"Guy L. Albertelli" <galberte(a)neo.lrun.com> wrote:
2. From looking at relay traces, Toolbar messages 0x045d and 0x0463 seem to be a pair. They also seem to invoke comctl32.413 which is also undocumented. The relay traces seem to suggest that .413 somehow redirects the message to another Winproc. All windows that process through .413 seem to have the atom for "CC32SubClassInfo" added as a property (GetProp/SetProp). I suspect that this whole thing may be related to the "nativefont" control. There seems to be no ill-effect to the messages not being implemented (except for the annoying fixme). Note that comctl32.413 may also be related to comctl32.410 and .412.
IMO, the undocumented functions comctl32.410 to comctl32.413 are some kind of a subclass manager. They seem to be the functions DefSubclassProc(), SetWindowSubclass(), GetWindowSubclass() and RemoveWindowSubclass() which are documented in the new Windows XP Platform SDK. Regards, Eric Kohl