Museum

 XmuRemoveCloseDisplayHook(Xmu)                     X Version 11 (Release 5)
                                                              6 January 1993


 Name

    XmuRemoveCloseDisplayHook - delete callback

 Syntax


    cc  . . .  -lXmu


    #include <X11/Xmu/CloseHook.h>

    Bool XmuRemoveCloseDisplayHook(dpy, handle, func, arg)
          Display *dpy;
          CloseHook handle;
         int (*func)();
         caddr_t arg;

    Bool XmuLookupCloseDisplayHook(dpy, handle, func, arg)
          Display *dpy;
          CloseHook handle;
          int (*func)();
          caddr_t arg;


 Arguments


    dpy     Specifies the connection to the X server.

    handle  Specifies the callback by id, or NULL.

    func    Specifies the callback by function.

    arg     Specifies the function data to match.


 Description

    The XmuRemoveCloseDisplayHook function deletes a callback that is added
    with XmuAddCloseDisplayHook.  If handle is not NULL, it specifies the
    callback to remove, and the func and arg parameters are ignored.  If han-
    dle is NULL, the first callback found to match the specified func and arg
    will be removed.  Returns True if a callback was removed, otherwise it
    returns False.

    The XmuLookupCloseDisplayHook function determines if a callback is
    installed.  If handle is not NULL, it specifies the callback to look for,
    and the func and arg parameters are ignored.  If handle is NULL, the
    function looks for any callback for the specified func and arg.  Returns
    True if a matching callback exists, otherwise it returns False.

 See also

    XmuAddCloseDisplayHook(Xmu)
    Xlib - C Language X Interface