Import from cleaned 360 CD

.gitattributes

+s/** gitlab-language=armasm linguist-language=armasm linguist-detectable=true
+c/** gitlab-language=c linguist-language=c linguist-detectable=true
+h/** gitlab-language=c linguist-language=c linguist-detectable=true
+cmhg/** gitlab-language=cmhg linguist-language=cmhg linguist-detectable=true
+*,fe1 gitlab-language=make linguist-language=make linguist-detectable=true

LICENSE

+
+                                 Apache License
+                           Version 2.0, January 2004
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+
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+   limitations under the License.

MakeDebug,fe1

+# Project:   DCS_Quit
+
+
+# Toolflags:
+CCflags = -c -depend !Depend -IC: -throwback -zM -fah  -Ddebugging=1  -DDEBUG_MEMORY  -zps1 
+C++flags = -c -depend !Depend -throwback -IC:
+Pascalflags = -c -depend !Depend -throwback -IP:
+Linkflags = -m -c++ -o $@ 
+ObjAsmflags = -depend !Depend -ThrowBack -Stamp -quit -CloseExec
+CMHGflags = 
+LibFileflags = -c -o $@
+Squeezeflags = -o $@
+AAsmflags = -depend !Depend -quit -CloseExec -To $@ -From
+
+
+# Final targets:
+@.DCS_Quit:   @.o.create @.o.delete @.o.events @.o.hide @.o.miscop \
+        @.o.show @.o.task @.o.Modhdr c:o.stubs @.o.main @.^.common.debuglib \
+        @.o.getstate @.o.dcsres @.o.dcsmess @.o.quitres @.o.quitmess
+	link $(linkflags) @.o.create @.o.delete @.o.events @.o.hide \
+        @.o.miscop @.o.show @.o.task @.o.Modhdr c:o.stubs @.o.main \
+        @.^.common.debuglib @.o.getstate @.o.dcsres @.o.dcsmess @.o.quitres @.o.quitmess
+
+
+# User-editable dependencies:
+@.o.dcsmess: @.Messages.DCS 
+	resgen dcsmess_file @.o.dcsmess @.Messages.DCS Resources.DCS.Messages
+
+@.o.dcsres: @.Resources.DCS
+	resgen dcsres_file @.o.dcsres @.Resources.DCS Resources.DCS.Res
+
+@.o.quitmess: @.Messages.quit 
+	resgen quitmess_file @.o.quitmess @.Messages.quit Resources.Quit.Messages
+
+@.o.quitres: @.Resources.quit
+	resgen quitres_file @.o.quitres @.Resources.quit Resources.Quit.Res
+
+# Static dependencies:
+@.o.copy:   @.c.copy
+	cc $(ccflags) -o @.o.copy @.c.copy 
+@.o.create:   @.c.create
+	cc $(ccflags) -o @.o.create @.c.create 
+@.o.delete:   @.c.delete
+	cc $(ccflags) -o @.o.delete @.c.delete 
+@.o.events:   @.c.events
+	cc $(ccflags) -o @.o.events @.c.events 
+@.o.hide:   @.c.hide
+	cc $(ccflags) -o @.o.hide @.c.hide 
+@.o.miscop:   @.c.miscop
+	cc $(ccflags) -o @.o.miscop @.c.miscop 
+@.o.show:   @.c.show
+	cc $(ccflags) -o @.o.show @.c.show 
+@.o.task:   @.c.task
+	cc $(ccflags) -o @.o.task @.c.task 
+@.o.Modhdr:   @.cmhg.Modhdr
+	cmhg @.cmhg.Modhdr -o @.o.Modhdr
+@.o.main:   @.c.main
+	cc $(ccflags) -o @.o.main @.c.main 
+@.o.getstate:   @.c.getstate
+	cc $(ccflags) -o @.o.getstate @.c.getstate 
+
+
+# Dynamic dependencies:

MakeROM,fe1

+# Makefile for DCS
+#
+# ***********************************
+# ***    C h a n g e   L i s t    ***
+# ***********************************
+# Date       Name   Description
+# ----       ----   -----------
+# 06-Jan-94  AMcC   Created
+#
+
+#
+# Component specific options:
+#
+COMPONENT  = DCS
+ROM_MODULE = aof.${COMPONENT}
+
+#
+# Export Paths for Messages module
+#
+RESDIR = <resource$dir>.Resources2
+
+#
+# Generic options:
+#
+MKDIR   = cdir
+CC      = cc
+CMHG    = cmhg
+CP      = copy
+LD      = link
+RM      = remove
+WIPE    = -wipe
+
+CPFLAGS = ~cfr~v
+WFLAGS  = ~c~v
+
+CFLAGS   = -c -depend !Depend ${INCLUDES} -zM -ffah -zps1 ${DFLAGS}
+DFLAGS   = -DROM
+INCLUDES = -Itbox:,C:
+
+#
+# Libraries
+#
+ANSILIB   = CLib:o.ansilib
+CLIB      = CLIB:o.stubs
+RLIB      = RISCOSLIB:o.risc_oslib
+ROMCSTUBS = RISCOSLIB:o.romcstubs
+ABSSYM    = RISC_OSLib:o.abssym
+TBOXLIB   = tbox:tboxlib
+
+OBJS =\
+ o.ModNoDebug\
+ o.create\
+ o.delete\
+ o.events\
+ o.getstate\
+ o.hide\
+ o.main\
+ o.miscop\
+ o.show\
+ o.task
+
+#
+# Rule patterns
+#
+.c.o:;    ${CC} ${CFLAGS} -o $@ $<
+.cmhg.o:; ${CMHG} -O $@ $<
+
+#
+# Main rules:
+#
+#
+rom: ${ROM_MODULE}
+	@echo ${COMPONENT}: Module built (ROM)
+
+install_rom: ${ROM_MODULE}
+	${CP} ${ROM_MODULE} ${INSTDIR}.${COMPONENT} ${CPFLAGS}
+	@echo ${COMPONENT}: Module installed (ROM)
+
+resources: Messages.DCS Resources.DCS Messages.Quit Resources.Quit
+	${MKDIR} ${RESDIR}.DCS
+	${CP} Messages.DCS   ${RESDIR}.DCS.Messages  ${CPFLAGS}
+	${CP} Resources.DCS  ${RESDIR}.DCS.Res       ${CPFLAGS}
+	|
+	${MKDIR} ${RESDIR}.Quit
+	${CP} Messages.Quit  ${RESDIR}.Quit.Messages ${CPFLAGS}
+	${CP} Resources.Quit ${RESDIR}.Quit.Res      ${CPFLAGS}
+	|
+	@echo ${COMPONENT}: resource files copied to Messages module
+
+clean:
+	${WIPE} o.* ${WFLAGS}
+	${WIPE} aof ${WFLAGS}
+	${WIPE} linked ${WFLAGS}
+	${WIPE} map ${WFLAGS}
+	@echo ${COMPONENT}: cleaned
+
+${ROM_MODULE}: ${OBJS} ${TBOXLIB} ${ROMCSTUBS}
+	${MKDIR} aof
+	${LD} -o $@ -aof ${OBJS} ${TBOXLIB} ${ROMCSTUBS}
+
+# final link for ROM Image (using given base address)
+rom_link:
+	${MKDIR} linked
+	${MKDIR} map
+	${LD} -o linked.${COMPONENT} -bin -base ${ADDRESS} ${ROM_MODULE} ${ABSSYM} \
+              -map > map.${COMPONENT}
+	truncate map.${COMPONENT} linked.${COMPONENT}
+	${CP} linked.${COMPONENT} ${LINKDIR}.${COMPONENT} ${CPFLAGS}
+	@echo ${COMPONENT}: rom_link complete
+
+#---------------------------------------------------------------------------
+# Dynamic dependencies:

MakeRel,fe1

+# Project:   DCSQuit
+
+
+# Toolflags:
+CCflags = -c -depend !Depend -IC: -throwback -zM -ffah -zps1 
+C++flags = -c -depend !Depend -throwback -IC:
+Pascalflags = -c -depend !Depend -throwback -IP:
+Linkflags = -m -c++ -o $@ 
+ObjAsmflags = -depend !Depend -ThrowBack -Stamp -quit -CloseExec
+CMHGflags = 
+LibFileflags = -c -o $@
+Squeezeflags = -o $@
+AAsmflags = -depend !Depend -quit -CloseExec -To $@ -From
+
+
+# Final targets:
+@.DCS_Quit:   @.o.copy @.o.create @.o.delete @.o.events @.o.getstate @.o.hide \
+        @.o.main @.o.miscop @.o.show @.o.task c:o.stubs @.^.common.tboxlib @.o.modnodebug \
+        @.o.dcsmess @.o.dcsres @.o.quitmess @.o.quitres 
+	link $(linkflags) @.o.copy @.o.create @.o.delete @.o.events \
+        @.o.getstate @.o.hide @.o.main @.o.miscop @.o.show @.o.task c:o.stubs @.^.common.tboxlib \
+        @.o.modnodebug @.o.dcsmess @.o.dcsres @.o.quitmess @.o.quitres 
+
+
+# User-editable dependencies:
+@.o.dcsmess: @.Messages.DCS 
+	resgen dcsmess_file @.o.dcsmess @.Messages.DCS Resources.DCS.Messages
+
+@.o.dcsres: @.Resources.DCS
+	resgen dcsres_file @.o.dcsres @.Resources.DCS Resources.DCS.Res
+
+@.o.quitmess: @.Messages.quit 
+	resgen quitmess_file @.o.quitmess @.Messages.quit Resources.Quit.Messages
+
+@.o.quitres: @.Resources.quit
+	resgen quitres_file @.o.quitres @.Resources.quit Resources.Quit.Res
+
+# Static dependencies:
+@.o.copy:   @.c.copy
+	cc $(ccflags) -o @.o.copy @.c.copy 
+@.o.create:   @.c.create
+	cc $(ccflags) -o @.o.create @.c.create 
+@.o.delete:   @.c.delete
+	cc $(ccflags) -o @.o.delete @.c.delete 
+@.o.events:   @.c.events
+	cc $(ccflags) -o @.o.events @.c.events 
+@.o.getstate:   @.c.getstate
+	cc $(ccflags) -o @.o.getstate @.c.getstate 
+@.o.hide:   @.c.hide
+	cc $(ccflags) -o @.o.hide @.c.hide 
+@.o.main:   @.c.main
+	cc $(ccflags) -o @.o.main @.c.main 
+@.o.miscop:   @.c.miscop
+	cc $(ccflags) -o @.o.miscop @.c.miscop 
+@.o.show:   @.c.show
+	cc $(ccflags) -o @.o.show @.c.show 
+@.o.task:   @.c.task
+	cc $(ccflags) -o @.o.task @.c.task 
+@.o.modnodebug:   @.cmhg.modnodebug
+	cmhg @.cmhg.modnodebug -o @.o.modnodebug
+
+
+# Dynamic dependencies:

Makefile,fe1

+# Copyright 1996 Acorn Computers Ltd
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+# Makefile for DCS
+#
+# ***********************************
+# ***    C h a n g e   L i s t    ***
+# ***********************************
+# Date       Name   Description
+# ----       ----   -----------
+# 06-Jan-94  AMcC   Created
+#
+
+#
+# Component specific options:
+#
+COMPONENT  = DCS
+ROM_MODULE = aof.${COMPONENT}
+
+#
+# Export Paths for Messages module
+#
+RESDIR = <resource$dir>.Resources2
+
+#
+# Generic options:
+#
+MKDIR   = cdir
+CC      = cc
+CMHG    = cmhg
+CP      = copy
+LD      = link
+RM      = remove
+WIPE    = -wipe
+
+CPFLAGS = ~cfr~v
+WFLAGS  = ~c~v
+
+CFLAGS   = -c -depend !Depend ${INCLUDES} -zM -ffah -zps1 ${DFLAGS}
+DFLAGS   = -DROM
+INCLUDES = -Itbox:,C:
+
+#
+# Libraries
+#
+ANSILIB   = CLib:o.ansilib
+CLIB      = CLIB:o.stubs
+RLIB      = RISCOSLIB:o.risc_oslib
+ROMCSTUBS = RISCOSLIB:o.romcstubs
+ABSSYM    = RISC_OSLib:o.abssym
+TBOXLIB   = tbox:tboxlib
+
+OBJS =\
+ o.ModNoDebug\
+ o.create\
+ o.delete\
+ o.events\
+ o.getstate\
+ o.hide\
+ o.main\
+ o.miscop\
+ o.show\
+ o.task
+
+#
+# Rule patterns
+#
+.c.o:;    ${CC} ${CFLAGS} -o $@ $<
+.cmhg.o:; ${CMHG} -O $@ $<
+
+#
+# Main rules:
+#
+#
+rom: ${ROM_MODULE}
+	@echo ${COMPONENT}: Module built (ROM)
+
+install_rom: ${ROM_MODULE}
+	${CP} ${ROM_MODULE} ${INSTDIR}.${COMPONENT} ${CPFLAGS}
+	@echo ${COMPONENT}: Module installed (ROM)
+
+resources: Messages.DCS Resources.DCS Messages.Quit Resources.Quit
+	${MKDIR} ${RESDIR}.DCS
+	${CP} Messages.DCS   ${RESDIR}.DCS.Messages  ${CPFLAGS}
+	${CP} Resources.DCS  ${RESDIR}.DCS.Res       ${CPFLAGS}
+	|
+	${MKDIR} ${RESDIR}.Quit
+	${CP} Messages.Quit  ${RESDIR}.Quit.Messages ${CPFLAGS}
+	${CP} Resources.Quit ${RESDIR}.Quit.Res      ${CPFLAGS}
+	|
+	@echo ${COMPONENT}: resource files copied to Messages module
+
+clean:
+	${WIPE} o.* ${WFLAGS}
+	${WIPE} aof ${WFLAGS}
+	${WIPE} linked ${WFLAGS}
+	${WIPE} map ${WFLAGS}
+	@echo ${COMPONENT}: cleaned
+
+${ROM_MODULE}: ${OBJS} ${TBOXLIB} ${ROMCSTUBS}
+	${MKDIR} aof
+	${LD} -o $@ -aof ${OBJS} ${TBOXLIB} ${ROMCSTUBS}
+
+# final link for ROM Image (using given base address)
+rom_link:
+	${MKDIR} linked
+	${MKDIR} map
+	${LD} -o linked.${COMPONENT} -bin -base ${ADDRESS} ${ROM_MODULE} ${ABSSYM} \
+              -map > map.${COMPONENT}
+	truncate map.${COMPONENT} linked.${COMPONENT}
+	${CP} linked.${COMPONENT} ${LINKDIR}.${COMPONENT} ${CPFLAGS}
+	@echo ${COMPONENT}: rom_link complete
+
+#---------------------------------------------------------------------------
+# Dynamic dependencies:

Messages/DCS

+# Messages file for the DCS Object Module
+
+E01:Memory allocation failed.
+E02:There are still DCS tasks active.

Messages/Quit

+# Messages file for the Quit Object Module

c/create

+/* Copyright 1996 Acorn Computers Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+/* Title:   create.c
+ * Purpose: create a Generic Object
+ * Author:  IDJ
+ * History: 7-Oct-93: IDJ: created
+ *
+ */
+
+
+#include <stdio.h>
+#include "stdlib.h"
+#include "stddef.h"
+#include "kernel.h"
+#include "swis.h"
+
+#include "const.h"
+#include "macros.h"
+#include "services.h"
+#include "debug.h"
+#include "mem.h"
+#include "messages.h"
+#include "objsupport.h"
+#include "slist.h"
+#include "string32.h"
+
+#include "objects.toolbox.h"
+#include "objects.window.h"
+#include "objects.dcs.h"
+#include "objects.quit.h"
+
+#include "object.h"
+#include "task.h"
+
+#include "create.h"
+
+extern _kernel_oserror *create_object (_kernel_swi_regs *r, TaskDescriptor *t,int class)
+{
+
+    /*
+     * request to create an object
+     * R0 = 0
+     * R1 = Object ID
+     * R2 = 0  (will be internal handle for other SWIs
+     * R3 = wimp task handle of caller (use to identify task descriptor)
+     * R4 -> user regs R0-R9
+     *      R0 = flags
+     *           bit 0 set => create from memory
+     *      R1 -> description block
+     */
+
+    /*
+     * The Toolbox has already checked that this is not just a create
+     * call for a shared Object which already exists.
+     * We create a new Object, and add it to the list of Objects for this
+     * task.
+     * We need to remember the ObjectID passed to us by the Toolbox, so
+     * that we can identify this Object if we are given an ID from the
+     * client's "id block".
+     * Note that if any template names are held in the Object, then we
+     * create an Object from that template, and store its ID.
+     * Note also that the Toolbox has changed the client's R1 to point
+     * at an in-core template, if it wasn't already!
+     */
+
+    _kernel_swi_regs     *user_regs           = USER_REGS(r);
+    ObjectTemplateHeader *obj_template        = (ObjectTemplateHeader *)(user_regs->r[1]);
+    DCSTemplate          *dcs_template        = (DCSTemplate *)(obj_template->body);
+    _kernel_oserror *er=NULL;
+    char *name,*title,*template;
+    char buf[256];
+    Object *new;
+    int len,temp;
+
+    /* all gadgets begin at class base x 0x10 */
+
+    int Message_Gadget = (class<<4) +0;
+
+   new = (Object *) slist_add_new((void *) &(t->object_list),sizeof(Object),"New DCS/Quit object");
+
+   if (!new) goto error2;
+
+   new->window = r->r[0];
+   new->flags =  dcs_template->flags | ((class == DCS_ObjectClass) ? 0 : QClass);
+   new->id = (ObjectID) r->r[1];
+
+   /* create the window, allowing for alternative window, note that DCS and Quit have same templates
+      and this is widely assumed. If this ceases to be, then the code will need separating out. */
+
+   if ((name = dcs_template->window) == NULL) {
+     if (class == DCS_ObjectClass) name = "_DCS";
+     else name = "_Quit";
+   }
+
+   if ((template = copy_template(name)) == NULL) goto error2;
+
+   /* set the title ... */
+
+   len = dcs_template->max_title;
+   if ((title = dcs_template->title) == NULL) {
+
+       /* if we are using the default title, then set max_len to
+        * maximum(template->max_len,actual_length)
+        */
+
+       title = buf;
+       _swix(Toolbox_GetSysInfo, _IN(0) | _IN(1) | _IN(2), 0, title,256);
+       temp = 1+string_length(title);
+       if (temp > len) len = temp;
+   }
+
+   DEBUG debug_output("create","Setting title of DCS/Quit object to %s\n",title);
+
+   if(new->flags & DCS_GenerateDialogueCompleted) zap_window(template,flags,
+        Window_AutoOpen | Window_AutoClose | Window_GenerateHasBeenHidden );
+   else
+     zap_window(template,flags,Window_AutoOpen | Window_AutoClose);
+
+   zap_window(template,window.title.indirect_text.buffer,title);
+
+   zap_window(template,window.title.indirect_text.buff_len,len);
+
+   /* set the message */
+
+   len = dcs_template->max_message;
+
+   if (dcs_template->message) {
+      zap_gadget(template,Button,Message_Gadget,value,dcs_template->message);
+   } else {
+      /* len = maximum (len,template_length) */
+      temp = *(read_gadget(template,Button,Message_Gadget,max_value));
+      if (temp > len) len = temp;
+   }
+
+   zap_gadget(template,Button,Message_Gadget,max_value,len);
+
+   if ((er=create_from_template(template, &new->window)) != NULL)  goto error;
+
+   _swix(Toolbox_SetClientHandle, _IN(0) |_IN(1) |_IN(2), 0,new->window, new);
+
+   r->r[0] = (int) new;
+
+   return NULL;
+
+error2:
+
+   er = make_error(DCS_NoMemory,0);
+
+error:
+
+   if (new) slist_delete_member((void *) &(t->object_list),new);
+
+   return er;
+}

c/delete

+/* Copyright 1996 Acorn Computers Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+/* Title:   delete.c
+ * Purpose: delete a Generic Object
+ * Author:  IDJ
+ * History: 7-Oct-93: IDJ: created
+ *
+ */
+
+
+#include <stdio.h>
+#include <stdlib.h>
+#include "kernel.h"
+#include "swis.h"
+
+#include "const.h"
+#include "macros.h"
+#include "services.h"
+#include "debug.h"
+#include "mem.h"
+#include "messages.h"
+#include "slist.h"
+
+#include "objects.toolbox.h"
+#include "objects.dcs.h"
+
+#include "object.h"
+#include "task.h"
+
+#include "delete.h"
+
+
+extern _kernel_oserror *delete_object (_kernel_swi_regs *r, TaskDescriptor *t,int class)
+{
+
+    /*
+     * request to delete an object
+     * R0 = 1
+     * R1 = Object ID
+     * R2 = internal handle returned when Object was created
+     * R3 = wimp task handle of caller (use to identify task descriptor)
+     * R4 -> user regs R0-R9
+     *      R0 = flags
+     *           bit 0 set => do not recursively delete the object
+     *      R1 = Object ID
+     */
+
+    /*
+     * The Toolbox has already checked that this is not just a delete
+     * call for a shared Object.
+     * We delete Object from the list of Objects for this
+     * task.
+     * If recursive delete is requested then we also call Toolbox_Delete
+     * for any Objects "attached" to this Object.
+     */
+
+    ObjectID win = ((Object *)(r->r[2])) ->window;
+
+    slist_delete_member((void *) &(t->object_list),(void *) (r->r[2]));
+
+    return (_swix(Toolbox_DeleteObject,_IN(0)|_IN(1),0,win));
+}
+
+void _delete_object(Object *obj)
+{
+    _swix(Toolbox_DeleteObject,_IN(0)|_IN(1),0,obj->window);
+
+}

c/events

+/* Copyright 1996 Acorn Computers Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+/* Title:   events.c
+ * Purpose: filters registered with the Toolbox.  Events are delivered here.
+ * Author:  IDJ
+ * History: 7-Oct-93: IDJ: created
+ *
+ */
+
+
+#include <stdio.h>
+#include <stdlib.h>
+#include "kernel.h"
+#include "swis.h"
+
+
+#include "const.h"
+#include "macros.h"
+#include "services.h"
+#include "debug.h"
+#include "mem.h"
+#include "messages.h"
+#include "slist.h"
+
+#include "objects.toolbox.h"
+#include "objects.dcs.h"
+#include "objects.quit.h"
+
+#include "object.h"
+#include "events.h"
+#include "task.h"
+
+static Object *show_obj=NULL;
+static DCSAboutToBeShownEvent show_ev;
+static int r4,r5;
+
+static int dcs_events[] = {DCS_DialogueCompleted,DCS_Discard,DCS_Cancel,DCS_Save};
+static int quit_events[] = {Quit_DialogueCompleted,Quit_Cancel,Quit_Quit};
+
+static _kernel_oserror *events_raise_event(ObjectID obj,ComponentID comp, int * ev_array)
+{
+    _kernel_swi_regs regs;
+    ToolboxEvent event;
+
+    regs.r[0] = 0;
+    regs.r[1] = (int) obj;
+    regs.r[2] = (int) comp;
+    regs.r[3] = (int) &event;
+
+    event.hdr.size = sizeof(ToolboxEventHeader);
+    event.hdr.event_code = ev_array[comp & 0xff];
+    event.hdr.flags = 0;
+
+    return _kernel_swi(Toolbox_RaiseToolboxEvent,&regs,&regs);
+
+}
+
+extern _kernel_oserror *events_postfilter (_kernel_swi_regs *r)
+{
+
+    /*
+     * called from the main Toolbox postfilter, when an event happens which
+     * this module has expressed an interest in.
+     * R0 = Wimp event reason code
+     * R1 ->client's Wimp event block
+     * R2 = Task Descriptor of task interested in the event
+     * R3 ->6-word "ID block" as passed to Toolbox_Initialise
+     *
+     */
+
+    /*
+     * This function gets a pointer to the task interested in the event in
+     * R2 (since this was the value passed to Toolbox_RegisterPostFilter).
+     * If the event is dealt with by this module (eg ID block gets updated).
+     * then set R0 to non-null before return.
+     */
+
+    int event_code              = r->r[0];
+    TaskDescriptor *t = (TaskDescriptor *) r->r[2];
+    IDBlock         *id_block   = (IDBlock *)r->r[3];
+    wimp_PollBlock  *poll_block = (wimp_PollBlock *)r->r[1];
+
+           /* we're only interested in toolbox events on our windows */
+
+    if (event_code != wimp_ETOOLBOX_EVENT)
+       return NULL;
+
+    switch (poll_block->toolbox_event.hdr.event_code) {
+        case ActionButton_Selected:
+           if (!(slist_find_member((void *) &(t->object_list),0,id_block->self_id)))
+              return NULL;
+           /* need to raise appropriate events */
+           {
+           Object *obj;
+
+           /* make sure its hidden */
+
+           _swix(Toolbox_HideObject, _IN(0) |_IN(1), 0, id_block->self_id);
+
+           /* we use the underlying window's client handle for storing the object */
+
+           _swix(Toolbox_GetClientHandle, _IN(0) | _IN(1) | _OUT(0), 0, id_block->self_id, &obj);
+
+           if (obj ->flags & QClass)
+                events_raise_event(obj->id,id_block->self_component,quit_events);
+           else events_raise_event(obj->id,id_block->self_component,dcs_events);
+
+           break;
+           }
+
+        case DCS_AboutToBeShown:
+        case Quit_AboutToBeShown:
+
+           /* have we got an about to be shown event ? No need to check for object validity
+              as these events should only be raised on DCS/Quit objects */
+
+           show_obj = slist_find_member((void *) &(t->object_list),1,id_block->self_id);
+
+           r4 = id_block->parent_id;
+           r5 = id_block->parent_component;
+
+            /* don't need to distinguish between Quit and DCS */
+
+           show_ev  = *((DCSAboutToBeShownEvent *) (&poll_block->toolbox_event));
+           break;
+
+        case Window_HasBeenHidden:
+         {
+                /* need to get window -> dcs/quit object, then raise hidden event */
+           Object *obj;
+
+           if (!(slist_find_member((void *) &(t->object_list),0,id_block->self_id)))
+              return NULL;
+
+           /* we use the underlying window's client handle for storing the object */
+
+           _swix(Toolbox_GetClientHandle, _IN(0) | _IN(1) | _OUT(0), 0, id_block->self_id, &obj);
+
+          if (obj ->flags & QClass)
+              events_raise_event(obj->id,0,quit_events);
+          else events_raise_event(obj->id,0,dcs_events);
+
+          break;
+         }
+        default:
+           break;
+    }
+
+    return NULL;
+}
+
+
+
+extern _kernel_oserror *events_prefilter (_kernel_swi_regs *r)
+{
+
+    /*
+     * called from the main Toolbox prefilter, when Wimp_Poll is called.
+     * R0 = mask passed to Wimp_Poll
+     * R1 ->client's poll block passed to Wimp_Poll
+     * R2 = Task Descriptor.
+     *
+     */
+
+    /*
+     * This function gets a pointer to the current task in
+     * R2 (since this was the value passed to Toolbox_RegisterPreFilter).
+     * This function can enable additional events by zero-ing bits in
+     * r->r[0]
+     */
+
+    /* if the previous call to the postfilter was for an about to be shown event,
+        then we now do the show */
+
+    if (show_obj) {
+       _kernel_swi_regs regs,dummy;
+
+       DEBUG  debug_output("events","In prefilter, about to show object %8x\n",show_obj);
+       regs.r[0] = show_ev.hdr.flags;
+       regs.r[2] = show_ev.r2;
+       regs.r[3] = (int) &(show_ev.r3);
+       regs.r[4] = r4;
+       regs.r[5] = r5;
+       dummy.r[4] = (int) &regs;
+
+       show_do_show(&dummy,show_obj);
+
+       show_obj = NULL;
+    }
+    return NULL;
+}
+

c/getstate

+/* Copyright 1996 Acorn Computers Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+/* Title:   getstate.c
+ * Purpose: return state for a Generic Object
+ * Author:  IDJ
+ * History: 7-Oct-93: IDJ: created
+ *
+ */
+
+
+#include <stdio.h>
+#include <stdlib.h>
+#include "kernel.h"
+#include "swis.h"
+
+#include "const.h"
+#include "macros.h"
+#include "services.h"
+#include "debug.h"
+#include "mem.h"
+#include "messages.h"
+
+#include "objects.toolbox.h"
+#include "objects.generic.h"
+
+#include "object.h"
+#include "task.h"
+
+#include "getstate.h"
+
+extern _kernel_oserror *getstate_object (_kernel_swi_regs *r, TaskDescriptor *t,int class)
+{
+
+    /*
+     * request for info about an object
+     * R0 = 5
+     * R1 = Object ID
+     * R2 = internal handle returned when Object was created
+     * R3 = wimp task handle of caller (use to identify task descriptor)
+     * R4 -> user regs R0-R9
+     *      R0 =  flags
+     *      R1 =  Object ID
+     */
+
+    /*
+     * return state in R0
+     *
+     */
+
+    _kernel_swi_regs *user_regs = USER_REGS(r);
+
+    t=t; class =class;
+
+    return _swix(Toolbox_GetObjectState, _IN(0) | _IN(1) | _OUT(0), user_regs->r[0],
+        ((Object *) (r->r[2])) ->window, &(r->r[0]));
+}
+

c/hide

+/* Copyright 1996 Acorn Computers Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+/* Title:   hide.c
+ * Purpose: hide a Generic Object
+ * Author:  IDJ
+ * History: 7-Oct-93: IDJ: created
+ *
+ */
+
+
+#include <stdio.h>
+#include <stdlib.h>
+#include "kernel.h"
+#include "swis.h"
+
+#include "const.h"
+#include "macros.h"
+#include "services.h"
+#include "debug.h"
+#include "mem.h"
+#include "messages.h"
+
+#include "objects.toolbox.h"
+#include "objects.generic.h"
+
+#include "object.h"
+#include "task.h"
+
+#include "hide.h"
+
+extern _kernel_oserror *hide_object (_kernel_swi_regs *r, TaskDescriptor *t, int class)
+{
+
+    /*
+     * request to hide an object
+     * R0 = 4
+     * R1 = Object ID
+     * R2 = internal handle returned when Object was created
+     * R3 = wimp task handle of caller (use to identify task descriptor)
+     * R4 -> user regs R0-R9
+     *      R0 =  flags
+     *      R1 =  Object ID
+     *
+     */
+
+    /*
+     * Remove the object from view.  For efficiency, we should stop expressing
+     * interest in any events which can't happen whilst the Object is
+     * hidden.
+     *
+     */
+
+    _kernel_swi_regs regs;
+    Object *obj = (Object *) r->r[2];
+
+    regs.r[0] = 0;
+    regs.r[1] = (int) obj->window;        /* id of window */
+
+    return _kernel_swi(Toolbox_HideObject,&regs,&regs);
+
+    task_remove_filters(t);
+}
+

c/main

+/* Copyright 1996 Acorn Computers Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+/* Title:   main.c
+ * Purpose: main module of a DCS Object module
+ * Author:  IDJ
+ * History: 7-Oct-93: IDJ: created
+ *
+ */
+
+
+#include <stdio.h>
+#include <stdlib.h>
+#include "kernel.h"
+#include "swis.h"
+
+#include "const.h"
+#include "macros.h"
+#include "services.h"
+#include "debug.h"
+#include "mem.h"
+#include "messages.h"
+#include "rmensure.h"
+
+#include "objects.toolbox.h"
+#include "objects.DCS.h"
+#include "objects.Quit.h"
+
+#include "object.h"
+#include "create.h"
+#include "delete.h"
+#include "show.h"
+#include "hide.h"
+#include "getstate.h"
+#include "miscop.h"
+#include "events.h"
+
+#include "task.h"
+
+#include "main.h"
+
+#define MAX_CLASS_SWI_METHODS 7
+static _kernel_oserror *(*class_swi_methods [MAX_CLASS_SWI_METHODS])(_kernel_swi_regs *r, TaskDescriptor *t,int class) =
+       {
+            create_object,
+            delete_object,
+            NULL,
+            show_object,
+            hide_object,
+            getstate_object,
+            miscop_object
+       };
+
+
+
+/* +++++++++++++++++++++++++++++++++ finalisation code +++++++++++++++++++++++++++++++++ */
+
+#ifdef ROM
+static _kernel_oserror *__ROM;
+#endif
+
+extern _kernel_oserror *DCS_final (int fatal, int podule, void *pw)
+{
+    _kernel_swi_regs regs;
+    _kernel_oserror *e;
+
+#ifndef ROM
+    extern int       dcsmess_file(void);
+    extern int       dcsres_file(void);
+    extern int       quitmess_file(void);
+    extern int       quitres_file(void);
+#endif
+
+    IGNORE(fatal);
+    IGNORE(podule);
+    IGNORE(pw);
+
+    /*
+     * if tasks are active or modules registered, refuse to die
+     */
+
+    if (task_any_active())
+    {
+        e = make_error (DCS_TasksActive, 0);
+        DEBUG debug_output ("finalise", "W:failed to finalise %s\n", e->errmess);
+        return e;
+    }
+
+    /*
+     * close our messages file
+     */
+
+    messages_file_close();
+
+
+#ifndef ROM
+    /*
+     * ... and deregister from ResourceFS
+     */
+
+    regs.r[0] = dcsmess_file();
+    _kernel_swi (ResourceFS_DeregisterFiles, &regs, &regs);
+
+    regs.r[0] = dcsres_file();
+    _kernel_swi (ResourceFS_DeregisterFiles, &regs, &regs);
+
+    regs.r[0] = quitmess_file();
+    _kernel_swi (ResourceFS_DeregisterFiles, &regs, &regs);
+
+    regs.r[0] = quitres_file();
+    _kernel_swi (ResourceFS_DeregisterFiles, &regs, &regs);
+#endif
+
+
+    /*
+     * ... and deregister from Toolbox
+     */
+
+    regs.r[0] = 0;
+    regs.r[1] = DCS_ObjectClass;
+    _kernel_swi (Toolbox_DeRegisterObjectModule, &regs, &regs);
+
+    regs.r[0] = 0;
+    regs.r[1] = Quit_ObjectClass;
+    _kernel_swi (Toolbox_DeRegisterObjectModule, &regs, &regs);
+
+
+    /*
+     * free up memory we may have left allocated
+     */
+
+    mem_free_all ();
+
+#ifdef ROM
+    if(!__ROM) _swix(0xa2c41, 0);
+#endif
+
+    return NULL;
+}
+
+
+/* ++++++++++++++++++++++++++++++++ initialisation code +++++++++++++++++++++++++++++++ */
+
+_kernel_oserror *register_with_toolbox(void)
+{
+    _kernel_swi_regs regs;
+    char *res_filename;
+    _kernel_oserror *e;
+
+     if (getenv ("DCS$Path") == NULL)
+        res_filename = "Resources:Resources.DCS.Res";
+    else
+        res_filename = "DCS:Res";
+
+    regs.r[0] = 0;
+    regs.r[1] = DCS_ObjectClass;
+    regs.r[2] = DCS_ClassSWI;
+    regs.r[3] = (int) res_filename;
+    if ((e = _kernel_swi (Toolbox_RegisterObjectModule, &regs, &regs)) != NULL)
+        return e;
+
+    /* register here with the Toolbox as an Object Module */
+
+    DEBUG debug_output ("init", "Registering with Toolbox\n");
+
+     if (getenv ("Quit$Path") == NULL)
+        res_filename = "Resources:Resources.Quit.Res";
+    else
+        res_filename = "Quit:Res";
+
+    regs.r[0] = 0;
+    regs.r[1] = Quit_ObjectClass;
+    regs.r[2] = Quit_ClassSWI;
+    regs.r[3] = (int) res_filename;
+    return( _kernel_swi (Toolbox_RegisterObjectModule, &regs, &regs));
+}
+
+extern _kernel_oserror *DCS_init(char *cmd_tail, int podule_base, void *pw)
+{
+    char            *messages_filename;
+    _kernel_oserror *e;
+#ifndef ROM
+    _kernel_swi_regs regs;
+    extern int dcsmess_file(void);
+    extern int dcsres_file(void);
+    extern int quitmess_file(void);
+    extern int quitres_file(void);
+#endif
+
+    IGNORE(cmd_tail);
+    IGNORE(podule_base);
+    IGNORE(pw);
+
+#ifdef ROM
+    __ROM = _swix(0xa2c43, _IN(0), pw);
+#endif
+
+    if ((e=rmensure("Window","Toolbox.Window","1.10")) !=NULL) return e;
+
+    DEBUG debug_set_var_name("DCS$Debug");
+
+#ifndef ROM
+    /*
+     * register our resources with ResourceFS
+     */
+
+    DEBUG debug_output ("init", "Registering messages files\n");
+
+    regs.r[0] = dcsmess_file();
+    if ((e = _kernel_swi (ResourceFS_RegisterFiles, &regs, &regs)) != NULL)
+        return e;
+
+    regs.r[0] = quitmess_file();
+    if ((e = _kernel_swi (ResourceFS_RegisterFiles, &regs, &regs)) != NULL)
+        return e;
+
+
+    DEBUG debug_output ("init", "Registering resource files\n");
+
+    regs.r[0] = dcsres_file();
+    if ((e = _kernel_swi (ResourceFS_RegisterFiles, &regs, &regs)) != NULL)
+        return e;
+
+    regs.r[0] = quitres_file();
+    if ((e = _kernel_swi (ResourceFS_RegisterFiles, &regs, &regs)) != NULL)
+        return e;
+#endif
+
+    /*
+     * register our messages file with MessageTrans
+     */
+
+    if (getenv ("DCS$Path") == NULL)
+        messages_filename = "Resources:Resources.DCS.Messages";
+    else
+        messages_filename = "DCS:Messages";
+
+    if ((e = messages_file_open (messages_filename)) != NULL)
+        return e;
+
+    /* /* Hmm what the **** do we do about two message files ??? */
+
+
+    /* register here with the Toolbox as an Object Module */
+
+    DEBUG debug_output ("init", "Registering with Toolbox\n");
+
+    return (register_with_toolbox());
+
+}
+
+
+
+/* +++++++++++++++++++++++++++++++++ service handler code ++++++++++++++++++++++++++++++ */
+
+
+extern void DCS_services(int service_number, _kernel_swi_regs *r, void *pw)
+{
+    IGNORE(pw);
+
+    switch (service_number)
+    {
+
+        case Service_ToolboxStarting:
+            register_with_toolbox();
+            break;
+
+        case Service_ToolboxTaskDied:
+            /*
+             * task dying - r0 holds task handle
+             */
+
+            task_remove (r->r[0]);
+
+            break;
+
+        case Service_ToolboxTaskBorn:
+            /* Toolbox task has just started R0  == wimp task handle */
+
+            /*
+             * create a new "task descriptor"
+             */
+
+            task_add (r->r[0]);
+
+            break;
+
+        default:
+            break;
+    }
+}
+
+/* ++++++++++++++++++++++++++++++++++++++ SWI code +++++++++++++++++++++++++++++++++++++ */
+
+
+extern _kernel_oserror *DCS_SWI_handler(int swi_no, _kernel_swi_regs *r, void *pw)
+{
+    _kernel_oserror *e = NULL;
+    TaskDescriptor  *t;
+
+    IGNORE(pw);
+
+    switch (swi_no + DCS_SWIChunkBase)
+    {
+        case DCS_ClassSWI:
+        case Quit_ClassSWI:
+            if (r->r[0] < 0 || r->r[0] >= MAX_CLASS_SWI_METHODS)
+            {
+                /* /* make an error here */
+            }
+            else
+            {
+                t = task_find (r->r[3]);
+
+                if (t == NULL)
+                {
+                    /* /* make an error here */
+                }
+
+                e = (*class_swi_methods[r->r[0]])(r, t,swi_no + DCS_SWIChunkBase);
+            }
+            break;
+
+        case DCS_PostFilter:
+            e = events_postfilter (r);
+            break;
+
+        case DCS_PreFilter:
+            e = events_prefilter (r);
+            break;
+
+        default:
+            break;
+    }
+
+    return e;
+}
+
+#if debugging
+
+/* ++++++++++++++++++++++++++++++++++++++ star commands ++++++++++++++++++++++++++++++++++++*/
+
+extern _kernel_oserror *DCS_commands(char *arg_string, int argc, int cmd_no, void *pw)
+{
+    IGNORE(argc);
+    IGNORE(pw);
+    IGNORE(arg_string);
+
+    switch (cmd_no)
+    {
+        case 0:
+            mem_print_list();
+            break;
+
+        default:
+            break;
+    }
+
+    return NULL;
+}
+
+#endif

c/miscop

+/* Copyright 1996 Acorn Computers Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+/* Title:   miscop.c
+ * Purpose: miscellanaous operations on a Generic Object
+ * Author:  IDJ
+ * History: 7-Oct-93: IDJ: created
+ *
+ */
+
+
+#include <stdio.h>
+#include <stdlib.h>
+#include "kernel.h"
+#include "swis.h"
+
+#include "const.h"
+#include "macros.h"
+#include "services.h"
+#include "debug.h"
+#include "mem.h"
+#include "messages.h"
+
+#include "objects.toolbox.h"
+#include "objects.window.h"
+#include "objects.dcs.h"
+
+#include "object.h"
+#include "task.h"
+
+#include "miscop.h"
+
+
+extern _kernel_oserror *miscop_object (_kernel_swi_regs *r, TaskDescriptor *t,int class)
+{
+
+    /*
+     * do a "miscellaneous (ie object-specific) operation on an object
+     * R0 = 6
+     * R1 = Object ID
+     * R2 = internal handle returned when Object was created
+     * R3 = wimp task handle of caller (use to identify task descriptor)
+     * R4 -> user regs R0-R9
+     *      R0 =  flags
+     *      R1 =  Object ID
+     *      R2 =  method code
+     *      R3-R9 method-specific data
+     */
+
+    /*
+     * This is the routine which deals with all object-specific operations.
+     *
+     *
+     */
+
+    /* it just so happens that Quit and DCS have the same methods */
+
+    _kernel_swi_regs *user_regs    = USER_REGS(r);
+    _kernel_swi_regs regs;
+    _kernel_oserror *e= NULL;
+
+    regs = * user_regs;
+    regs.r[1] = ((Object *) r->r[2]) ->window;                /* set object id to window id, as we pass most on */
+
+    switch(regs.r[2]) {
+        case DCS_GetWindowID:
+           user_regs->r[0] = regs.r[1];
+           break;
+
+        case DCS_SetMessage:
+           regs.r[2] = Button_SetValue;
+           regs.r[4] = regs.r[3];
+           regs.r[3] = class<<4;               /* Cid of text */
+           return _kernel_swi(Toolbox_ObjectMiscOp,&regs,&regs);
+           break;
+        case DCS_GetMessage:
+           regs.r[2] = Button_GetValue;
+           regs.r[5] = regs.r[4];
+           regs.r[4] = regs.r[3];
+           regs.r[3] = class<<4;               /* Cid of text */
+           e = _kernel_swi(Toolbox_ObjectMiscOp,&regs,&regs);
+           if (!e) user_regs->r[4] = regs.r[5];         /* update len */
+           break;
+
+        case DCS_SetTitle:
+           regs.r[2] = Window_SetTitle;
+           e = _kernel_swi(Toolbox_ObjectMiscOp,&regs,&regs);
+           break;
+
+        case DCS_GetTitle:
+           regs.r[2] = Window_GetTitle;
+           e = _kernel_swi(Toolbox_ObjectMiscOp,&regs,user_regs);
+                /* note user_regs, so R4 gets updated */
+           break;
+
+        default:
+           break;
+        }
+    return e;
+}
+

c/show

+/* Copyright 1996 Acorn Computers Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+/* Title:   show.c
+ * Purpose: show a Generic Object
+ * Author:  IDJ
+ * History: 7-Oct-93: IDJ: created
+ *
+ */
+
+
+#include <stdio.h>
+#include <stdlib.h>
+#include "strings.h"
+#include "kernel.h"
+#include "swis.h"
+
+#include "const.h"
+#include "macros.h"
+#include "services.h"
+#include "debug.h"
+#include "mem.h"
+#include "messages.h"
+
+#include "objects.toolbox.h"
+#include "objects.dcs.h"
+#include "objects.quit.h"
+
+#include "object.h"
+#include "task.h"
+
+#include "show.h"
+
+
+_kernel_oserror *show_do_show(_kernel_swi_regs *r,Object *obj)
+{
+    _kernel_swi_regs regs;
+
+    memcpy(&regs, (_kernel_swi_regs*) r->r[4], sizeof(regs));
+
+    regs.r[1] = (int) obj->window;        /* id of window */
+
+    return _kernel_swi(Toolbox_ShowObject,&regs,&regs);
+}
+
+extern _kernel_oserror *show_object (_kernel_swi_regs *r, TaskDescriptor *t,int class)
+{
+
+    /*
+     * request to show an object
+     * R0 = 3
+     * R1 = Object ID
+     * R2 = internal handle returned when Object was created
+     * R3 = wimp task handle of caller (use to identify task descriptor)
+     * R4 -> user regs R0-R9
+     *      R0 =  flags
+     *      R1 =  Object ID
+     *      R2 =  "show type"
+     *            0 => default place
+     *            1 => R3 points to buffer with full data for showing
+     *            2 => R3 points to buffer with coordinates
+     *      R3 = 0
+     *   OR R3 -> buffer giving Object-specific data for showing this
+     *            Object
+     *      R4 =  Parent Object ID
+     *      R5 =  Parent Component ID
+     */
+
+    /*
+     * Function to "display" an Object on the screen.  If R2 == 0, then
+     * display in default place.
+     * If Object has bit set to say warn before show, then we should just
+     * send Toolbox Event, and wait for the next call to Wimp_Poll after
+     * the event is delivered before the Object is actually shown
+     * (ie catch it in the prefilter).
+     *
+     */
+
+     _kernel_swi_regs new, *user_regs = USER_REGS(r);
+     int coord[6];
+     Object *obj = (Object *) r->r[2];
+     IGNORE(t);
+
+     if (class == DCS_ObjectClass && (user_regs->r[2] ==0)) {
+     /* show DCS as default, ie. close to pointer */
+        new = *user_regs;
+        r->r[4] = (int) &new;
+        _swix(Wimp_GetPointerInfo, _IN(1),&coord);
+
+        coord[0] -= 60;
+        coord[1] += 60;
+
+        new.r[2] = Toolbox_ShowObject_TopLeft;
+        new.r[3] = (int) &coord;
+
+     }
+
+     if (((class == DCS_ObjectClass ) && (obj->flags & DCS_GenerateAboutToBeShown)) ||
+         ((class == Quit_ObjectClass ) && (obj->flags & Quit_GenerateAboutToBeShown))) {
+
+         _kernel_swi_regs regs;
+         DCSAboutToBeShownEvent event;
+         int size;
+
+         regs.r[0] =0;
+         regs.r[1] = (int) obj->id;
+         regs.r[2] = 0;
+         regs.r[3] = (int) &event;
+
+         event.hdr.size = sizeof(event);
+         event.hdr.event_code = (class == DCS_ObjectClass ) ? DCS_AboutToBeShown : Quit_AboutToBeShown;
+         event.hdr.flags = user_regs->r[0];
+         event.r2 = user_regs->r[2];
+
+         if (event.r2 == Toolbox_ShowObject_Default) size = 0;
+         else if (event.r2 == Toolbox_ShowObject_TopLeft) size = 8;
+         else if (event.r2 == Toolbox_ShowObject_FullSpec) size = sizeof(event.r3);
+
+         memcpy(&event.r3, (void *) (user_regs->r[3]), size);
+
+         return _kernel_swi(Toolbox_RaiseToolboxEvent,&regs,&regs);
+     }
+     else show_do_show(r,obj);
+
+     return NULL;
+}
+

c/task

+/* Copyright 1996 Acorn Computers Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+/* Title:   task.c
+ * Purpose: task handling for the DCS module
+ * Author:  IDJ
+ * History: 7-Oct-93: IDJ: created
+ *
+ */
+
+
+#include <stdio.h>
+#include <stdlib.h>
+#include "kernel.h"
+#include "swis.h"
+
+
+#include "const.h"
+#include "macros.h"
+#include "services.h"
+#include "debug.h"
+#include "mem.h"
+#include "messages.h"
+#include "slist.h"
+
+#include "objects.toolbox.h"
+#include "objects.dcs.h"
+#include "objects.quit.h"
+#include "objects.window.h"
+
+#include "object.h"
+
+#include "task.h"
+
+static EventInterest   toolbox_events_of_interest[] =
+                {{DCS_AboutToBeShown           ,   DCS_ObjectClass},
+                {Quit_AboutToBeShown           ,   Quit_ObjectClass},
+                {ActionButton_Selected         ,   Window_ObjectClass},
+                {Window_HasBeenHidden          ,   Window_ObjectClass},
+                 {                          -1,                   -1}
+                };
+
+void task_add_filters(TaskDescriptor *t)
+{
+    _kernel_swi_regs regs;
+    regs.r[0] = 0;
+    regs.r[1] = DCS_PostFilter;
+    regs.r[2] = (int) t;
+    regs.r[3] = Toolbox_RegisterPostFilter_ToolboxEvent;
+    regs.r[4] = (int)toolbox_events_of_interest;
+    _kernel_swi (Toolbox_RegisterPostFilter, &regs, &regs);
+
+
+    /*
+     * Add a prefilter
+     */
+
+    regs.r[0] = 0;
+    regs.r[1] = DCS_PreFilter;
+    regs.r[2] = (int) t;
+    _kernel_swi (Toolbox_RegisterPreFilter, &regs, &regs);
+
+}
+
+void task_remove_filters(TaskDescriptor *t)
+{
+    _kernel_swi_regs regs;
+
+     regs.r[0] = Toolbox_RegisterPostFilter_Remove;
+     regs.r[1] = DCS_PostFilter;
+     regs.r[2] = (int)t;
+     regs.r[3] = Toolbox_RegisterPostFilter_ToolboxEvent;
+     regs.r[4] = (int)toolbox_events_of_interest;
+
+     _kernel_swi (Toolbox_RegisterPostFilter, &regs, &regs);
+
+     regs.r[0] = Toolbox_RegisterPreFilter_Remove;
+     regs.r[1] = DCS_PreFilter;
+     regs.r[2] = (int)t;
+
+     _kernel_swi (Toolbox_RegisterPreFilter, &regs, &regs);
+}
+
+/*
+ * This module has a linked list of client tasks.
+ * task_add gets called when a Service_ToolboxTaskBorn
+ * service call goes round.
+ * The task is removed when the Service_WimpCloseDown is
+ * received.
+ * Each task keeps an Object list
+ */
+
+
+static TaskDescriptor *task__list = NULL;
+
+int task_any_active(void)
+{
+   return (task__list != NULL);
+}
+
+extern TaskDescriptor *task_find (int task_handle)
+{
+
+    /*
+     * Function to return a TaskDescriptor corresponding to
+     * a task with a given Wimp handle
+     */
+
+    return ((TaskDescriptor *) slist_find_member((void *) &task__list,0,task_handle));
+}
+
+extern void task_remove (int task_handle)
+{
+    /*
+     * Function to remove a task descriptor from the list, given its
+     * Wimp task handle.  Memory is freed, and we also delete any objects
+     * owned by the exiting task.
+     */
+
+    _kernel_swi_regs regs;
+    TaskDescriptor *t = task__list;
+    extern void _delete_object(void *obj);
+
+    t = (TaskDescriptor *) slist_find_member((void *) &task__list,0,task_handle);
+
+    if (t) {
+               /*
+                * /* remove this task's object's list
+                */
+
+       slist_delete_and_call((void *) &(t->object_list),_delete_object);
+
+       /* toolbox will probably do this, but lets be nice! */
+
+       task_remove_filters(t);
+
+       slist_delete_member((void *) &task__list,(void *) t);
+    }
+}
+
+
+extern void task_add (int task_handle)
+{
+    /*
+     * Function to add a task descriptor to the list of active
+     * Toolbox tasks.
+     */
+
+    /*
+     * extra safety check, we make sure that the task is not already there!
+     */
+
+    TaskDescriptor *new_t;
+
+    if (task_find (task_handle) != NULL)
+        return;
+
+
+    /*
+     * add task to list
+     */
+
+    if ((new_t = slist_add_new ((void *) &task__list,sizeof(TaskDescriptor), "task descriptor")) == NULL)
+    {
+        /* can't report an error really (cos we're in a service call) so just return! */
+        return;
+    }
+
+    new_t->task_handle = task_handle;
+    new_t->object_list = NULL;
+
+    task_add_filters(new_t);
+
+}
+

cmhg/ModNoDebug

+; Copyright 1996 Acorn Computers Ltd
+;
+; Licensed under the Apache License, Version 2.0 (the "License");
+; you may not use this file except in compliance with the License.
+; You may obtain a copy of the License at
+;
+;     http://www.apache.org/licenses/LICENSE-2.0
+;
+; Unless required by applicable law or agreed to in writing, software
+; distributed under the License is distributed on an "AS IS" BASIS,
+; WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+; See the License for the specific language governing permissions and
+; limitations under the License.
+;
+; Title:   cmhg.toolbox
+; Purpose: module header for a DCS Object module
+; Author:  NK
+; History: 21-Jun-94: NK : version 1.00
+;
+
+
+initialisation-code:            DCS_init
+
+finalisation-code:              DCS_final
+
+service-call-handler:           DCS_services 0x44ec1,0x44ec2,0x44ec3
+
+title-string:                   DCS
+
+help-string:                    DCS_Object 1.06
+
+swi-chunk-base-number:          0x82a80
+
+swi-handler-code:               DCS_SWI_handler
+
+swi-decoding-table:             DCS, ClassSWI, PostFilter, PreFilter