Show Child Window in Task Switcher

How can I make a modeless child dialog (instantiated using CreateDialogParam) show up in the windows task switcher (Alt-Tab strip)? Using the WS_EX_APPWINDOW window style forces the dialog to have a taskbar icon but not in the task switcher.

Solution

Raymond Chen gives the full gory details here: https://devblogs.microsoft.com/oldnewthing/20071008-00/?p=24863

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