SHAppBarMessage


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SHAppBarMessage
WINSHELLAPI UINT APIENTRY SHAppBarMessage(
    DWORD dwMessage, 
    PAPPBARDATA pData
); 
Sends an appbar message to the system.
Returns a message-dependent value. For more information, see the Microsoft Platform SDK documentation for the appbar message sent.

dwMessage
Appbar message value to send. This parameter can be one of the following values:

ABM_ACTIVATE Notifies the system that an appbar has been activated.

ABM_GETAUTOHIDEBAR Retrieves the handle to the autohide appbar associated with a particular edge of the screen.

ABM_GETSTATE Retrieves the autohide and always-on-top states of the Windows taskbar.

ABM_GETTASKBARPOS Retrieves the bounding rectangle of the Windows taskbar.

ABM_NEW Registers a new appbar and specifies the message identifier that the system should use to send notification messages to the appbar.

ABM_QUERYPOS Requests a size and screen position for an appbar.

ABM_REMOVE Unregisters an appbar, removing the bar from the system's internal list.

ABM_SETAUTOHIDEBAR Registers or unregisters an autohide appbar for an edge of the screen.

ABM_SETPOS Sets the size and screen position of an appbar.

ABM_WINDOWPOSCHANGED Notifies the system when an appbar's position has changed.

pData
Address of an APPBARDATA structure. The content of the structure depends on the value set in the dwMessage parameter.

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ABM_ACTIVATE	Notifies the system that an appbar has been activated.
ABM_GETAUTOHIDEBAR	Retrieves the handle to the autohide appbar associated with a particular edge of the screen.
ABM_GETSTATE	Retrieves the autohide and always-on-top states of the Windows taskbar.
ABM_GETTASKBARPOS	Retrieves the bounding rectangle of the Windows taskbar.
ABM_NEW	Registers a new appbar and specifies the message identifier that the system should use to send notification messages to the appbar.
ABM_QUERYPOS	Requests a size and screen position for an appbar.
ABM_REMOVE	Unregisters an appbar, removing the bar from the system's internal list.
ABM_SETAUTOHIDEBAR	Registers or unregisters an autohide appbar for an edge of the screen.
ABM_SETPOS	Sets the size and screen position of an appbar.
ABM_WINDOWPOSCHANGED	Notifies the system when an appbar's position has changed.