text: /////////////////////////////////////////////////////////////////////////////
  // Name:        src/common/event.cpp
  // Purpose:     Event classes
  // Author:      Julian Smart
  // Modified by:
  // Created:     01/02/97
  // RCS-ID:      $Id: event.cpp 61982 2009-09-20 21:48:50Z VZ $
  // Copyright:   (c) Julian Smart
  // Licence:     wxWindows licence
  /////////////////////////////////////////////////////////////////////////////
  
  // ============================================================================
  // declarations
  // ============================================================================
  
  // ----------------------------------------------------------------------------
  // headers
  // ----------------------------------------------------------------------------
  
  // For compilers that support precompilation, includes "wx.h".
  #include "wx/wxprec.h"
  
  #ifdef __BORLANDC__
      #pragma hdrstop
  #endif
  
  #include "wx/event.h"
  
  #ifndef WX_PRECOMP
      #include "wx/list.h"
      #include "wx/app.h"
      #include "wx/utils.h"
      #include "wx/stopwatch.h"
      #include "wx/module.h"
  
      #if wxUSE_GUI
          #include "wx/window.h"
          #include "wx/control.h"
          #include "wx/dc.h"
          #include "wx/textctrl.h"
          #include "wx/validate.h"
      #endif // wxUSE_GUI
  #endif
  
  #if wxUSE_BASE
      #include "wx/ptr_scpd.h"
  
      wxDECLARE_SCOPED_PTR(wxEvent, wxEventPtr)
      wxDEFINE_SCOPED_PTR(wxEvent, wxEventPtr)
  #endif // wxUSE_BASE
  
  // ----------------------------------------------------------------------------
  // wxWin macros
  // ----------------------------------------------------------------------------
  
  #if wxUSE_BASE
      IMPLEMENT_DYNAMIC_CLASS(wxEvtHandler, wxObject)
      IMPLEMENT_ABSTRACT_CLASS(wxEvent, wxObject)
  #endif // wxUSE_BASE
  
  #if wxUSE_GUI
      IMPLEMENT_DYNAMIC_CLASS(wxIdleEvent, wxEvent)
      IMPLEMENT_DYNAMIC_CLASS(wxCommandEvent, wxEvent)
      IMPLEMENT_DYNAMIC_CLASS(wxNotifyEvent, wxCommandEvent)
      IMPLEMENT_DYNAMIC_CLASS(wxScrollEvent, wxCommandEvent)
      IMPLEMENT_DYNAMIC_CLASS(wxScrollWinEvent, wxEvent)
      IMPLEMENT_DYNAMIC_CLASS(wxMouseEvent, wxEvent)
      IMPLEMENT_DYNAMIC_CLASS(wxKeyEvent, wxEvent)
      IMPLEMENT_DYNAMIC_CLASS(wxSizeEvent, wxEvent)
      IMPLEMENT_DYNAMIC_CLASS(wxPaintEvent, wxEvent)
      IMPLEMENT_DYNAMIC_CLASS(wxNcPaintEvent, wxEvent)
      IMPLEMENT_DYNAMIC_CLASS(wxEraseEvent, wxEvent)
      IMPLEMENT_DYNAMIC_CLASS(wxMoveEvent, wxEvent)
      IMPLEMENT_DYNAMIC_CLASS(wxFocusEvent, wxEvent)
      IMPLEMENT_DYNAMIC_CLASS(wxChildFocusEvent, wxCommandEvent)
      IMPLEMENT_DYNAMIC_CLASS(wxCloseEvent, wxEvent)
      IMPLEMENT_DYNAMIC_CLASS(wxShowEvent, wxEvent)
      IMPLEMENT_DYNAMIC_CLASS(wxMaximizeEvent, wxEvent)
      IMPLEMENT_DYNAMIC_CLASS(wxIconizeEvent, wxEvent)
      IMPLEMENT_DYNAMIC_CLASS(wxMenuEvent, wxEvent)
      IMPLEMENT_DYNAMIC_CLASS(wxJoystickEvent, wxEvent)
      IMPLEMENT_DYNAMIC_CLASS(wxDropFilesEvent, wxEvent)
      IMPLEMENT_DYNAMIC_CLASS(wxActivateEvent, wxEvent)
      IMPLEMENT_DYNAMIC_CLASS(wxInitDialogEvent, wxEvent)
      IMPLEMENT_DYNAMIC_CLASS(wxSetCursorEvent, wxEvent)
      IMPLEMENT_DYNAMIC_CLASS(wxSysColourChangedEvent, wxEvent)
      IMPLEMENT_DYNAMIC_CLASS(wxDisplayChangedEvent, wxEvent)
      IMPLEMENT_DYNAMIC_CLASS(wxUpdateUIEvent, wxCommandEvent)
      IMPLEMENT_DYNAMIC_CLASS(wxNavigationKeyEvent, wxEvent)
      IMPLEMENT_DYNAMIC_CLASS(wxPaletteChangedEvent, wxEvent)
      IMPLEMENT_DYNAMIC_CLASS(wxQueryNewPaletteEvent, wxEvent)
      IMPLEMENT_DYNAMIC_CLASS(wxWindowCreateEvent, wxEvent)
      IMPLEMENT_DYNAMIC_CLASS(wxWindowDestroyEvent, wxEvent)
      IMPLEMENT_DYNAMIC_CLASS(wxHelpEvent, wxCommandEvent)
      IMPLEMENT_DYNAMIC_CLASS(wxContextMenuEvent, wxCommandEvent)
      IMPLEMENT_DYNAMIC_CLASS(wxMouseCaptureChangedEvent, wxEvent)
      IMPLEMENT_DYNAMIC_CLASS(wxMouseCaptureLostEvent, wxEvent)
      IMPLEMENT_DYNAMIC_CLASS(wxClipboardTextEvent, wxCommandEvent)
  #endif // wxUSE_GUI
  
  #if wxUSE_BASE
  
  const wxEventTable *wxEvtHandler::GetEventTable() const
      { return &wxEvtHandler::sm_eventTable; }
  
  const wxEventTable wxEvtHandler::sm_eventTable =
      { (const wxEventTable *)NULL, &wxEvtHandler::sm_eventTableEntries[0] };
  
  wxEventHashTable &wxEvtHandler::GetEventHashTable() const
      { return wxEvtHandler::sm_eventHashTable; }
  
  wxEventHashTable wxEvtHandler::sm_eventHashTable(wxEvtHandler::sm_eventTable);
  
  const wxEventTableEntry wxEvtHandler::sm_eventTableEntries[] =
      { DECLARE_EVENT_TABLE_ENTRY(wxEVT_NULL, 0, 0, (wxObjectEventFunction)NULL, NULL) };
  
  
  #ifdef __WXDEBUG__
  // Clear up event hash table contents or we can get problems
  // when C++ is cleaning up the static object
  class wxEventTableEntryModule: public wxModule
  {
  DECLARE_DYNAMIC_CLASS(wxEventTableEntryModule)
  public:
      wxEventTableEntryModule() {}
      bool OnInit()
      {
          wxEventHashTable::ReconstructAll();
          return true;
      }
      void OnExit()
      {
          wxEventHashTable::ClearAll();
      }
  };
  IMPLEMENT_DYNAMIC_CLASS(wxEventTableEntryModule, wxModule)
  #endif
  
  // ----------------------------------------------------------------------------
  // global variables
  // ----------------------------------------------------------------------------
  
  // To put pending event handlers
  wxList *wxPendingEvents = (wxList *)NULL;
  
  #if wxUSE_THREADS
      // protects wxPendingEvents list
      wxCriticalSection *wxPendingEventsLocker = (wxCriticalSection *)NULL;
  #endif
  
  #if !WXWIN_COMPATIBILITY_EVENT_TYPES
  
  // common event types are defined here, other event types are defined by the
  // components which use them
  
  const wxEventType wxEVT_FIRST = 10000;
  const wxEventType wxEVT_USER_FIRST = wxEVT_FIRST + 2000;
  
  DEFINE_EVENT_TYPE(wxEVT_NULL)
  DEFINE_EVENT_TYPE(wxEVT_IDLE)
  DEFINE_EVENT_TYPE(wxEVT_SOCKET)
  
  #endif // !WXWIN_COMPATIBILITY_EVENT_TYPES
  
  #endif // wxUSE_BASE
  
  #if wxUSE_GUI
  
  #if !WXWIN_COMPATIBILITY_EVENT_TYPES
  
  DEFINE_EVENT_TYPE(wxEVT_COMMAND_BUTTON_CLICKED)
  DEFINE_EVENT_TYPE(wxEVT_COMMAND_CHECKBOX_CLICKED)
  DEFINE_EVENT_TYPE(wxEVT_COMMAND_CHOICE_SELECTED)
  DEFINE_EVENT_TYPE(wxEVT_COMMAND_LISTBOX_SELECTED)
  DEFINE_EVENT_TYPE(wxEVT_COMMAND_LISTBOX_DOUBLECLICKED)
  DEFINE_EVENT_TYPE(wxEVT_COMMAND_CHECKLISTBOX_TOGGLED)
  DEFINE_EVENT_TYPE(wxEVT_COMMAND_MENU_SELECTED)
  DEFINE_EVENT_TYPE(wxEVT_COMMAND_SLIDER_UPDATED)
  DEFINE_EVENT_TYPE(wxEVT_COMMAND_RADIOBOX_SELECTED)
  DEFINE_EVENT_TYPE(wxEVT_COMMAND_RADIOBUTTON_SELECTED)
  DEFINE_EVENT_TYPE(wxEVT_COMMAND_SCROLLBAR_UPDATED)
  DEFINE_EVENT_TYPE(wxEVT_COMMAND_VLBOX_SELECTED)
  DEFINE_EVENT_TYPE(wxEVT_COMMAND_COMBOBOX_SELECTED)
  DEFINE_EVENT_TYPE(wxEVT_COMMAND_TOOL_RCLICKED)
  DEFINE_EVENT_TYPE(wxEVT_COMMAND_TOOL_ENTER)
  DEFINE_EVENT_TYPE(wxEVT_COMMAND_SPINCTRL_UPDATED)
  
  // Sockets and timers send events, too
  DEFINE_EVENT_TYPE(wxEVT_TIMER)
  
  // Mouse event types
  DEFINE_EVENT_TYPE(wxEVT_LEFT_DOWN)
  DEFINE_EVENT_TYPE(wxEVT_LEFT_UP)
  DEFINE_EVENT_TYPE(wxEVT_MIDDLE_DOWN)
  DEFINE_EVENT_TYPE(wxEVT_MIDDLE_UP)
  DEFINE_EVENT_TYPE(wxEVT_RIGHT_DOWN)
  DEFINE_EVENT_TYPE(wxEVT_RIGHT_UP)
  DEFINE_EVENT_TYPE(wxEVT_MOTION)
  DEFINE_EVENT_TYPE(wxEVT_ENTER_WINDOW)
  DEFINE_EVENT_TYPE(wxEVT_LEAVE_WINDOW)
  DEFINE_EVENT_TYPE(wxEVT_LEFT_DCLICK)
  DEFINE_EVENT_TYPE(wxEVT_MIDDLE_DCLICK)
  DEFINE_EVENT_TYPE(wxEVT_RIGHT_DCLICK)
  DEFINE_EVENT_TYPE(wxEVT_SET_FOCUS)
  DEFINE_EVENT_TYPE(wxEVT_KILL_FOCUS)
  DEFINE_EVENT_TYPE(wxEVT_CHILD_FOCUS)
  DEFINE_EVENT_TYPE(wxEVT_MOUSEWHEEL)
  
  // Non-client mouse events
  DEFINE_EVENT_TYPE(wxEVT_NC_LEFT_DOWN)
  DEFINE_EVENT_TYPE(wxEVT_NC_LEFT_UP)
  DEFINE_EVENT_TYPE(wxEVT_NC_MIDDLE_DOWN)
  DEFINE_EVENT_TYPE(wxEVT_NC_MIDDLE_UP)
  DEFINE_EVENT_TYPE(wxEVT_NC_RIGHT_DOWN)
  DEFINE_EVENT_TYPE(wxEVT_NC_RIGHT_UP)
  DEFINE_EVENT_TYPE(wxEVT_NC_MOTION)
  DEFINE_EVENT_TYPE(wxEVT_NC_ENTER_WINDOW)
  DEFINE_EVENT_TYPE(wxEVT_NC_LEAVE_WINDOW)
  DEFINE_EVENT_TYPE(wxEVT_NC_LEFT_DCLICK)
  DEFINE_EVENT_TYPE(wxEVT_NC_MIDDLE_DCLICK)
  DEFINE_EVENT_TYPE(wxEVT_NC_RIGHT_DCLICK)
  
  // Character input event type
  DEFINE_EVENT_TYPE(wxEVT_CHAR)
  DEFINE_EVENT_TYPE(wxEVT_CHAR_HOOK)
  DEFINE_EVENT_TYPE(wxEVT_NAVIGATION_KEY)
  DEFINE_EVENT_TYPE(wxEVT_KEY_DOWN)
  DEFINE_EVENT_TYPE(wxEVT_KEY_UP)
  #if wxUSE_HOTKEY
  DEFINE_EVENT_TYPE(wxEVT_HOTKEY)
  #endif
  
  // Set cursor event
  DEFINE_EVENT_TYPE(wxEVT_SET_CURSOR)
  
  // wxScrollbar and wxSlider event identifiers
  DEFINE_EVENT_TYPE(wxEVT_SCROLL_TOP)
  DEFINE_EVENT_TYPE(wxEVT_SCROLL_BOTTOM)
  DEFINE_EVENT_TYPE(wxEVT_SCROLL_LINEUP)
  DEFINE_EVENT_TYPE(wxEVT_SCROLL_LINEDOWN)
  DEFINE_EVENT_TYPE(wxEVT_SCROLL_PAGEUP)
  DEFINE_EVENT_TYPE(wxEVT_SCROLL_PAGEDOWN)
  DEFINE_EVENT_TYPE(wxEVT_SCROLL_THUMBTRACK)
  DEFINE_EVENT_TYPE(wxEVT_SCROLL_THUMBRELEASE)
  DEFINE_EVENT_TYPE(wxEVT_SCROLL_CHANGED)
  
  // Scroll events from wxWindow
  DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_TOP)
  DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_BOTTOM)
  DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_LINEUP)
  DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_LINEDOWN)
  DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_PAGEUP)
  DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_PAGEDOWN)
  DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_THUMBTRACK)
  DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_THUMBRELEASE)
  
  // System events
  DEFINE_EVENT_TYPE(wxEVT_SIZE)
  DEFINE_EVENT_TYPE(wxEVT_SIZING)
  DEFINE_EVENT_TYPE(wxEVT_MOVE)
  DEFINE_EVENT_TYPE(wxEVT_MOVING)
  DEFINE_EVENT_TYPE(wxEVT_CLOSE_WINDOW)
  DEFINE_EVENT_TYPE(wxEVT_END_SESSION)
  DEFINE_EVENT_TYPE(wxEVT_QUERY_END_SESSION)
  DEFINE_EVENT_TYPE(wxEVT_HIBERNATE)
  DEFINE_EVENT_TYPE(wxEVT_ACTIVATE_APP)
  DEFINE_EVENT_TYPE(wxEVT_POWER)
  DEFINE_EVENT_TYPE(wxEVT_ACTIVATE)
  DEFINE_EVENT_TYPE(wxEVT_CREATE)
  DEFINE_EVENT_TYPE(wxEVT_DESTROY)
  DEFINE_EVENT_TYPE(wxEVT_SHOW)
  DEFINE_EVENT_TYPE(wxEVT_ICONIZE)
  DEFINE_EVENT_TYPE(wxEVT_MAXIMIZE)
  DEFINE_EVENT_TYPE(wxEVT_MOUSE_CAPTURE_CHANGED)
  DEFINE_EVENT_TYPE(wxEVT_MOUSE_CAPTURE_LOST)
  DEFINE_EVENT_TYPE(wxEVT_PAINT)
  DEFINE_EVENT_TYPE(wxEVT_ERASE_BACKGROUND)
  DEFINE_EVENT_TYPE(wxEVT_NC_PAINT)
  DEFINE_EVENT_TYPE(wxEVT_PAINT_ICON)
  DEFINE_EVENT_TYPE(wxEVT_MENU_OPEN)
  DEFINE_EVENT_TYPE(wxEVT_MENU_CLOSE)
  DEFINE_EVENT_TYPE(wxEVT_MENU_HIGHLIGHT)
  DEFINE_EVENT_TYPE(wxEVT_CONTEXT_MENU)
  DEFINE_EVENT_TYPE(wxEVT_SYS_COLOUR_CHANGED)
  DEFINE_EVENT_TYPE(wxEVT_DISPLAY_CHANGED)
  DEFINE_EVENT_TYPE(wxEVT_SETTING_CHANGED)
  DEFINE_EVENT_TYPE(wxEVT_QUERY_NEW_PALETTE)
  DEFINE_EVENT_TYPE(wxEVT_PALETTE_CHANGED)
  DEFINE_EVENT_TYPE(wxEVT_JOY_BUTTON_DOWN)
  DEFINE_EVENT_TYPE(wxEVT_JOY_BUTTON_UP)
  DEFINE_EVENT_TYPE(wxEVT_JOY_MOVE)
  DEFINE_EVENT_TYPE(wxEVT_JOY_ZMOVE)
  DEFINE_EVENT_TYPE(wxEVT_DROP_FILES)
  DEFINE_EVENT_TYPE(wxEVT_DRAW_ITEM)
  DEFINE_EVENT_TYPE(wxEVT_MEASURE_ITEM)
  DEFINE_EVENT_TYPE(wxEVT_COMPARE_ITEM)
  DEFINE_EVENT_TYPE(wxEVT_INIT_DIALOG)
  DEFINE_EVENT_TYPE(wxEVT_UPDATE_UI)
  
  // Clipboard events
  DEFINE_EVENT_TYPE(wxEVT_COMMAND_TEXT_COPY)
  DEFINE_EVENT_TYPE(wxEVT_COMMAND_TEXT_CUT)
  DEFINE_EVENT_TYPE(wxEVT_COMMAND_TEXT_PASTE)
  
  // Generic command events
  // Note: a click is a higher-level event than button down/up
  DEFINE_EVENT_TYPE(wxEVT_COMMAND_LEFT_CLICK)
  DEFINE_EVENT_TYPE(wxEVT_COMMAND_LEFT_DCLICK)
  DEFINE_EVENT_TYPE(wxEVT_COMMAND_RIGHT_CLICK)
  DEFINE_EVENT_TYPE(wxEVT_COMMAND_RIGHT_DCLICK)
  DEFINE_EVENT_TYPE(wxEVT_COMMAND_SET_FOCUS)
  DEFINE_EVENT_TYPE(wxEVT_COMMAND_KILL_FOCUS)
  DEFINE_EVENT_TYPE(wxEVT_COMMAND_ENTER)
  
  // Help events
  DEFINE_EVENT_TYPE(wxEVT_HELP)
  DEFINE_EVENT_TYPE(wxEVT_DETAILED_HELP)
  
  #endif // !WXWIN_COMPATIBILITY_EVENT_TYPES
  
  #endif // wxUSE_GUI
  
  #if wxUSE_BASE
  
  // ============================================================================
  // implementation
  // ============================================================================
  
  // ----------------------------------------------------------------------------
  // event initialization
  // ----------------------------------------------------------------------------
  
  int wxNewEventType()
  {
      // MT-FIXME
      static int s_lastUsedEventType = wxEVT_FIRST;
  
      return s_lastUsedEventType++;
  }
  
  // ----------------------------------------------------------------------------
  // wxEvent
  // ----------------------------------------------------------------------------
  
  /*
   * General wxWidgets events, covering
   * all interesting things that might happen (button clicking, resizing,
   * setting text in widgets, etc.).
   *
   * For each completely new event type, derive a new event class.
   *
   */
  
  wxEvent::wxEvent(int theId, wxEventType commandType )
  {
      m_eventType = commandType;
      m_eventObject = (wxObject *) NULL;
      m_timeStamp = 0;
      m_id = theId;
      m_skipped = false;
      m_callbackUserData = (wxObject *) NULL;
      m_isCommandEvent = false;
      m_propagationLevel = wxEVENT_PROPAGATE_NONE;
  }
  
  wxEvent::wxEvent(const wxEvent &src)
      : wxObject(src)
      , m_eventObject(src.m_eventObject)
      , m_eventType(src.m_eventType)
      , m_timeStamp(src.m_timeStamp)
      , m_id(src.m_id)
      , m_callbackUserData(src.m_callbackUserData)
      , m_propagationLevel(src.m_propagationLevel)
      , m_skipped(src.m_skipped)
      , m_isCommandEvent(src.m_isCommandEvent)
  {
  }
  
  #endif // wxUSE_BASE
  
  #if wxUSE_GUI
  
  /*
   * Command events
   *
   */
  
  #ifdef __VISUALC__
      // 'this' : used in base member initializer list (for m_commandString)
      #pragma warning(disable:4355)
  #endif
  
  wxCommandEvent::wxCommandEvent(wxEventType commandType, int theId)
                : wxEvent(theId, commandType)
  #if WXWIN_COMPATIBILITY_2_4
                , m_commandString(this)
  #endif
  {
      m_clientData = (char *) NULL;
      m_clientObject = (wxClientData *) NULL;
      m_extraLong = 0;
      m_commandInt = 0;
      m_isCommandEvent = true;
  
      // the command events are propagated upwards by default
      m_propagationLevel = wxEVENT_PROPAGATE_MAX;
  }
  
  #ifdef __VISUALC__
      #pragma warning(default:4355)
  #endif
  
  wxString wxCommandEvent::GetString() const
  {
      if(m_eventType != wxEVT_COMMAND_TEXT_UPDATED || !m_eventObject)
          return m_cmdString;
      else
      {
  #if wxUSE_TEXTCTRL
          wxTextCtrl *txt = wxDynamicCast(m_eventObject, wxTextCtrl);
          if(txt)
              return txt->GetValue();
          else
  #endif // wxUSE_TEXTCTRL
              return m_cmdString;
      }
  }
  
  /*
   * UI update events
   */
  
  #if wxUSE_LONGLONG
  wxLongLong wxUpdateUIEvent::sm_lastUpdate = 0;
  #endif
  
  long wxUpdateUIEvent::sm_updateInterval = 0;
  
  wxUpdateUIMode wxUpdateUIEvent::sm_updateMode = wxUPDATE_UI_PROCESS_ALL;
  
  // Can we update?
  bool wxUpdateUIEvent::CanUpdate(wxWindowBase *win)
  {
      // Don't update if we've switched global updating off
      // and this window doesn't support updates.
      if (win &&
         (GetMode() == wxUPDATE_UI_PROCESS_SPECIFIED &&
         ((win->GetExtraStyle() & wxWS_EX_PROCESS_UI_UPDATES) == 0)))
          return false;
  
      if (sm_updateInterval == -1)
          return false;
  
      if (sm_updateInterval == 0)
          return true;
  
  #if wxUSE_STOPWATCH && wxUSE_LONGLONG
      wxLongLong now = wxGetLocalTimeMillis();
      if (now > (sm_lastUpdate + sm_updateInterval))
      {
          return true;
      }
  
      return false;
  #else
      // If we don't have wxStopWatch or wxLongLong, we
      // should err on the safe side and update now anyway.
      return true;
  #endif
  }
  
  // Reset the update time to provide a delay until the next
  // time we should update
  void wxUpdateUIEvent::ResetUpdateTime()
  {
  #if wxUSE_STOPWATCH && wxUSE_LONGLONG
      if (sm_updateInterval > 0)
      {
          wxLongLong now = wxGetLocalTimeMillis();
          if (now > (sm_lastUpdate + sm_updateInterval))
          {
              sm_lastUpdate = now;
          }
      }
  #endif
  }
  
  /*
   * Idle events
   */
  
  wxIdleMode wxIdleEvent::sm_idleMode = wxIDLE_PROCESS_ALL;
  
  // Can we send an idle event?
  bool wxIdleEvent::CanSend(wxWindow* win)
  {
      // Don't update if we've switched global updating off
      // and this window doesn't support updates.
      if (win &&
         (GetMode() == wxIDLE_PROCESS_SPECIFIED &&
         ((win->GetExtraStyle() & wxWS_EX_PROCESS_IDLE) == 0)))
          return false;
  
      return true;
  }
  
  /*
   * Scroll events
   */
  
  wxScrollEvent::wxScrollEvent(wxEventType commandType,
                               int id,
                               int pos,
                               int orient)
      : wxCommandEvent(commandType, id)
  {
      m_extraLong = orient;
      m_commandInt = pos;
  }
  
  /*
   * ScrollWin events
   */
  
  wxScrollWinEvent::wxScrollWinEvent(wxEventType commandType,
                                     int pos,
                                     int orient)
  {
      m_eventType = commandType;
      m_extraLong = orient;
      m_commandInt = pos;
  }
  
  /*
   * Mouse events
   *
   */
  
  wxMouseEvent::wxMouseEvent(wxEventType commandType)
  {
      m_eventType = commandType;
      m_metaDown = false;
      m_altDown = false;
      m_controlDown = false;
      m_shiftDown = false;
      m_leftDown = false;
      m_rightDown = false;
      m_middleDown = false;
      m_x = 0;
      m_y = 0;
      m_wheelRotation = 0;
      m_wheelDelta = 0;
      m_linesPerAction = 0;
  }
  
  void wxMouseEvent::Assign(const wxMouseEvent& event)
  {
      m_eventType = event.m_eventType;
  
      m_x = event.m_x;
      m_y = event.m_y;
  
      m_leftDown = event.m_leftDown;
      m_middleDown = event.m_middleDown;
      m_rightDown = event.m_rightDown;
  
      m_controlDown = event.m_controlDown;
      m_shiftDown = event.m_shiftDown;
      m_altDown = event.m_altDown;
      m_metaDown = event.m_metaDown;
  
      m_wheelRotation = event.m_wheelRotation;
      m_wheelDelta = event.m_wheelDelta;
      m_linesPerAction = event.m_linesPerAction;
  }
  
  // return true if was a button dclick event
  bool wxMouseEvent::ButtonDClick(int but) const
  {
      switch (but)
      {
          default:
              wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::ButtonDClick"));
              // fall through
  
          case wxMOUSE_BTN_ANY:
              return (LeftDClick() || MiddleDClick() || RightDClick());
  
          case wxMOUSE_BTN_LEFT:
              return LeftDClick();
  
          case wxMOUSE_BTN_MIDDLE:
              return MiddleDClick();
  
          case wxMOUSE_BTN_RIGHT:
              return RightDClick();
      }
  }
  
  // return true if was a button down event
  bool wxMouseEvent::ButtonDown(int but) const
  {
      switch (but)
      {
          default:
              wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::ButtonDown"));
              // fall through
  
          case wxMOUSE_BTN_ANY:
              return (LeftDown() || MiddleDown() || RightDown());
  
          case wxMOUSE_BTN_LEFT:
              return LeftDown();
  
          case wxMOUSE_BTN_MIDDLE:
              return MiddleDown();
  
          case wxMOUSE_BTN_RIGHT:
              return RightDown();
      }
  }
  
  // return true if was a button up event
  bool wxMouseEvent::ButtonUp(int but) const
  {
      switch (but)
      {
          default:
              wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::ButtonUp"));
              // fall through
  
          case wxMOUSE_BTN_ANY:
              return (LeftUp() || MiddleUp() || RightUp());
  
          case wxMOUSE_BTN_LEFT:
              return LeftUp();
  
          case wxMOUSE_BTN_MIDDLE:
              return MiddleUp();
  
          case wxMOUSE_BTN_RIGHT:
              return RightUp();
      }
  }
  
  // return true if the given button is currently changing state
  bool wxMouseEvent::Button(int but) const
  {
      switch (but)
      {
          default:
              wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::Button"));
              // fall through
  
          case wxMOUSE_BTN_ANY:
              return ButtonUp(wxMOUSE_BTN_ANY) ||
                      ButtonDown(wxMOUSE_BTN_ANY) ||
                          ButtonDClick(wxMOUSE_BTN_ANY);
  
          case wxMOUSE_BTN_LEFT:
              return LeftDown() || LeftUp() || LeftDClick();
  
          case wxMOUSE_BTN_MIDDLE:
              return MiddleDown() || MiddleUp() || MiddleDClick();
  
          case wxMOUSE_BTN_RIGHT:
              return RightDown() || RightUp() || RightDClick();
      }
  }
  
  bool wxMouseEvent::ButtonIsDown(int but) const
  {
      switch (but)
      {
          default:
              wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::ButtonIsDown"));
              // fall through
  
          case wxMOUSE_BTN_ANY:
              return LeftIsDown() || MiddleIsDown() || RightIsDown();
  
          case wxMOUSE_BTN_LEFT:
              return LeftIsDown();
  
          case wxMOUSE_BTN_MIDDLE:
              return MiddleIsDown();
  
          case wxMOUSE_BTN_RIGHT:
              return RightIsDown();
      }
  }
  
  int wxMouseEvent::GetButton() const
  {
      for ( int i = 1; i <= 3; i++ )
      {
          if ( Button(i) )
          {
              return i;
          }
      }
  
      return wxMOUSE_BTN_NONE;
  }
  
  // Find the logical position of the event given the DC
  wxPoint wxMouseEvent::GetLogicalPosition(const wxDC& dc) const
  {
      wxPoint pt(dc.DeviceToLogicalX(m_x), dc.DeviceToLogicalY(m_y));
      return pt;
  }
  
  
  /*
   * Keyboard event
   *
   */
  
  wxKeyEvent::wxKeyEvent(wxEventType type)
  {
      m_eventType = type;
      m_shiftDown = false;
      m_controlDown = false;
      m_metaDown = false;
      m_altDown = false;
      m_keyCode = 0;
      m_scanCode = 0;
  #if wxUSE_UNICODE
      m_uniChar = 0;
  #endif
  }
  
  wxKeyEvent::wxKeyEvent(const wxKeyEvent& evt)
      : wxEvent(evt)
  {
      m_x = evt.m_x;
      m_y = evt.m_y;
  
      m_keyCode = evt.m_keyCode;
  
      m_controlDown = evt.m_controlDown;
      m_shiftDown = evt.m_shiftDown;
      m_altDown = evt.m_altDown;
      m_metaDown = evt.m_metaDown;
      m_scanCode = evt.m_scanCode;
      m_rawCode = evt.m_rawCode;
      m_rawFlags = evt.m_rawFlags;
  
  #if wxUSE_UNICODE
      m_uniChar = evt.m_uniChar;
  #endif
  }
  
  #if WXWIN_COMPATIBILITY_2_6
  long wxKeyEvent::KeyCode() const
  {
      return m_keyCode;
  }
  #endif // WXWIN_COMPATIBILITY_2_6
  
  wxWindowCreateEvent::wxWindowCreateEvent(wxWindow *win)
  {
      SetEventType(wxEVT_CREATE);
      SetEventObject(win);
  }
  
  wxWindowDestroyEvent::wxWindowDestroyEvent(wxWindow *win)
  {
      SetEventType(wxEVT_DESTROY);
      SetEventObject(win);
  }
  
  wxChildFocusEvent::wxChildFocusEvent(wxWindow *win)
                   : wxCommandEvent(wxEVT_CHILD_FOCUS)
  {
      SetEventObject(win);
  }
  
  // ----------------------------------------------------------------------------
  // wxHelpEvent
  // ----------------------------------------------------------------------------
  
  /* static */
  wxHelpEvent::Origin wxHelpEvent::GuessOrigin(Origin origin)
  {
      if ( origin == Origin_Unknown )
      {
          // assume that the event comes from the help button if it's not from
          // keyboard and that pressing F1 always results in the help event
          origin = wxGetKeyState(WXK_F1) ? Origin_Keyboard : Origin_HelpButton;
      }
  
      return origin;
  }
  
  #endif // wxUSE_GUI
  
  
  #if wxUSE_BASE
  
  // ----------------------------------------------------------------------------
  // wxEventHashTable
  // ----------------------------------------------------------------------------
  
  static const int EVENT_TYPE_TABLE_INIT_SIZE = 31; // Not too big not too small...
  
  wxEventHashTable* wxEventHashTable::sm_first = NULL;
  
  wxEventHashTable::wxEventHashTable(const wxEventTable &table)
                  : m_table(table),
                    m_rebuildHash(true)
  {
      AllocEventTypeTable(EVENT_TYPE_TABLE_INIT_SIZE);
  
      m_next = sm_first;
      if (m_next)
          m_next->m_previous = this;
      sm_first = this;
  }
  
  wxEventHashTable::~wxEventHashTable()
  {
      if (m_next)
          m_next->m_previous = m_previous;
      if (m_previous)
          m_previous->m_next = m_next;
      if (sm_first == this)
          sm_first = m_next;
  
      Clear();
  }
  
  void wxEventHashTable::Clear()
  {
      size_t i;
      for(i = 0; i < m_size; i++)
      {
          EventTypeTablePointer  eTTnode = m_eventTypeTable[i];
          if (eTTnode)
          {
              delete eTTnode;
          }
      }
  
      // Necessary in order to not invoke the
      // overloaded delete operator when statics are cleaned up
      if (m_eventTypeTable)
          delete[] m_eventTypeTable;
  
      m_eventTypeTable = NULL;
      m_size = 0;
  }
  
  // Clear all tables
  void wxEventHashTable::ClearAll()
  {
      wxEventHashTable* table = sm_first;
      while (table)
      {
          table->Clear();
          table = table->m_next;
      }
  }
  
  // Rebuild all tables if they were cleared by ClearAll
  void wxEventHashTable::ReconstructAll()
  {
      wxEventHashTable* table = sm_first;
      while (table)
      {
          // This will only be true if the event table was cleared.
          // What we do here is basically what the constructor does.
          if(table->m_eventTypeTable == NULL)
          {
              table->AllocEventTypeTable(EVENT_TYPE_TABLE_INIT_SIZE);
              table->m_rebuildHash = true;
          }
          table = table->m_next;
      }
  }
  
  bool wxEventHashTable::HandleEvent(wxEvent &event, wxEvtHandler *self)
  {
      if (m_rebuildHash)
      {
          InitHashTable();
          m_rebuildHash = false;
      }
  
      if (!m_eventTypeTable)
          return false;
  
      // Find all entries for the given event type.
      wxEventType eventType = event.GetEventType();
      const EventTypeTablePointer eTTnode = m_eventTypeTable[eventType % m_size];
      if (eTTnode && eTTnode->eventType == eventType)
      {
          // Now start the search for an event handler
          // that can handle an event with the given ID.
          const wxEventTableEntryPointerArray&
              eventEntryTable = eTTnode->eventEntryTable;
  
          const size_t count = eventEntryTable.GetCount();
          for (size_t n = 0; n < count; n++)
          {
              if ( wxEvtHandler::
                      ProcessEventIfMatches(*eventEntryTable[n], self, event) )
              {
                  return true;
              }
          }
      }
  
      return false;
  }
  
  void wxEventHashTable::InitHashTable()
  {
      // Loop over the event tables and all its base tables.
      const wxEventTable *table = &m_table;
      while (table)
      {
          // Retrieve all valid event handler entries
          const wxEventTableEntry *entry = table->entries;
          while (entry->m_fn != 0)
          {
              // Add the event entry in the Hash.
              AddEntry(*entry);
  
              entry++;
          }
  
          table = table->baseTable;
      }
  
      // Lets free some memory.
      size_t i;
      for(i = 0; i < m_size; i++)
      {
          EventTypeTablePointer  eTTnode = m_eventTypeTable[i];
          if (eTTnode)
          {
              eTTnode->eventEntryTable.Shrink();
          }
      }
  }
  
  void wxEventHashTable::AddEntry(const wxEventTableEntry &entry)
  {
      // This might happen 'accidentally' as the app is exiting
      if (!m_eventTypeTable)
          return;
  
      EventTypeTablePointer *peTTnode = &m_eventTypeTable[entry.m_eventType % m_size];
      EventTypeTablePointer  eTTnode = *peTTnode;
  
      if (eTTnode)
      {
          if (eTTnode->eventType != entry.m_eventType)
          {
              // Resize the table!
              GrowEventTypeTable();
              // Try again to add it.
              AddEntry(entry);
              return;
          }
      }
      else
      {
          eTTnode = new EventTypeTable;
          eTTnode->eventType = entry.m_eventType;
          *peTTnode = eTTnode;
      }
  
      // Fill all hash entries between entry.m_id and entry.m_lastId...
      eTTnode->eventEntryTable.Add(&entry);
  }
  
  void wxEventHashTable::AllocEventTypeTable(size_t size)
  {
      m_eventTypeTable = new EventTypeTablePointer[size];
      memset((void *)m_eventTypeTable, 0, sizeof(EventTypeTablePointer)*size);
      m_size = size;
  }
  
  void wxEventHashTable::GrowEventTypeTable()
  {
      size_t oldSize = m_size;
      EventTypeTablePointer *oldEventTypeTable = m_eventTypeTable;
  
      // TODO: Search the most optimal grow sequence
      AllocEventTypeTable(/* GetNextPrime(oldSize) */oldSize*2+1);
  
      for ( size_t i = 0; i < oldSize; /* */ )
      {
          EventTypeTablePointer  eTToldNode = oldEventTypeTable[i];
          if (eTToldNode)
          {
              EventTypeTablePointer *peTTnode = &m_eventTypeTable[eTToldNode->eventType % m_size];
              EventTypeTablePointer  eTTnode = *peTTnode;
  
              // Check for collision, we don't want any.
              if (eTTnode)
              {
                  GrowEventTypeTable();
                  continue; // Don't increment the counter,
                            // as we still need to add this element.
              }
              else
              {
                  // Get the old value and put it in the new table.
                  *peTTnode = oldEventTypeTable[i];
              }
          }
  
          i++;
      }
  
      delete[] oldEventTypeTable;
  }
  
  
  // ----------------------------------------------------------------------------
  // wxEvtHandler
  // ----------------------------------------------------------------------------
  
  /*
   * Event handler
   */
  
  wxEvtHandler::wxEvtHandler()
  {
      m_nextHandler = (wxEvtHandler *) NULL;
      m_previousHandler = (wxEvtHandler *) NULL;
      m_enabled = true;
      m_dynamicEvents = (wxList *) NULL;
      m_pendingEvents = (wxList *) NULL;
  #if wxUSE_THREADS
  #  if !defined(__VISAGECPP__)
      m_eventsLocker = new wxCriticalSection;
  #  endif
  #endif
  
      // no client data (yet)
      m_clientData = NULL;
      m_clientDataType = wxClientData_None;
  }
  
  wxEvtHandler::~wxEvtHandler()
  {
      // Takes itself out of the list of handlers
      if (m_previousHandler)
          m_previousHandler->m_nextHandler = m_nextHandler;
  
      if (m_nextHandler)
          m_nextHandler->m_previousHandler = m_previousHandler;
  
      if (m_dynamicEvents)
      {
          for ( wxList::iterator it = m_dynamicEvents->begin(),
                                 end = m_dynamicEvents->end();
                it != end;
                ++it )
          {
  #if WXWIN_COMPATIBILITY_EVENT_TYPES
              wxEventTableEntry *entry = (wxEventTableEntry*)*it;
  #else // !WXWIN_COMPATIBILITY_EVENT_TYPES
              wxDynamicEventTableEntry *entry = (wxDynamicEventTableEntry*)*it;
  #endif // WXWIN_COMPATIBILITY_EVENT_TYPES/!WXWIN_COMPATIBILITY_EVENT_TYPES
  
              if (entry->m_callbackUserData)
                  delete entry->m_callbackUserData;
              delete entry;
          }
          delete m_dynamicEvents;
      };
  
      if (m_pendingEvents)
          m_pendingEvents->DeleteContents(true);
      delete m_pendingEvents;
  
  #if wxUSE_THREADS
  #  if !defined(__VISAGECPP__)
      delete m_eventsLocker;
  #  endif
  
      // Remove us from wxPendingEvents if necessary.
      if(wxPendingEventsLocker)
          wxENTER_CRIT_SECT(*wxPendingEventsLocker);
  #endif // wxUSE_THREADS
  
      if ( wxPendingEvents )
      {
          // Delete all occurences of this from the list of pending events
          while (wxPendingEvents->DeleteObject(this)) { } // Do nothing
      }
  
  #if wxUSE_THREADS
      if(wxPendingEventsLocker)
          wxLEAVE_CRIT_SECT(*wxPendingEventsLocker);
  #endif // wxUSE_THREADS
  
      // we only delete object data, not untyped
      if ( m_clientDataType == wxClientData_Object )
          delete m_clientObject;
  }
  
  #if wxUSE_THREADS
  
  bool wxEvtHandler::ProcessThreadEvent(wxEvent& event)
  {
      // check that we are really in a child thread
      wxASSERT_MSG( !wxThread::IsMain(),
                    wxT("use ProcessEvent() in main thread") );
  
      AddPendingEvent(event);
  
      return true;
  }
  
  void wxEvtHandler::ClearEventLocker()
  {
  #if !defined(__VISAGECPP__)
      delete m_eventsLocker;
      m_eventsLocker = NULL;
  #endif
  }
  
  #endif // wxUSE_THREADS
  
  void wxEvtHandler::AddPendingEvent(wxEvent& event)
  {
      // 1) Add event to list of pending events of this event handler
  
      wxEvent *eventCopy = event.Clone();
  
      // we must be able to copy the events here so the event class must
      // implement Clone() properly instead of just providing a NULL stab for it
      wxCHECK_RET( eventCopy,
                   _T("events of this type aren't supposed to be posted") );
  
      wxENTER_CRIT_SECT( Lock() );
  
      if ( !m_pendingEvents )
        m_pendingEvents = new wxList;
  
      m_pendingEvents->Append(eventCopy);
  
      // 2) Add this event handler to list of event handlers that
      //    have pending events.
  
      wxENTER_CRIT_SECT(*wxPendingEventsLocker);
  
      if ( !wxPendingEvents )
          wxPendingEvents = new wxList;
      wxPendingEvents->Append(this);
  
      wxLEAVE_CRIT_SECT(*wxPendingEventsLocker);
  
      wxLEAVE_CRIT_SECT( Lock() );
  
      // 3) Inform the system that new pending events are somewhere,
      //    and that these should be processed in idle time.
      wxWakeUpIdle();
  }
  
  void wxEvtHandler::ProcessPendingEvents()
  {
      // this method is only called by wxApp if this handler does have
      // pending events
      wxCHECK_RET( m_pendingEvents,
                   wxT("Please call wxApp::ProcessPendingEvents() instead") );
  
      wxENTER_CRIT_SECT( Lock() );
  
      // we leave the loop once we have processed all events that were present at
      // the start of ProcessPendingEvents because otherwise we could get into
      // infinite loop if the pending event handler execution resulted in another
      // event being posted
      size_t n = m_pendingEvents->size();
      for ( wxList::compatibility_iterator node = m_pendingEvents->GetFirst();
            node;
            node = m_pendingEvents->GetFirst() )
      {
          {
              wxEventPtr event(wx_static_cast(wxEvent *, node->GetData()));
  
              // It's important we remove event from list before processing it.
              // Else a nested event loop, for example from a modal dialog, might
              // process the same event again.
  
              m_pendingEvents->Erase(node);
  
              wxLEAVE_CRIT_SECT( Lock() );
  
              ProcessEvent(*event);
          } // delete the event at this block exit, before re-locking our
            // critical section, to avoid deadlocks if the event dtor locks
            // something else itself (see #10790)
  
          wxENTER_CRIT_SECT( Lock() );
  
          if ( --n == 0 )
              break;
      }
  
      wxLEAVE_CRIT_SECT( Lock() );
  }
  
  /*
   * Event table stuff
   */
  /* static */ bool
  wxEvtHandler::ProcessEventIfMatches(const wxEventTableEntryBase& entry,
                                      wxEvtHandler *handler,
                                      wxEvent& event)
  {
      int tableId1 = entry.m_id,
          tableId2 = entry.m_lastId;
  
      // match only if the event type is the same and the id is either -1 in
      // the event table (meaning "any") or the event id matches the id
      // specified in the event table either exactly or by falling into
      // range between first and last
      if ((tableId1 == wxID_ANY) ||
          (tableId2 == wxID_ANY && tableId1 == event.GetId()) ||
          (tableId2 != wxID_ANY &&
           (event.GetId() >= tableId1 && event.GetId() <= tableId2)))
      {
          event.Skip(false);
          event.m_callbackUserData = entry.m_callbackUserData;
  
  #if wxUSE_EXCEPTIONS
          if ( wxTheApp )
          {
              // call the handler via wxApp method which allows the user to catch
              // any exceptions which may be thrown by any handler in the program
              // in one place
              wxTheApp->HandleEvent(handler, (wxEventFunction)entry.m_fn, event);
          }
          else
  #endif // wxUSE_EXCEPTIONS
          {
              // no need for an extra virtual function call
              (handler->*((wxEventFunction) (entry.m_fn)))(event);
          }
  
          if (!event.GetSkipped())
              return true;
      }
  
      return false;
  }
  
  bool wxEvtHandler::TryParent(wxEvent& event)
  {
      if ( wxTheApp && (this != wxTheApp) )
      {
          // Special case: don't pass wxEVT_IDLE to wxApp, since it'll always
          // swallow it. wxEVT_IDLE is sent explicitly to wxApp so it will be
          // processed appropriately via SearchEventTable.
          if ( event.GetEventType() != wxEVT_IDLE )
          {
              if ( wxTheApp->ProcessEvent(event) )
                  return true;
          }
      }
  
      return false;
  }
  
  bool wxEvtHandler::ProcessEvent(wxEvent& event)
  {
      // allow the application to hook into event processing
      if ( wxTheApp )
      {
          int rc = wxTheApp->FilterEvent(event);
          if ( rc != -1 )
          {
              wxASSERT_MSG( rc == 1 || rc == 0,
                            _T("unexpected wxApp::FilterEvent return value") );
  
              return rc != 0;
          }
          //else: proceed normally
      }
  
      // An event handler can be enabled or disabled
      if ( GetEvtHandlerEnabled() )
      {
          // if we have a validator, it has higher priority than our own event
          // table
          if ( TryValidator(event) )
              return true;
  
          // Handle per-instance dynamic event tables first
          if ( m_dynamicEvents && SearchDynamicEventTable(event) )
              return true;
  
          // Then static per-class event tables
          if ( GetEventHashTable().HandleEvent(event, this) )
              return true;
      }
  
      // Try going down the event handler chain
      if ( GetNextHandler() )
      {
          if ( GetNextHandler()->ProcessEvent(event) )
              return true;
      }
  
      // Finally propagate the event upwards the window chain and/or to the
      // application object as necessary
      return TryParent(event);
  }
  
  
  bool wxEvtHandler::SearchEventTable(wxEventTable& table, wxEvent& event)
  {
      const wxEventType eventType = event.GetEventType();
      for ( int i = 0; table.entries[i].m_fn != 0; i++ )
      {
          const wxEventTableEntry& entry = table.entries[i];
          if ( eventType == entry.m_eventType )
          {
              if ( ProcessEventIfMatches(entry, this, event) )
                  return true;
          }
      }
  
      return false;
  }
  
  void wxEvtHandler::Connect( int id, int lastId,
                              int eventType,
                              wxObjectEventFunction func,
                              wxObject *userData,
                              wxEvtHandler* eventSink )
  {
  #if WXWIN_COMPATIBILITY_EVENT_TYPES
      wxEventTableEntry *entry = new wxEventTableEntry;
      entry->m_eventType = eventType;
      entry->m_id = id;
      entry->m_lastId = lastId;
      entry->m_fn = func;
      entry->m_callbackUserData = userData;
  #else // !WXWIN_COMPATIBILITY_EVENT_TYPES
      wxDynamicEventTableEntry *entry =
          new wxDynamicEventTableEntry(eventType, id, lastId, func, userData, eventSink);
  #endif // WXWIN_COMPATIBILITY_EVENT_TYPES/!WXWIN_COMPATIBILITY_EVENT_TYPES
  
      if (!m_dynamicEvents)
          m_dynamicEvents = new wxList;
  
      // Insert at the front of the list so most recent additions are found first
      m_dynamicEvents->Insert( (wxObject*) entry );
  }
  
  bool wxEvtHandler::Disconnect( int id, int lastId, wxEventType eventType,
                    wxObjectEventFunction func,
                    wxObject *userData,
                    wxEvtHandler* eventSink )
  {
      if (!m_dynamicEvents)
          return false;
  
      wxList::compatibility_iterator node = m_dynamicEvents->GetFirst();
      while (node)
      {
  #if WXWIN_COMPATIBILITY_EVENT_TYPES
              wxEventTableEntry *entry = (wxEventTableEntry*)node->GetData();
  #else // !WXWIN_COMPATIBILITY_EVENT_TYPES
              wxDynamicEventTableEntry *entry = (wxDynamicEventTableEntry*)node->GetData();
  #endif // WXWIN_COMPATIBILITY_EVENT_TYPES/!WXWIN_COMPATIBILITY_EVENT_TYPES
  
          if ((entry->m_id == id) &&
              ((entry->m_lastId == lastId) || (lastId == wxID_ANY)) &&
              ((entry->m_eventType == eventType) || (eventType == wxEVT_NULL)) &&
              ((entry->m_fn == func) || (func == (wxObjectEventFunction)NULL)) &&
              ((entry->m_eventSink == eventSink) || (eventSink == (wxEvtHandler*)NULL)) &&
              ((entry->m_callbackUserData == userData) || (userData == (wxObject*)NULL)))
          {
              if (entry->m_callbackUserData)
                  delete entry->m_callbackUserData;
              m_dynamicEvents->Erase( node );
              delete entry;
              return true;
          }
          node = node->GetNext();
      }
      return false;
  }
  
  bool wxEvtHandler::SearchDynamicEventTable( wxEvent& event )
  {
      wxCHECK_MSG( m_dynamicEvents, false,
                   wxT("caller should check that we have dynamic events") );
  
      wxList::compatibility_iterator node = m_dynamicEvents->GetFirst();
      while (node)
      {
  #if WXWIN_COMPATIBILITY_EVENT_TYPES
          wxEventTableEntry *entry = (wxEventTableEntry*)node->GetData();
  #else // !WXWIN_COMPATIBILITY_EVENT_TYPES
          wxDynamicEventTableEntry *entry = (wxDynamicEventTableEntry*)node->GetData();
  #endif // WXWIN_COMPATIBILITY_EVENT_TYPES/!WXWIN_COMPATIBILITY_EVENT_TYPES
  
          // get next node before (maybe) calling the event handler as it could
          // call Disconnect() invalidating the current node
          node = node->GetNext();
  
          if ((event.GetEventType() == entry->m_eventType) && (entry->m_fn != 0))
          {
              wxEvtHandler *handler =
  #if !WXWIN_COMPATIBILITY_EVENT_TYPES
                                      entry->m_eventSink ? entry->m_eventSink
                                                         :
  #endif
                                                           this;
  
              if ( ProcessEventIfMatches(*entry, handler, event) )
              {
                  return true;
              }
          }
      }
  
      return false;
  }
  
  void wxEvtHandler::DoSetClientObject( wxClientData *data )
  {
      wxASSERT_MSG( m_clientDataType != wxClientData_Void,
                    wxT("can't have both object and void client data") );
  
      if ( m_clientObject )
          delete m_clientObject;
  
      m_clientObject = data;
      m_clientDataType = wxClientData_Object;
  }
  
  wxClientData *wxEvtHandler::DoGetClientObject() const
  {
      // it's not an error to call GetClientObject() on a window which doesn't
      // have client data at all - NULL will be returned
      wxASSERT_MSG( m_clientDataType != wxClientData_Void,
                    wxT("this window doesn't have object client data") );
  
      return m_clientObject;
  }
  
  void wxEvtHandler::DoSetClientData( void *data )
  {
      wxASSERT_MSG( m_clientDataType != wxClientData_Object,
                    wxT("can't have both object and void client data") );
  
      m_clientData = data;
      m_clientDataType = wxClientData_Void;
  }
  
  void *wxEvtHandler::DoGetClientData() const
  {
      // it's not an error to call GetClientData() on a window which doesn't have
      // client data at all - NULL will be returned
      wxASSERT_MSG( m_clientDataType != wxClientData_Object,
                    wxT("this window doesn't have void client data") );
  
      return m_clientData;
  }
  
  #endif // wxUSE_BASE
  
  #if wxUSE_GUI
  
  // Find a window with the focus, that is also a descendant of the given window.
  // This is used to determine the window to initially send commands to.
  wxWindow* wxFindFocusDescendant(wxWindow* ancestor)
  {
      // Process events starting with the window with the focus, if any.
      wxWindow* focusWin = wxWindow::FindFocus();
      wxWindow* win = focusWin;
  
      // Check if this is a descendant of this frame.
      // If not, win will be set to NULL.
      while (win)
      {
          if (win == ancestor)
              break;
          else
              win = win->GetParent();
      }
      if (win == (wxWindow*) NULL)
          focusWin = (wxWindow*) NULL;
  
      return focusWin;
  }
  
  #endif // wxUSE_GUI
  