Path: utzoo!attcan!uunet!super!udel!princeton!njin!rutgers!mailrus!utah-gr!uplherc!sp7040!obie!wsccs!val
From: val@wsccs.UUCP (Val Kartchner)
Newsgroups: comp.sys.amiga
Subject: Gadgets
Keywords: gadgets,amiga,help
Message-ID: <647@wsccs.UUCP>
Date: 14 Sep 88 18:28:54 GMT
Lines: 112


     I'm having a problem with some gadgets on the Amiga.  Here are the
     structure declarations:

-----------------------------------------------------------------------------
/* Window and screen stuff */
#define SCREEN_WIDTH	640
#ifndef STDSCREENHEIGHT
#define STDSCREENHEIGHT 400
#endif

/* Colors */
#define BACKGROUND	0
#define NORMAL		1
#define	HIGHLIGHT	2
#define	GHOSTED		3
#define	BORDER		NORMAL
#define	TEXT		NORMAL

/* Text stuff */
#define TEXT_LEFT	5
#define	TEXT_HEIGHT	8
#define	TEXT_WIDTH	8

unsigned short larrow_bitmap[] =
 {
  0x0000,
  0x1000,
  0x3000,
  0x7e00,
  0xfe00,
  0x7e00,
  0x3000,
  0x1000
 };
unsigned short rarrow_bitmap[] =
 {
  0x0000,
  0x0800,
  0x0c00,
  0x7e00,
  0x7f00,
  0x7e00,
  0x0c00,
  0x0800
 };
struct Image larrow_image = { 0,0, 8,8,1, larrow_bitmap,0x2,0x0,NULL };
struct Image larrow_comp  = { 0,0, 8,8,1, larrow_bitmap,0x1,0x0,NULL };
struct Image rarrow_image = { 0,0, 8,8,1, rarrow_bitmap,0x2,0x0,NULL };
struct Image rarrow_comp  = { 0,0, 8,8,1, rarrow_bitmap,0x1,0x0,NULL };

struct PropInfo volpropinfo =
 {
  AUTOKNOB | FREEHORIZ, 1,1, 0xffff/10,0xffff/10,
  0,0,0,0,0,0		/* Intuition inits these */
 };

char GadgBName[11],GadgBVolume_I[4]="1";

struct Gadget GadgVolume_RA =
 {
  NULL,
  TEXT_LEFT+48*TEXT_WIDTH,15-TEXT_HEIGHT+1,TEXT_WIDTH*1,TEXT_HEIGHT,
  GADGIMAGE | GADGHIMAGE,GADGIMMEDIATE,BOOLGADGET,
  (APTR)&rarrow_image,(APTR)&rarrow_comp,NULL,NULL,
  NULL,
  NULL,NULL		/* User Info */
 };
struct Gadget GadgVolume_P =
 {
  &GadgVolume_RA,
  TEXT_LEFT+35*TEXT_WIDTH,15-TEXT_HEIGHT+1,100,TEXT_HEIGHT,
  GADGHNONE,RELVERIFY,PROPGADGET,
  NULL,NULL,NULL,NULL,
  (APTR)&volpropinfo,
  NULL,NULL
 };
struct Gadget GadgVolume_LA =
 {
  &GadgVolume_P,
  TEXT_LEFT+34*TEXT_WIDTH,15-TEXT_HEIGHT+1,TEXT_WIDTH*1,TEXT_HEIGHT,
  GADGIMAGE | GADGHIMAGE,GADGIMMEDIATE,BOOLGADGET,
  (APTR)&larrow_image,(APTR)&larrow_comp,NULL,NULL,
  NULL,
  NULL,NULL		/* User Info */
 };
-----------------------------------------------------------------------------

     I have other gadget declarations also.  When I compile this with
     Lattice (and link it), it crashes immediately.  If I remove
     GadgVolume_P from the list, all of the gadgets work correctly except
     GadgVolume_LA and GadgVolume_RA which don't complement.  I've tried
     GADGHCOMP and alternate images, and they still don't change, but I do
     recieve GADGETDOWN events.  When I do an AddGadget(w,&GadgVolume_P,-1)
     [Where w is a (Window *)], the machine immediately crashes with Address
     Error, Illegal Instruction, 1010 opcode, or 1111 opcode.

     When I compile it with the latest version of Manx Aztec C (and link
     it), *NONE* of the gadgets even show up.  (Fastmem was turned off.)
     Once it recieves a left mouse button event, even the menus stop
     working.

     I'm using midi.library, and all of the libraries have been opened
     successfully.   Would someone please help me with this?

			Thanks in advance,
				-=:[ VAL ]:=-
-- 
----  /\  ----------------------------------------------------------------
     /\/\  .    /\     |  Val Kartchner  {UT@WSC}  |  'vi' must go, this
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