X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/4f6b94a33a3d8779c078740b3eae2090015c838a..12b5f4b4d2d8a07962da7ba3b78c8c1ec2634a67:/src/common/init.cpp

diff --git a/src/common/init.cpp b/src/common/init.cpp
index ee3847634f..d9d3cf0dc7 100644
--- a/src/common/init.cpp
+++ b/src/common/init.cpp
@@ -249,6 +249,44 @@ static bool DoCommonPostInit()
         return false;
     }
 
+#if defined(__WXDEBUG__)
+    // check if event classes implement Clone() correctly
+    // NOTE: the check is done against _all_ event classes which are linked to
+    //       the executable currently running, which are not necessarily all
+    //       wxWidgets event classes.
+    const wxClassInfo *ci = wxClassInfo::GetFirst();
+    for (; ci; ci = ci->GetNext())
+    {
+        // is this class derived from wxEvent?
+        if (!ci->IsKindOf(CLASSINFO(wxEvent)) || wxString(ci->GetClassName()) == "wxEvent")
+            continue;
+
+        if (!ci->IsDynamic())
+        {
+            wxLogWarning("The event class '%s' should have a DECLARE_DYNAMIC_CLASS macro!",
+                         ci->GetClassName());
+            continue;
+        }
+
+        // yes; test if it implements Clone() correctly
+        wxEvent* test = wxDynamicCast(ci->CreateObject(),wxEvent);
+        if (test == NULL)
+        {
+            wxLogWarning("The event class '%s' should have a DECLARE_DYNAMIC_CLASS macro!",
+                         ci->GetClassName());
+            continue;
+        }
+
+        wxEvent* cloned = test->Clone();
+        if (!cloned || cloned->GetClassInfo() != ci)
+            wxLogWarning("The event class '%s' does not correctly implement Clone()!",
+                         ci->GetClassName());
+
+        delete cloned;
+        delete test;
+    }
+#endif
+
     return true;
 }