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Autodocs Include classes clib datatypes devices diskfont dos exec gadgets graphics hardware images intuition cghooks.h / .i classes.h / .i classusr.h / .i gadgetclass.h / .i icclass.h / .i imageclass.h / .i intuition.h / .i intuitionbase.h / .i iobsolete.h / .i pointerclass.h / .i preferences.h / .i screens.h / .i sghooks.h / .i libraries pragma pragmas prefs proto reaction resources rexx utility workbench GuruMeditation | #ifndef INTUITION_CLASSES_H #define INTUITION_CLASSES_H /* ** $VER: classes.h 40.0 (15.2.1994) ** Includes Release 45.1 ** ** Used only by class implementors ** ** (C) Copyright 1989-2001 Amiga, Inc. ** All Rights Reserved */ /*****************************************************************************/ #ifndef EXEC_TYPES_H #include <exec/types.h> #endif #ifndef EXEC_LIBRARIES_H #include <exec/libraries.h> #endif #ifndef UTILITY_HOOKS_H #include <utility/hooks.h> #endif #ifndef INTUITION_CLASSUSR_H #include <intuition/classusr.h> #endif /*****************************************************************************/ /***************** "White Box" access to struct IClass ***********************/ /*****************************************************************************/ /* This structure is READ-ONLY, and allocated only by Intuition */ typedef struct IClass { struct Hook cl_Dispatcher; /* Class dispatcher */ ULONG cl_Reserved; /* Must be 0 */ struct IClass *cl_Super; /* Pointer to superclass */ ClassID cl_ID; /* Class ID */ UWORD cl_InstOffset; /* Offset of instance data */ UWORD cl_InstSize; /* Size of instance data */ ULONG cl_UserData; /* Class global data */ ULONG cl_SubclassCount; /* Number of subclasses */ ULONG cl_ObjectCount; /* Number of objects */ ULONG cl_Flags; } Class; #define CLF_INLIST 0x00000001L /* class is in public class list */ /*****************************************************************************/ /* add offset for instance data to an object handle */ #define INST_DATA(cl,o) ((void *)(((UBYTE *)o)+cl->cl_InstOffset)) /*****************************************************************************/ /* sizeof the instance data for a given class */ #define SIZEOF_INSTANCE(cl) ((cl)->cl_InstOffset + (cl)->cl_InstSize \ + sizeof (struct _Object)) /*****************************************************************************/ /***************** "White box" access to struct _Object **********************/ /*****************************************************************************/ /* We have this, the instance data of the root class, PRECEDING the "object". * This is so that Gadget objects are Gadget pointers, and so on. If this * structure grows, it will always have o_Class at the end, so the macro * OCLASS(o) will always have the same offset back from the pointer returned * from NewObject(). * * This data structure is subject to change. Do not use the o_Node embedded * structure. */ struct _Object { struct MinNode o_Node; struct IClass *o_Class; }; /*****************************************************************************/ /* convenient typecast */ #define _OBJ(o) ((struct _Object *)(o)) /* get "public" handle on baseclass instance from real beginning of obj data */ #define BASEOBJECT(_obj) ((Object *)(_OBJ(_obj)+1)) /* get back to object data struct from public handle */ #define _OBJECT(o) (_OBJ(o) - 1) /* get class pointer from an object handle */ #define OCLASS(o) ((_OBJECT(o))->o_Class) /*****************************************************************************/ /* BOOPSI class libraries should use this structure as the base for their * library data. This allows developers to obtain the class pointer for * performing object-less inquiries. */ struct ClassLibrary { struct Library cl_Lib; /* Embedded library */ UWORD cl_Pad; /* Align the structure */ Class *cl_Class; /* Class pointer */ }; /*****************************************************************************/ #endif Comments |
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