PRB: App Desktop Toolbars Must Have WS_EX_TOOLWINDOW Style (132965)
The information in this article applies to:
- Microsoft Platform Software Development Kit (SDK) 1.0
This article was previously published under Q132965 SYMPTOMS
A problem can occur when an Application Desktop Toolbar (AppBar) is
registered and the original position is set. The system reserves the
desktop space the AppBar requested by moving all other shell objects and
windows out of that rectangle. The problem is that the system then moves
the AppBar window out of that rectangle as well.
CAUSE
When an AppBar requests some area on the desktop to occupy, the shell
enumerates the windows in the task list and moves those windows outside of
the newly reserved area. If your AppBar window appears in the task list it
too is moved outside of the area.
RESOLUTION
When creating an Application Desktop Toolbar, the AppBar window must have
the WS_EX_TOOLWINDOW window style for the shell to handle the AppBar window
correctly. The WS_EX_TOOLWINDOW style prevents the AppBar window from
appearing in the task list. The WS_EX_PALETTEWINDOW style can also be used
because it includes the WS_EX_TOOLWINDOW style.
STATUS
This behavior is by design.
| Modification Type: | Minor | Last Reviewed: | 7/11/2005 |
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| Keywords: | kbprb kbshell KB132965 |
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