+// wxCommandEvents and the objects of the derived classes are forwarded to the
+// parent window and so on recursively by default. Using this flag for the
+// given window allows to block this propagation at this window, i.e. prevent
+// the events from being propagated further upwards. The dialogs have this
+// flag on by default.
+#define wxWS_EX_BLOCK_EVENTS 0x00000002
+