rom/intuition/pubscreenstatus.c

   1 /*
   2     Copyright  1995-2010, The AROS Development Team. All rights reserved.
   3     Copyright  2001-2003, The MorphOS Development Team. All Rights Reserved.
   4     $Id$
   5 */
   6
   7 #include "intuition_intern.h"
   8
   9 /*****************************************************************************
  10
  11     NAME */
  12 #include <proto/intuition.h>
  13
  14     AROS_LH2(UWORD, PubScreenStatus,
  15
  16 /*  SYNOPSIS */
  17          AROS_LHA(struct Screen *, Scr        , A0),
  18          AROS_LHA(UWORD          , StatusFlags, D0),
  19
  20 /*  LOCATION */
  21          struct IntuitionBase *, IntuitionBase, 92, Intuition)
  22
  23 /*  FUNCTION
  24
  25     Change the status flags for a given public screen.
  26
  27     INPUTS
  28
  29     Scr          --  The screen the flags of which to change.
  30     StatusFlags  --  The new values for the flags, see <intuition/screens.h>
  31                      for further information on the flag bits.
  32
  33     RESULT
  34
  35     Clears bit 0 if the screen wasn't public or if it was impossible
  36     to make private (PSNF_PRIVATE) as visitor windows are open on it.
  37     The other bits in the return value are reserved for future use.
  38
  39     NOTES
  40
  41     EXAMPLE
  42
  43     BUGS
  44
  45     SEE ALSO
  46
  47     OpenScreen()
  48
  49     INTERNALS
  50
  51     HISTORY
  52
  53 *****************************************************************************/
  54 {
  55     AROS_LIBFUNC_INIT
  56
  57     ULONG  retval;
  58
  59     SANITY_CHECKR(Scr,FALSE)
  60
  61     LockPubScreenList();
  62
  63     if
  64     (
  65         (GetPrivScreen(Scr)->pubScrNode == NULL)
  66         ||
  67         (
  68             (StatusFlags & PSNF_PRIVATE)
  69             &&
  70             (GetPrivScreen(Scr)->pubScrNode->psn_VisitorCount != 0)
  71         )
  72     )
  73     {
  74         retval = 0x0;
  75     }
  76     else
  77     {
  78         GetPrivScreen(Scr)->pubScrNode->psn_Flags = StatusFlags;
  79         retval = 0x1;
  80     }
  81
  82     UnlockPubScreenList();
  83
  84     FireScreenNotifyMessage((IPTR) Scr, SNOTIFY_PUBSCREENSTATE, IntuitionBase);
  85
  86     return retval;
  87
  88     AROS_LIBFUNC_EXIT
  89 } /* PubScreenStatus */