add a unit test checking that events are really propagated as they're supposed to

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@58146 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

tests/testprec.h

@@ -27,3 +27,10 @@ class TestAssertFailure { };
     #define WX_ASSERT_FAILS_WITH_ASSERT(cond) CPPUNIT_ASSERT(!(cond))
 #endif
 
+// these functions can be used to hook into wxApp event processing and are
+// currently used by the events propagation test
+typedef int (*FilterEventFunc)(wxEvent&);
+typedef bool (*ProcessEventFunc)(wxEvent&);
+
+extern void SetFilterEventFunc(FilterEventFunc func);
+extern void SetProcessEventFunc(ProcessEventFunc func);