Use wxScopedPtr<> instead of explicit calls to "delete"

No real changes, but the code is a bit safer and hopefully more clear.

include/wx/taskbar.h

@@ -59,10 +59,14 @@ public:
     void Destroy();
 
 protected:
+    // Note: only one of the following functions should be overridden, if both
+    // of them are, GetPopupMenu() has the priority, i.e. CreatePopupMenu()
+    // won't be called if GetPopupMenu() returns a non-null pointer.
+
     // creates menu to be displayed when user clicks on the icon
     virtual wxMenu *CreatePopupMenu() { return NULL; }
 
-    // same as CreatePopupMenu but won't destroy the menu
+    // same as CreatePopupMenu but the returned menu won't be destroyed
     virtual wxMenu *GetPopupMenu() { return NULL; }
 
 private:

src/common/taskbarcmn.cpp

@@ -25,6 +25,8 @@
     #include "wx/menu.h"
 #endif
 
+#include "wx/scopedptr.h"
+
 extern WXDLLIMPEXP_DATA_BASE(wxList) wxPendingDelete;
 
 // DLL options compatibility check:
@@ -47,19 +49,18 @@ wxEND_EVENT_TABLE()
 
 void wxTaskBarIconBase::OnRightButtonDown(wxTaskBarIconEvent& WXUNUSED(event))
 {
-    wxMenu *menu = CreatePopupMenu();
-    if (menu)
+    wxScopedPtr<wxMenu> menuDeleter;
+    wxMenu *menu = GetPopupMenu();
+    if ( !menu )
     {
-        PopupMenu(menu);
-        delete menu;
-    }
-    else
-    {
-        menu = GetPopupMenu();
+        menu = CreatePopupMenu();
+        if ( !menu )
+            return;
 
-        if (menu)
-            PopupMenu(menu);
+        menuDeleter.reset(menu);
     }
+
+    PopupMenu(menu);
 }
 
 void wxTaskBarIconBase::Destroy()

src/osx/cocoa/taskbar.mm

@@ -19,6 +19,7 @@
     #include "wx/dcclient.h"
 #endif
 
+#include "wx/scopedptr.h"
 #include "wx/taskbar.h"
 
 #include "wx/osx/private.h"
@@ -102,7 +103,7 @@ protected:
 private:
     wxTaskBarIconDockImpl();
     wxMenu             *m_pMenu;
-    bool m_keepMenu;
+    wxScopedPtr<wxMenu> m_menuDeleter;
 };
 
 class wxTaskBarIconCustomStatusItemImpl;
@@ -231,7 +232,6 @@ wxTaskBarIconDockImpl::wxTaskBarIconDockImpl(wxTaskBarIcon *taskBarIcon)
     wxASSERT_MSG(!sm_dockIcon, wxT("You should never have more than one dock icon!"));
     sm_dockIcon = this;
     m_pMenu = NULL;
-    m_keepMenu = false;
 }
 
 wxTaskBarIconDockImpl::~wxTaskBarIconDockImpl()
@@ -250,28 +250,21 @@ WX_NSMenu wxTaskBarIconDockImpl::OSXGetDockHMenu()
 
 WX_NSMenu wxTaskBarIconDockImpl::OSXDoGetDockHMenu()
 {
-    wxMenu *dockMenu = CreatePopupMenu();
-    bool keepMenu;
+    m_menuDeleter.reset();
+
+    wxMenu *dockMenu = GetPopupMenu();
 
     if(!dockMenu)
     {
-        dockMenu = GetPopupMenu();
+        dockMenu = CreatePopupMenu();
 
         if(!dockMenu)
             return nil;
-    
-        keepMenu = true;
-    }
-    else
-    {
-        keepMenu = false;
-    }
 
-    if(!m_keepMenu)
-        wxDELETE(m_pMenu);
+        m_menuDeleter.reset(dockMenu);
+    }
 
     m_pMenu = dockMenu;
-    m_keepMenu = keepMenu;
     
     m_pMenu->SetInvokingWindow(m_eventWindow);
     
@@ -289,8 +282,7 @@ bool wxTaskBarIconDockImpl::SetIcon(const wxIcon& icon, const wxString& WXUNUSED
 
 bool wxTaskBarIconDockImpl::RemoveIcon()
 {
-    if(!m_keepMenu)
-        wxDELETE(m_pMenu);
+    m_menuDeleter.reset();
 
     m_icon = wxBitmap();
     [[NSApplication sharedApplication] setApplicationIconImage:nil];