Usually, window behaviour is controlled using style bits.
The MSDN page on window styles (http://msdn.microsoft.com/en-us/library/windows/desktop/ff700543.aspx) says that the style WS_EX_TOOLWINDOW used to create a floating toolbar window. It also says that such a window will not appear in the taskbar or Alt+Tab switcher.
Can you check to see if your window is created with this style? You can use Window Detective (http://windowdetective.sourceforge.net/) to inspect the window and see what styles it has set.
I think the caveat with that style is that it must be set when the window is created. If set after it’s created, the window will become a “toolbar” window, but it will still show up in the taskbar.
To do this in Smalltalk, call Window>>addExtendedStyle: and pass WsExToolwindow. Do this in your window creation code, before the window is first opened.
From: Using Visual Smalltalk for Windows/Enterprise [mailto:[hidden email]] On Behalf Of Carl Gundel
Sent: Friday, 11 October 2013 3:23 AM
To: [hidden email]
Subject: How to remove a window from the taskbar
Hey all,
I created a floating window that is subordinate to another window. All is working fine, but I also need to remove the floating window from the taskbar so that Alt+Tab does not see the floating window. Any already do this?
Thanks.
-Carl
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