X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/7af6b69e74fb1a74badcf435ff607836bba0c7e9..f85cfb32fa8f01e7c1924f11a44ca357abb61c8e:/src/common/docview.cpp

diff --git a/src/common/docview.cpp b/src/common/docview.cpp
index 601a15803c..8714a27a85 100644
--- a/src/common/docview.cpp
+++ b/src/common/docview.cpp
@@ -964,22 +964,26 @@ void wxDocManager::OnPreview(wxCommandEvent& WXUNUSED(event))
 #endif // wxUSE_PRINTING_ARCHITECTURE
 }
 
-void wxDocManager::OnUndo(wxCommandEvent& WXUNUSED(event))
+void wxDocManager::OnUndo(wxCommandEvent& event)
 {
     wxDocument *doc = GetCurrentDocument();
     if (!doc)
         return;
     if (doc->GetCommandProcessor())
         doc->GetCommandProcessor()->Undo();
+    else
+        event.Skip();
 }
 
-void wxDocManager::OnRedo(wxCommandEvent& WXUNUSED(event))
+void wxDocManager::OnRedo(wxCommandEvent& event)
 {
     wxDocument *doc = GetCurrentDocument();
     if (!doc)
         return;
     if (doc->GetCommandProcessor())
         doc->GetCommandProcessor()->Redo();
+    else
+        event.Skip();
 }
 
 // Handlers for UI update commands
@@ -1021,17 +1025,29 @@ void wxDocManager::OnUpdateFileSaveAs(wxUpdateUIEvent& event)
 void wxDocManager::OnUpdateUndo(wxUpdateUIEvent& event)
 {
     wxDocument *doc = GetCurrentDocument();
-    event.Enable( (doc && doc->GetCommandProcessor() && doc->GetCommandProcessor()->CanUndo()) );
-    if (doc && doc->GetCommandProcessor())
+    if (!doc)
+        event.Enable(FALSE);
+    else if (!doc->GetCommandProcessor())
+        event.Skip();
+    else
+    {
+        event.Enable( doc->GetCommandProcessor()->CanUndo() );
         doc->GetCommandProcessor()->SetMenuStrings();
+    }
 }
 
 void wxDocManager::OnUpdateRedo(wxUpdateUIEvent& event)
 {
     wxDocument *doc = GetCurrentDocument();
-    event.Enable( (doc && doc->GetCommandProcessor() && doc->GetCommandProcessor()->CanRedo()) );
-    if (doc && doc->GetCommandProcessor())
+    if (!doc)
+        event.Enable(FALSE);
+    else if (!doc->GetCommandProcessor())
+        event.Skip();
+    else
+    {
+        event.Enable( doc->GetCommandProcessor()->CanRedo() );
         doc->GetCommandProcessor()->SetMenuStrings();
+    }
 }
 
 void wxDocManager::OnUpdatePrint(wxUpdateUIEvent& event)
@@ -1972,6 +1988,18 @@ void wxDocPrintout::GetPageInfo(int *minPage, int *maxPage, int *selPageFrom, in
 // File history processor
 // ----------------------------------------------------------------------------
 
+static inline wxChar* MYcopystring(const wxString& s)
+{
+    wxChar* copy = new wxChar[s.length() + 1];
+    return wxStrcpy(copy, s.c_str());
+}
+
+static inline wxChar* MYcopystring(const wxChar* s)
+{
+    wxChar* copy = new wxChar[wxStrlen(s) + 1];
+    return wxStrcpy(copy, s);
+}
+
 wxFileHistory::wxFileHistory(size_t maxFiles, wxWindowID idBase)
 {
     m_fileMaxFiles = maxFiles;
@@ -2042,7 +2070,7 @@ void wxFileHistory::AddFileToHistory(const wxString& file)
     {
         m_fileHistory[i] = m_fileHistory[i-1];
     }
-    m_fileHistory[0] = copystring(file);
+    m_fileHistory[0] = MYcopystring(file);
 
     // this is the directory of the last opened file
     wxString pathCurrent;
@@ -2171,7 +2199,7 @@ void wxFileHistory::Load(wxConfigBase& config)
     wxString historyFile;
     while ((m_fileHistoryN < m_fileMaxFiles) && config.Read(buf, &historyFile) && (historyFile != wxT("")))
     {
-        m_fileHistory[m_fileHistoryN] = copystring((const wxChar*) historyFile);
+        m_fileHistory[m_fileHistoryN] = MYcopystring((const wxChar*) historyFile);
         m_fileHistoryN ++;
         buf.Printf(wxT("file%d"), (int)m_fileHistoryN+1);
         historyFile = wxT("");