Zhiyi Zhang (@zhiyi) commented about dlls/comctl32/toolbar.c:
return 0; default:
With this change, unhandled notifications are all forwarded to hwndNotify and I worry that it might not be the case. Please add tests for [pager notification codes](https://learn.microsoft.com/en-us/windows/win32/controls/bumper-pager-contro...) and [tooltips notification codes](https://learn.microsoft.com/en-us/windows/win32/controls/bumper-tooltip-cont...). Also add a TRACE() when forwarding notifications to hwndNotify.