Re-added wxQtPointer smart pointer for easier memory management.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@77714 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/qt/private/pointer.h

@@ -0,0 +1,43 @@
+/////////////////////////////////////////////////////////////////////////////
+// Name:        wx/qt/private/pointer.h
+// Author:      Peter Most
+// Copyright:   (c) Peter Most
+// Licence:     wxWindows licence
+/////////////////////////////////////////////////////////////////////////////
+
+#ifndef _WX_QT_POINTER_H_
+#define _WX_QT_POINTER_H_
+
+#include <QtCore/QPointer>
+
+// Extend QPointer with the ability to delete the object in its destructor. The
+// normal behaviour of the QPointer makes sure that this is safe, because if somebody
+// has deleted the object, then data() returns NULL and delete does nothing.
+
+template < typename T >
+class wxQtPointer : public QPointer< T >
+{
+public:
+    inline wxQtPointer()
+        : QPointer< T >()
+    {
+    }
+
+    inline wxQtPointer( T *p )
+        : QPointer< T >( p )
+    {
+    }
+
+    inline wxQtPointer< T > &operator = ( T *p )
+    {
+        QPointer< T >::operator = ( p );
+        return *this;
+    }
+
+    inline ~wxQtPointer()
+    {
+        delete QPointer< T >::data();
+    }
+};
+
+#endif // _WX_QT_POINTER_H_