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/*
 * tkInt.h --
 *
 *	Declarations for things used internally by the Tk
 *	procedures but not exported outside the module.
 *
 * Copyright (c) 1990-1994 The Regents of the University of California.
 * Copyright (c) 1994-1997 Sun Microsystems, Inc.
 * Copyright (c) 1998 by Scriptics Corporation.
 *
 * See the file "license.terms" for information on usage and redistribution
 * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
 *
 * RCS: $Id: tkInt.h,v 1.56.2.5 2005/07/28 03:45:03 hobbs Exp $ 
 */

#ifndef _TKINT
#define _TKINT

#ifndef _TK
#include "tk.h"
#endif
#ifndef _TCL
#include "tcl.h"
#endif
#ifndef _TKPORT
#include <tkPort.h>
#endif

/*
 * Opaque type declarations:
 */

typedef struct TkColormap TkColormap;
typedef struct TkGrabEvent TkGrabEvent;
typedef struct TkpCursor_ *TkpCursor;
typedef struct TkRegion_ *TkRegion;
typedef struct TkStressedCmap TkStressedCmap;
typedef struct TkBindInfo_ *TkBindInfo;

/*
 * Procedure types.
 */

typedef int (TkBindEvalProc) _ANSI_ARGS_((ClientData clientData,
	Tcl_Interp *interp, XEvent *eventPtr, Tk_Window tkwin,
	KeySym keySym));
typedef void (TkBindFreeProc) _ANSI_ARGS_((ClientData clientData));

/*
 * One of the following structures is maintained for each cursor in
 * use in the system.  This structure is used by tkCursor.c and the
 * various system specific cursor files.
 */

typedef struct TkCursor {
    Tk_Cursor cursor;		/* System specific identifier for cursor. */
    Display *display;		/* Display containing cursor. Needed for
				 * disposal and retrieval of cursors. */
    int resourceRefCount;	/* Number of active uses of this cursor (each
				 * active use corresponds to a call to
				 * Tk_AllocPreserveFromObj or Tk_Preserve).
				 * If this count is 0, then this structure
				 * is no longer valid and it isn't present
				 * in a hash table: it is being kept around
				 * only because there are objects referring
				 * to it.  The structure is freed when
				 * resourceRefCount and objRefCount are
				 * both 0. */
    int objRefCount;		/* Number of Tcl objects that reference
				 * this structure.. */
    Tcl_HashTable *otherTable;	/* Second table (other than idTable) used
				 * to index this entry. */
    Tcl_HashEntry *hashPtr;	/* Entry in otherTable for this structure
				 * (needed when deleting). */
    Tcl_HashEntry *idHashPtr;	/* Entry in idTable for this structure
				 * (needed when deleting). */
    struct TkCursor *nextPtr;	/* Points to the next TkCursor structure with
				 * the same name.  Cursors with the same
				 * name but different displays are chained
				 * together off a single hash table entry. */
} TkCursor;

/*
 * This defines whether we should try to use XIM over-the-spot style
 * input.  Allow users to override it.  It is a much more elegant use
 * of XIM, but uses a bit more memory.
 */

#ifndef TK_XIM_SPOT
#   define TK_XIM_SPOT	1
#endif

/*
 * The following structure is kept one-per-TkDisplay to maintain information
 * about the caret (cursor location) on this display.  This is used to
 * dictate global focus location (Windows Accessibility guidelines) and to
 * position the IME or XIM over-the-spot window.
 */

typedef struct TkCaret {
    struct TkWindow *winPtr;	/* the window on which we requested caret
				 * placement */
    int x;			/* relative x coord of the caret */
    int y;			/* relative y coord of the caret */
    int height;			/* specified height of the window */
} TkCaret;

/*
 * One of the following structures is maintained for each display
 * containing a window managed by Tk.  In part, the structure is 
 * used to store thread-specific data, since each thread will have 
 * its own TkDisplay structure.
 */

typedef struct TkDisplay {
    Display *display;		/* Xlib's info about display. */
    struct TkDisplay *nextPtr;	/* Next in list of all displays. */
    char *name;			/* Name of display (with any screen
				 * identifier removed).  Malloc-ed. */
    Time lastEventTime;		/* Time of last event received for this
				 * display. */

    /*
     * Information used primarily by tk3d.c:
     */

    int borderInit;             /* 0 means borderTable needs initializing. */
    Tcl_HashTable borderTable;  /* Maps from color name to TkBorder 
				 * structure. */

    /*
     * Information used by tkAtom.c only:
     */

    int atomInit;		/* 0 means stuff below hasn't been
				 * initialized yet. */
    Tcl_HashTable nameTable;	/* Maps from names to Atom's. */
    Tcl_HashTable atomTable;	/* Maps from Atom's back to names. */

    /*
     * Information used primarily by tkBind.c:
     */

    int bindInfoStale;		/* Non-zero means the variables in this
				 * part of the structure are potentially
				 * incorrect and should be recomputed. */
    unsigned int modeModMask;	/* Has one bit set to indicate the modifier
				 * corresponding to "mode shift".  If no
				 * such modifier, than this is zero. */
    unsigned int metaModMask;	/* Has one bit set to indicate the modifier
				 * corresponding to the "Meta" key.  If no
				 * such modifier, then this is zero. */
    unsigned int altModMask;	/* Has one bit set to indicate the modifier
				 * corresponding to the "Meta" key.  If no
				 * such modifier, then this is zero. */
    enum {LU_IGNORE, LU_CAPS, LU_SHIFT} lockUsage;
				/* Indicates how to interpret lock modifier. */
    int numModKeyCodes;		/* Number of entries in modKeyCodes array
				 * below. */
    KeyCode *modKeyCodes;	/* Pointer to an array giving keycodes for
				 * all of the keys that have modifiers
				 * associated with them.  Malloc'ed, but
				 * may be NULL. */

    /*
     * Information used by tkBitmap.c only:
     */
  
    int bitmapInit;             /* 0 means tables above need initializing. */
    int bitmapAutoNumber;       /* Used to number bitmaps. */
    Tcl_HashTable bitmapNameTable;    
                                /* Maps from name of bitmap to the first 
				 * TkBitmap record for that name. */
    Tcl_HashTable bitmapIdTable;/* Maps from bitmap id to the TkBitmap
				 * structure for the bitmap. */
    Tcl_HashTable bitmapDataTable;    
                                /* Used by Tk_GetBitmapFromData to map from
				 * a collection of in-core data about a 
				 * bitmap to a reference giving an auto-
				 * matically-generated name for the bitmap. */

    /*
     * Information used by tkCanvas.c only:
     */

    int numIdSearches;          
    int numSlowSearches;

    /*
     * Used by tkColor.c only:
     */

    int colorInit;              /* 0 means color module needs initializing. */
    TkStressedCmap *stressPtr;	/* First in list of colormaps that have
				 * filled up, so we have to pick an
				 * approximate color. */
    Tcl_HashTable colorNameTable;
                                /* Maps from color name to TkColor structure
				 * for that color. */
    Tcl_HashTable colorValueTable;
                                /* Maps from integer RGB values to TkColor
				 * structures. */

    /*
     * Used by tkCursor.c only:
     */

    int cursorInit;             /* 0 means cursor module need initializing. */
    Tcl_HashTable cursorNameTable;
                                /* Maps from a string name to a cursor to the
				 * TkCursor record for the cursor. */
    Tcl_HashTable cursorDataTable;
                                /* Maps from a collection of in-core data
				 * about a cursor to a TkCursor structure. */
    Tcl_HashTable cursorIdTable;
                                /* Maps from a cursor id to the TkCursor
				 * structure for the cursor. */
    char cursorString[20];      /* Used to store a cursor id string. */
    Font cursorFont;		/* Font to use for standard cursors.
				 * None means font not loaded yet. */

    /*
     * Information used by tkError.c only:
     */

    struct TkErrorHandler *errorPtr;
				/* First in list of error handlers
				 * for this display.  NULL means
				 * no handlers exist at present. */
    int deleteCount;		/* Counts # of handlers deleted since
				 * last time inactive handlers were
				 * garbage-collected.  When this number
				 * gets big, handlers get cleaned up. */

    /*
     * Used by tkEvent.c only:
     */

    struct TkWindowEvent *delayedMotionPtr;
				/* Points to a malloc-ed motion event
				 * whose processing has been delayed in
				 * the hopes that another motion event
				 * will come along right away and we can
				 * merge the two of them together.  NULL
				 * means that there is no delayed motion
				 * event. */

    /*
     * Information used by tkFocus.c only:
     */

    int focusDebug;             /* 1 means collect focus debugging 
				 * statistics. */
    struct TkWindow *implicitWinPtr;
				/* If the focus arrived at a toplevel window
				 * implicitly via an Enter event (rather
				 * than via a FocusIn event), this points
				 * to the toplevel window.  Otherwise it is
				 * NULL. */
    struct TkWindow *focusPtr;	/* Points to the window on this display that
				 * should be receiving keyboard events.  When
				 * multiple applications on the display have
				 * the focus, this will refer to the
				 * innermost window in the innermost
				 * application.  This information isn't used
				 * under Unix or Windows, but it's needed on
				 * the Macintosh. */

    /*
     * Information used by tkGC.c only:
     */
    
    Tcl_HashTable gcValueTable; /* Maps from a GC's values to a TkGC structure
				 * describing a GC with those values. */
    Tcl_HashTable gcIdTable;    /* Maps from a GC to a TkGC. */ 
    int gcInit;                 /* 0 means the tables below need 
				 * initializing. */

    /*
     * Information used by tkGeometry.c only:
     */

    Tcl_HashTable maintainHashTable;
                                /* Hash table that maps from a master's 
				 * Tk_Window token to a list of slaves
				 * managed by that master. */
    int geomInit;    

    /*
     * Information used by tkGet.c only:
     */
  
    Tcl_HashTable uidTable;     /* Stores all Tk_Uid  used in a thread. */
    int uidInit;                /* 0 means uidTable needs initializing. */

    /*
     * Information used by tkGrab.c only:
     */

    struct TkWindow *grabWinPtr;
				/* Window in which the pointer is currently
				 * grabbed, or NULL if none. */
    struct TkWindow *eventualGrabWinPtr;
				/* Value that grabWinPtr will have once the
				 * grab event queue (below) has been
				 * completely emptied. */
    struct TkWindow *buttonWinPtr;
				/* Window in which first mouse button was
				 * pressed while grab was in effect, or NULL
				 * if no such press in effect. */
    struct TkWindow *serverWinPtr;
				/* If no application contains the pointer then
				 * this is NULL.  Otherwise it contains the
				 * last window for which we've gotten an
				 * Enter or Leave event from the server (i.e.
				 * the last window known to have contained
				 * the pointer).  Doesn't reflect events
				 * that were synthesized in tkGrab.c. */
    TkGrabEvent *firstGrabEventPtr;
				/* First in list of enter/leave events
				 * synthesized by grab code.  These events
				 * must be processed in order before any other
				 * events are processed.  NULL means no such
				 * events. */
    TkGrabEvent *lastGrabEventPtr;
				/* Last in list of synthesized events, or NULL
				 * if list is empty. */
    int grabFlags;		/* Miscellaneous flag values.  See definitions
				 * in tkGrab.c. */

    /*
     * Information used by tkGrid.c only:
     */

    int gridInit;               /* 0 means table below needs initializing. */
    Tcl_HashTable gridHashTable;/* Maps from Tk_Window tokens to 
				 * corresponding Grid structures. */

    /*
     * Information used by tkImage.c only:
     */

    int imageId;                /* Value used to number image ids. */

    /*
     * Information used by tkMacWinMenu.c only:
     */

    int postCommandGeneration;  

    /*
     * Information used by tkOption.c only.
     */



    /*
     * Information used by tkPack.c only.
     */

    int packInit;              /* 0 means table below needs initializing. */
    Tcl_HashTable packerHashTable;
                               /* Maps from Tk_Window tokens to 
				* corresponding Packer structures. */
    

    /*
     * Information used by tkPlace.c only.
     */

    int placeInit;              /* 0 means tables below need initializing. */
    Tcl_HashTable masterTable;  /* Maps from Tk_Window toke to the Master
				 * structure for the window, if it exists. */
    Tcl_HashTable slaveTable;   /* Maps from Tk_Window toke to the Slave
				 * structure for the window, if it exists. */

    /*
     * Information used by tkSelect.c and tkClipboard.c only:
     */

    struct TkSelectionInfo *selectionInfoPtr;
				/* First in list of selection information
				 * records.  Each entry contains information
				 * about the current owner of a particular
				 * selection on this display. */
    Atom multipleAtom;		/* Atom for MULTIPLE.  None means
				 * selection stuff isn't initialized. */
    Atom incrAtom;		/* Atom for INCR. */
    Atom targetsAtom;		/* Atom for TARGETS. */
    Atom timestampAtom;		/* Atom for TIMESTAMP. */
    Atom textAtom;		/* Atom for TEXT. */
    Atom compoundTextAtom;	/* Atom for COMPOUND_TEXT. */
    Atom applicationAtom;	/* Atom for TK_APPLICATION. */
    Atom windowAtom;		/* Atom for TK_WINDOW. */
    Atom clipboardAtom;		/* Atom for CLIPBOARD. */
    Atom utf8Atom;		/* Atom for UTF8_STRING. */

    Tk_Window clipWindow;	/* Window used for clipboard ownership and to
				 * retrieve selections between processes. NULL
				 * means clipboard info hasn't been
				 * initialized. */
    int clipboardActive;	/* 1 means we currently own the clipboard
				 * selection, 0 means we don't. */
    struct TkMainInfo *clipboardAppPtr;
				/* Last application that owned clipboard. */
    struct TkClipboardTarget *clipTargetPtr;
				/* First in list of clipboard type information
				 * records.  Each entry contains information
				 * about the buffers for a given selection
				 * target. */

    /*
     * Information used by tkSend.c only:
     */

    Tk_Window commTkwin;	/* Window used for communication
				 * between interpreters during "send"
				 * commands.  NULL means send info hasn't
				 * been initialized yet. */
    Atom commProperty;		/* X's name for comm property. */
    Atom registryProperty;	/* X's name for property containing
				 * registry of interpreter names. */
    Atom appNameProperty;	/* X's name for property used to hold the
				 * application name on each comm window. */

    /*
     * Information used by tkXId.c only:
     */

    struct TkIdStack *idStackPtr;
				/* First in list of chunks of free resource
				 * identifiers, or NULL if there are no free
				 * resources. */
    XID (*defaultAllocProc) _ANSI_ARGS_((Display *display));
				/* Default resource allocator for display. */
    struct TkIdStack *windowStackPtr;
				/* First in list of chunks of window
				 * identifers that can't be reused right
				 * now. */
    Tcl_TimerToken idCleanupScheduled;
				/* If set, it means a call to WindowIdCleanup
				 * has already been scheduled, 0 means it
				 * hasn't. */

    /*
     * Information used by tkUnixWm.c and tkWinWm.c only:
     */

    struct TkWmInfo *firstWmPtr;  /* Points to first top-level window. */
    struct TkWmInfo *foregroundWmPtr;    
                                /* Points to the foreground window. */

    /*
     * Information maintained by tkWindow.c for use later on by tkXId.c:
     */


    int destroyCount;		/* Number of Tk_DestroyWindow operations
				 * in progress. */
    unsigned long lastDestroyRequest;
				/* Id of most recent XDestroyWindow request;
				 * can re-use ids in windowStackPtr when
				 * server has seen this request and event
				 * queue is empty. */

    /*
     * Information used by tkVisual.c only:
     */

    TkColormap *cmapPtr;	/* First in list of all non-default colormaps
				 * allocated for this display. */

    /*
     * Miscellaneous information:
     */

#ifdef TK_USE_INPUT_METHODS
    XIM inputMethod;		/* Input method for this display */
#if TK_XIM_SPOT
    XFontSet inputXfs;		/* XFontSet cached for over-the-spot XIM. */
#endif
#endif /* TK_USE_INPUT_METHODS */
    Tcl_HashTable winTable;	/* Maps from X window ids to TkWindow ptrs. */

    int refCount;		/* Reference count of how many Tk applications
                                 * are using this display. Used to clean up
                                 * the display when we no longer have any
                                 * Tk applications using it.
                                 */
    /*
     * The following field were all added for Tk8.3
     */
    int mouseButtonState;	/* current mouse button state for this
				 * display */
    Window mouseButtonWindow;	/* Window the button state was set in,
				 * added in Tk 8.4. */
    Window warpWindow;
    int warpX;
    int warpY;

    /*
     * The following field(s) were all added for Tk8.4
     */
    unsigned int flags;		/* Various flag values:  these are all
				 * defined in below. */
    TkCaret caret;		/* information about the caret for this
				 * display.  This is not a pointer. */

    int iconDataSize;		/* size of default iconphoto image data */
    unsigned char *iconDataPtr;	/* default iconphoto image data, if set */
} TkDisplay;

/*
 * Flag values for TkDisplay flags.
 *  TK_DISPLAY_COLLAPSE_MOTION_EVENTS:	(default on)
 *	Indicates that we should collapse motion events on this display
 *  TK_DISPLAY_USE_IM:			(default on, set via tk.tcl)
 *	Whether to use input methods for this display
 *  TK_DISPLAY_XIM_SPOT:		(default off)
 *	Indicates that we should use over-the-spot XIM on this display
 *  TK_DISPLAY_WM_TRACING:		(default off)
 *	Whether we should do wm tracing on this display.
 *  TK_DISPLAY_IN_WARP:			(default off)
 *	Indicates that we are in a pointer warp
 */

#define TK_DISPLAY_COLLAPSE_MOTION_EVENTS	(1 << 0)
#define TK_DISPLAY_USE_IM			(1 << 1)
#define TK_DISPLAY_XIM_SPOT			(1 << 2)
#define TK_DISPLAY_WM_TRACING			(1 << 3)
#define TK_DISPLAY_IN_WARP			(1 << 4)

/*
 * One of the following structures exists for each error handler
 * created by a call to Tk_CreateErrorHandler.  The structure
 * is managed by tkError.c.
 */

typedef struct TkErrorHandler {
    TkDisplay *dispPtr;		/* Display to which handler applies. */
    unsigned long firstRequest;	/* Only errors with serial numbers
				 * >= to this are considered. */
    unsigned long lastRequest;	/* Only errors with serial numbers
				 * <= to this are considered.  This
				 * field is filled in when XUnhandle
				 * is called.  -1 means XUnhandle
				 * hasn't been called yet. */
    int error;			/* Consider only errors with this
				 * error_code (-1 means consider
				 * all errors). */
    int request;		/* Consider only errors with this
				 * major request code (-1 means
				 * consider all major codes). */
    int minorCode;		/* Consider only errors with this
				 * minor request code (-1 means
				 * consider all minor codes). */
    Tk_ErrorProc *errorProc;	/* Procedure to invoke when a matching
				 * error occurs.  NULL means just ignore
				 * errors. */
    ClientData clientData;	/* Arbitrary value to pass to
				 * errorProc. */
    struct TkErrorHandler *nextPtr;
				/* Pointer to next older handler for
				 * this display, or NULL for end of
				 * list. */
} TkErrorHandler;


/*
 * One of the following structures exists for each event handler
 * created by calling Tk_CreateEventHandler.  This information
 * is used by tkEvent.c only.
 */

typedef struct TkEventHandler {
    unsigned long mask;		/* Events for which to invoke
				 * proc. */
    Tk_EventProc *proc;		/* Procedure to invoke when an event
				 * in mask occurs. */
    ClientData clientData;	/* Argument to pass to proc. */
    struct TkEventHandler *nextPtr;
				/* Next in list of handlers
				 * associated with window (NULL means
				 * end of list). */
} TkEventHandler;

/*
 * Tk keeps one of the following data structures for each main
 * window (created by a call to TkCreateMainWindow).  It stores
 * information that is shared by all of the windows associated
 * with a particular main window.
 */

typedef struct TkMainInfo {
    int refCount;		/* Number of windows whose "mainPtr" fields
				 * point here.  When this becomes zero, can
				 * free up the structure (the reference
				 * count is zero because windows can get
				 * deleted in almost any order;  the main
				 * window isn't necessarily the last one
				 * deleted). */
    struct TkWindow *winPtr;	/* Pointer to main window. */
    Tcl_Interp *interp;		/* Interpreter associated with application. */
    Tcl_HashTable nameTable;	/* Hash table mapping path names to TkWindow
				 * structs for all windows related to this
				 * main window.  Managed by tkWindow.c. */
    long deletionEpoch;		/* Incremented by window deletions */
    Tk_BindingTable bindingTable;
				/* Used in conjunction with "bind" command
				 * to bind events to Tcl commands. */
    TkBindInfo bindInfo;	/* Information used by tkBind.c on a per
				 * application basis. */
    struct TkFontInfo *fontInfoPtr;
				/* Information used by tkFont.c on a per
				 * application basis. */

    /*
     * Information used only by tkFocus.c and tk*Embed.c:
     */

    struct TkToplevelFocusInfo *tlFocusPtr;
				/* First in list of records containing focus
				 * information for each top-level in the
				 * application.  Used only by tkFocus.c. */
    struct TkDisplayFocusInfo *displayFocusPtr;
				/* First in list of records containing focus
				 * information for each display that this
				 * application has ever used.  Used only
				 * by tkFocus.c. */

    struct ElArray *optionRootPtr;
				/* Top level of option hierarchy for this
				 * main window.  NULL means uninitialized.
				 * Managed by tkOption.c. */
    Tcl_HashTable imageTable;	/* Maps from image names to Tk_ImageMaster
				 * structures.  Managed by tkImage.c. */
    int strictMotif;		/* This is linked to the tk_strictMotif
				 * global variable. */
    struct TkMainInfo *nextPtr;	/* Next in list of all main windows managed by
				 * this process. */
} TkMainInfo;

/*
 * Tk keeps the following data structure for each of it's builtin
 * bitmaps.  This structure is only used by tkBitmap.c and other
 * platform specific bitmap files.
 */

typedef struct {
    CONST char *source;		/* Bits for bitmap. */
    int width, height;		/* Dimensions of bitmap. */
    int native;			/* 0 means generic (X style) bitmap,
    				 * 1 means native style bitmap. */
} TkPredefBitmap;

/*
 * Tk keeps one of the following structures for each window.
 * Some of the information (like size and location) is a shadow
 * of information managed by the X server, and some is special
 * information used here, such as event and geometry management
 * information.  This information is (mostly) managed by tkWindow.c.
 * WARNING: the declaration below must be kept consistent with the
 * Tk_FakeWin structure in tk.h.  If you change one, be sure to
 * change the other!!
 */

typedef struct TkWindow {

    /*
     * Structural information:
     */

    Display *display;		/* Display containing window. */
    TkDisplay *dispPtr;		/* Tk's information about display
				 * for window. */
    int screenNum;		/* Index of screen for window, among all
				 * those for dispPtr. */
    Visual *visual;		/* Visual to use for window.  If not default,
				 * MUST be set before X window is created. */
    int depth;			/* Number of bits/pixel. */
    Window window;		/* X's id for window.   NULL means window
				 * hasn't actually been created yet, or it's
				 * been deleted. */
    struct TkWindow *childList;	/* First in list of child windows,
				 * or NULL if no children.  List is in
				 * stacking order, lowest window first.*/
    struct TkWindow *lastChildPtr;
				/* Last in list of child windows (highest
				 * in stacking order), or NULL if no
				 * children. */
    struct TkWindow *parentPtr;	/* Pointer to parent window (logical
				 * parent, not necessarily X parent).  NULL
				 * means either this is the main window, or
				 * the window's parent has already been
				 * deleted. */
    struct TkWindow *nextPtr;	/* Next higher sibling (in stacking order)
				 * in list of children with same parent.  NULL
				 * means end of list. */
    TkMainInfo *mainPtr;	/* Information shared by all windows
				 * associated with a particular main
				 * window.  NULL means this window is
				 * a rogue that isn't associated with
				 * any application (at present, this
				 * only happens for the dummy windows
				 * used for "send" communication).  */

    /*
     * Name and type information for the window:
     */

    char *pathName;		/* Path name of window (concatenation
				 * of all names between this window and
				 * its top-level ancestor).  This is a
				 * pointer into an entry in
				 * mainPtr->nameTable.  NULL means that
				 * the window hasn't been completely
				 * created yet. */
    Tk_Uid nameUid;		/* Name of the window within its parent
				 * (unique within the parent). */
    Tk_Uid classUid;		/* Class of the window.  NULL means window
				 * hasn't been given a class yet. */

    /*
     * Geometry and other attributes of window.  This information
     * may not be updated on the server immediately;  stuff that
     * hasn't been reflected in the server yet is called "dirty".
     * At present, information can be dirty only if the window
     * hasn't yet been created.
     */

    XWindowChanges changes;	/* Geometry and other info about
				 * window. */
    unsigned int dirtyChanges;	/* Bits indicate fields of "changes"
				 * that are dirty. */
    XSetWindowAttributes atts;	/* Current attributes of window. */
    unsigned long dirtyAtts;	/* Bits indicate fields of "atts"
				 * that are dirty. */

    unsigned int flags;		/* Various flag values:  these are all
				 * defined in tk.h (confusing, but they're
				 * needed there for some query macros). */

    /*
     * Information kept by the event manager (tkEvent.c):
     */

    TkEventHandler *handlerList;/* First in list of event handlers
				 * declared for this window, or
				 * NULL if none. */
#ifdef TK_USE_INPUT_METHODS
    XIC inputContext;		/* XIM input context. */
#endif /* TK_USE_INPUT_METHODS */

    /*
     * Information used for event bindings (see "bind" and "bindtags"
     * commands in tkCmds.c):
     */

    ClientData *tagPtr;		/* Points to array of tags used for bindings
				 * on this window.  Each tag is a Tk_Uid.
				 * Malloc'ed.  NULL means no tags. */
    int numTags;		/* Number of tags at *tagPtr. */

    /*
     * Information used by tkOption.c to manage options for the
     * window.
     */

    int optionLevel;		/* -1 means no option information is
				 * currently cached for this window.
				 * Otherwise this gives the level in
				 * the option stack at which info is
				 * cached. */
    /*
     * Information used by tkSelect.c to manage the selection.
     */

    struct TkSelHandler *selHandlerList;
				/* First in list of handlers for
				 * returning the selection in various
				 * forms. */

    /*
     * Information used by tkGeometry.c for geometry management.
     */

    Tk_GeomMgr *geomMgrPtr;	/* Information about geometry manager for
				 * this window. */
    ClientData geomData;	/* Argument for geometry manager procedures. */
    int reqWidth, reqHeight;	/* Arguments from last call to
				 * Tk_GeometryRequest, or 0's if
				 * Tk_GeometryRequest hasn't been
				 * called. */
    int internalBorderLeft;	/* Width of internal border of window
				 * (0 means no internal border).  Geometry
				 * managers should not normally place children
				 * on top of the border. 
				 * Fields for the other three sides are found 
				 * below. */

    /*
     * Information maintained by tkWm.c for window manager communication.
     */

    struct TkWmInfo *wmInfoPtr;	/* For top-level windows (and also
				 * for special Unix menubar and wrapper
				 * windows), points to structure with
				 * wm-related info (see tkWm.c).  For
				 * other windows, this is NULL. */

    /*
     * Information used by widget classes.
     */

    Tk_ClassProcs *classProcsPtr;
    ClientData instanceData;

    /*
     * Platform specific information private to each port.
     */

    struct TkWindowPrivate *privatePtr;

    /*
     * More information used by tkGeometry.c for geometry management.
     */

    /* The remaining fields of internal border. */
    int internalBorderRight; 
    int internalBorderTop;
    int internalBorderBottom;
    
    int minReqWidth;		/* Minimum requested width. */
    int minReqHeight;		/* Minimum requested height. */
} TkWindow;

/*
 * The following structure is used as a two way map between integers
 * and strings, usually to map between an internal C representation
 * and the strings used in Tcl.
 */

typedef struct TkStateMap {
    int numKey;			/* Integer representation of a value. */
    char *strKey;		/* String representation of a value. */
} TkStateMap;

/*
 * This structure is used by the Mac and Window porting layers as
 * the internal representation of a clip_mask in a GC.
 */

typedef struct TkpClipMask {
    int type;			/* One of TKP_CLIP_PIXMAP or TKP_CLIP_REGION */
    union {
	Pixmap pixmap;
	TkRegion region;
    } value;
} TkpClipMask;

#define TKP_CLIP_PIXMAP 0
#define TKP_CLIP_REGION 1

/*
 * Pointer to first entry in list of all displays currently known.
 */

extern TkDisplay *tkDisplayList;

/*
 * Return values from TkGrabState:
 */

#define TK_GRAB_NONE		0
#define TK_GRAB_IN_TREE		1
#define TK_GRAB_ANCESTOR	2
#define TK_GRAB_EXCLUDED	3

/*
 * The macro below is used to modify a "char" value (e.g. by casting
 * it to an unsigned character) so that it can be used safely with
 * macros such as isspace.
 */

#define UCHAR(c) ((unsigned char) (c))

/*
 * The following symbol is used in the mode field of FocusIn events
 * generated by an embedded application to request the input focus from
 * its container.
 */

#define EMBEDDED_APP_WANTS_FOCUS (NotifyNormal + 20)

/*
 * The following special modifier mask bits are defined, to indicate
 * logical modifiers such as Meta and Alt that may float among the
 * actual modifier bits.
 */

#define META_MASK	(AnyModifier<<1)
#define ALT_MASK	(AnyModifier<<2)

/*
 * Object types not declared in tkObj.c need to be mentioned here so
 * they can be properly registered with Tcl:
 */

extern Tcl_ObjType tkBorderObjType;
extern Tcl_ObjType tkBitmapObjType;
extern Tcl_ObjType tkColorObjType;
extern Tcl_ObjType tkCursorObjType;
extern Tcl_ObjType tkFontObjType;
extern Tcl_ObjType tkOptionObjType;
extern Tcl_ObjType tkStateKeyObjType;

/*
 * Miscellaneous variables shared among Tk modules but not exported
 * to the outside world:
 */

extern Tk_SmoothMethod		tkBezierSmoothMethod;
extern Tk_ImageType		tkBitmapImageType;
extern Tk_PhotoImageFormat	tkImgFmtGIF;
extern void			(*tkHandleEventProc) _ANSI_ARGS_((
    				    XEvent* eventPtr));
extern Tk_PhotoImageFormat	tkImgFmtPPM;
extern TkMainInfo		*tkMainWindowList;
extern Tk_ImageType		tkPhotoImageType;
extern Tcl_HashTable		tkPredefBitmapTable;
extern int			tkSendSerial;

#include "tkIntDecls.h"

#ifdef BUILD_tk
# undef TCL_STORAGE_CLASS
# define TCL_STORAGE_CLASS DLLEXPORT
#endif

/*
 * Internal procedures shared among Tk modules but not exported
 * to the outside world:
 */

EXTERN int		Tk_BellObjCmd _ANSI_ARGS_((ClientData clientData,
			    Tcl_Interp *interp, int objc, 
			    Tcl_Obj *CONST objv[]));
EXTERN int		Tk_BindObjCmd _ANSI_ARGS_((ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]));
EXTERN int		Tk_BindtagsObjCmd _ANSI_ARGS_((ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]));
EXTERN int		Tk_ButtonObjCmd _ANSI_ARGS_((ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]));
EXTERN int		Tk_CanvasObjCmd _ANSI_ARGS_((ClientData clientData,
			    Tcl_Interp *interp, int argc,
			    Tcl_Obj *CONST objv[]));
EXTERN int		Tk_CheckbuttonObjCmd _ANSI_ARGS_((
			    ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]));
EXTERN int              Tk_ClipboardObjCmd _ANSI_ARGS_((
			    ClientData clientData, Tcl_Interp *interp,
			    int objc, Tcl_Obj *CONST objv[]));
EXTERN int              Tk_ChooseColorObjCmd _ANSI_ARGS_((
			    ClientData clientData, Tcl_Interp *interp,
			    int objc, Tcl_Obj *CONST objv[]));
EXTERN int              Tk_ChooseDirectoryObjCmd _ANSI_ARGS_((
			    ClientData clientData, Tcl_Interp *interp,
			    int objc, Tcl_Obj *CONST objv[]));
EXTERN int              Tk_ChooseFontObjCmd _ANSI_ARGS_((ClientData clientData,
			    Tcl_Interp *interp, int objc, 
			    Tcl_Obj *CONST objv[]));
EXTERN int		Tk_DestroyObjCmd _ANSI_ARGS_((ClientData clientData,
			    Tcl_Interp *interp, int objc, 
			    Tcl_Obj *CONST objv[]));
EXTERN int		Tk_EntryObjCmd _ANSI_ARGS_((ClientData clientData,
			    Tcl_Interp *interp, int objc, 
                            Tcl_Obj *CONST objv[]));
EXTERN int		Tk_EventObjCmd _ANSI_ARGS_((ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]));
EXTERN int		Tk_FileeventCmd _ANSI_ARGS_((ClientData clientData,
			    Tcl_Interp *interp, int argc, char **argv));
EXTERN int		Tk_FrameObjCmd _ANSI_ARGS_((ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]));
EXTERN int		Tk_FocusObjCmd _ANSI_ARGS_((ClientData clientData,
			    Tcl_Interp *interp, int objc, 
			    Tcl_Obj *CONST objv[]));
EXTERN int		Tk_FontObjCmd _ANSI_ARGS_((ClientData clientData,
			    Tcl_Interp *interp, int objc, 
			    Tcl_Obj *CONST objv[]));
EXTERN int              Tk_GetOpenFileObjCmd _ANSI_ARGS_((
			    ClientData clientData,
			    Tcl_Interp *interp, int objc, 
			    Tcl_Obj *CONST objv[]));
EXTERN int              Tk_GetSaveFileObjCmd _ANSI_ARGS_((
			    ClientData clientData,
			    Tcl_Interp *interp, int objc, 
			    Tcl_Obj *CONST objv[]));
EXTERN int		Tk_GrabObjCmd _ANSI_ARGS_((ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]));
EXTERN int		Tk_GridObjCmd _ANSI_ARGS_((ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]));
EXTERN int		Tk_ImageObjCmd _ANSI_ARGS_((ClientData clientData,
			    Tcl_Interp *interp, int objc, 
			    Tcl_Obj *CONST objv[]));
EXTERN int		Tk_LabelObjCmd _ANSI_ARGS_((ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]));
EXTERN int		Tk_LabelframeObjCmd _ANSI_ARGS_((ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]));
EXTERN int		Tk_ListboxObjCmd _ANSI_ARGS_((ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]));
EXTERN int		Tk_LowerObjCmd _ANSI_ARGS_((ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]));
EXTERN int		Tk_MenubuttonObjCmd _ANSI_ARGS_((ClientData clientData,
			    Tcl_Interp *interp, int objc, 
			    Tcl_Obj *CONST objv[]));
EXTERN int              Tk_MessageBoxObjCmd _ANSI_ARGS_((ClientData clientData,
                            Tcl_Interp *interp, int objc, 
			    Tcl_Obj *CONST objv[]));
EXTERN int		Tk_MessageObjCmd _ANSI_ARGS_((ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]));
EXTERN int		Tk_PanedWindowObjCmd _ANSI_ARGS_((
			    ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]));
EXTERN int		Tk_OptionObjCmd _ANSI_ARGS_((ClientData clientData,
			    Tcl_Interp *interp, int objc,
	                    Tcl_Obj *CONST objv[]));
EXTERN int		Tk_PackObjCmd _ANSI_ARGS_((ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]));
EXTERN int		Tk_PlaceObjCmd _ANSI_ARGS_((ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]));
EXTERN int		Tk_RadiobuttonObjCmd _ANSI_ARGS_((
			    ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]));
EXTERN int		Tk_RaiseObjCmd _ANSI_ARGS_((ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]));
EXTERN int		Tk_ScaleObjCmd _ANSI_ARGS_((ClientData clientData,
			    Tcl_Interp *interp, int objc, 
                            Tcl_Obj *CONST objv[]));
EXTERN int		Tk_ScrollbarCmd _ANSI_ARGS_((ClientData clientData,
			    Tcl_Interp *interp, int argc, CONST char **argv));
EXTERN int		Tk_SelectionObjCmd _ANSI_ARGS_((ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]));
EXTERN int		Tk_SendCmd _ANSI_ARGS_((ClientData clientData,
			    Tcl_Interp *interp, int argc, CONST char **argv));
EXTERN int		Tk_SendObjCmd _ANSI_ARGS_((ClientData clientData,
			    Tcl_Interp *interp, int objc, 
			    Tcl_Obj *CONST objv[]));
EXTERN int		Tk_SpinboxObjCmd _ANSI_ARGS_((ClientData clientData,
			    Tcl_Interp *interp, int objc, 
                            Tcl_Obj *CONST objv[]));
EXTERN int		Tk_TextCmd _ANSI_ARGS_((ClientData clientData,
			    Tcl_Interp *interp, int argc, CONST char **argv));
EXTERN int		Tk_TkObjCmd _ANSI_ARGS_((ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]));
EXTERN int		Tk_TkwaitObjCmd _ANSI_ARGS_((ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]));
EXTERN int		Tk_ToplevelObjCmd _ANSI_ARGS_((ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]));
EXTERN int		Tk_UpdateObjCmd _ANSI_ARGS_((ClientData clientData,
			    Tcl_Interp *interp, int objc, 
			    Tcl_Obj *CONST objv[]));
EXTERN int		Tk_WinfoObjCmd _ANSI_ARGS_((ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]));
EXTERN int		Tk_WmObjCmd _ANSI_ARGS_((ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]));

EXTERN void		TkConsolePrint _ANSI_ARGS_((Tcl_Interp *interp,
			    int devId, CONST char *buffer, long size));

EXTERN void		TkEventInit _ANSI_ARGS_((void));

EXTERN void		TkRegisterObjTypes _ANSI_ARGS_((void));

EXTERN int		TkCreateMenuCmd _ANSI_ARGS_((Tcl_Interp *interp));
EXTERN int		TkDeadAppCmd _ANSI_ARGS_((ClientData clientData,
			    Tcl_Interp *interp, int argc, CONST char **argv));

EXTERN int		TkpTestembedCmd _ANSI_ARGS_((ClientData clientData,
			    Tcl_Interp *interp, int argc, CONST char **argv));
EXTERN int		TkCanvasGetCoordObj _ANSI_ARGS_((Tcl_Interp *interp,
			    Tk_Canvas canvas, Tcl_Obj *obj,
			    double *doublePtr));
EXTERN int		TkCanvasDashParseProc _ANSI_ARGS_((
			    ClientData clientData, Tcl_Interp *interp,
			    Tk_Window tkwin, CONST char *value, char *widgRec,
			    int offset));
EXTERN char *		TkCanvasDashPrintProc _ANSI_ARGS_((
			    ClientData clientData, Tk_Window tkwin,
			    char *widgRec, int offset,
			    Tcl_FreeProc **freeProcPtr));
EXTERN int		TkGetDoublePixels _ANSI_ARGS_((Tcl_Interp *interp,
			    Tk_Window tkwin, CONST char *string,
			    double *doublePtr));
EXTERN int		TkOffsetParseProc _ANSI_ARGS_((
			    ClientData clientData, Tcl_Interp *interp,
			    Tk_Window tkwin, CONST char *value, char *widgRec,
			    int offset));
EXTERN char *		TkOffsetPrintProc _ANSI_ARGS_((
			    ClientData clientData, Tk_Window tkwin,
			    char *widgRec, int offset,
			    Tcl_FreeProc **freeProcPtr));
EXTERN int		TkOrientParseProc _ANSI_ARGS_((
			    ClientData clientData, Tcl_Interp *interp,
			    Tk_Window tkwin, CONST char *value,
			    char *widgRec, int offset));
EXTERN char *		TkOrientPrintProc _ANSI_ARGS_((
			    ClientData clientData, Tk_Window tkwin,
			    char *widgRec, int offset,
			    Tcl_FreeProc **freeProcPtr));
EXTERN int		TkPixelParseProc _ANSI_ARGS_((
			    ClientData clientData, Tcl_Interp *interp,
			    Tk_Window tkwin, CONST char *value, char *widgRec,
			    int offset));
EXTERN char *		TkPixelPrintProc _ANSI_ARGS_((
			    ClientData clientData, Tk_Window tkwin,
			    char *widgRec, int offset,
			    Tcl_FreeProc **freeProcPtr));
EXTERN int		TkPostscriptImage _ANSI_ARGS_((Tcl_Interp *interp,
			    Tk_Window tkwin, Tk_PostscriptInfo psInfo,
			    XImage *ximage, int x, int y, int width,
			    int height));
EXTERN int		TkSmoothParseProc _ANSI_ARGS_((ClientData clientData,
			    Tcl_Interp *interp, Tk_Window tkwin,
			    CONST char *value, char *recordPtr, int offset));
EXTERN char *		TkSmoothPrintProc _ANSI_ARGS_((ClientData clientData,
			    Tk_Window tkwin, char *recordPtr, int offset,
			    Tcl_FreeProc **freeProcPtr));
EXTERN int		TkStateParseProc _ANSI_ARGS_((
			    ClientData clientData, Tcl_Interp *interp,
			    Tk_Window tkwin, CONST char *value,
			    char *widgRec, int offset));
EXTERN char *		TkStatePrintProc _ANSI_ARGS_((
			    ClientData clientData, Tk_Window tkwin,
			    char *widgRec, int offset,
			    Tcl_FreeProc **freeProcPtr));
EXTERN int		TkTileParseProc _ANSI_ARGS_((
			    ClientData clientData, Tcl_Interp *interp,
			    Tk_Window tkwin, CONST char *value, char *widgRec,
			    int offset));
EXTERN char *		TkTilePrintProc _ANSI_ARGS_((
			    ClientData clientData, Tk_Window tkwin,
			    char *widgRec, int offset,
			    Tcl_FreeProc **freeProcPtr));
EXTERN void		TkCreateExitHandler _ANSI_ARGS_((Tcl_ExitProc *proc,
			    ClientData clientData));
EXTERN void		TkDeleteExitHandler _ANSI_ARGS_((Tcl_ExitProc *proc,
			    ClientData clientData));
EXTERN Tcl_ExitProc	TkFinalize;
EXTERN void		TkPrintPadAmount _ANSI_ARGS_((Tcl_Interp *interp,
			    char *buffer, int pad1, int pad2));
EXTERN int		TkParsePadAmount _ANSI_ARGS_((Tcl_Interp *interp,
			    Tk_Window tkwin, Tcl_Obj *objPtr,
			    int *pad1Ptr, int *pad2Ptr));

/*
 * Unsupported commands.
 */
EXTERN int		TkUnsupported1ObjCmd _ANSI_ARGS_((
			    ClientData clientData, Tcl_Interp *interp,
			    int objc, Tcl_Obj *CONST objv[]));

# undef TCL_STORAGE_CLASS
# define TCL_STORAGE_CLASS DLLIMPORT

#endif  /* _TKINT */