1606     catch ( ... )
1607     {
1608         // notice that we do it in 2 steps to avoid warnings about possibly
1609         // uninitialized loop variable from some versions of g++ which are not
1610         // smart enough to figure out that GetActive() doesn't throw and so
1611         // that loop will always be initialized
1612         wxEventLoopBase *loop = NULL;
1613         try
1614         {
1615             loop = wxEventLoopBase::GetActive();
1616
1617             if ( !wxTheApp || !wxTheApp->OnExceptionInMainLoop() )
1618             {
1619                 if ( loop )
1620                     loop->Exit();
1621             }
1622             //else: continue running current event loop
1623
1624             return false;
1625         }
1626         catch ( ... )
1627         {
1628             // OnExceptionInMainLoop() threw, possibly rethrowing the same
1629             // exception again: very good, but we still need Exit() to
1630             // be called
1631             if ( loop )
1632                 loop->Exit();
1633             throw;
1634         }
1635     }
1636 #endif // wxUSE_EXCEPTIONS
1637 }
1638
1639 bool wxEvtHandler::SearchEventTable(wxEventTable& table, wxEvent& event)
1640 {
1641     const wxEventType eventType = event.GetEventType();
1642     for ( int i = 0; table.entries[i].m_fn != 0; i++ )
1643     {
1644         const wxEventTableEntry& entry = table.entries[i];
1645         if ( eventType == entry.m_eventType )
1646         {
1647             if ( ProcessEventIfMatchesId(entry, this, event) )
1648                 return true;
1649         }
1650     }
1651
1652     return false;
1653 }
1654
1655 void wxEvtHandler::DoBind(int id,
1656                           int lastId,
1657                           wxEventType eventType,
1658                           wxEventFunctor *func,
1659                           wxObject *userData)
1660 {
1661     wxDynamicEventTableEntry *entry =
1662         new wxDynamicEventTableEntry(eventType, id, lastId, func, userData);
1663
1664     if (!m_dynamicEvents)
1665         m_dynamicEvents = new wxList;
1666
1667     // Insert at the front of the list so most recent additions are found first
1668     m_dynamicEvents->Insert( (wxObject*) entry );
1669
1670     // Make sure we get to know when a sink is destroyed
1671     wxEvtHandler *eventSink = func->GetEvtHandler();
1672     if ( eventSink && eventSink != this )
1673     {
1674         wxEventConnectionRef *evtConnRef = FindRefInTrackerList(eventSink);
1675         if ( evtConnRef )
1676             evtConnRef->IncRef( );
1677         else
1678             new wxEventConnectionRef(this, eventSink);
1679     }
1680 }
1681
1682 bool
1683 wxEvtHandler::DoUnbind(int id,
1684                        int lastId,
1685                        wxEventType eventType,
1686                        const wxEventFunctor& func,
1687                        wxObject *userData)
1688 {
1689     if (!m_dynamicEvents)
1690         return false;
1691
1692     wxList::compatibility_iterator node = m_dynamicEvents->GetFirst();
1693     while (node)
1694     {
1695         wxDynamicEventTableEntry *entry = (wxDynamicEventTableEntry*)node->GetData();
1696
1697         if ((entry->m_id == id) &&
1698             ((entry->m_lastId == lastId) || (lastId == wxID_ANY)) &&
1699             ((entry->m_eventType == eventType) || (eventType == wxEVT_NULL)) &&
1700             entry->m_fn->IsMatching(func) &&
1701             ((entry->m_callbackUserData == userData) || !userData))
1702         {
1703             // Remove connection from tracker node (wxEventConnectionRef)
1704             wxEvtHandler *eventSink = entry->m_fn->GetEvtHandler();
1705             if ( eventSink && eventSink != this )
1706             {
1707                 wxEventConnectionRef *evtConnRef = FindRefInTrackerList(eventSink);
1708                 if ( evtConnRef )
1709                     evtConnRef->DecRef();
1710             }
1711
1712             delete entry->m_callbackUserData;
1713             m_dynamicEvents->Erase( node );
1714             delete entry;
1715             return true;
1716         }
1717         node = node->GetNext();
1718     }
1719     return false;
1720 }
1721
1722 bool wxEvtHandler::SearchDynamicEventTable( wxEvent& event )
1723 {
1724     wxCHECK_MSG( m_dynamicEvents, false,
1725                  wxT("caller should check that we have dynamic events") );
1726
1727     wxList::compatibility_iterator node = m_dynamicEvents->GetFirst();
1728     while (node)
1729     {
1730         wxDynamicEventTableEntry *entry = (wxDynamicEventTableEntry*)node->GetData();
1731
1732         // get next node before (maybe) calling the event handler as it could
1733         // call Disconnect() invalidating the current node
1734         node = node->GetNext();
1735
1736         if ( event.GetEventType() == entry->m_eventType )
1737         {
1738             wxEvtHandler *handler = entry->m_fn->GetEvtHandler();
1739             if ( !handler )
1740                handler = this;
1741             if ( ProcessEventIfMatchesId(*entry, handler, event) )
1742                 return true;
1743         }
1744     }
1745
1746     return false;
1747 }
1748
1749 void wxEvtHandler::DoSetClientObject( wxClientData *data )
1750 {
1751     wxASSERT_MSG( m_clientDataType != wxClientData_Void,
1752                   wxT("can't have both object and void client data") );
1753
1754     if ( m_clientObject )
1755         delete m_clientObject;
1756
1757     m_clientObject = data;
1758     m_clientDataType = wxClientData_Object;
1759 }
1760
1761 wxClientData *wxEvtHandler::DoGetClientObject() const
1762 {
1763     // it's not an error to call GetClientObject() on a window which doesn't
1764     // have client data at all - NULL will be returned
1765     wxASSERT_MSG( m_clientDataType != wxClientData_Void,
1766                   wxT("this window doesn't have object client data") );
1767
1768     return m_clientObject;
1769 }
1770
1771 void wxEvtHandler::DoSetClientData( void *data )
1772 {
1773     wxASSERT_MSG( m_clientDataType != wxClientData_Object,
1774                   wxT("can't have both object and void client data") );
1775
1776     m_clientData = data;
1777     m_clientDataType = wxClientData_Void;
1778 }
1779
1780 void *wxEvtHandler::DoGetClientData() const
1781 {
1782     // it's not an error to call GetClientData() on a window which doesn't have
1783     // client data at all - NULL will be returned
1784     wxASSERT_MSG( m_clientDataType != wxClientData_Object,
1785                   wxT("this window doesn't have void client data") );
1786
1787     return m_clientData;
1788 }
1789
1790 // A helper to find an wxEventConnectionRef object
1791 wxEventConnectionRef *
1792 wxEvtHandler::FindRefInTrackerList(wxEvtHandler *eventSink)
1793 {
1794     for ( wxTrackerNode *node = eventSink->GetFirst(); node; node = node->m_nxt )
1795     {
1796         // we only want wxEventConnectionRef nodes here
1797         wxEventConnectionRef *evtConnRef = node->ToEventConnection();
1798         if ( evtConnRef && evtConnRef->m_src == this )
1799         {
1800             wxASSERT( evtConnRef->m_sink==eventSink );
1801             return evtConnRef;
1802         }
1803     }
1804
1805     return NULL;
1806 }
1807
1808 void wxEvtHandler::OnSinkDestroyed( wxEvtHandler *sink )
1809 {
1810     wxASSERT(m_dynamicEvents);
1811
1812     // remove all connections with this sink
1813     wxList::compatibility_iterator node = m_dynamicEvents->GetFirst(), node_nxt;
1814     while (node)
1815     {
1816         wxDynamicEventTableEntry *entry = (wxDynamicEventTableEntry*)node->GetData();
1817         node_nxt = node->GetNext();
1818
1819         if ( entry->m_fn->GetEvtHandler() == sink )
1820         {
1821             delete entry->m_callbackUserData;
1822             m_dynamicEvents->Erase( node );
1823             delete entry;
1824         }
1825         node = node_nxt;
1826     }
1827 }
1828
1829 #endif // wxUSE_BASE
1830
1831 #if wxUSE_GUI
1832
1833 // Find a window with the focus, that is also a descendant of the given window.
1834 // This is used to determine the window to initially send commands to.
1835 wxWindow* wxFindFocusDescendant(wxWindow* ancestor)
1836 {
1837     // Process events starting with the window with the focus, if any.
1838     wxWindow* focusWin = wxWindow::FindFocus();
1839     wxWindow* win = focusWin;
1840
1841     // Check if this is a descendant of this frame.
1842     // If not, win will be set to NULL.
1843     while (win)
1844     {
1845         if (win == ancestor)
1846             break;
1847         else
1848             win = win->GetParent();
1849     }
1850     if (win == NULL)
1851         focusWin = NULL;
1852
1853     return focusWin;
1854 }
1855
1856 // ----------------------------------------------------------------------------
1857 // wxEventBlocker
1858 // ----------------------------------------------------------------------------
1859
1860 wxEventBlocker::wxEventBlocker(wxWindow *win, wxEventType type)
1861 {
1862     wxCHECK_RET(win, wxT("Null window given to wxEventBlocker"));
1863
1864     m_window = win;
1865
1866     Block(type);
1867     m_window->PushEventHandler(this);
1868 }
1869
1870 wxEventBlocker::~wxEventBlocker()
1871 {
1872     wxEvtHandler *popped = m_window->PopEventHandler(false);
1873     wxCHECK_RET(popped == this,
1874         wxT("Don't push other event handlers into a window managed by wxEventBlocker!"));
1875 }
1876
1877 bool wxEventBlocker::ProcessEvent(wxEvent& event)
1878 {
1879     // should this event be blocked?
1880     for ( size_t i = 0; i < m_eventsToBlock.size(); i++ )
1881     {
1882         wxEventType t = (wxEventType)m_eventsToBlock[i];
1883         if ( t == wxEVT_ANY || t == event.GetEventType() )
1884             return true;   // yes, it should: mark this event as processed
1885     }
1886
1887     return false;
1888 }
1889
1890 #endif // wxUSE_GUI
1891