Initial revision

FossilOrigin-Name: 2bf55ca9aa942b581137b9f474da5ad9c1480de4

1 files changed, 939 insertions, 0 deletions

diff --git a/generic/tkFrame.c b/generic/tkFrame.c
new file mode 100644
index 0000000..a11f566
--- /dev/null
+++ b/generic/tkFrame.c
@@ -0,0 +1,939 @@
+/* 
+ * 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) 1994-1995 Sun Microsystems, Inc.
+ *
+ * See the file "license.terms" for information on usage and redistribution
+ * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ *
+ * SCCS: @(#) tkFrame.c 1.82 97/08/08 17:26:26
+ */
+
+#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 argc, char **argv,
+			    int flags));
+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		FrameWidgetCmd _ANSI_ARGS_((ClientData clientData,
+			    Tcl_Interp *interp, int argc, char **argv));
+static void		MapFrame _ANSI_ARGS_((ClientData clientData));
+
+/*
+ *--------------------------------------------------------------
+ *
+ * Tk_FrameCmd, Tk_ToplevelCmd --
+ *
+ *	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_FrameCmd(clientData, interp, argc, argv)
+    ClientData clientData;	/* Main window associated with
+				 * interpreter. */
+    Tcl_Interp *interp;		/* Current interpreter. */
+    int argc;			/* Number of arguments. */
+    char **argv;		/* Argument strings. */
+{
+    return TkCreateFrame(clientData, interp, argc, argv, 0, (char *) NULL);
+}
+
+int
+Tk_ToplevelCmd(clientData, interp, argc, argv)
+    ClientData clientData;	/* Main window associated with
+				 * interpreter. */
+    Tcl_Interp *interp;		/* Current interpreter. */
+    int argc;			/* Number of arguments. */
+    char **argv;		/* Argument strings. */
+{
+    return TkCreateFrame(clientData, interp, argc, argv, 1, (char *) NULL);
+}
+
+/*
+ *--------------------------------------------------------------
+ *
+ * TkFrameCreate --
+ *
+ *	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. */
+{
+    Tk_Window tkwin = (Tk_Window) clientData;
+    Frame *framePtr;
+    Tk_Window new;
+    char *className, *screenName, *visualName, *colormapName, *arg, *useOption;
+    int i, c, length, depth;
+    unsigned int mask;
+    Colormap colormap;
+    Visual *visual;
+
+    if (argc < 2) {
+	Tcl_AppendResult(interp, "wrong # args: should be \"",
+		argv[0], " pathName ?options?\"", (char *) NULL);
+	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 < argc; i += 2) {
+	arg = argv[i];
+	length = strlen(arg);
+	if (length < 2) {
+	    continue;
+	}
+	c = arg[1];
+	if ((c == 'c') && (strncmp(arg, "-class", strlen(arg)) == 0)
+		&& (length >= 3)) {
+	    className = argv[i+1];
+	} else if ((c == 'c')
+		&& (strncmp(arg, "-colormap", strlen(arg)) == 0)) {
+	    colormapName = argv[i+1];
+	} else if ((c == 's') && toplevel
+		&& (strncmp(arg, "-screen", strlen(arg)) == 0)) {
+	    screenName = argv[i+1];
+	} else if ((c == 'u') && toplevel
+		&& (strncmp(arg, "-use", strlen(arg)) == 0)) {
+	    useOption = argv[i+1];
+	} else if ((c == 'v')
+		&& (strncmp(arg, "-visual", strlen(arg)) == 0)) {
+	    visualName = argv[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, argv[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_CreateCommand(interp,
+	    Tk_PathName(new), FrameWidgetCmd,
+	    (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, argc-2, argv+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);
+    }
+    interp->result = Tk_PathName(new);
+    return TCL_OK;
+
+    error:
+    if (new != NULL) {
+	Tk_DestroyWindow(new);
+    }
+    return TCL_ERROR;
+}
+
+/*
+ *--------------------------------------------------------------
+ *
+ * FrameWidgetCmd --
+ *
+ *	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
+FrameWidgetCmd(clientData, interp, argc, argv)
+    ClientData clientData;	/* Information about frame widget. */
+    Tcl_Interp *interp;		/* Current interpreter. */
+    int argc;			/* Number of arguments. */
+    char **argv;		/* Argument strings. */
+{
+    register Frame *framePtr = (Frame *) clientData;
+    int result;
+    size_t length;
+    int c, i;
+
+    if (argc < 2) {
+	Tcl_AppendResult(interp, "wrong # args: should be \"",
+		argv[0], " option ?arg arg ...?\"", (char *) NULL);
+	return TCL_ERROR;
+    }
+    Tcl_Preserve((ClientData) framePtr);
+    c = argv[1][0];
+    length = strlen(argv[1]);
+    if ((c == 'c') && (strncmp(argv[1], "cget", length) == 0)
+	    && (length >= 2)) {
+	if (argc != 3) {
+	    Tcl_AppendResult(interp, "wrong # args: should be \"",
+		    argv[0], " cget option\"",
+		    (char *) NULL);
+	    result = TCL_ERROR;
+	    goto done;
+	}
+	result = Tk_ConfigureValue(interp, framePtr->tkwin, configSpecs,
+		(char *) framePtr, argv[2], framePtr->mask);
+    } else if ((c == 'c') && (strncmp(argv[1], "configure", length) == 0)
+	    && (length >= 2)) {
+	if (argc == 2) {
+	    result = Tk_ConfigureInfo(interp, framePtr->tkwin, configSpecs,
+		    (char *) framePtr, (char *) NULL, framePtr->mask);
+	} else if (argc == 3) {
+	    result = Tk_ConfigureInfo(interp, framePtr->tkwin, configSpecs,
+		    (char *) framePtr, argv[2], framePtr->mask);
+	} else {
+	    /*
+	     * Don't allow the options -class, -colormap, -container,
+	     * -newcmap, -screen, -use, or -visual to be changed.
+	     */
+
+	    for (i = 2; i < argc; i++) {
+		length = strlen(argv[i]);
+		if (length < 2) {
+		    continue;
+		}
+		c = argv[i][1];
+		if (((c == 'c') && (strncmp(argv[i], "-class", length) == 0)
+			&& (length >= 2))
+			|| ((c == 'c') && (framePtr->mask == TOPLEVEL)
+			&& (strncmp(argv[i], "-colormap", length) == 0)
+			&& (length >= 3))
+			|| ((c == 'c')
+			&& (strncmp(argv[i], "-container", length) == 0)
+			&& (length >= 3))
+			|| ((c == 's') && (framePtr->mask == TOPLEVEL)
+			&& (strncmp(argv[i], "-screen", length) == 0))
+			|| ((c == 'u') && (framePtr->mask == TOPLEVEL)
+			&& (strncmp(argv[i], "-use", length) == 0))
+			|| ((c == 'v') && (framePtr->mask == TOPLEVEL)
+			&& (strncmp(argv[i], "-visual", length) == 0))) {
+		    Tcl_AppendResult(interp, "can't modify ", argv[i],
+			    " option after widget is created", (char *) NULL);
+		    result = TCL_ERROR;
+		    goto done;
+		}
+	    }
+	    result = ConfigureFrame(interp, framePtr, argc-2, argv+2,
+		    TK_CONFIG_ARGV_ONLY);
+	}
+    } else {
+	Tcl_AppendResult(interp, "bad option \"", argv[1],
+		"\": must be cget or configure", (char *) NULL);
+	result = TCL_ERROR;
+    }
+
+    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 argv/argc 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 interp->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, argc, argv, 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 argc;			/* Number of valid entries in argv. */
+    char **argv;		/* 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,
+	    argc, argv, (char *) framePtr, flags | framePtr->mask) != 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;
+    GC gc;
+
+    framePtr->flags &= ~REDRAW_PENDING;
+    if ((framePtr->tkwin == NULL) || !Tk_IsMapped(tkwin)
+        || framePtr->isContainer) {
+	return;
+    }
+
+    if (framePtr->border != NULL) {
+	Tk_Fill3DRectangle(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) {
+	if (framePtr->flags & GOT_FOCUS) {
+	    gc = Tk_GCForColor(framePtr->highlightColorPtr,
+		    Tk_WindowId(tkwin));
+	} else {
+	    gc = Tk_GCForColor(framePtr->highlightBgColorPtr,
+		    Tk_WindowId(tkwin));
+	}
+	Tk_DrawFocusHighlight(tkwin, gc, 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;
+	TkpMenuNotifyToplevelCreate(winPtr->mainPtr->interp, 
+		framePtr->menuName);
+    }
+}