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GuruMeditation
Docs » Include » intuition » screens.h / .i
#ifndef INTUITION_SCREENS_H
#define INTUITION_SCREENS_H TRUE
/*
**  $VER: screens.h 38.25 (15.2.1993)
**  Includes Release 45.1
**
**  The Screen and NewScreen structures and attributes
**
**  (C) Copyright 1985-2001 Amiga, Inc.
**	    All Rights Reserved
*/

#ifndef EXEC_TYPES_H
#include <exec/types.h>
#endif

#ifndef GRAPHICS_GFX_H
#include <graphics/gfx.h>
#endif

#ifndef GRAPHICS_CLIP_H
#include <graphics/clip.h>
#endif

#ifndef GRAPHICS_VIEW_H
#include <graphics/view.h>
#endif

#ifndef GRAPHICS_RASTPORT_H
#include <graphics/rastport.h>
#endif

#ifndef GRAPHICS_LAYERS_H
#include <graphics/layers.h>
#endif

#ifndef UTILITY_TAGITEM_H
#include <utility/tagitem.h>
#endif

/*
 * NOTE:  intuition/iobsolete.h is included at the END of this file!
 */

/* ======================================================================== */
/* === DrawInfo ========================================================= */
/* ======================================================================== */

/* This is a packet of information for graphics rendering.  It originates
 * with a Screen, and is gotten using GetScreenDrawInfo( screen );
 */

/* You can use the Intuition version number to tell which fields are
 * present in this structure.
 *
 * DRI_VERSION of 1 corresponds to V37 release.
 * DRI_VERSION of 2 corresponds to V39, and includes three new pens
 *	and the dri_CheckMark and dri_AmigaKey fields.
 *
 * Note that sometimes applications need to create their own DrawInfo
 * structures, in which case the DRI_VERSION won't correspond exactly
 * to the OS version!!!
 */
#define DRI_VERSION	(2)

struct DrawInfo
{
    UWORD	dri_Version;	/* will be  DRI_VERSION			*/
    UWORD	dri_NumPens;	/* guaranteed to be >= 9		*/
    UWORD	*dri_Pens;	/* pointer to pen array			*/

    struct TextFont	*dri_Font;	/* screen default font		*/
    UWORD	dri_Depth;	/* (initial) depth of screen bitmap	*/

    struct {	  /* from DisplayInfo database for initial display mode	*/
	UWORD	X;
	UWORD	Y;
    }		dri_Resolution;

    ULONG	dri_Flags;		/* defined below		*/
/* New for V39: dri_CheckMark, dri_AmigaKey. */
    struct Image	*dri_CheckMark;	/* pointer to scaled checkmark image
					 * Will be NULL if DRI_VERSION < 2
					 */
    struct Image	*dri_AmigaKey;	/* pointer to scaled Amiga-key image
					 * Will be NULL if DRI_VERSION < 2
					 */
    ULONG	dri_Reserved[5];	/* avoid recompilation ;^)	*/
};

#define DRIF_NEWLOOK	0x00000001L	/* specified SA_Pens, full treatment */

/* rendering pen number indexes into DrawInfo.dri_Pens[]	*/
#define DETAILPEN	 (0x0000)	/* compatible Intuition rendering pens	*/
#define BLOCKPEN	 (0x0001)	/* compatible Intuition rendering pens	*/
#define TEXTPEN		 (0x0002)	/* text on background			*/
#define SHINEPEN	 (0x0003)	/* bright edge on 3D objects		*/
#define SHADOWPEN	 (0x0004)	/* dark edge on 3D objects		*/
#define FILLPEN		 (0x0005)	/* active-window/selected-gadget fill	*/
#define FILLTEXTPEN	 (0x0006)	/* text over FILLPEN			*/
#define BACKGROUNDPEN	 (0x0007)	/* may not always be color 0		*/
#define HIGHLIGHTTEXTPEN (0x0008)	/* special color text, on background	*/
/* New for V39, only present if DRI_VERSION >= 2: */
#define BARDETAILPEN	 (0x0009)	/* text/detail in screen-bar/menus */
#define BARBLOCKPEN	 (0x000A)	/* screen-bar/menus fill */
#define BARTRIMPEN	 (0x000B)	/* trim under screen-bar */

#define NUMDRIPENS	 (0x000C)


/* New for V39:  It is sometimes useful to specify that a pen value
 * is to be the complement of color zero to three.  The "magic" numbers
 * serve that purpose:
 */
#define PEN_C3		0xFEFC		/* Complement of color 3 */
#define PEN_C2		0xFEFD		/* Complement of color 2 */
#define PEN_C1		0xFEFE		/* Complement of color 1 */
#define PEN_C0		0xFEFF		/* Complement of color 0 */

/* ======================================================================== */
/* === Screen ============================================================= */
/* ======================================================================== */

/* VERY IMPORTANT NOTE ABOUT Screen->BitMap.  In the future, bitmaps
 * will need to grow.  The embedded instance of a bitmap in the screen
 * will no longer be large enough to hold the whole description of
 * the bitmap.
 *
 * YOU ARE STRONGLY URGED to use Screen->RastPort.BitMap in place of
 * &Screen->BitMap whenever and whereever possible.
 */

struct Screen
{
    struct Screen *NextScreen;		/* linked list of screens */
    struct Window *FirstWindow;		/* linked list Screen's Windows */

    WORD LeftEdge, TopEdge;		/* parameters of the screen */
    WORD Width, Height;			/* parameters of the screen */

    WORD MouseY, MouseX;		/* position relative to upper-left */

    UWORD Flags;			/* see definitions below */

    UBYTE *Title;			/* null-terminated Title text */
    UBYTE *DefaultTitle;		/* for Windows without ScreenTitle */

    /* Bar sizes for this Screen and all Window's in this Screen */
    /* Note that BarHeight is one less than the actual menu bar
     * height.	We're going to keep this in V36 for compatibility,
     * although V36 artwork might use that extra pixel
     *
     * Also, the title bar height of a window is calculated from the
     * screen's WBorTop field, plus the font height, plus one.
     */
    BYTE BarHeight, BarVBorder, BarHBorder, MenuVBorder, MenuHBorder;
    BYTE WBorTop, WBorLeft, WBorRight, WBorBottom;

    struct TextAttr *Font;		/* this screen's default font	   */

    /* the display data structures for this Screen */
    struct ViewPort ViewPort;		/* describing the Screen's display */
    struct RastPort RastPort;		/* describing Screen rendering	   */
    struct BitMap BitMap;		/* SEE WARNING ABOVE!		   */
    struct Layer_Info LayerInfo;	/* each screen gets a LayerInfo    */

    /* Only system gadgets may be attached to a screen.
     *	You get the standard system Screen Gadgets automatically
     */
    struct Gadget *FirstGadget;

    UBYTE DetailPen, BlockPen;		/* for bar/border/gadget rendering */

    /* the following variable(s) are maintained by Intuition to support the
     * DisplayBeep() color flashing technique
     */
    UWORD SaveColor0;

    /* This layer is for the Screen and Menu bars */
    struct Layer *BarLayer;

    UBYTE *ExtData;

    UBYTE *UserData;	/* general-purpose pointer to User data extension */

    /**** Data below this point are SYSTEM PRIVATE ****/
};


/* --- FLAGS SET BY INTUITION --------------------------------------------- */
/* The SCREENTYPE bits are reserved for describing various Screen types
 * available under Intuition.
 */
#define SCREENTYPE	0x000F	/* all the screens types available	*/
/* --- the definitions for the Screen Type ------------------------------- */
#define WBENCHSCREEN	0x0001	/* identifies the Workbench screen	*/
#define PUBLICSCREEN	0x0002	/* public shared (custom) screen	*/
#define CUSTOMSCREEN	0x000F	/* original custom screens		*/

#define SHOWTITLE	0x0010	/* this gets set by a call to ShowTitle() */

#define BEEPING		0x0020	/* set when Screen is beeping (private)	*/

#define CUSTOMBITMAP	0x0040	/* if you are supplying your own BitMap */

#define SCREENBEHIND	0x0080	/* if you want your screen to open behind
				 * already open screens
				 */
#define SCREENQUIET	0x0100	/* if you do not want Intuition to render
				 * into your screen (gadgets, title)
				 */
#define SCREENHIRES	0x0200	/* do not use lowres gadgets  (private)	*/

#define NS_EXTENDED	0x1000		/* ExtNewScreen.Extension is valid	*/
/* V36 applications can use OpenScreenTagList() instead of NS_EXTENDED	*/

#define AUTOSCROLL	0x4000	/* screen is to autoscoll		*/

/* New for V39: */
#define PENSHARED	0x0400	/* Screen opener set {SA_SharePens,TRUE} */




#define STDSCREENHEIGHT -1	/* supply in NewScreen.Height		*/
#define STDSCREENWIDTH -1	/* supply in NewScreen.Width		*/

/*
 * Screen attribute tag ID's.  These are used in the ti_Tag field of
 * TagItem arrays passed to OpenScreenTagList() (or in the
 * ExtNewScreen.Extension field).
 */

/* Screen attribute tags.  Please use these versions, not those in
 * iobsolete.h.
 */

#define SA_Dummy	(TAG_USER + 32)
/*
 * these items specify items equivalent to fields in NewScreen
 */
#define SA_Left		(SA_Dummy + 0x0001)
#define SA_Top		(SA_Dummy + 0x0002)
#define SA_Width	(SA_Dummy + 0x0003)
#define SA_Height	(SA_Dummy + 0x0004)
			/* traditional screen positions	and dimensions	*/
#define SA_Depth	(SA_Dummy + 0x0005)
			/* screen bitmap depth				*/
#define SA_DetailPen	(SA_Dummy + 0x0006)
			/* serves as default for windows, too		*/
#define SA_BlockPen	(SA_Dummy + 0x0007)
#define SA_Title	(SA_Dummy + 0x0008)
			/* default screen title				*/
#define SA_Colors	(SA_Dummy + 0x0009)
			/* ti_Data is an array of struct ColorSpec,
			 * terminated by ColorIndex = -1.  Specifies
			 * initial screen palette colors.
			 * Also see SA_Colors32 for use under V39.
			 */
#define SA_ErrorCode	(SA_Dummy + 0x000A)
			/* ti_Data points to LONG error code (values below)*/
#define SA_Font		(SA_Dummy + 0x000B)
			/* equiv. to NewScreen.Font			*/
#define SA_SysFont	(SA_Dummy + 0x000C)
			/* Selects one of the preferences system fonts:
			 *	0 - old DefaultFont, fixed-width
			 *	1 - WB Screen preferred font
			 */
#define SA_Type		(SA_Dummy + 0x000D)
			/* ti_Data is PUBLICSCREEN or CUSTOMSCREEN.  For other
			 * fields of NewScreen.Type, see individual tags,
			 * eg. SA_Behind, SA_Quiet.
			 */
#define SA_BitMap	(SA_Dummy + 0x000E)
			/* ti_Data is pointer to custom BitMap.  This
			 * implies type of CUSTOMBITMAP
			 */
#define SA_PubName	(SA_Dummy + 0x000F)
			/* presence of this tag means that the screen
			 * is to be a public screen.  Please specify
			 * BEFORE the two tags below
			 */
#define SA_PubSig	(SA_Dummy + 0x0010)
#define SA_PubTask	(SA_Dummy + 0x0011)
			/* Task ID and signal for being notified that
			 * the last window has closed on a public screen.
			 */
#define SA_DisplayID	(SA_Dummy + 0x0012)
			/* ti_Data is new extended display ID from
			 * <graphics/displayinfo.h> (V37) or from
			 * <graphics/modeid.h> (V39 and up)
			 */
#define SA_DClip	(SA_Dummy + 0x0013)
			/* ti_Data points to a rectangle which defines
			 * screen display clip region
			 */
#define SA_Overscan	(SA_Dummy + 0x0014)
			/* Set to one of the OSCAN_
			 * specifiers below to get a system standard
			 * overscan region for your display clip,
			 * screen dimensions (unless otherwise specified),
			 * and automatically centered position (partial
			 * support only so far).
			 * If you use this, you shouldn't specify
			 * SA_DClip.  SA_Overscan is for "standard"
			 * overscan dimensions, SA_DClip is for
			 * your custom numeric specifications.
			 */
#define SA_Obsolete1	(SA_Dummy + 0x0015)
			/* obsolete S_MONITORNAME			*/

/** booleans **/
#define SA_ShowTitle	(SA_Dummy + 0x0016)
			/* boolean equivalent to flag SHOWTITLE		*/
#define SA_Behind	(SA_Dummy + 0x0017)
			/* boolean equivalent to flag SCREENBEHIND	*/
#define SA_Quiet	(SA_Dummy + 0x0018)
			/* boolean equivalent to flag SCREENQUIET	*/
#define SA_AutoScroll	(SA_Dummy + 0x0019)
			/* boolean equivalent to flag AUTOSCROLL	*/
#define SA_Pens		(SA_Dummy + 0x001A)
			/* pointer to ~0 terminated UWORD array, as
			 * found in struct DrawInfo
			 */
#define SA_FullPalette	(SA_Dummy + 0x001B)
			/* boolean: initialize color table to entire
			 *  preferences palette (32 for V36), rather
			 * than compatible pens 0-3, 17-19, with
			 * remaining palette as returned by GetColorMap()
			 */

#define SA_ColorMapEntries (SA_Dummy + 0x001C)
			/* New for V39:
			 * Allows you to override the number of entries
			 * in the ColorMap for your screen.  Intuition
			 * normally allocates (1<<depth) or 32, whichever
			 * is more, but you may require even more if you
			 * use certain V39 graphics.library features
			 * (eg. palette-banking).
			 */

#define SA_Parent	(SA_Dummy + 0x001D)
			/* New for V39:
			 * ti_Data is a pointer to a "parent" screen to
			 * attach this one to.	Attached screens slide
			 * and depth-arrange together.
			 */

#define SA_Draggable	(SA_Dummy + 0x001E)
			/* New for V39:
			 * Boolean tag allowing non-draggable screens.
			 * Do not use without good reason!
			 * (Defaults to TRUE).
			 */

#define SA_Exclusive	(SA_Dummy + 0x001F)
			/* New for V39:
			 * Boolean tag allowing screens that won't share
			 * the display.  Use sparingly!  Starting with 3.01,
			 * attached screens may be SA_Exclusive.  Setting
			 * SA_Exclusive for each screen will produce an
			 * exclusive family.   (Defaults to FALSE).
			 */

#define SA_SharePens	(SA_Dummy + 0x0020)
			/* New for V39:
			 * For those pens in the screen's DrawInfo->dri_Pens,
			 * Intuition obtains them in shared mode (see
			 * graphics.library/ObtainPen()).  For compatibility,
			 * Intuition obtains the other pens of a public
			 * screen as PEN_EXCLUSIVE.  Screens that wish to
			 * manage the pens themselves should generally set
			 * this tag to TRUE.  This instructs Intuition to
			 * leave the other pens unallocated.
			 */

#define SA_BackFill	(SA_Dummy + 0x0021)
			/* New for V39:
			 * provides a "backfill hook" for your screen's
			 * Layer_Info.
			 * See layers.library/InstallLayerInfoHook()
			 */

#define SA_Interleaved	(SA_Dummy + 0x0022)
			/* New for V39:
			 * Boolean tag requesting that the bitmap
			 * allocated for you be interleaved.
			 * (Defaults to FALSE).
			 */

#define SA_Colors32	(SA_Dummy + 0x0023)
			/* New for V39:
			 * Tag to set the screen's initial palette colors
			 * at 32 bits-per-gun.	ti_Data is a pointer
			 * to a table to be passed to the
			 * graphics.library/LoadRGB32() function.
			 * This format supports both runs of color
			 * registers and sparse registers.  See the
			 * autodoc for that function for full details.
			 * Any color set here has precedence over
			 * the same register set by SA_Colors.
			 */

#define SA_VideoControl	(SA_Dummy + 0x0024)
			/* New for V39:
			 * ti_Data is a pointer to a taglist that Intuition
			 * will pass to graphics.library/VideoControl(),
			 * upon opening the screen.
			 */

#define SA_FrontChild	(SA_Dummy + 0x0025)
			/* New for V39:
			 * ti_Data is a pointer to an already open screen
			 * that is to be the child of the screen being
			 * opened.  The child screen will be moved to the
			 * front of its family.
			 */

#define SA_BackChild	(SA_Dummy + 0x0026)
			/* New for V39:
			 * ti_Data is a pointer to an already open screen
			 * that is to be the child of the screen being
			 * opened.  The child screen will be moved to the
			 * back of its family.
			 */

#define SA_LikeWorkbench	(SA_Dummy + 0x0027)
			/* New for V39:
			 * Set ti_Data to 1 to request a screen which
			 * is just like the Workbench.	This gives
			 * you the same screen mode, depth, size,
			 * colors, etc., as the Workbench screen.
			 */

#define SA_Reserved		(SA_Dummy + 0x0028)
			/* Reserved for private Intuition use */

#define SA_MinimizeISG		(SA_Dummy + 0x0029)
			/* New for V40:
			 * For compatibility, Intuition always ensures
			 * that the inter-screen gap is at least three
			 * non-interlaced lines.  If your application
			 * would look best with the smallest possible
			 * inter-screen gap, set ti_Data to TRUE.
			 * If you use the new graphics VideoControl()
			 * VC_NoColorPaletteLoad tag for your screen's
			 * ViewPort, you should also set this tag.
			 */

/* this is an obsolete tag included only for compatibility with V35
 * interim release for the A2024 and Viking monitors
 */
#ifndef NSTAG_EXT_VPMODE
#define NSTAG_EXT_VPMODE (TAG_USER | 1)
#endif


/* OpenScreen error codes, which are returned in the (optional) LONG
 * pointed to by ti_Data for the SA_ErrorCode tag item
 */
#define OSERR_NOMONITOR	   (1)	/* named monitor spec not available	*/
#define OSERR_NOCHIPS	   (2)	/* you need newer custom chips		*/
#define OSERR_NOMEM	   (3)	/* couldn't get normal memory		*/
#define OSERR_NOCHIPMEM	   (4)	/* couldn't get chipmem			*/
#define OSERR_PUBNOTUNIQUE (5)	/* public screen name already used	*/
#define OSERR_UNKNOWNMODE  (6)	/* don't recognize mode asked for	*/
#define OSERR_TOODEEP	   (7)	/* Screen deeper than HW supports	*/
#define OSERR_ATTACHFAIL   (8)	/* Failed to attach screens		*/
#define OSERR_NOTAVAILABLE (9)	/* Mode not available for other reason	*/

/* ======================================================================== */
/* === NewScreen ========================================================== */
/* ======================================================================== */
/* note: to use the Extended field, you must use the
 * new ExtNewScreen structure, below
 */
struct NewScreen
{
    WORD LeftEdge, TopEdge, Width, Height, Depth;  /* screen dimensions */

    UBYTE DetailPen, BlockPen;	/* for bar/border/gadget rendering	*/

    UWORD ViewModes;		/* the Modes for the ViewPort (and View) */

    UWORD Type;			/* the Screen type (see defines above)	*/

    struct TextAttr *Font;	/* this Screen's default text attributes */

    UBYTE *DefaultTitle;	/* the default title for this Screen	*/

    struct Gadget *Gadgets;	/* UNUSED:  Leave this NULL		*/

    /* if you are opening a CUSTOMSCREEN and already have a BitMap
     * that you want used for your Screen, you set the flags CUSTOMBITMAP in
     * the Type field and you set this variable to point to your BitMap
     * structure.  The structure will be copied into your Screen structure,
     * after which you may discard your own BitMap if you want
     */
    struct BitMap *CustomBitMap;
};

/*
 * For compatibility reasons, we need a new structure for extending
 * NewScreen.  Use this structure is you need to use the new Extension
 * field.
 *
 * NOTE: V36-specific applications should use the
 * OpenScreenTagList( newscreen, tags ) version of OpenScreen().
 * Applications that want to be V34-compatible as well may safely use the
 * ExtNewScreen structure.  Its tags will be ignored by V34 Intuition.
 *
 */
struct ExtNewScreen
{
    WORD LeftEdge, TopEdge, Width, Height, Depth;
    UBYTE DetailPen, BlockPen;
    UWORD ViewModes;
    UWORD Type;
    struct TextAttr *Font;
    UBYTE *DefaultTitle;
    struct Gadget *Gadgets;
    struct BitMap *CustomBitMap;

    struct TagItem	*Extension;
				/* more specification data, scanned if
				 * NS_EXTENDED is set in NewScreen.Type
				 */
};

/* === Overscan Types ===	*/
#define OSCAN_TEXT	(1)	/* entirely visible	*/
#define OSCAN_STANDARD	(2)	/* just past edges	*/
#define OSCAN_MAX	(3)	/* as much as possible	*/
#define OSCAN_VIDEO	(4)	/* even more than is possible	*/


/* === Public Shared Screen Node ===	*/

/* This is the representative of a public shared screen.
 * This is an internal data structure, but some functions may
 * present a copy of it to the calling application.  In that case,
 * be aware that the screen pointer of the structure can NOT be
 * used safely, since there is no guarantee that the referenced
 * screen will remain open and a valid data structure.
 *
 * Never change one of these.
 */

struct PubScreenNode	{
    struct Node		psn_Node;	/* ln_Name is screen name */
    struct Screen	*psn_Screen;
    UWORD		psn_Flags;	/* below		*/
    WORD		psn_Size;	/* includes name buffer	*/
    WORD		psn_VisitorCount; /* how many visitor windows */
    struct Task		*psn_SigTask;	/* who to signal when visitors gone */
    UBYTE		psn_SigBit;	/* which signal	*/
};

#define PSNF_PRIVATE	(0x0001)

/* NOTE: Due to a bug in NextPubScreen(), make sure your buffer
 * actually has MAXPUBSCREENNAME+1 characters in it!
 */
#define MAXPUBSCREENNAME	(139)	/* names no longer, please	*/

/* pub screen modes	*/
#define SHANGHAI	0x0001	/* put workbench windows on pub screen */
#define POPPUBSCREEN	0x0002	/* pop pub screen to front when visitor opens */

/* New for V39:  Intuition has new screen depth-arrangement and movement
 * functions called ScreenDepth() and ScreenPosition() respectively.
 * These functions permit the old behavior of ScreenToFront(),
 * ScreenToBack(), and MoveScreen().  ScreenDepth() also allows
 * independent depth control of attached screens.  ScreenPosition()
 * optionally allows positioning screens even though they were opened
 * {SA_Draggable,FALSE}.
 */

/* For ScreenDepth(), specify one of SDEPTH_TOFRONT or SDEPTH_TOBACK,
 * and optionally also SDEPTH_INFAMILY.
 *
 * NOTE: ONLY THE OWNER OF THE SCREEN should ever specify
 * SDEPTH_INFAMILY.  Commodities, "input helper" programs,
 * or any other program that did not open a screen should never
 * use that flag.  (Note that this is a style-behavior
 * requirement;  there is no technical requirement that the
 * task calling this function need be the task which opened
 * the screen).
 */

#define	SDEPTH_TOFRONT			(0)	/* Bring screen to front */
#define SDEPTH_TOBACK		(1)	/* Send screen to back */
#define SDEPTH_INFAMILY		(2)	/* Move an attached screen with
					 * respect to other screens of
					 * its family
					 */

/* Here's an obsolete name equivalent to SDEPTH_INFAMILY: */
#define SDEPTH_CHILDONLY	SDEPTH_INFAMILY


/* For ScreenPosition(), specify one of SPOS_RELATIVE, SPOS_ABSOLUTE,
 * or SPOS_MAKEVISIBLE to describe the kind of screen positioning you
 * wish to perform:
 *
 * SPOS_RELATIVE: The x1 and y1 parameters to ScreenPosition() describe
 *	the offset in coordinates you wish to move the screen by.
 * SPOS_ABSOLUTE: The x1 and y1 parameters to ScreenPosition() describe
 *	the absolute coordinates you wish to move the screen to.
 * SPOS_MAKEVISIBLE: (x1,y1)-(x2,y2) describes a rectangle on the
 *	screen which you would like autoscrolled into view.
 *
 * You may additionally set SPOS_FORCEDRAG along with any of the
 * above.  Set this if you wish to reposition an {SA_Draggable,FALSE}
 * screen that you opened.
 *
 * NOTE: ONLY THE OWNER OF THE SCREEN should ever specify
 * SPOS_FORCEDRAG.  Commodities, "input helper" programs,
 * or any other program that did not open a screen should never
 * use that flag.
 */

#define SPOS_RELATIVE		(0)	/* Coordinates are relative */

#define SPOS_ABSOLUTE		(1)	/* Coordinates are expressed as
					 * absolutes, not relatives.
					 */

#define SPOS_MAKEVISIBLE	(2)	/* Coordinates describe a box on
					 * the screen you wish to be
					 * made visible by autoscrolling
					 */

#define SPOS_FORCEDRAG		(4)	/* Move non-draggable screen */

/* New for V39: Intuition supports double-buffering in screens,
 * with friendly interaction with menus and certain gadgets.
 * For each buffer, you need to get one of these structures
 * from the AllocScreenBuffer() call.  Never allocate your
 * own ScreenBuffer structures!
 *
 * The sb_DBufInfo field is for your use.  See the graphics.library
 * AllocDBufInfo() autodoc for details.
 */
struct ScreenBuffer
{
    struct BitMap *sb_BitMap;		/* BitMap of this buffer */
    struct DBufInfo *sb_DBufInfo;	/* DBufInfo for this buffer */
};

/* These are the flags that may be passed to AllocScreenBuffer().
 */
#define SB_SCREEN_BITMAP	1
#define SB_COPY_BITMAP		2

/* Include obsolete identifiers: */
#ifndef INTUITION_IOBSOLETE_H
#include <intuition/iobsolete.h>
#endif

#endif

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