/[dtapublic]/projs/dtats/trunk/shared_source/c_tk_base_7_5_w_mods/tkframe.c

Diff of /projs/dtats/trunk/shared_source/c_tk_base_7_5_w_mods/tkframe.c

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-revision 69 by dashley,
Sat Nov  5 10:54:17 2016 UTC
+revision 71 by dashley,
Sat Nov  5 11:07:06 2016 UTC
 Line 1
  /* $Header$ */
  /*
   * tkFrame.c --
   *
   *      This module implements "frame"  and "toplevel" widgets for
   *      the Tk toolkit.  Frames are windows with a background color
   *      and possibly a 3-D effect, but not much else in the way of
   *      attributes.
   *
   * Copyright (c) 1990-1994 The Regents of the University of California.
   * Copyright (c) 1994-1997 Sun Microsystems, Inc.
   *
   * See the file "license.terms" for information on usage and redistribution
   * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
   *
   * RCS: @(#) $Id: tkframe.c,v 1.1.1.1 2001/06/13 05:01:10 dtashley Exp $
   */
  #include "default.h"
  #include "tkPort.h"
  #include "tkInt.h"
  /*
   * A data structure of the following type is kept for each
   * frame that currently exists for this process:
   */
  typedef struct {
      Tk_Window tkwin;            /* Window that embodies the frame.  NULL
                                   * means that the window has been destroyed
                                   * but the data structures haven't yet been
                                   * cleaned up. */
      Display *display;           /* Display containing widget.  Used, among
                                   * other things, so that resources can be
                                   * freed even after tkwin has gone away. */
      Tcl_Interp *interp;         /* Interpreter associated with widget.  Used
                                   * to delete widget command. */
      Tcl_Command widgetCmd;      /* Token for frame's widget command. */
      char *className;            /* Class name for widget (from configuration
                                   * option).  Malloc-ed. */
      int mask;                   /* Either FRAME or TOPLEVEL;  used to select
                                   * which configuration options are valid for
                                   * widget. */
      char *screenName;           /* Screen on which widget is created.  Non-null
                                   * only for top-levels.  Malloc-ed, may be
                                   * NULL. */
      char *visualName;           /* Textual description of visual for window,
                                   * from -visual option.  Malloc-ed, may be
                                   * NULL. */
      char *colormapName;         /* Textual description of colormap for window,
                                   * from -colormap option.  Malloc-ed, may be
                                   * NULL. */
      char *menuName;             /* Textual description of menu to use for
                                   * menubar. Malloc-ed, may be NULL. */
      Colormap colormap;          /* If not None, identifies a colormap
                                   * allocated for this window, which must be
                                   * freed when the window is deleted. */
      Tk_3DBorder border;         /* Structure used to draw 3-D border and
                                   * background.  NULL means no background
                                   * or border. */
      int borderWidth;            /* Width of 3-D border (if any). */
      int relief;                 /* 3-d effect: TK_RELIEF_RAISED etc. */
      int highlightWidth;         /* Width in pixels of highlight to draw
                                   * around widget when it has the focus.
                                   * 0 means don't draw a highlight. */
      XColor *highlightBgColorPtr;
                                  /* Color for drawing traversal highlight
                                   * area when highlight is off. */
      XColor *highlightColorPtr;  /* Color for drawing traversal highlight. */
      int width;                  /* Width to request for window.  <= 0 means
                                   * don't request any size. */
      int height;                 /* Height to request for window.  <= 0 means
                                   * don't request any size. */
      Tk_Cursor cursor;           /* Current cursor for window, or None. */
      char *takeFocus;            /* Value of -takefocus option;  not used in
                                   * the C code, but used by keyboard traversal
                                   * scripts.  Malloc'ed, but may be NULL. */
      int isContainer;            /* 1 means this window is a container, 0 means
                                   * that it isn't. */
      char *useThis;              /* If the window is embedded, this points to
                                   * the name of the window in which it is
                                   * embedded (malloc'ed).  For non-embedded
                                   * windows this is NULL. */
      int flags;                  /* Various flags;  see below for
                                   * definitions. */
  } Frame;
  /*
   * Flag bits for frames:
   *
   * REDRAW_PENDING:              Non-zero means a DoWhenIdle handler
   *                              has already been queued to redraw
   *                              this window.
   * GOT_FOCUS:                   Non-zero means this widget currently
   *                              has the input focus.
   */
  #define REDRAW_PENDING          1
  #define GOT_FOCUS               4
  /*
   * The following flag bits are used so that there can be separate
   * defaults for some configuration options for frames and toplevels.
   */
  #define FRAME           TK_CONFIG_USER_BIT
  #define TOPLEVEL        (TK_CONFIG_USER_BIT << 1)
  #define BOTH            (FRAME | TOPLEVEL)
  static Tk_ConfigSpec configSpecs[] = {
      {TK_CONFIG_BORDER, "-background", "background", "Background",
          DEF_FRAME_BG_COLOR, Tk_Offset(Frame, border),
          BOTH|TK_CONFIG_COLOR_ONLY|TK_CONFIG_NULL_OK},
      {TK_CONFIG_BORDER, "-background", "background", "Background",
          DEF_FRAME_BG_MONO, Tk_Offset(Frame, border),
          BOTH|TK_CONFIG_MONO_ONLY|TK_CONFIG_NULL_OK},
      {TK_CONFIG_SYNONYM, "-bd", "borderWidth", (char *) NULL,
          (char *) NULL, 0, BOTH},
      {TK_CONFIG_SYNONYM, "-bg", "background", (char *) NULL,
          (char *) NULL, 0, BOTH},
      {TK_CONFIG_PIXELS, "-borderwidth", "borderWidth", "BorderWidth",
          DEF_FRAME_BORDER_WIDTH, Tk_Offset(Frame, borderWidth), BOTH},
      {TK_CONFIG_STRING, "-class", "class", "Class",
          DEF_FRAME_CLASS, Tk_Offset(Frame, className), FRAME},
      {TK_CONFIG_STRING, "-class", "class", "Class",
          DEF_TOPLEVEL_CLASS, Tk_Offset(Frame, className), TOPLEVEL},
      {TK_CONFIG_STRING, "-colormap", "colormap", "Colormap",
          DEF_FRAME_COLORMAP, Tk_Offset(Frame, colormapName),
          BOTH|TK_CONFIG_NULL_OK},
      {TK_CONFIG_BOOLEAN, "-container", "container", "Container",
          DEF_FRAME_CONTAINER, Tk_Offset(Frame, isContainer), BOTH},
      {TK_CONFIG_ACTIVE_CURSOR, "-cursor", "cursor", "Cursor",
          DEF_FRAME_CURSOR, Tk_Offset(Frame, cursor), BOTH|TK_CONFIG_NULL_OK},
      {TK_CONFIG_PIXELS, "-height", "height", "Height",
          DEF_FRAME_HEIGHT, Tk_Offset(Frame, height), BOTH},
      {TK_CONFIG_COLOR, "-highlightbackground", "highlightBackground",
          "HighlightBackground", DEF_FRAME_HIGHLIGHT_BG,
          Tk_Offset(Frame, highlightBgColorPtr), BOTH},
      {TK_CONFIG_COLOR, "-highlightcolor", "highlightColor", "HighlightColor",
          DEF_FRAME_HIGHLIGHT, Tk_Offset(Frame, highlightColorPtr), BOTH},
      {TK_CONFIG_PIXELS, "-highlightthickness", "highlightThickness",
          "HighlightThickness",
          DEF_FRAME_HIGHLIGHT_WIDTH, Tk_Offset(Frame, highlightWidth), BOTH},
      {TK_CONFIG_STRING, "-menu", "menu", "Menu",
          DEF_TOPLEVEL_MENU, Tk_Offset(Frame, menuName),
          TOPLEVEL|TK_CONFIG_NULL_OK},
      {TK_CONFIG_RELIEF, "-relief", "relief", "Relief",
          DEF_FRAME_RELIEF, Tk_Offset(Frame, relief), BOTH},
      {TK_CONFIG_STRING, "-screen", "screen", "Screen",
          DEF_TOPLEVEL_SCREEN, Tk_Offset(Frame, screenName),
          TOPLEVEL|TK_CONFIG_NULL_OK},
      {TK_CONFIG_STRING, "-takefocus", "takeFocus", "TakeFocus",
          DEF_FRAME_TAKE_FOCUS, Tk_Offset(Frame, takeFocus),
          BOTH|TK_CONFIG_NULL_OK},
      {TK_CONFIG_STRING, "-use", "use", "Use",
          DEF_FRAME_USE, Tk_Offset(Frame, useThis), TOPLEVEL|TK_CONFIG_NULL_OK},
      {TK_CONFIG_STRING, "-visual", "visual", "Visual",
          DEF_FRAME_VISUAL, Tk_Offset(Frame, visualName),
          BOTH|TK_CONFIG_NULL_OK},
      {TK_CONFIG_PIXELS, "-width", "width", "Width",
          DEF_FRAME_WIDTH, Tk_Offset(Frame, width), BOTH},
      {TK_CONFIG_END, (char *) NULL, (char *) NULL, (char *) NULL,
          (char *) NULL, 0, 0}
  };
  /*
   * Forward declarations for procedures defined later in this file:
   */
  static int              ConfigureFrame _ANSI_ARGS_((Tcl_Interp *interp,
                              Frame *framePtr, int objc, Tcl_Obj *CONST objv[],
                              int flags));
  static int              CreateFrame _ANSI_ARGS_((ClientData clientData,
                              Tcl_Interp *interp, int objc, Tcl_Obj *CONST argv[],
                              int toplevel, char *appName));
  static void             DestroyFrame _ANSI_ARGS_((char *memPtr));
  static void             DisplayFrame _ANSI_ARGS_((ClientData clientData));
  static void             FrameCmdDeletedProc _ANSI_ARGS_((
                              ClientData clientData));
  static void             FrameEventProc _ANSI_ARGS_((ClientData clientData,
                              XEvent *eventPtr));
  static int              FrameWidgetObjCmd _ANSI_ARGS_((ClientData clientData,
                              Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
  static void             MapFrame _ANSI_ARGS_((ClientData clientData));
  /*
   *--------------------------------------------------------------
   *
   * Tk_FrameObjCmd, Tk_ToplevelObjCmd --
   *
   *      These procedures are invoked to process the "frame" and
   *      "toplevel" Tcl commands.  See the user documentation for
   *      details on what they do.
   *
   * Results:
   *      A standard Tcl result.
   *
   * Side effects:
   *      See the user documentation.  These procedures are just wrappers;
   *      they call ButtonCreate to do all of the real work.
   *
   *--------------------------------------------------------------
   */
  int
  Tk_FrameObjCmd(clientData, interp, objc, objv)
      ClientData clientData;      /* Main window associated with
                                   * interpreter. */
      Tcl_Interp *interp;         /* Current interpreter. */
      int objc;                   /* Number of arguments. */
      Tcl_Obj *CONST objv[];      /* Argument objects. */
  {
      return CreateFrame(clientData, interp, objc, objv, 0, (char *) NULL);
  }
  int
  Tk_ToplevelObjCmd(clientData, interp, objc, objv)
      ClientData clientData;      /* Main window associated with
                                   * interpreter. */
      Tcl_Interp *interp;         /* Current interpreter. */
      int objc;                   /* Number of arguments. */
      Tcl_Obj *CONST objv[];      /* Argument objects. */
  {
      return CreateFrame(clientData, interp, objc, objv, 1, (char *) NULL);
  }
  /*
   *--------------------------------------------------------------
   *
   * TkCreateFrame --
   *
   *      This procedure is invoked to process the "frame" and "toplevel"
   *      Tcl commands;  it is also invoked directly by Tk_Init to create
   *      a new main window.  See the user documentation for the "frame"
   *      and "toplevel" commands for details on what it does.
   *
   * Results:
   *      A standard Tcl result.
   *
   * Side effects:
   *      See the user documentation.
   *
   *--------------------------------------------------------------
   */
  int
  TkCreateFrame(clientData, interp, argc, argv, toplevel, appName)
      ClientData clientData;      /* Main window associated with interpreter.
                                   * If we're called by Tk_Init to create a
                                   * new application, then this is NULL. */
      Tcl_Interp *interp;         /* Current interpreter. */
      int argc;                   /* Number of arguments. */
      char **argv;                /* Argument strings. */
      int toplevel;               /* Non-zero means create a toplevel window,
                                   * zero means create a frame. */
      char *appName;              /* Should only be non-NULL if clientData is
                                   * NULL:  gives the base name to use for the
                                   * new application. */
  {
      int result, i;
      Tcl_Obj **objv = (Tcl_Obj **) ckalloc((argc+1) * sizeof(Tcl_Obj **));
      for (i=0; i<argc; i++) {
          objv[i] = Tcl_NewStringObj(argv[i], -1);
          Tcl_IncrRefCount(objv[i]);
      }
      objv[argc] = NULL;
      result = CreateFrame(clientData, interp, argc, objv, toplevel, appName);
      for (i=0; i<argc; i++) {
          Tcl_DecrRefCount(objv[i]);
      }
      ckfree((char *) objv);
      return result;
  }
  static int
  CreateFrame(clientData, interp, objc, objv, toplevel, appName)
      ClientData clientData;      /* Main window associated with interpreter.
                                   * If we're called by Tk_Init to create a
                                   * new application, then this is NULL. */
      Tcl_Interp *interp;         /* Current interpreter. */
      int objc;                   /* Number of arguments. */
      Tcl_Obj *CONST objv[];      /* Argument objects. */
      int toplevel;               /* Non-zero means create a toplevel window,
                                   * zero means create a frame. */
      char *appName;              /* Should only be non-NULL if clientData is
                                   * NULL:  gives the base name to use for the
                                   * new application. */
  {
      Tk_Window tkwin = (Tk_Window) clientData;
      Frame *framePtr;
      Tk_Window new;
      char *className, *screenName, *visualName, *colormapName, *arg, *useOption;
      int i, c, depth;
      size_t length;
      unsigned int mask;
      Colormap colormap;
      Visual *visual;
      if (objc < 2) {
          Tcl_WrongNumArgs(interp, 1, objv, "pathName ?options?");
          return TCL_ERROR;
      }
      /*
       * Pre-process the argument list.  Scan through it to find any
       * "-class", "-screen", "-visual", and "-colormap" options.  These
       * arguments need to be processed specially, before the window
       * is configured using the usual Tk mechanisms.
       */
      className = colormapName = screenName = visualName = useOption = NULL;
      colormap = None;
      for (i = 2; i < objc; i += 2) {
          arg = Tcl_GetStringFromObj(objv[i], (int *) &length);
          if (length < 2) {
              continue;
          }
          c = arg[1];
          if ((c == 'c') && (strncmp(arg, "-class", length) == 0)
                  && (length >= 3)) {
              className = Tcl_GetString(objv[i+1]);
          } else if ((c == 'c')
                  && (strncmp(arg, "-colormap", length) == 0)) {
              colormapName = Tcl_GetString(objv[i+1]);
          } else if ((c == 's') && toplevel
                  && (strncmp(arg, "-screen", length) == 0)) {
              screenName = Tcl_GetString(objv[i+1]);
          } else if ((c == 'u') && toplevel
                  && (strncmp(arg, "-use", length) == 0)) {
              useOption = Tcl_GetString(objv[i+1]);
          } else if ((c == 'v')
                  && (strncmp(arg, "-visual", length) == 0)) {
              visualName = Tcl_GetString(objv[i+1]);
          }
      }
      /*
       * Create the window, and deal with the special options -use,
       * -classname, -colormap, -screenname, and -visual.  These options
       * must be handle before calling ConfigureFrame below, and they must
       * also be processed in a particular order, for the following
       * reasons:
       * 1. Must set the window's class before calling ConfigureFrame,
       *    so that unspecified options are looked up in the option
       *    database using the correct class.
       * 2. Must set visual information before calling ConfigureFrame
       *    so that colors are allocated in a proper colormap.
       * 3. Must call TkpUseWindow before setting non-default visual
       *    information, since TkpUseWindow changes the defaults.
       */
      if (screenName == NULL) {
          screenName = (toplevel) ? "" : NULL;
      }
      if (tkwin != NULL) {
          new = Tk_CreateWindowFromPath(interp, tkwin, Tcl_GetString(objv[1]),
                  screenName);
      } else {
          /*
           * We were called from Tk_Init;  create a new application.
           */
          if (appName == NULL) {
              panic("TkCreateFrame didn't get application name");
          }
          new = TkCreateMainWindow(interp, screenName, appName);
      }
      if (new == NULL) {
          goto error;
      }
      if (className == NULL) {
          className = Tk_GetOption(new, "class", "Class");
          if (className == NULL) {
              className = (toplevel) ? "Toplevel" : "Frame";
          }
      }
      Tk_SetClass(new, className);
      if (useOption == NULL) {
          useOption = Tk_GetOption(new, "use", "Use");
      }
      if (useOption != NULL) {
          if (TkpUseWindow(interp, new, useOption) != TCL_OK) {
              goto error;
          }
      }
      if (visualName == NULL) {
          visualName = Tk_GetOption(new, "visual", "Visual");
      }
      if (colormapName == NULL) {
          colormapName = Tk_GetOption(new, "colormap", "Colormap");
      }
      if (visualName != NULL) {
          visual = Tk_GetVisual(interp, new, visualName, &depth,
                  (colormapName == NULL) ? &colormap : (Colormap *) NULL);
          if (visual == NULL) {
              goto error;
          }
          Tk_SetWindowVisual(new, visual, depth, colormap);
      }
      if (colormapName != NULL) {
          colormap = Tk_GetColormap(interp, new, colormapName);
          if (colormap == None) {
              goto error;
          }
          Tk_SetWindowColormap(new, colormap);
      }
      /*
       * For top-level windows, provide an initial geometry request of
       * 200x200,  just so the window looks nicer on the screen if it
       * doesn't request a size for itself.
       */
      if (toplevel) {
          Tk_GeometryRequest(new, 200, 200);
      }
      /*
       * Create the widget record, process configuration options, and
       * create event handlers.  Then fill in a few additional fields
       * in the widget record from the special options.
       */
      framePtr = (Frame *) ckalloc(sizeof(Frame));
      framePtr->tkwin = new;
      framePtr->display = Tk_Display(new);
      framePtr->interp = interp;
      framePtr->widgetCmd = Tcl_CreateObjCommand(interp,
              Tk_PathName(new), FrameWidgetObjCmd,
              (ClientData) framePtr, FrameCmdDeletedProc);
      framePtr->className = NULL;
      framePtr->mask = (toplevel) ? TOPLEVEL : FRAME;
      framePtr->screenName = NULL;
      framePtr->visualName = NULL;
      framePtr->colormapName = NULL;
      framePtr->colormap = colormap;
      framePtr->border = NULL;
      framePtr->borderWidth = 0;
      framePtr->relief = TK_RELIEF_FLAT;
      framePtr->highlightWidth = 0;
      framePtr->highlightBgColorPtr = NULL;
      framePtr->highlightColorPtr = NULL;
      framePtr->width = 0;
      framePtr->height = 0;
      framePtr->cursor = None;
      framePtr->takeFocus = NULL;
      framePtr->isContainer = 0;
      framePtr->useThis = NULL;
      framePtr->flags = 0;
      framePtr->menuName = NULL;
      /*
       * Store backreference to frame widget in window structure.
       */
      TkSetClassProcs(new, NULL, (ClientData) framePtr);
      mask = ExposureMask | StructureNotifyMask | FocusChangeMask;
      if (toplevel) {
          mask |= ActivateMask;
      }
      Tk_CreateEventHandler(new, mask, FrameEventProc, (ClientData) framePtr);
      if (ConfigureFrame(interp, framePtr, objc-2, objv+2, 0) != TCL_OK) {
          goto error;
      }
      if ((framePtr->isContainer)) {
          if (framePtr->useThis == NULL) {
              TkpMakeContainer(framePtr->tkwin);
          } else {
              Tcl_AppendResult(interp,"A window cannot have both the -use ",
                      "and the -container option set.");
              return TCL_ERROR;
          }
      }
      if (toplevel) {
          Tcl_DoWhenIdle(MapFrame, (ClientData) framePtr);
      }
      Tcl_SetResult(interp, Tk_PathName(new), TCL_STATIC);
      return TCL_OK;
      error:
      if (new != NULL) {
          Tk_DestroyWindow(new);
      }
      return TCL_ERROR;
  }
  /*
   *--------------------------------------------------------------
   *
   * FrameWidgetObjCmd --
   *
   *      This procedure is invoked to process the Tcl command
   *      that corresponds to a frame widget.  See the user
   *      documentation for details on what it does.
   *
   * Results:
   *      A standard Tcl result.
   *
   * Side effects:
   *      See the user documentation.
   *
   *--------------------------------------------------------------
   */
  static int
  FrameWidgetObjCmd(clientData, interp, objc, objv)
      ClientData clientData;      /* Information about frame widget. */
      Tcl_Interp *interp;         /* Current interpreter. */
      int objc;                   /* Number of arguments. */
      Tcl_Obj *CONST objv[];      /* Argument objects. */
  {
      static char *frameOptions[] = {
          "cget", "configure", (char *) NULL
      };
      enum options {
          FRAME_CGET, FRAME_CONFIGURE
      };
      register Frame *framePtr = (Frame *) clientData;
      int result = TCL_OK, index;
      size_t length;
      int c, i;
      if (objc < 2) {
          Tcl_WrongNumArgs(interp, 1, objv, "option ?arg arg ...?");
          return TCL_ERROR;
      }
      if (Tcl_GetIndexFromObj(interp, objv[1], frameOptions, "option", 0,
              &index) != TCL_OK) {
          return TCL_ERROR;
      }
      Tcl_Preserve((ClientData) framePtr);
      switch ((enum options) index) {
        case FRAME_CGET: {
          if (objc != 3) {
              Tcl_WrongNumArgs(interp, 2, objv, "option");
              result = TCL_ERROR;
              goto done;
          }
          result = Tk_ConfigureValue(interp, framePtr->tkwin, configSpecs,
                  (char *) framePtr, Tcl_GetString(objv[2]), framePtr->mask);
          break;
        }
        case FRAME_CONFIGURE: {
          if (objc == 2) {
              result = Tk_ConfigureInfo(interp, framePtr->tkwin, configSpecs,
                      (char *) framePtr, (char *) NULL, framePtr->mask);
          } else if (objc == 3) {
              result = Tk_ConfigureInfo(interp, framePtr->tkwin, configSpecs,
                      (char *) framePtr, Tcl_GetString(objv[2]), framePtr->mask);
          } else {
              /*
               * Don't allow the options -class, -colormap, -container,
               * -newcmap, -screen, -use, or -visual to be changed.
               */
              for (i = 2; i < objc; i++) {
                  char *arg = Tcl_GetStringFromObj(objv[i], (int *) &length);
                  if (length < 2) {
                      continue;
                  }
                  c = arg[1];
                  if (((c == 'c') && (strncmp(arg, "-class", length) == 0)
                          && (length >= 2))
                          || ((c == 'c') && (framePtr->mask == TOPLEVEL)
                          && (strncmp(arg, "-colormap", length) == 0)
                          && (length >= 3))
                          || ((c == 'c')
                          && (strncmp(arg, "-container", length) == 0)
                          && (length >= 3))
                          || ((c == 's') && (framePtr->mask == TOPLEVEL)
                          && (strncmp(arg, "-screen", length) == 0))
                          || ((c == 'u') && (framePtr->mask == TOPLEVEL)
                          && (strncmp(arg, "-use", length) == 0))
                          || ((c == 'v') && (framePtr->mask == TOPLEVEL)
                          && (strncmp(arg, "-visual", length) == 0))) {
                      Tcl_AppendResult(interp, "can't modify ", arg,
                              " option after widget is created", (char *) NULL);
                      result = TCL_ERROR;
                      goto done;
                  }
              }
              result = ConfigureFrame(interp, framePtr, objc-2, objv+2,
                      TK_CONFIG_ARGV_ONLY);
          }
          break;
        }
      }
      done:
      Tcl_Release((ClientData) framePtr);
      return result;
  }
  /*
   *----------------------------------------------------------------------
   *
   * DestroyFrame --
   *
   *      This procedure is invoked by Tcl_EventuallyFree or Tcl_Release
   *      to clean up the internal structure of a frame at a safe time
   *      (when no-one is using it anymore).
   *
   * Results:
   *      None.
   *
   * Side effects:
   *      Everything associated with the frame is freed up.
   *
   *----------------------------------------------------------------------
   */
  static void
  DestroyFrame(memPtr)
      char *memPtr;               /* Info about frame widget. */
  {
      register Frame *framePtr = (Frame *) memPtr;
      Tk_FreeOptions(configSpecs, (char *) framePtr, framePtr->display,
              framePtr->mask);
      if (framePtr->colormap != None) {
          Tk_FreeColormap(framePtr->display, framePtr->colormap);
      }
      ckfree((char *) framePtr);
  }
  /*
   *----------------------------------------------------------------------
   *
   * ConfigureFrame --
   *
   *      This procedure is called to process an objv/objc list, plus
   *      the Tk option database, in order to configure (or
   *      reconfigure) a frame widget.
   *
   * Results:
   *      The return value is a standard Tcl result.  If TCL_ERROR is
   *      returned, then the interp's result contains an error message.
   *
   * Side effects:
   *      Configuration information, such as text string, colors, font,
   *      etc. get set for framePtr;  old resources get freed, if there
   *      were any.
   *
   *----------------------------------------------------------------------
   */
  static int
  ConfigureFrame(interp, framePtr, objc, objv, flags)
      Tcl_Interp *interp;         /* Used for error reporting. */
      register Frame *framePtr;   /* Information about widget;  may or may
                                   * not already have values for some fields. */
      int objc;                   /* Number of valid entries in objv. */
      Tcl_Obj *CONST objv[];      /* Arguments. */
      int flags;                  /* Flags to pass to Tk_ConfigureWidget. */
  {
      char *oldMenuName;
      /*
       * Need the old menubar name for the menu code to delete it.
       */
      if (framePtr->menuName == NULL) {
          oldMenuName = NULL;
      } else {
          oldMenuName = ckalloc(strlen(framePtr->menuName) + 1);
          strcpy(oldMenuName, framePtr->menuName);
      }
      if (Tk_ConfigureWidget(interp, framePtr->tkwin, configSpecs,
              objc, (char **) objv, (char *) framePtr,
              flags | framePtr->mask | TK_CONFIG_OBJS) != TCL_OK) {
          return TCL_ERROR;
      }
      if (((oldMenuName == NULL) && (framePtr->menuName != NULL))
              || ((oldMenuName != NULL) && (framePtr->menuName == NULL))
              || ((oldMenuName != NULL) && (framePtr->menuName != NULL)
              && strcmp(oldMenuName, framePtr->menuName) != 0)) {
          TkSetWindowMenuBar(interp, framePtr->tkwin, oldMenuName,
                  framePtr->menuName);
      }
      if (framePtr->border != NULL) {
          Tk_SetBackgroundFromBorder(framePtr->tkwin, framePtr->border);
      } else {
          Tk_SetWindowBackgroundPixmap(framePtr->tkwin, None);
      }
      if (framePtr->highlightWidth < 0) {
          framePtr->highlightWidth = 0;
      }
      Tk_SetInternalBorder(framePtr->tkwin,
              framePtr->borderWidth + framePtr->highlightWidth);
      if ((framePtr->width > 0) || (framePtr->height > 0)) {
          Tk_GeometryRequest(framePtr->tkwin, framePtr->width,
                  framePtr->height);
      }
      if (oldMenuName != NULL) {
          ckfree(oldMenuName);
      }
      if (Tk_IsMapped(framePtr->tkwin)) {
          if (!(framePtr->flags & REDRAW_PENDING)) {
              Tcl_DoWhenIdle(DisplayFrame, (ClientData) framePtr);
          }
          framePtr->flags |= REDRAW_PENDING;
      }
      return TCL_OK;
  }
  /*
   *----------------------------------------------------------------------
   *
   * DisplayFrame --
   *
   *      This procedure is invoked to display a frame widget.
   *
   * Results:
   *      None.
   *
   * Side effects:
   *      Commands are output to X to display the frame in its
   *      current mode.
   *
   *----------------------------------------------------------------------
   */
  static void
  DisplayFrame(clientData)
      ClientData clientData;      /* Information about widget. */
  {
      register Frame *framePtr = (Frame *) clientData;
      register Tk_Window tkwin = framePtr->tkwin;
      void (* drawFunction) _ANSI_ARGS_((Tk_Window, Drawable, Tk_3DBorder,
              int, int, int, int, int, int)) = Tk_Fill3DRectangle;
      framePtr->flags &= ~REDRAW_PENDING;
      if ((framePtr->tkwin == NULL) || !Tk_IsMapped(tkwin)
          || framePtr->isContainer) {
          return;
      }
      if (framePtr->border != NULL) {
          drawFunction(tkwin, Tk_WindowId(tkwin),
                  framePtr->border, framePtr->highlightWidth,
                  framePtr->highlightWidth,
                  Tk_Width(tkwin) - 2*framePtr->highlightWidth,
                  Tk_Height(tkwin) - 2*framePtr->highlightWidth,
                  framePtr->borderWidth, framePtr->relief);
      }
      if (framePtr->highlightWidth != 0) {
          GC fgGC, bgGC;
          bgGC = Tk_GCForColor(framePtr->highlightBgColorPtr,
                  Tk_WindowId(tkwin));
          if (framePtr->flags & GOT_FOCUS) {
              fgGC = Tk_GCForColor(framePtr->highlightColorPtr,
                      Tk_WindowId(tkwin));
              TkpDrawHighlightBorder(tkwin, fgGC, bgGC, framePtr->highlightWidth,
                      Tk_WindowId(tkwin));
          } else {
              TkpDrawHighlightBorder(tkwin, bgGC, bgGC, framePtr->highlightWidth,
                      Tk_WindowId(tkwin));
          }
      }
  }
  /*
   *--------------------------------------------------------------
   *
   * FrameEventProc --
   *
   *      This procedure is invoked by the Tk dispatcher on
   *      structure changes to a frame.  For frames with 3D
   *      borders, this procedure is also invoked for exposures.
   *
   * Results:
   *      None.
   *
   * Side effects:
   *      When the window gets deleted, internal structures get
   *      cleaned up.  When it gets exposed, it is redisplayed.
   *
   *--------------------------------------------------------------
   */
  static void
  FrameEventProc(clientData, eventPtr)
      ClientData clientData;      /* Information about window. */
      register XEvent *eventPtr;  /* Information about event. */
  {
      register Frame *framePtr = (Frame *) clientData;
      if (((eventPtr->type == Expose) && (eventPtr->xexpose.count == 0))
              || (eventPtr->type == ConfigureNotify)) {
          goto redraw;
      } else if (eventPtr->type == DestroyNotify) {
          if (framePtr->menuName != NULL) {
              TkSetWindowMenuBar(framePtr->interp, framePtr->tkwin,
                      framePtr->menuName, NULL);
              ckfree(framePtr->menuName);
              framePtr->menuName = NULL;
          }
          if (framePtr->tkwin != NULL) {
              /*
               * If this window is a container, then this event could be
               * coming from the embedded application, in which case
               * Tk_DestroyWindow hasn't been called yet.  When Tk_DestroyWindow
               * is called later, then another destroy event will be generated.
               * We need to be sure we ignore the second event, since the frame
               * could be gone by then.  To do so, delete the event handler
               * explicitly (normally it's done implicitly by Tk_DestroyWindow).
               */
              Tk_DeleteEventHandler(framePtr->tkwin,
                      ExposureMask|StructureNotifyMask|FocusChangeMask,
                      FrameEventProc, (ClientData) framePtr);
              framePtr->tkwin = NULL;
              Tcl_DeleteCommandFromToken(framePtr->interp, framePtr->widgetCmd);
          }
          if (framePtr->flags & REDRAW_PENDING) {
              Tcl_CancelIdleCall(DisplayFrame, (ClientData) framePtr);
          }
          Tcl_CancelIdleCall(MapFrame, (ClientData) framePtr);
          Tcl_EventuallyFree((ClientData) framePtr, DestroyFrame);
      } else if (eventPtr->type == FocusIn) {
          if (eventPtr->xfocus.detail != NotifyInferior) {
              framePtr->flags |= GOT_FOCUS;
              if (framePtr->highlightWidth > 0) {
                  goto redraw;
              }
          }
      } else if (eventPtr->type == FocusOut) {
          if (eventPtr->xfocus.detail != NotifyInferior) {
              framePtr->flags &= ~GOT_FOCUS;
              if (framePtr->highlightWidth > 0) {
                  goto redraw;
              }
          }
      } else if (eventPtr->type == ActivateNotify) {
          TkpSetMainMenubar(framePtr->interp, framePtr->tkwin,
                  framePtr->menuName);
      }
      return;
      redraw:
      if ((framePtr->tkwin != NULL) && !(framePtr->flags & REDRAW_PENDING)) {
          Tcl_DoWhenIdle(DisplayFrame, (ClientData) framePtr);
          framePtr->flags |= REDRAW_PENDING;
      }
  }
  /*
   *----------------------------------------------------------------------
   *
   * FrameCmdDeletedProc --
   *
   *      This procedure is invoked when a widget command is deleted.  If
   *      the widget isn't already in the process of being destroyed,
   *      this command destroys it.
   *
   * Results:
   *      None.
   *
   * Side effects:
   *      The widget is destroyed.
   *
   *----------------------------------------------------------------------
   */
  static void
  FrameCmdDeletedProc(clientData)
      ClientData clientData;      /* Pointer to widget record for widget. */
  {
      Frame *framePtr = (Frame *) clientData;
      Tk_Window tkwin = framePtr->tkwin;
      if (framePtr->menuName != NULL) {
          TkSetWindowMenuBar(framePtr->interp, framePtr->tkwin,
                  framePtr->menuName, NULL);
          ckfree(framePtr->menuName);
          framePtr->menuName = NULL;
      }
      /*
       * This procedure could be invoked either because the window was
       * destroyed and the command was then deleted (in which case tkwin
       * is NULL) or because the command was deleted, and then this procedure
       * destroys the widget.
       */
      if (tkwin != NULL) {
          framePtr->tkwin = NULL;
          Tk_DestroyWindow(tkwin);
      }
  }
  /*
   *----------------------------------------------------------------------
   *
   * MapFrame --
   *
   *      This procedure is invoked as a when-idle handler to map a
   *      newly-created top-level frame.
   *
   * Results:
   *      None.
   *
   * Side effects:
   *      The frame given by the clientData argument is mapped.
   *
   *----------------------------------------------------------------------
   */
  static void
  MapFrame(clientData)
      ClientData clientData;              /* Pointer to frame structure. */
  {
      Frame *framePtr = (Frame *) clientData;
      /*
       * Wait for all other background events to be processed before
       * mapping window.  This ensures that the window's correct geometry
       * will have been determined before it is first mapped, so that the
       * window manager doesn't get a false idea of its desired geometry.
       */
      Tcl_Preserve((ClientData) framePtr);
      while (1) {
          if (Tcl_DoOneEvent(TCL_IDLE_EVENTS) == 0) {
              break;
          }
          /*
           * After each event, make sure that the window still exists
           * and quit if the window has been destroyed.
           */
          if (framePtr->tkwin == NULL) {
              Tcl_Release((ClientData) framePtr);
              return;
          }
      }
      Tk_MapWindow(framePtr->tkwin);
      Tcl_Release((ClientData) framePtr);
  }
  /*
   *--------------------------------------------------------------
   *
   * TkInstallFrameMenu --
   *
   *      This function is needed when a Windows HWND is created
   *      and a menubar has been set to the window with a system
   *      menu. It notifies the menu package so that the system
   *      menu can be rebuilt.
   *
   * Results:
   *      None.
   *
   * Side effects:
   *      The system menu (if any) is created for the menubar
   *      associated with this frame.
   *
   *--------------------------------------------------------------
   */
  void
  TkInstallFrameMenu(tkwin)
      Tk_Window tkwin;            /* The window that was just created. */
  {
      TkWindow *winPtr = (TkWindow *) tkwin;
      if (winPtr->mainPtr != NULL) {
          Frame *framePtr;
          framePtr = (Frame*) winPtr->instanceData;
          if (framePtr == NULL) {
              panic("TkInstallFrameMenu couldn't get frame pointer");
          }
          TkpMenuNotifyToplevelCreate(winPtr->mainPtr->interp,
                  framePtr->menuName);
      }
  }
  /* End of tkframe.c */

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