compilation fix -- a better way

[wxWidgets.git] / include / wx / event.h

diff --git a/include/wx/event.h b/include/wx/event.h
index 49c7f58471e7559786b9db8462464d8cf230d220..cedaf922eb274300ee738c656cdbf4862cdde054 100644 (file)
--- a/include/wx/event.h
+++ b/include/wx/event.h
@@ -230,20 +230,21 @@ BEGIN_DECLARE_EVENT_TYPES()
     DECLARE_EVENT_TYPE(wxEVT_POPUP_MENU_INIT, 423)
     DECLARE_EVENT_TYPE(wxEVT_CONTEXT_MENU, 424)
     DECLARE_EVENT_TYPE(wxEVT_SYS_COLOUR_CHANGED, 425)
-    DECLARE_EVENT_TYPE(wxEVT_SETTING_CHANGED, 426)
-    DECLARE_EVENT_TYPE(wxEVT_QUERY_NEW_PALETTE, 427)
-    DECLARE_EVENT_TYPE(wxEVT_PALETTE_CHANGED, 428)
-    DECLARE_EVENT_TYPE(wxEVT_JOY_BUTTON_DOWN, 429)
-    DECLARE_EVENT_TYPE(wxEVT_JOY_BUTTON_UP, 430)
-    DECLARE_EVENT_TYPE(wxEVT_JOY_MOVE, 431)
-    DECLARE_EVENT_TYPE(wxEVT_JOY_ZMOVE, 432)
-    DECLARE_EVENT_TYPE(wxEVT_DROP_FILES, 433)
-    DECLARE_EVENT_TYPE(wxEVT_DRAW_ITEM, 434)
-    DECLARE_EVENT_TYPE(wxEVT_MEASURE_ITEM, 435)
-    DECLARE_EVENT_TYPE(wxEVT_COMPARE_ITEM, 436)
-    DECLARE_EVENT_TYPE(wxEVT_INIT_DIALOG, 437)
-    DECLARE_EVENT_TYPE(wxEVT_IDLE, 438)
-    DECLARE_EVENT_TYPE(wxEVT_UPDATE_UI, 439)
+    DECLARE_EVENT_TYPE(wxEVT_DISPLAY_CHANGED, 426)
+    DECLARE_EVENT_TYPE(wxEVT_SETTING_CHANGED, 427)
+    DECLARE_EVENT_TYPE(wxEVT_QUERY_NEW_PALETTE, 428)
+    DECLARE_EVENT_TYPE(wxEVT_PALETTE_CHANGED, 429)
+    DECLARE_EVENT_TYPE(wxEVT_JOY_BUTTON_DOWN, 430)
+    DECLARE_EVENT_TYPE(wxEVT_JOY_BUTTON_UP, 431)
+    DECLARE_EVENT_TYPE(wxEVT_JOY_MOVE, 432)
+    DECLARE_EVENT_TYPE(wxEVT_JOY_ZMOVE, 433)
+    DECLARE_EVENT_TYPE(wxEVT_DROP_FILES, 434)
+    DECLARE_EVENT_TYPE(wxEVT_DRAW_ITEM, 435)
+    DECLARE_EVENT_TYPE(wxEVT_MEASURE_ITEM, 436)
+    DECLARE_EVENT_TYPE(wxEVT_COMPARE_ITEM, 437)
+    DECLARE_EVENT_TYPE(wxEVT_INIT_DIALOG, 438)
+    DECLARE_EVENT_TYPE(wxEVT_IDLE, 439)
+    DECLARE_EVENT_TYPE(wxEVT_UPDATE_UI, 440)
 
         // Generic command events
         // Note: a click is a higher-level event than button down/up
@@ -359,8 +360,10 @@ public:
     // exists only for optimization purposes.
     bool IsCommandEvent() const { return m_isCommandEvent; }
 
-    // specialized clone function since it is done a lot
-    virtual wxEvent *Clone() const { return new wxEvent(*this); }
+    // this function is used to create a copy of the event polymorphically and
+    // all derived classes must implement it because otherwise wxPostEvent()
+    // for them wouldn't work (it needs to do a copy of the event)
+    virtual wxEvent *Clone() const = 0;
 
 public:
     wxObject*         m_eventObject;
@@ -372,9 +375,6 @@ public:
     bool              m_isCommandEvent;
 
 private:
-    // normally copying the events is a bad idea, so disable this
-    wxEvent& operator=(const wxEvent&);
-
     DECLARE_ABSTRACT_CLASS(wxEvent)
 };
 
@@ -1285,18 +1285,35 @@ class WXDLLEXPORT wxDropFilesEvent : public wxEvent
 public:
     int       m_noFiles;
     wxPoint   m_pos;
-    wxString* m_files;        // Memory (de)allocated by code calling ProcessEvent
+    wxString* m_files;
 
     wxDropFilesEvent(wxEventType type = wxEVT_NULL,
                      int noFiles = 0,
                      wxString *files = (wxString *) NULL)
         { m_eventType = type; m_noFiles = noFiles; m_files = files; }
 
+    // we need a copy ctor to avoid deleting m_files pointer twice
+    wxDropFilesEvent(const wxDropFilesEvent& other)
+        : m_pos(other.m_pos)
+    {
+        m_noFiles = other.m_noFiles;
+        m_files = new wxString[m_noFiles];
+        for ( int n = 0; n < m_noFiles; n++ )
+        {
+            m_files[n] = other.m_files[n];
+        }
+    }
+
+    virtual ~wxDropFilesEvent()
+    {
+        delete [] m_files;
+    }
+
     wxPoint GetPosition() const { return m_pos; }
     int GetNumberOfFiles() const { return m_noFiles; }
     wxString *GetFiles() const { return m_files; }
 
-    virtual wxEvent *Clone() const { wxFAIL_MSG("error"); return NULL; }
+    virtual wxEvent *Clone() const { return new wxDropFilesEvent(*this); }
 
 private:
     DECLARE_DYNAMIC_CLASS(wxDropFilesEvent)
@@ -1364,6 +1381,21 @@ private:
     DECLARE_DYNAMIC_CLASS(wxSysColourChangedEvent)
 };
 
+/*
+ wxEVT_DISPLAY_CHANGED
+ */
+class WXDLLEXPORT wxDisplayChangedEvent : public wxEvent
+{
+private:
+    DECLARE_DYNAMIC_CLASS(wxDisplayChangedEvent)
+
+public:
+    wxDisplayChangedEvent()
+        { m_eventType = wxEVT_DISPLAY_CHANGED; }
+
+    virtual wxEvent *Clone() const { return new wxDisplayChangedEvent(*this); }
+};
+
 /*
  wxEVT_PALETTE_CHANGED
  */
@@ -1883,6 +1915,7 @@ typedef void (wxEvtHandler::*wxJoystickEventFunction)(wxJoystickEvent&);
 typedef void (wxEvtHandler::*wxDropFilesEventFunction)(wxDropFilesEvent&);
 typedef void (wxEvtHandler::*wxInitDialogEventFunction)(wxInitDialogEvent&);
 typedef void (wxEvtHandler::*wxSysColourChangedFunction)(wxSysColourChangedEvent&);
+typedef void (wxEvtHandler::*wxDisplayChangedFunction)(wxDisplayChangedEvent&);
 typedef void (wxEvtHandler::*wxUpdateUIEventFunction)(wxUpdateUIEvent&);
 typedef void (wxEvtHandler::*wxIdleEventFunction)(wxIdleEvent&);
 typedef void (wxEvtHandler::*wxCloseEventFunction)(wxCloseEvent&);
@@ -1952,6 +1985,7 @@ typedef void (wxEvtHandler::*wxContextMenuEventFunction)(wxContextMenuEvent&);
 #define EVT_DROP_FILES(func)  DECLARE_EVENT_TABLE_ENTRY( wxEVT_DROP_FILES, -1, -1, (wxObjectEventFunction) (wxEventFunction) (wxDropFilesEventFunction) & func, (wxObject *) NULL ),
 #define EVT_INIT_DIALOG(func)  DECLARE_EVENT_TABLE_ENTRY( wxEVT_INIT_DIALOG, -1, -1, (wxObjectEventFunction) (wxEventFunction) (wxInitDialogEventFunction) & func, (wxObject *) NULL ),
 #define EVT_SYS_COLOUR_CHANGED(func)  DECLARE_EVENT_TABLE_ENTRY( wxEVT_SYS_COLOUR_CHANGED, -1, -1, (wxObjectEventFunction) (wxEventFunction) (wxSysColourChangedFunction) & func, (wxObject *) NULL ),
+#define EVT_DISPLAY_CHANGED(func)  DECLARE_EVENT_TABLE_ENTRY( wxEVT_DISPLAY_CHANGED, -1, -1, (wxObjectEventFunction) (wxEventFunction) (wxDisplayChangedFunction) & func, (wxObject *) NULL ),
 #define EVT_SHOW(func) DECLARE_EVENT_TABLE_ENTRY( wxEVT_SHOW, -1, -1, (wxObjectEventFunction) (wxEventFunction) (wxShowEventFunction) & func, (wxObject *) NULL ),
 #define EVT_MAXIMIZE(func) DECLARE_EVENT_TABLE_ENTRY( wxEVT_MAXIMIZE, -1, -1, (wxObjectEventFunction) (wxEventFunction) (wxMaximizeEventFunction) & func, (wxObject *) NULL ),
 #define EVT_ICONIZE(func) DECLARE_EVENT_TABLE_ENTRY( wxEVT_ICONIZE, -1, -1, (wxObjectEventFunction) (wxEventFunction) (wxIconizeEventFunction) & func, (wxObject *) NULL ),