Ralf Habacker ralf.habacker@freenet.de writes:
On native Windows atoms from RegisterClass are in the same atom table as atoms registered by clipboard formats and the api function GetClipboardFormatName() is the official way to get them. You may check this with the test app from bug https://bugs.winehq.org/show_bug.cgi?id=46180
This should be part of the test, i.e. you should check that the atom can be found with GetClipboardFormatName() before the class is unregistered.