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NAME
     DtWsmAddCurrentWorkspaceCallback -  add  a  callback  to  be
     called when the current workspace changes

SYNOPSIS
     #include <Dt/Wsm.h>
     DtWsmCBContext
     DtWsmAddCurrentWorkspaceCallback(Widget widget,
                                      DtWsmWsChangeProc ws_change,
                                      Pointer client_data);

DESCRIPTION
     The DtWsmAddCurrentWorkspaceCallback() function registers an
     application  function  to  be  called when the CDE workspace
     manager, dtwm(1), switches to a new workspace.

     The workspace manager sends the new current  workspace  name
     to the DtWsmWsChangeProc callback.

     The widget argument is a realized widget.

     The ws_change argument is the procedure to  be  called  when
     the workspace changes.

     The client_data argument points to arbitrary client data  to
     be passed back to ws_change.

     The header defines the DtWsmWsChangeProc callback  prototype
     as follows:

          typedef void (*DtWsmWsChangeProc)(Widget widget,
                                            Atom aWorkspace,
                                            Pointer client_data);

     The widget argument is the ID of the widget to be registered
     with the callback.

     The aWorkspace argument is  the  name  of  the  new  current
     workspace (converted to an X atom).

     The client_data argument points to the  client  data  to  be
     registered with the callback.

RETURN VALUE
     Upon successful  completion,  the  DtWsmAddCurrentWorkspace-
     Callback()  function  returns a workspace callback registra-
     tion context.

APPLICATION USAGE
     The DtWsmAddCurrentWorkspaceCallback()  function  returns  a
     registration context that the application must save in order

     to remove this  callback  later.   DtWsmAddCurrentWorkspace-
     Callback()  requires a window; thus, a gadget is not accept-
     able for the widget argument.  The DtWsmRemoveWorkspaceCall-
     back(3)  function needs a registration context to remove the
     callback.

SEE ALSO
     DtWsm(5), dtwm(1), DtWsmRemoveWorkspaceCallback(3).

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