+// ----------------------------------------------------------------------------
+// region comparision
+// ----------------------------------------------------------------------------
+
+bool wxRegionBase::IsEqual(const wxRegion& region) const
+{
+ if ( m_refData == region.GetRefData() )
+ {
+ // regions are identical, hence equal
+ return true;
+ }
+
+ if ( !m_refData || !region.GetRefData() )
+ {
+ // one, but not both, of the regions is invalid
+ return false;
+ }
+
+ return DoIsEqual(region);
+}