Application.MainFormOnTaskbar := False; not hiding application from taskbar

Why setting Application.M开发者_如何学编程ainFormOnTaskbar to False is not preventing the application from showing on taskbar?

Please help. Thanks.

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Because that's not what it does. MainFormOnTaskbar makes it so that the main form shows up as a taskbar button instead of the application itself. If you want to make an app with no presence on the taskbar, see this article.