@ GNU AS assembler header file for WritableField
@ Written by DefMod (Dec  9 2012) on Sun Dec  9 15:45:47 2012
@ Jonathan Coxhead, jonathan@doves.demon.co.uk, 5 Sept 1995

@ OSLib---efficient, type-safe, transparent, extensible,
@ register-safe API coverage of RISC OS
@ 
@ Copyright (c) 1994-2012 Jonathan Coxhead and OSLib maintainers
@ 
@ Licence:
@ 
@    OSLib is free software; you can redistribute it and/or modify
@ it under the terms of the GNU General Public License as published by
@ the Free Software Foundation; either version 1, or (at your option)
@ any later version - and this with the following clarification and
@ special exception:
@ 
@    Linking this library statically or dynamically with other modules
@ is making a combined work based on this library. Thus, the terms
@ and conditions of the GNU General Public License cover the whole
@ combination.
@ 
@    As a special exception, the copyright holders of this library
@ give you permission to link this library with independent modules
@ to produce an executable, regardless of the license terms of these
@ independent modules, and to copy and distribute the resulting
@ executable under terms of your choice, provided that you also meet,
@ for each linked independent module, the terms and conditions of the
@ license of that module. An independent module is a module which is
@ not derived from or based on this library. If you modify this
@ library, you may extend this exception to your version of the library,
@ but you are not obliged to do so. If you do not wish to do so, delete
@ this exception statement from your version.
@ 
@    OSLib is distributed in the hope that it will be useful,
@ but WITHOUT ANY WARRANTY; without even the implied warranty of
@ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
@ GNU General Public License for more details.
@ 
@    You should have received a copy of the GNU General Public License
@ along with this programme; if not, write to the Free Software
@ Foundation, Inc, 675 Mass Ave, Cambridge, MA 02139, USA.

#ifndef WritableField_Hdr
#  define WritableField_Hdr

#  ifndef Get_Types
#    define Get_Types
#    include "oslib/Types.Hdr"
#  endif

#  ifndef Get_Toolbox
#    define Get_Toolbox
#    include "oslib/Toolbox.Hdr"
#  endif

#  ifndef Get_Gadget
#    define Get_Gadget
#    include "oslib/Gadget.Hdr"
#  endif

#  ifndef Get_Font
#    define Get_Font
#    include "oslib/Font.Hdr"
#  endif

@Symbols for constants
#  define Class_WritableField 0x200
#  define WritableField_GenerateUserValueChanged 0x1
#  define WritableField_GenerateSetValueChanged 0x2
#  define WritableField_RJustified 0x4
#  define WritableField_HCentred 0x8
#  define WritableField_ConcealText 0x10
#  define Action_WritableFieldValueChanged 0x82885
#  define WritableField_ValueTooLong 0x1

@Symbols for structure offsets and sizes
        .struct 0
WritableField_Gadget_text      : .skip   Toolbox_MsgReference
WritableField_Gadget_text_limit: .skip   Int
WritableField_Gadget_allowable : .skip   Toolbox_MsgReference
WritableField_Gadget_allowable_limit: .skip   Int
WritableField_Gadget_prev      : .skip   Toolbox_C
WritableField_Gadget_next      : .skip   Toolbox_C
WritableField_Gadget           : 

        .struct 0
        Gadget_Object_MEMBERS WritableField_Object
WritableField_Object_text      : .skip   Toolbox_MsgReference
WritableField_Object_text_limit: .skip   Int
WritableField_Object_allowable : .skip   Toolbox_MsgReference
WritableField_Object_allowable_limit: .skip   Int
WritableField_Object_prev      : .skip   Toolbox_C
WritableField_Object_next      : .skip   Toolbox_C
WritableField_Object           : 

        .struct 0
WritableField_ActionValueChanged_string: .skip   212*Char
WritableField_ActionValueChanged: 

        .struct 0
        Toolbox_ActionHeader_MEMBERS WritableField_ActionValueChangedBlock
WritableField_ActionValueChangedBlock_string: .skip   212*Char
WritableField_ActionValueChangedBlock: 


@Symbols for SWI's and SWI reason codes
#  define WritableField_SetValue 0x200
   @Entry
   @  R0 = flags (Bits)
   @  R1 = window (Toolbox_O)
   @  R2 = &200
   @  R3 = writable_field (Toolbox_C)
   @  R4 -> value (String)

#  define WritableField_GetValue 0x201
   @Entry
   @  R0 = flags (Bits)
   @  R1 = window (Toolbox_O)
   @  R2 = &201
   @  R3 = writable_field (Toolbox_C)
   @  R4 = buffer (pointer to String)
   @  R5 = size (Int)
   @Exit
   @  R5 = used (Int)

#  define WritableField_SetAllowable 0x202
   @Entry
   @  R0 = flags (Bits)
   @  R1 = window (Toolbox_O)
   @  R2 = &202
   @  R3 = writable_field (Toolbox_C)
   @  R4 -> allowed (String)

#  define WritableField_SetFont 0x204
   @Entry
   @  R0 = flags (Bits)
   @  R1 = window (Toolbox_O)
   @  R2 = &204
   @  R3 = writable_field (Toolbox_C)
   @  R4 -> font_name (String)
   @  R5 = xsize (Int)
   @  R6 = ysize (Int)

#endif
