rom/intuition/pubscreenstatus.c

   1 /*
   2     Copyright © 1995-2013, 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         Change the status flags for a given public screen.
  25
  26     INPUTS
  27         Scr         - The screen the flags of which to change.
  28         StatusFlags - The new values for the flags, see <intuition/screens.h>
  29                       for further information on the flag bits.
  30
  31     RESULT
  32         Clears bit 0 if the screen wasn't public or if it was impossible
  33         to make private (PSNF_PRIVATE) as visitor windows are open on it.
  34         The other bits in the return value are reserved for future use.
  35
  36     NOTES
  37
  38     EXAMPLE
  39
  40     BUGS
  41
  42     SEE ALSO
  43
  44     OpenScreen()
  45
  46     INTERNALS
  47
  48 *****************************************************************************/
  49 {
  50     AROS_LIBFUNC_INIT
  51
  52     ULONG  retval;
  53
  54     SANITY_CHECKR(Scr,FALSE)
  55
  56     LockPubScreenList();
  57
  58     if
  59     (
  60         (GetPrivScreen(Scr)->pubScrNode == NULL)
  61         ||
  62         (
  63             (StatusFlags & PSNF_PRIVATE)
  64             &&
  65             (GetPrivScreen(Scr)->pubScrNode->psn_VisitorCount != 0)
  66         )
  67     )
  68     {
  69         retval = 0x0;
  70     }
  71     else
  72     {
  73         GetPrivScreen(Scr)->pubScrNode->psn_Flags = StatusFlags;
  74         retval = 0x1;
  75     }
  76
  77     UnlockPubScreenList();
  78
  79     FireScreenNotifyMessage((IPTR) Scr, SNOTIFY_PUBSCREENSTATE, IntuitionBase);
  80
  81     return retval;
  82
  83     AROS_LIBFUNC_EXIT
  84 } /* PubScreenStatus */