workbench/libs/datatypes/obtaindtdrawinfoa.c

   1 /*
   2     Copyright © 1995-2001, The AROS Development Team. All rights reserved.
   3     $Id$
   4
   5     Desc:
   6     Lang: English
   7 */
   8
   9 #define USE_BOOPSI_STUBS
  10 #include "datatypes_intern.h"
  11 #include <proto/exec.h>
  12 #include <proto/alib.h>
  13 #include <utility/tagitem.h>
  14 #include <datatypes/datatypesclass.h>
  15 #include <intuition/classusr.h>
  16 #include <clib/boopsistubs.h>
  17
  18 /*****************************************************************************
  19
  20     NAME */
  21
  22         AROS_LH2(APTR, ObtainDTDrawInfoA,
  23
  24 /*  SYNOPSIS */
  25         AROS_LHA(Object         *, o  ,   A0),
  26         AROS_LHA(struct TagItem *, attrs, A1),
  27
  28 /*  LOCATION */
  29         struct Library *, DataTypesBase, 20, DataTypes)
  30
  31 /*  FUNCTION
  32
  33     Prepare a data type object for drawing into a RastPort; this function
  34     will send the DTM_OBTAINDRAWINFO method the object using an opSet
  35     message.
  36
  37     INPUTS
  38
  39     o      --  pointer to the data type object to obtain the drawinfo for;
  40                may be NULL in which case nothing is done
  41     attrs  --  additional attributes
  42
  43     RESULT
  44
  45     A private handle that must be passed to ReleaseDTDrawInfo when the
  46     application is done drawing the object, or NULL if failure.
  47
  48     TAGS
  49
  50         None defined so far.
  51
  52     NOTES
  53
  54     EXAMPLE
  55
  56     BUGS
  57
  58     SEE ALSO
  59
  60     DrawDTObjectA(), ReleaseDTDrawInfo()
  61
  62     INTERNALS
  63
  64     HISTORY
  65
  66     29.8.99  SDuvan  implemented
  67
  68 *****************************************************************************/
  69 {
  70     AROS_LIBFUNC_INIT
  71
  72     struct opSet ops;
  73
  74     if(o == NULL)
  75         return NULL;
  76
  77     ops.MethodID     = DTM_OBTAINDRAWINFO;
  78     ops.ops_AttrList = attrs;
  79     ops.ops_GInfo    = NULL;
  80
  81     return (APTR)DoMethodA(o, (Msg)&ops);
  82
  83     AROS_LIBFUNC_EXIT
  84 } /* ObtainDTDrawInfoA */