Best way to hide a window from the Alt-Tab program switcher?

Update: According to @donovan, modern days WPF supports this natively, through setting ShowInTaskbar=”False” and Visibility=”Hidden” in the XAML. (I haven’t tested this yet, but nevertheless decided to bump the comment visibility) Original answer: There are two ways of hiding a window from the task switcher in Win32 API: to add the WS_EX_TOOLWINDOW extended window style … Read more