X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/f97500b80d12d8bbb7bc8162e9b21374b74ac163..eb729cd37a2b6e81fc88a7edbeb7624a5c87a486:/include/wx/event.h

diff --git a/include/wx/event.h b/include/wx/event.h
index 49c7f58471..b96e4458be 100644
--- a/include/wx/event.h
+++ b/include/wx/event.h
@@ -359,8 +359,10 @@ 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 +374,6 @@ 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 +1284,35 @@ 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)