+/*
+ * Helper class to temporarily change an event not to propagate.
+ */
+class WXDLLIMPEXP_BASE wxPropagationDisabler
+{
+public:
+ wxPropagationDisabler(wxEvent& event) : m_event(event)
+ {
+ m_propagationLevelOld = m_event.StopPropagation();
+ }
+
+ ~wxPropagationDisabler()
+ {
+ m_event.ResumePropagation(m_propagationLevelOld);
+ }
+
+private:
+ wxEvent& m_event;
+ int m_propagationLevelOld;
+
+ DECLARE_NO_COPY_CLASS(wxPropagationDisabler)
+};
+
+/*
+ * Another one to temporarily lower propagation level.
+ */
+class WXDLLIMPEXP_BASE wxPropagateOnce
+{
+public:
+ wxPropagateOnce(wxEvent& event) : m_event(event)
+ {
+ wxASSERT_MSG( m_event.m_propagationLevel > 0,
+ _T("shouldn't be used unless ShouldPropagate()!") );
+
+ m_event.m_propagationLevel--;
+ }
+
+ ~wxPropagateOnce()
+ {
+ m_event.m_propagationLevel++;
+ }
+
+private:
+ wxEvent& m_event;
+
+ DECLARE_NO_COPY_CLASS(wxPropagateOnce)
+};
+