627 lines
22 KiB
C
627 lines
22 KiB
C
/*
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* tkInt.h --
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*
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* Declarations for things used internally by the Tk
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* procedures but not exported outside the module.
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*
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* Copyright (c) 1990-1993 The Regents of the University of California.
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* All rights reserved.
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*
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* Permission is hereby granted, without written agreement and without
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* license or royalty fees, to use, copy, modify, and distribute this
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* software and its documentation for any purpose, provided that the
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* above copyright notice and the following two paragraphs appear in
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* all copies of this software.
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*
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* IN NO EVENT SHALL THE UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY FOR
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* DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT
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* OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF THE UNIVERSITY OF
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* CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY WARRANTIES,
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* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
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* AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
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* ON AN "AS IS" BASIS, AND THE UNIVERSITY OF CALIFORNIA HAS NO OBLIGATION TO
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* PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
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*
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* $Header: /user6/ouster/wish/RCS/tkInt.h,v 1.98 93/10/07 09:59:17 ouster Exp $ SPRITE (Berkeley)
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*/
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#ifndef _TKINT
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#define _TKINT
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#ifndef _XLIB_H_
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#include <X11/Xlib.h>
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#endif
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#ifndef _XUTIL_H
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#include <X11/Xutil.h>
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#endif
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#ifndef _TK
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#include "tk.h"
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#endif
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#ifndef _TCL
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#include "tcl.h"
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#endif
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/*
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* Opaque type declarations:
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*/
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typedef struct Tk_PostscriptInfo Tk_PostscriptInfo;
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typedef struct TkGrabEvent TkGrabEvent;
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/*
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* One of the following structures is maintained for each display
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* containing a window managed by Tk:
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*/
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typedef struct TkDisplay {
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Display *display; /* Xlib's info about display. */
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struct TkDisplay *nextPtr; /* Next in list of all displays. */
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char *name; /* Name of display (with any screen
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* identifier removed). Malloc-ed. */
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Time lastEventTime; /* Time of last event received for this
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* display. */
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/*
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* Information used by tkFocus.c and tkEvent.c:
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*/
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struct TkWindow *focusTopLevelPtr;
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/* Pointer to the top-level window that
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* currently contains the focus for this
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* display. NULL means none of the
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* top-levels managed by this application
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* contains the focus. */
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int focussedOnEnter; /* Non-zero means the focus was set
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* implicitly from an Enter event rather
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* than from a FocusIn event. */
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/*
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* Information used primarily by tkBind.c:
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*/
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int bindInfoStale; /* Non-zero means the variables in this
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* part of the structure are potentially
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* incorrect and should be recomputed. */
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unsigned int modeModMask; /* Has one bit set to indicate the modifier
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* corresponding to "mode shift". If no
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* such modifier, than this is zero. */
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unsigned int ignoreModMask; /* If any of the following modifiers are
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* present in an event but not in the
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* corresponding pattern, they don't prevent
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* the pattern from matching the event. */
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enum {IGNORE, CAPS, SHIFT} lockUsage;
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/* Indicates how to interpret lock modifier. */
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int numModKeyCodes; /* Number of entries in modKeyCodes array
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* below. */
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KeyCode *modKeyCodes; /* Pointer to an array giving keycodes for
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* all of the keys that have modifiers
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* associated with them. Malloc'ed, but
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* may be NULL. */
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/*
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* Information used by tkError.c only:
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*/
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struct TkErrorHandler *errorPtr;
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/* First in list of error handlers
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* for this display. NULL means
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* no handlers exist at present. */
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int deleteCount; /* Counts # of handlers deleted since
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* last time inactive handlers were
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* garbage-collected. When this number
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* gets big, handlers get cleaned up. */
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int (*defaultHandler) _ANSI_ARGS_((Display *display,
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XErrorEvent *eventPtr));
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/* X's default event handler: invoked
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* if an error occurs that we can't handle
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* ourselves. */
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/*
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* Information used by tkSend.c only:
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*/
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Tk_Window commWindow; /* Window used for communication
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* between interpreters during "send"
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* commands. NULL means send info hasn't
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* been initialized yet. */
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Atom commProperty; /* X's name for comm property. */
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Atom registryProperty; /* X's name for property containing
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* registry of interpreter names. */
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int serverSecure; /* Non-zero means the server appears to
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* be reasonably secure; zero means we
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* should reject incoming sends because
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* they can't be trusted. */
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/*
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* Information used by tkSelect.c only:
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*/
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Tk_Window selectionOwner; /* Current owner of selection, or
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* NULL if selection isn't owned by
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* a window in this process. */
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int selectionSerial; /* Serial number of last XSelectionSetOwner
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* request we made to server (used to
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* filter out redundant SelectionClear
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* events. */
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Time selectionTime; /* Timestamp used to acquire selection. */
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Atom multipleAtom; /* Atom for MULTIPLE. None means
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* selection stuff isn't initialized. */
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Atom incrAtom; /* Atom for INCR. */
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Atom targetsAtom; /* Atom for TARGETS. */
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Atom timestampAtom; /* Atom for TIMESTAMP. */
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Atom textAtom; /* Atom for TEXT. */
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Atom compoundTextAtom; /* Atom for COMPOUND_TEXT. */
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Atom applicationAtom; /* Atom for APPLICATION. */
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Atom windowNameAtom; /* Atom for WINDOW_NAME. */
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/*
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* Information used by tkAtom.c only:
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*/
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int atomInit; /* 0 means stuff below hasn't been
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* initialized yet. */
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Tcl_HashTable nameTable; /* Maps from names to Atom's. */
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Tcl_HashTable atomTable; /* Maps from Atom's back to names. */
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/*
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* Information used by tkCursor.c only:
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*/
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Font cursorFont; /* Font to use for standard cursors.
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* None means font not loaded yet. */
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/*
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* Information used by tkGrab.c only:
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*/
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struct TkWindow *grabWinPtr;
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/* Window in which the pointer is currently
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* grabbed, or NULL if none. */
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struct TkWindow *eventualGrabWinPtr;
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/* Value that grabWinPtr will have once the
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* grab event queue (below) has been
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* completely emptied. */
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struct TkWindow *buttonWinPtr;
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/* Window in which first mouse button was
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* pressed while grab was in effect, or NULL
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* if no such press in effect. */
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struct TkWindow *serverWinPtr;
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/* If no application contains the pointer then
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* this is NULL. Otherwise it contains the
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* last window for which we've gotten an
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* Enter or Leave event from the server (i.e.
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* the last window known to have contained
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* the pointer). Doesn't reflect events
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* that were synthesized in tkGrab.c. */
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TkGrabEvent *firstGrabEventPtr;
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/* First in list of enter/leave events
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* synthesized by grab code. These events
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* must be processed in order before any other
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* events are processed. NULL means no such
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* events. */
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TkGrabEvent *lastGrabEventPtr;
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/* Last in list of synthesized events, or NULL
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* if list is empty. */
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int grabFlags; /* Miscellaneous flag values. See definitions
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* in tkGrab.c. */
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/*
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* Miscellaneous information:
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*/
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Tk_ColorModel *colorModels; /* Array of color models, one per screen;
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* indicates whether windows should attempt
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* to use full color for display, just mono,
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* etc. Malloc'ed. */
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} TkDisplay;
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/*
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* One of the following structures exists for each error handler
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* created by a call to Tk_CreateErrorHandler. The structure
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* is managed by tkError.c.
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*/
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typedef struct TkErrorHandler {
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TkDisplay *dispPtr; /* Display to which handler applies. */
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unsigned long firstRequest; /* Only errors with serial numbers
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* >= to this are considered. */
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unsigned long lastRequest; /* Only errors with serial numbers
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* <= to this are considered. This
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* field is filled in when XUnhandle
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* is called. -1 means XUnhandle
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* hasn't been called yet. */
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int error; /* Consider only errors with this
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* error_code (-1 means consider
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* all errors). */
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int request; /* Consider only errors with this
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* major request code (-1 means
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* consider all major codes). */
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int minorCode; /* Consider only errors with this
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* minor request code (-1 means
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* consider all minor codes). */
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Tk_ErrorProc *errorProc; /* Procedure to invoke when a matching
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* error occurs. NULL means just ignore
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* errors. */
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ClientData clientData; /* Arbitrary value to pass to
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* errorProc. */
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struct TkErrorHandler *nextPtr;
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/* Pointer to next older handler for
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* this display, or NULL for end of
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* list. */
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} TkErrorHandler;
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/*
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* One of the following structures exists for each event handler
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* created by calling Tk_CreateEventHandler. This information
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* is used by tkEvent.c only.
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*/
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typedef struct TkEventHandler {
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unsigned long mask; /* Events for which to invoke
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* proc. */
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Tk_EventProc *proc; /* Procedure to invoke when an event
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* in mask occurs. */
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ClientData clientData; /* Argument to pass to proc. */
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struct TkEventHandler *nextPtr;
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/* Next in list of handlers
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* associated with window (NULL means
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* end of list). */
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} TkEventHandler;
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/*
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* One of the following structures exists for each selection
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* handler created by calling Tk_CreateSelHandler. This
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* information is used by tkSelect.c only.
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*/
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typedef struct TkSelHandler {
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Atom target; /* Target type for selection
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* conversion, such as TARGETS or
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* STRING. */
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Atom format; /* Format in which selection
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* info will be returned, such
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* as STRING or ATOM. */
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Tk_SelectionProc *proc; /* Procedure to generate selection
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* in this format. */
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ClientData clientData; /* Argument to pass to proc. */
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int size; /* Size of units returned by proc
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* (8 for STRING, 32 for almost
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* anything else). */
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struct TkSelHandler *nextPtr;
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/* Next selection handler associated
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* with same window (NULL for end of
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* list). */
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} TkSelHandler;
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/*
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* Tk keeps one of the following data structures for each main
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* window (created by a call to Tk_CreateMainWindow). It stores
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* information that is shared by all of the windows associated
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* with a particular main window.
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*/
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typedef struct TkMainInfo {
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struct TkWindow *winPtr; /* Pointer to main window. */
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Tcl_Interp *interp; /* Interpreter associated with application. */
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Tcl_HashTable nameTable; /* Hash table mapping path names to TkWindow
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* structs for all windows related to this
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* main window. Managed by tkWindow.c. */
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Tk_BindingTable bindingTable;
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/* Used in conjunction with "bind" command
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* to bind events to Tcl commands. */
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struct TkWindow *focusPtr; /* Identifies window that currently has the
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* focus (or that will get the focus the next
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* time the pointer enters any of the top-level
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* windows associated with this main window).
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* NULL means nobody has the focus.
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* Managed by tkFocus.c. */
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struct TkWindow *focusDefaultPtr;
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/* Window that is to receive the focus by
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* default when the focusPtr window is
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* deleted. */
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struct ElArray *optionRootPtr;
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/* Top level of option hierarchy for this
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* main window. NULL means uninitialized.
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* Managed by tkOption.c. */
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struct TkMainInfo *nextPtr; /* Next in list of all main windows managed by
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* this process. */
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} TkMainInfo;
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/*
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* Tk keeps one of the following structures for each window.
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* Some of the information (like size and location) is a shadow
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* of information managed by the X server, and some is special
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* information used here, such as event and geometry management
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* information. This information is (mostly) managed by tkWindow.c.
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* WARNING: the declaration below must be kept consistent with the
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* Tk_ClientWindow structure in tk.h. If you change one, be sure to
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* change the other!!
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*/
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typedef struct TkWindow {
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/*
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* Structural information:
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*/
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Display *display; /* Display containing window. */
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TkDisplay *dispPtr; /* Tk's information about display
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* for window. */
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int screenNum; /* Index of screen for window, among all
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* those for dispPtr. */
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Visual *visual; /* Visual to use for window. If not default,
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* MUST be set before X window is created. */
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int depth; /* Number of bits/pixel. */
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Window window; /* X's id for window. NULL means window
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* hasn't actually been created yet, or it's
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* been deleted. */
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struct TkWindow *childList; /* First in list of child windows,
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* or NULL if no children. */
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struct TkWindow *lastChildPtr;
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/* Last in list of child windows, or NULL
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* if no children. */
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struct TkWindow *parentPtr; /* Pointer to parent window (logical
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* parent, not necessarily X parent), or
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* NULL if this is a main window. */
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struct TkWindow *nextPtr; /* Next in list of children with
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* same parent (NULL if end of
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* list). */
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TkMainInfo *mainPtr; /* Information shared by all windows
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* associated with a particular main
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* window. NULL means this window is
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* a rogue that isn't associated with
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* any application (at present, there
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* should never be any rogues). */
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/*
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* Name and type information for the window:
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*/
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char *pathName; /* Path name of window (concatenation
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* of all names between this window and
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* its top-level ancestor). This is a
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* pointer into an entry in
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* mainPtr->nameTable or NULL if mainPtr
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* is NULL. */
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Tk_Uid nameUid; /* Name of the window within its parent
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* (unique within the parent). */
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Tk_Uid classUid; /* Class of the window. NULL means window
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* hasn't been given a class yet. */
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/*
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* Geometry and other attributes of window. This information
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* may not be updated on the server immediately; stuff that
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* hasn't been reflected in the server yet is called "dirty".
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* At present, information can be dirty only if the window
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* hasn't yet been created.
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*/
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XWindowChanges changes; /* Geometry and other info about
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* window. */
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unsigned int dirtyChanges; /* Bits indicate fields of "changes"
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* that are dirty. */
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XSetWindowAttributes atts; /* Current attributes of window. */
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unsigned long dirtyAtts; /* Bits indicate fields of "atts"
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* that are dirty. */
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unsigned int flags; /* Various flag values: these are all
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* defined in tk.h (confusing, but they're
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* needed there for some query macros). */
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/*
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* Information kept by the event manager (tkEvent.c):
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*/
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TkEventHandler *handlerList;/* First in list of event handlers
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* declared for this window, or
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* NULL if none. */
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/*
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* Information related to input focussing (tkFocus.c):
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*/
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Tk_FocusProc *focusProc; /* Procedure to invoke when this window
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* gets or loses the input focus. NULL
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* means this window is not prepared to
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* receive the focus. */
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ClientData focusData; /* Arbitrary value to pass to focusProc. */
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/*
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* Information used by tkOption.c to manage options for the
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* window.
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*/
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int optionLevel; /* -1 means no option information is
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* currently cached for this window.
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* Otherwise this gives the level in
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* the option stack at which info is
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* cached. */
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/*
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* Information used by tkSelect.c to manage the selection.
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*/
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TkSelHandler *selHandlerList;
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/* First in list of handlers for
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* returning the selection in various
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* forms. */
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Tk_LostSelProc *selClearProc;
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ClientData selClearData; /* Info to pass to selClearProc. */
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/*
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* Information used by tkGeometry.c for geometry management.
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*/
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Tk_GeometryProc *geomProc; /* Procedure to handle geometry
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* requests (NULL means no window is
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* unmanaged). */
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ClientData geomData; /* Argument for geomProc. */
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int reqWidth, reqHeight; /* Arguments from last call to
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* Tk_GeometryRequest, or 0's if
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* Tk_GeometryRequest hasn't been
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* called. */
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int internalBorderWidth; /* Width of internal border of window
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* (0 means no internal border). Geom.
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* mgr. should not place children on top
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* of the border. */
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/*
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* Information maintained by tkWm.c for window manager communication.
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*/
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struct TkWmInfo *wmInfoPtr; /* For top-level windows, points to
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* structure with wm-related info (see
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* tkWm.c). For other windows, this
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* is NULL. */
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} TkWindow;
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/*
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* The context below is used to map from an X window id to
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* the TkWindow structure associated with the window.
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*/
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extern XContext tkWindowContext;
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/*
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* Pointer to first entry in list of all displays currently known.
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*/
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extern TkDisplay *tkDisplayList;
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/*
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* Flags passed to TkMeasureChars:
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*/
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#define TK_WHOLE_WORDS 1
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#define TK_AT_LEAST_ONE 2
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#define TK_PARTIAL_OK 4
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#define TK_NEWLINES_NOT_SPECIAL 8
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/*
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* Location of library directory containing Tk scripts. This value
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* is put in the $tkLibrary variable for each application.
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*/
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#ifndef TK_LIBRARY
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#define TK_LIBRARY "/usr/local/lib/tk"
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#endif
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/*
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* Special flag to pass to Tk_CreateFileHandler to indicate that
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* the file descriptor is actually for a display, not a file, and
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* should be treated specially. Make sure that this value doesn't
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* conflict with TK_READABLE, TK_WRITABLE, or TK_EXCEPTION from tk.h.
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*/
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#define TK_IS_DISPLAY 32
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/*
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* The macro below is used to modify a "char" value (e.g. by casting
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* it to an unsigned character) so that it can be used safely with
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* macros such as isspace.
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*/
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#define UCHAR(c) ((unsigned char) (c))
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/*
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* SPECIAL HACK!!! I've started changing Tk over to use
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* Tcl_PrintDouble instead of sprintf(... %g ...), but the change
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* is not backwards-compatible. So, until the next incompatible
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* release of Tk, the following macro replaces the Tcl_PrintDouble
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* calls with sprintf again.
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*/
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#define Tcl_PrintDouble(interp, value, dst) \
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sprintf(dst, "%g", value)
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/*
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* Miscellaneous variables shared among Tk modules but not exported
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* to the outside world:
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*/
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extern Tk_Uid tkActiveUid;
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extern Tk_Uid tkDisabledUid;
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extern TkMainInfo *tkMainWindowList;
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extern Tk_Uid tkNormalUid;
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/*
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* Internal procedures shared among Tk modules but not exported
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* to the outside world:
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*/
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extern int TkAreaToPolygon _ANSI_ARGS_((double *polyPtr,
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int numPoints, double *rectPtr));
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extern void TkBezierPoints _ANSI_ARGS_((double control[],
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int numSteps, double *coordPtr));
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extern void TkBindEventProc _ANSI_ARGS_((TkWindow *winPtr,
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XEvent *eventPtr));
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extern int TkCopyAndGlobalEval _ANSI_ARGS_((Tcl_Interp *interp,
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char *script));
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extern Time TkCurrentTime _ANSI_ARGS_((TkDisplay *dispPtr));
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extern int TkDeadAppCmd _ANSI_ARGS_((ClientData clientData,
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Tcl_Interp *interp, int argc, char **argv));
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extern void TkDisplayChars _ANSI_ARGS_((Display *display,
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Drawable drawable, GC gc,
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XFontStruct *fontStructPtr, char *string,
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int numChars, int x, int y, int flags));
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extern void TkEventDeadWindow _ANSI_ARGS_((TkWindow *winPtr));
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extern void TkFocusDeadWindow _ANSI_ARGS_((TkWindow *winPtr));
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extern int TkFocusFilterEvent _ANSI_ARGS_((TkWindow *winPtr,
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XEvent *eventPtr));
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extern void TkGetButtPoints _ANSI_ARGS_((double p1[], double p2[],
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double width, int project, double m1[],
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double m2[]));
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extern int TkGetInterpNames _ANSI_ARGS_((Tcl_Interp *interp,
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Tk_Window tkwin));
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extern int TkGetMiterPoints _ANSI_ARGS_((double p1[], double p2[],
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double p3[], double width, double m1[],
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double m2[]));
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extern void TkGrabDeadWindow _ANSI_ARGS_((TkWindow *winPtr));
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extern void TkGrabTriggerProc _ANSI_ARGS_((XEvent *eventPtr));
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extern int TkInitFrame _ANSI_ARGS_((Tcl_Interp *interp,
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Tk_Window tkwin, int toplevel, int argc,
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char *argv[]));
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extern int TkLineToArea _ANSI_ARGS_((double end1Ptr[2],
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double end2Ptr[2], double rectPtr[4]));
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extern double TkLineToPoint _ANSI_ARGS_((double end1Ptr[2],
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double end2Ptr[2], double pointPtr[2]));
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extern void TkMakeBezierPostscript _ANSI_ARGS_((Tcl_Interp *interp,
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double *pointPtr, int numPoints,
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Tk_PostscriptInfo *psInfoPtr));
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extern int TkMeasureChars _ANSI_ARGS_((XFontStruct *fontStructPtr,
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char *source, int maxChars, int startX, int maxX,
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int flags, int *nextXPtr));
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extern void TkOptionDeadWindow _ANSI_ARGS_((TkWindow *winPtr));
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extern int TkOvalToArea _ANSI_ARGS_((double *ovalPtr,
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double *rectPtr));
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extern double TkOvalToPoint _ANSI_ARGS_((double ovalPtr[4],
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double width, int filled, double pointPtr[2]));
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extern int TkPointerEvent _ANSI_ARGS_((XEvent *eventPtr,
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TkWindow *winPtr));
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extern int TkPolygonToArea _ANSI_ARGS_((double *polyPtr,
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int numPoints, double *rectPtr));
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extern double TkPolygonToPoint _ANSI_ARGS_((double *polyPtr,
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int numPoints, double *pointPtr));
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extern void TkQueueEvent _ANSI_ARGS_((TkDisplay *dispPtr,
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XEvent *eventPtr));
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extern void TkSelDeadWindow _ANSI_ARGS_((TkWindow *winPtr));
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extern void TkSelEventProc _ANSI_ARGS_((Tk_Window tkwin,
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XEvent *eventPtr));
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extern void TkSelPropProc _ANSI_ARGS_((XEvent *eventPtr));
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extern void TkUnderlineChars _ANSI_ARGS_((Display *display,
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Drawable drawable, GC gc,
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XFontStruct *fontStructPtr, char *string,
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int x, int y, int flags, int firstChar,
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int lastChar));
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extern void TkWmDeadWindow _ANSI_ARGS_((TkWindow *winPtr));
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extern void TkWmMapWindow _ANSI_ARGS_((TkWindow *winPtr));
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extern void TkWmNewWindow _ANSI_ARGS_((TkWindow *winPtr));
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extern void TkWmProtocolEventProc _ANSI_ARGS_((TkWindow *winPtr,
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XEvent *evenvPtr));
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extern void TkWmRestackToplevel _ANSI_ARGS_((TkWindow *winPtr,
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int aboveBelow, TkWindow *otherPtr));
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extern void TkWmSetClass _ANSI_ARGS_((TkWindow *winPtr));
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extern void TkWmUnmapWindow _ANSI_ARGS_((TkWindow *winPtr));
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#endif /* _TKINT */
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