Initial revision

FossilOrigin-Name: 2bf55ca9aa942b581137b9f474da5ad9c1480de4

1 files changed, 990 insertions, 0 deletions

diff --git a/generic/tkConfig.c b/generic/tkConfig.c
new file mode 100644
index 0000000..2204714
--- /dev/null
+++ b/generic/tkConfig.c
@@ -0,0 +1,990 @@
+/* 
+ * tkConfig.c --
+ *
+ *	This file contains the Tk_ConfigureWidget procedure.
+ *
+ * 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: @(#) tkConfig.c 1.53 96/04/26 10:29:31
+ */
+
+#include "tkPort.h"
+#include "tk.h"
+
+/*
+ * Values for "flags" field of Tk_ConfigSpec structures.  Be sure
+ * to coordinate these values with those defined in tk.h
+ * (TK_CONFIG_COLOR_ONLY, etc.).  There must not be overlap!
+ *
+ * INIT -		Non-zero means (char *) things have been
+ *			converted to Tk_Uid's.
+ */
+
+#define INIT		0x20
+
+/*
+ * Forward declarations for procedures defined later in this file:
+ */
+
+static int		DoConfig _ANSI_ARGS_((Tcl_Interp *interp,
+			    Tk_Window tkwin, Tk_ConfigSpec *specPtr,
+			    Tk_Uid value, int valueIsUid, char *widgRec));
+static Tk_ConfigSpec *	FindConfigSpec _ANSI_ARGS_((Tcl_Interp *interp,
+			    Tk_ConfigSpec *specs, char *argvName,
+			    int needFlags, int hateFlags));
+static char *		FormatConfigInfo _ANSI_ARGS_((Tcl_Interp *interp,
+			    Tk_Window tkwin, Tk_ConfigSpec *specPtr,
+			    char *widgRec));
+static char *		FormatConfigValue _ANSI_ARGS_((Tcl_Interp *interp,
+			    Tk_Window tkwin, Tk_ConfigSpec *specPtr,
+			    char *widgRec, char *buffer,
+			    Tcl_FreeProc **freeProcPtr));
+
+/*
+ *--------------------------------------------------------------
+ *
+ * Tk_ConfigureWidget --
+ *
+ *	Process command-line options and database options to
+ *	fill in fields of a widget record with resources and
+ *	other parameters.
+ *
+ * Results:
+ *	A standard Tcl return value.  In case of an error,
+ *	interp->result will hold an error message.
+ *
+ * Side effects:
+ *	The fields of widgRec get filled in with information
+ *	from argc/argv and the option database.  Old information
+ *	in widgRec's fields gets recycled.
+ *
+ *--------------------------------------------------------------
+ */
+
+int
+Tk_ConfigureWidget(interp, tkwin, specs, argc, argv, widgRec, flags)
+    Tcl_Interp *interp;		/* Interpreter for error reporting. */
+    Tk_Window tkwin;		/* Window containing widget (needed to
+				 * set up X resources). */
+    Tk_ConfigSpec *specs;	/* Describes legal options. */
+    int argc;			/* Number of elements in argv. */
+    char **argv;		/* Command-line options. */
+    char *widgRec;		/* Record whose fields are to be
+				 * modified.  Values must be properly
+				 * initialized. */
+    int flags;			/* Used to specify additional flags
+				 * that must be present in config specs
+				 * for them to be considered.  Also,
+				 * may have TK_CONFIG_ARGV_ONLY set. */
+{
+    register Tk_ConfigSpec *specPtr;
+    Tk_Uid value;		/* Value of option from database. */
+    int needFlags;		/* Specs must contain this set of flags
+				 * or else they are not considered. */
+    int hateFlags;		/* If a spec contains any bits here, it's
+				 * not considered. */
+
+    needFlags = flags & ~(TK_CONFIG_USER_BIT - 1);
+    if (Tk_Depth(tkwin) <= 1) {
+	hateFlags = TK_CONFIG_COLOR_ONLY;
+    } else {
+	hateFlags = TK_CONFIG_MONO_ONLY;
+    }
+
+    /*
+     * Pass one:  scan through all the option specs, replacing strings
+     * with Tk_Uids (if this hasn't been done already) and clearing
+     * the TK_CONFIG_OPTION_SPECIFIED flags.
+     */
+
+    for (specPtr = specs; specPtr->type != TK_CONFIG_END; specPtr++) {
+	if (!(specPtr->specFlags & INIT) && (specPtr->argvName != NULL)) {
+	    if (specPtr->dbName != NULL) {
+		specPtr->dbName = Tk_GetUid(specPtr->dbName);
+	    }
+	    if (specPtr->dbClass != NULL) {
+		specPtr->dbClass = Tk_GetUid(specPtr->dbClass);
+	    }
+	    if (specPtr->defValue != NULL) {
+		specPtr->defValue = Tk_GetUid(specPtr->defValue);
+	    }
+	}
+	specPtr->specFlags = (specPtr->specFlags & ~TK_CONFIG_OPTION_SPECIFIED)
+		| INIT;
+    }
+
+    /*
+     * Pass two:  scan through all of the arguments, processing those
+     * that match entries in the specs.
+     */
+
+    for ( ; argc > 0; argc -= 2, argv += 2) {
+	specPtr = FindConfigSpec(interp, specs, *argv, needFlags, hateFlags);
+	if (specPtr == NULL) {
+	    return TCL_ERROR;
+	}
+
+	/*
+	 * Process the entry.
+	 */
+
+	if (argc < 2) {
+	    Tcl_AppendResult(interp, "value for \"", *argv,
+		    "\" missing", (char *) NULL);
+	    return TCL_ERROR;
+	}
+	if (DoConfig(interp, tkwin, specPtr, argv[1], 0, widgRec) != TCL_OK) {
+	    char msg[100];
+
+	    sprintf(msg, "\n    (processing \"%.40s\" option)",
+		    specPtr->argvName);
+	    Tcl_AddErrorInfo(interp, msg);
+	    return TCL_ERROR;
+	}
+	specPtr->specFlags |= TK_CONFIG_OPTION_SPECIFIED;
+    }
+
+    /*
+     * Pass three:  scan through all of the specs again;  if no
+     * command-line argument matched a spec, then check for info
+     * in the option database.  If there was nothing in the
+     * database, then use the default.
+     */
+
+    if (!(flags & TK_CONFIG_ARGV_ONLY)) {
+	for (specPtr = specs; specPtr->type != TK_CONFIG_END; specPtr++) {
+	    if ((specPtr->specFlags & TK_CONFIG_OPTION_SPECIFIED)
+		    || (specPtr->argvName == NULL)
+		    || (specPtr->type == TK_CONFIG_SYNONYM)) {
+		continue;
+	    }
+	    if (((specPtr->specFlags & needFlags) != needFlags)
+		    || (specPtr->specFlags & hateFlags)) {
+		continue;
+	    }
+	    value = NULL;
+	    if (specPtr->dbName != NULL) {
+		value = Tk_GetOption(tkwin, specPtr->dbName, specPtr->dbClass);
+	    }
+	    if (value != NULL) {
+		if (DoConfig(interp, tkwin, specPtr, value, 1, widgRec) !=
+			TCL_OK) {
+		    char msg[200];
+    
+		    sprintf(msg, "\n    (%s \"%.50s\" in widget \"%.50s\")",
+			    "database entry for",
+			    specPtr->dbName, Tk_PathName(tkwin));
+		    Tcl_AddErrorInfo(interp, msg);
+		    return TCL_ERROR;
+		}
+	    } else {
+		value = specPtr->defValue;
+		if ((value != NULL) && !(specPtr->specFlags
+			& TK_CONFIG_DONT_SET_DEFAULT)) {
+		    if (DoConfig(interp, tkwin, specPtr, value, 1, widgRec) !=
+			    TCL_OK) {
+			char msg[200];
+	
+			sprintf(msg,
+				"\n    (%s \"%.50s\" in widget \"%.50s\")",
+				"default value for",
+				specPtr->dbName, Tk_PathName(tkwin));
+			Tcl_AddErrorInfo(interp, msg);
+			return TCL_ERROR;
+		    }
+		}
+	    }
+	}
+    }
+
+    return TCL_OK;
+}
+
+/*
+ *--------------------------------------------------------------
+ *
+ * FindConfigSpec --
+ *
+ *	Search through a table of configuration specs, looking for
+ *	one that matches a given argvName.
+ *
+ * Results:
+ *	The return value is a pointer to the matching entry, or NULL
+ *	if nothing matched.  In that case an error message is left
+ *	in interp->result.
+ *
+ * Side effects:
+ *	None.
+ *
+ *--------------------------------------------------------------
+ */
+
+static Tk_ConfigSpec *
+FindConfigSpec(interp, specs, argvName, needFlags, hateFlags)
+    Tcl_Interp *interp;		/* Used for reporting errors. */
+    Tk_ConfigSpec *specs;	/* Pointer to table of configuration
+				 * specifications for a widget. */
+    char *argvName;		/* Name (suitable for use in a "config"
+				 * command) identifying particular option. */
+    int needFlags;		/* Flags that must be present in matching
+				 * entry. */
+    int hateFlags;		/* Flags that must NOT be present in
+				 * matching entry. */
+{
+    register Tk_ConfigSpec *specPtr;
+    register char c;		/* First character of current argument. */
+    Tk_ConfigSpec *matchPtr;	/* Matching spec, or NULL. */
+    size_t length;
+
+    c = argvName[1];
+    length = strlen(argvName);
+    matchPtr = NULL;
+    for (specPtr = specs; specPtr->type != TK_CONFIG_END; specPtr++) {
+	if (specPtr->argvName == NULL) {
+	    continue;
+	}
+	if ((specPtr->argvName[1] != c)
+		|| (strncmp(specPtr->argvName, argvName, length) != 0)) {
+	    continue;
+	}
+	if (((specPtr->specFlags & needFlags) != needFlags)
+		|| (specPtr->specFlags & hateFlags)) {
+	    continue;
+	}
+	if (specPtr->argvName[length] == 0) {
+	    matchPtr = specPtr;
+	    goto gotMatch;
+	}
+	if (matchPtr != NULL) {
+	    Tcl_AppendResult(interp, "ambiguous option \"", argvName,
+		    "\"", (char *) NULL);
+	    return (Tk_ConfigSpec *) NULL;
+	}
+	matchPtr = specPtr;
+    }
+
+    if (matchPtr == NULL) {
+	Tcl_AppendResult(interp, "unknown option \"", argvName,
+		"\"", (char *) NULL);
+	return (Tk_ConfigSpec *) NULL;
+    }
+
+    /*
+     * Found a matching entry.  If it's a synonym, then find the
+     * entry that it's a synonym for.
+     */
+
+    gotMatch:
+    specPtr = matchPtr;
+    if (specPtr->type == TK_CONFIG_SYNONYM) {
+	for (specPtr = specs; ; specPtr++) {
+	    if (specPtr->type == TK_CONFIG_END) {
+		Tcl_AppendResult(interp,
+			"couldn't find synonym for option \"",
+			argvName, "\"", (char *) NULL);
+		return (Tk_ConfigSpec *) NULL;
+	    }
+	    if ((specPtr->dbName == matchPtr->dbName) 
+		    && (specPtr->type != TK_CONFIG_SYNONYM)
+		    && ((specPtr->specFlags & needFlags) == needFlags)
+		    && !(specPtr->specFlags & hateFlags)) {
+		break;
+	    }
+	}
+    }
+    return specPtr;
+}
+
+/*
+ *--------------------------------------------------------------
+ *
+ * DoConfig --
+ *
+ *	This procedure applies a single configuration option
+ *	to a widget record.
+ *
+ * Results:
+ *	A standard Tcl return value.
+ *
+ * Side effects:
+ *	WidgRec is modified as indicated by specPtr and value.
+ *	The old value is recycled, if that is appropriate for
+ *	the value type.
+ *
+ *--------------------------------------------------------------
+ */
+
+static int
+DoConfig(interp, tkwin, specPtr, value, valueIsUid, widgRec)
+    Tcl_Interp *interp;		/* Interpreter for error reporting. */
+    Tk_Window tkwin;		/* Window containing widget (needed to
+				 * set up X resources). */
+    Tk_ConfigSpec *specPtr;	/* Specifier to apply. */
+    char *value;		/* Value to use to fill in widgRec. */
+    int valueIsUid;		/* Non-zero means value is a Tk_Uid;
+				 * zero means it's an ordinary string. */
+    char *widgRec;		/* Record whose fields are to be
+				 * modified.  Values must be properly
+				 * initialized. */
+{
+    char *ptr;
+    Tk_Uid uid;
+    int nullValue;
+
+    nullValue = 0;
+    if ((*value == 0) && (specPtr->specFlags & TK_CONFIG_NULL_OK)) {
+	nullValue = 1;
+    }
+
+    do {
+	ptr = widgRec + specPtr->offset;
+	switch (specPtr->type) {
+	    case TK_CONFIG_BOOLEAN:
+		if (Tcl_GetBoolean(interp, value, (int *) ptr) != TCL_OK) {
+		    return TCL_ERROR;
+		}
+		break;
+	    case TK_CONFIG_INT:
+		if (Tcl_GetInt(interp, value, (int *) ptr) != TCL_OK) {
+		    return TCL_ERROR;
+		}
+		break;
+	    case TK_CONFIG_DOUBLE:
+		if (Tcl_GetDouble(interp, value, (double *) ptr) != TCL_OK) {
+		    return TCL_ERROR;
+		}
+		break;
+	    case TK_CONFIG_STRING: {
+		char *old, *new;
+
+		if (nullValue) {
+		    new = NULL;
+		} else {
+		    new = (char *) ckalloc((unsigned) (strlen(value) + 1));
+		    strcpy(new, value);
+		}
+		old = *((char **) ptr);
+		if (old != NULL) {
+		    ckfree(old);
+		}
+		*((char **) ptr) = new;
+		break;
+	    }
+	    case TK_CONFIG_UID:
+		if (nullValue) {
+		    *((Tk_Uid *) ptr) = NULL;
+		} else {
+		    uid = valueIsUid ? (Tk_Uid) value : Tk_GetUid(value);
+		    *((Tk_Uid *) ptr) = uid;
+		}
+		break;
+	    case TK_CONFIG_COLOR: {
+		XColor *newPtr, *oldPtr;
+
+		if (nullValue) {
+		    newPtr = NULL;
+		} else {
+		    uid = valueIsUid ? (Tk_Uid) value : Tk_GetUid(value);
+		    newPtr = Tk_GetColor(interp, tkwin, uid);
+		    if (newPtr == NULL) {
+			return TCL_ERROR;
+		    }
+		}
+		oldPtr = *((XColor **) ptr);
+		if (oldPtr != NULL) {
+		    Tk_FreeColor(oldPtr);
+		}
+		*((XColor **) ptr) = newPtr;
+		break;
+	    }
+	    case TK_CONFIG_FONT: {
+		Tk_Font new;
+
+		if (nullValue) {
+		    new = NULL;
+		} else {
+		    new = Tk_GetFont(interp, tkwin, value);
+		    if (new == NULL) {
+			return TCL_ERROR;
+		    }
+		}
+		Tk_FreeFont(*((Tk_Font *) ptr));
+		*((Tk_Font *) ptr) = new;
+		break;
+	    }
+	    case TK_CONFIG_BITMAP: {
+		Pixmap new, old;
+
+		if (nullValue) {
+		    new = None;
+	        } else {
+		    uid = valueIsUid ? (Tk_Uid) value : Tk_GetUid(value);
+		    new = Tk_GetBitmap(interp, tkwin, uid);
+		    if (new == None) {
+			return TCL_ERROR;
+		    }
+		}
+		old = *((Pixmap *) ptr);
+		if (old != None) {
+		    Tk_FreeBitmap(Tk_Display(tkwin), old);
+		}
+		*((Pixmap *) ptr) = new;
+		break;
+	    }
+	    case TK_CONFIG_BORDER: {
+		Tk_3DBorder new, old;
+
+		if (nullValue) {
+		    new = NULL;
+		} else {
+		    uid = valueIsUid ? (Tk_Uid) value : Tk_GetUid(value);
+		    new = Tk_Get3DBorder(interp, tkwin, uid);
+		    if (new == NULL) {
+			return TCL_ERROR;
+		    }
+		}
+		old = *((Tk_3DBorder *) ptr);
+		if (old != NULL) {
+		    Tk_Free3DBorder(old);
+		}
+		*((Tk_3DBorder *) ptr) = new;
+		break;
+	    }
+	    case TK_CONFIG_RELIEF:
+		uid = valueIsUid ? (Tk_Uid) value : Tk_GetUid(value);
+		if (Tk_GetRelief(interp, uid, (int *) ptr) != TCL_OK) {
+		    return TCL_ERROR;
+		}
+		break;
+	    case TK_CONFIG_CURSOR:
+	    case TK_CONFIG_ACTIVE_CURSOR: {
+		Tk_Cursor new, old;
+
+		if (nullValue) {
+		    new = None;
+		} else {
+		    uid = valueIsUid ? (Tk_Uid) value : Tk_GetUid(value);
+		    new = Tk_GetCursor(interp, tkwin, uid);
+		    if (new == None) {
+			return TCL_ERROR;
+		    }
+		}
+		old = *((Tk_Cursor *) ptr);
+		if (old != None) {
+		    Tk_FreeCursor(Tk_Display(tkwin), old);
+		}
+		*((Tk_Cursor *) ptr) = new;
+		if (specPtr->type == TK_CONFIG_ACTIVE_CURSOR) {
+		    Tk_DefineCursor(tkwin, new);
+		}
+		break;
+	    }
+	    case TK_CONFIG_JUSTIFY:
+		uid = valueIsUid ? (Tk_Uid) value : Tk_GetUid(value);
+		if (Tk_GetJustify(interp, uid, (Tk_Justify *) ptr) != TCL_OK) {
+		    return TCL_ERROR;
+		}
+		break;
+	    case TK_CONFIG_ANCHOR:
+		uid = valueIsUid ? (Tk_Uid) value : Tk_GetUid(value);
+		if (Tk_GetAnchor(interp, uid, (Tk_Anchor *) ptr) != TCL_OK) {
+		    return TCL_ERROR;
+		}
+		break;
+	    case TK_CONFIG_CAP_STYLE:
+		uid = valueIsUid ? (Tk_Uid) value : Tk_GetUid(value);
+		if (Tk_GetCapStyle(interp, uid, (int *) ptr) != TCL_OK) {
+		    return TCL_ERROR;
+		}
+		break;
+	    case TK_CONFIG_JOIN_STYLE:
+		uid = valueIsUid ? (Tk_Uid) value : Tk_GetUid(value);
+		if (Tk_GetJoinStyle(interp, uid, (int *) ptr) != TCL_OK) {
+		    return TCL_ERROR;
+		}
+		break;
+	    case TK_CONFIG_PIXELS:
+		if (Tk_GetPixels(interp, tkwin, value, (int *) ptr)
+			!= TCL_OK) {
+		    return TCL_ERROR;
+		}
+		break;
+	    case TK_CONFIG_MM:
+		if (Tk_GetScreenMM(interp, tkwin, value, (double *) ptr)
+			!= TCL_OK) {
+		    return TCL_ERROR;
+		}
+		break;
+	    case TK_CONFIG_WINDOW: {
+		Tk_Window tkwin2;
+
+		if (nullValue) {
+		    tkwin2 = NULL;
+		} else {
+		    tkwin2 = Tk_NameToWindow(interp, value, tkwin);
+		    if (tkwin2 == NULL) {
+			return TCL_ERROR;
+		    }
+		}
+		*((Tk_Window *) ptr) = tkwin2;
+		break;
+	    }
+	    case TK_CONFIG_CUSTOM:
+		if ((*specPtr->customPtr->parseProc)(
+			specPtr->customPtr->clientData, interp, tkwin,
+			value, widgRec, specPtr->offset) != TCL_OK) {
+		    return TCL_ERROR;
+		}
+		break;
+	    default: {
+		sprintf(interp->result, "bad config table: unknown type %d",
+			specPtr->type);
+		return TCL_ERROR;
+	    }
+	}
+	specPtr++;
+    } while ((specPtr->argvName == NULL) && (specPtr->type != TK_CONFIG_END));
+    return TCL_OK;
+}
+
+/*
+ *--------------------------------------------------------------
+ *
+ * Tk_ConfigureInfo --
+ *
+ *	Return information about the configuration options
+ *	for a window, and their current values.
+ *
+ * Results:
+ *	Always returns TCL_OK.  Interp->result will be modified
+ *	hold a description of either a single configuration option
+ *	available for "widgRec" via "specs", or all the configuration
+ *	options available.  In the "all" case, the result will
+ *	available for "widgRec" via "specs".  The result will
+ *	be a list, each of whose entries describes one option.
+ *	Each entry will itself be a list containing the option's
+ *	name for use on command lines, database name, database
+ *	class, default value, and current value (empty string
+ *	if none).  For options that are synonyms, the list will
+ *	contain only two values:  name and synonym name.  If the
+ *	"name" argument is non-NULL, then the only information
+ *	returned is that for the named argument (i.e. the corresponding
+ *	entry in the overall list is returned).
+ *
+ * Side effects:
+ *	None.
+ *
+ *--------------------------------------------------------------
+ */
+
+int
+Tk_ConfigureInfo(interp, tkwin, specs, widgRec, argvName, flags)
+    Tcl_Interp *interp;		/* Interpreter for error reporting. */
+    Tk_Window tkwin;		/* Window corresponding to widgRec. */
+    Tk_ConfigSpec *specs;	/* Describes legal options. */
+    char *widgRec;		/* Record whose fields contain current
+				 * values for options. */
+    char *argvName;		/* If non-NULL, indicates a single option
+				 * whose info is to be returned.  Otherwise
+				 * info is returned for all options. */
+    int flags;			/* Used to specify additional flags
+				 * that must be present in config specs
+				 * for them to be considered. */
+{
+    register Tk_ConfigSpec *specPtr;
+    int needFlags, hateFlags;
+    char *list;
+    char *leader = "{";
+
+    needFlags = flags & ~(TK_CONFIG_USER_BIT - 1);
+    if (Tk_Depth(tkwin) <= 1) {
+	hateFlags = TK_CONFIG_COLOR_ONLY;
+    } else {
+	hateFlags = TK_CONFIG_MONO_ONLY;
+    }
+
+    /*
+     * If information is only wanted for a single configuration
+     * spec, then handle that one spec specially.
+     */
+
+    Tcl_SetResult(interp, (char *) NULL, TCL_STATIC);
+    if (argvName != NULL) {
+	specPtr = FindConfigSpec(interp, specs, argvName, needFlags,
+		hateFlags);
+	if (specPtr == NULL) {
+	    return TCL_ERROR;
+	}
+	interp->result = FormatConfigInfo(interp, tkwin, specPtr, widgRec);
+	interp->freeProc = TCL_DYNAMIC;
+	return TCL_OK;
+    }
+
+    /*
+     * Loop through all the specs, creating a big list with all
+     * their information.
+     */
+
+    for (specPtr = specs; specPtr->type != TK_CONFIG_END; specPtr++) {
+	if ((argvName != NULL) && (specPtr->argvName != argvName)) {
+	    continue;
+	}
+	if (((specPtr->specFlags & needFlags) != needFlags)
+		|| (specPtr->specFlags & hateFlags)) {
+	    continue;
+	}
+	if (specPtr->argvName == NULL) {
+	    continue;
+	}
+	list = FormatConfigInfo(interp, tkwin, specPtr, widgRec);
+	Tcl_AppendResult(interp, leader, list, "}", (char *) NULL);
+	ckfree(list);
+	leader = " {";
+    }
+    return TCL_OK;
+}
+
+/*
+ *--------------------------------------------------------------
+ *
+ * FormatConfigInfo --
+ *
+ *	Create a valid Tcl list holding the configuration information
+ *	for a single configuration option.
+ *
+ * Results:
+ *	A Tcl list, dynamically allocated.  The caller is expected to
+ *	arrange for this list to be freed eventually.
+ *
+ * Side effects:
+ *	Memory is allocated.
+ *
+ *--------------------------------------------------------------
+ */
+
+static char *
+FormatConfigInfo(interp, tkwin, specPtr, widgRec)
+    Tcl_Interp *interp;			/* Interpreter to use for things
+					 * like floating-point precision. */
+    Tk_Window tkwin;			/* Window corresponding to widget. */
+    register Tk_ConfigSpec *specPtr;	/* Pointer to information describing
+					 * option. */
+    char *widgRec;			/* Pointer to record holding current
+					 * values of info for widget. */
+{
+    char *argv[6], *result;
+    char buffer[200];
+    Tcl_FreeProc *freeProc = (Tcl_FreeProc *) NULL;
+
+    argv[0] = specPtr->argvName;
+    argv[1] = specPtr->dbName;
+    argv[2] = specPtr->dbClass;
+    argv[3] = specPtr->defValue;
+    if (specPtr->type == TK_CONFIG_SYNONYM) {
+	return Tcl_Merge(2, argv);
+    }
+    argv[4] = FormatConfigValue(interp, tkwin, specPtr, widgRec, buffer,
+	    &freeProc);
+    if (argv[1] == NULL) {
+	argv[1] = "";
+    }
+    if (argv[2] == NULL) {
+	argv[2] = "";
+    }
+    if (argv[3] == NULL) {
+	argv[3] = "";
+    }
+    if (argv[4] == NULL) {
+	argv[4] = "";
+    }
+    result = Tcl_Merge(5, argv);
+    if (freeProc != NULL) {
+	if ((freeProc == TCL_DYNAMIC) || (freeProc == (Tcl_FreeProc *) free)) {
+	    ckfree(argv[4]);
+	} else {
+	    (*freeProc)(argv[4]);
+	}
+    }
+    return result;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * FormatConfigValue --
+ *
+ *	This procedure formats the current value of a configuration
+ *	option.
+ *
+ * Results:
+ *	The return value is the formatted value of the option given
+ *	by specPtr and widgRec.  If the value is static, so that it
+ *	need not be freed, *freeProcPtr will be set to NULL;  otherwise
+ *	*freeProcPtr will be set to the address of a procedure to
+ *	free the result, and the caller must invoke this procedure
+ *	when it is finished with the result.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static char *
+FormatConfigValue(interp, tkwin, specPtr, widgRec, buffer, freeProcPtr)
+    Tcl_Interp *interp;		/* Interpreter for use in real conversions. */
+    Tk_Window tkwin;		/* Window corresponding to widget. */
+    Tk_ConfigSpec *specPtr;	/* Pointer to information describing option.
+				 * Must not point to a synonym option. */
+    char *widgRec;		/* Pointer to record holding current
+				 * values of info for widget. */
+    char *buffer;		/* Static buffer to use for small values.
+				 * Must have at least 200 bytes of storage. */
+    Tcl_FreeProc **freeProcPtr;	/* Pointer to word to fill in with address
+				 * of procedure to free the result, or NULL
+				 * if result is static. */
+{
+    char *ptr, *result;
+
+    *freeProcPtr = NULL;
+    ptr = widgRec + specPtr->offset;
+    result = "";
+    switch (specPtr->type) {
+	case TK_CONFIG_BOOLEAN:
+	    if (*((int *) ptr) == 0) {
+		result = "0";
+	    } else {
+		result = "1";
+	    }
+	    break;
+	case TK_CONFIG_INT:
+	    sprintf(buffer, "%d", *((int *) ptr));
+	    result = buffer;
+	    break;
+	case TK_CONFIG_DOUBLE:
+	    Tcl_PrintDouble(interp, *((double *) ptr), buffer);
+	    result = buffer;
+	    break;
+	case TK_CONFIG_STRING:
+	    result = (*(char **) ptr);
+	    if (result == NULL) {
+		result = "";
+	    }
+	    break;
+	case TK_CONFIG_UID: {
+	    Tk_Uid uid = *((Tk_Uid *) ptr);
+	    if (uid != NULL) {
+		result = uid;
+	    }
+	    break;
+	}
+	case TK_CONFIG_COLOR: {
+	    XColor *colorPtr = *((XColor **) ptr);
+	    if (colorPtr != NULL) {
+		result = Tk_NameOfColor(colorPtr);
+	    }
+	    break;
+	}
+	case TK_CONFIG_FONT: {
+	    Tk_Font tkfont = *((Tk_Font *) ptr);
+	    if (tkfont != NULL) {
+		result = Tk_NameOfFont(tkfont);
+	    }
+	    break;
+	}
+	case TK_CONFIG_BITMAP: {
+	    Pixmap pixmap = *((Pixmap *) ptr);
+	    if (pixmap != None) {
+		result = Tk_NameOfBitmap(Tk_Display(tkwin), pixmap);
+	    }
+	    break;
+	}
+	case TK_CONFIG_BORDER: {
+	    Tk_3DBorder border = *((Tk_3DBorder *) ptr);
+	    if (border != NULL) {
+		result = Tk_NameOf3DBorder(border);
+	    }
+	    break;
+	}
+	case TK_CONFIG_RELIEF:
+	    result = Tk_NameOfRelief(*((int *) ptr));
+	    break;
+	case TK_CONFIG_CURSOR:
+	case TK_CONFIG_ACTIVE_CURSOR: {
+	    Tk_Cursor cursor = *((Tk_Cursor *) ptr);
+	    if (cursor != None) {
+		result = Tk_NameOfCursor(Tk_Display(tkwin), cursor);
+	    }
+	    break;
+	}
+	case TK_CONFIG_JUSTIFY:
+	    result = Tk_NameOfJustify(*((Tk_Justify *) ptr));
+	    break;
+	case TK_CONFIG_ANCHOR:
+	    result = Tk_NameOfAnchor(*((Tk_Anchor *) ptr));
+	    break;
+	case TK_CONFIG_CAP_STYLE:
+	    result = Tk_NameOfCapStyle(*((int *) ptr));
+	    break;
+	case TK_CONFIG_JOIN_STYLE:
+	    result = Tk_NameOfJoinStyle(*((int *) ptr));
+	    break;
+	case TK_CONFIG_PIXELS:
+	    sprintf(buffer, "%d", *((int *) ptr));
+	    result = buffer;
+	    break;
+	case TK_CONFIG_MM:
+	    Tcl_PrintDouble(interp, *((double *) ptr), buffer);
+	    result = buffer;
+	    break;
+	case TK_CONFIG_WINDOW: {
+	    Tk_Window tkwin;
+
+	    tkwin = *((Tk_Window *) ptr);
+	    if (tkwin != NULL) {
+		result = Tk_PathName(tkwin);
+	    }
+	    break;
+	}
+	case TK_CONFIG_CUSTOM:
+	    result = (*specPtr->customPtr->printProc)(
+		    specPtr->customPtr->clientData, tkwin, widgRec,
+		    specPtr->offset, freeProcPtr);
+	    break;
+	default: 
+	    result = "?? unknown type ??";
+    }
+    return result;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tk_ConfigureValue --
+ *
+ *	This procedure returns the current value of a configuration
+ *	option for a widget.
+ *
+ * Results:
+ *	The return value is a standard Tcl completion code (TCL_OK or
+ *	TCL_ERROR).  Interp->result will be set to hold either the value
+ *	of the option given by argvName (if TCL_OK is returned) or
+ *	an error message (if TCL_ERROR is returned).
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+Tk_ConfigureValue(interp, tkwin, specs, widgRec, argvName, flags)
+    Tcl_Interp *interp;		/* Interpreter for error reporting. */
+    Tk_Window tkwin;		/* Window corresponding to widgRec. */
+    Tk_ConfigSpec *specs;	/* Describes legal options. */
+    char *widgRec;		/* Record whose fields contain current
+				 * values for options. */
+    char *argvName;		/* Gives the command-line name for the
+				 * option whose value is to be returned. */
+    int flags;			/* Used to specify additional flags
+				 * that must be present in config specs
+				 * for them to be considered. */
+{
+    Tk_ConfigSpec *specPtr;
+    int needFlags, hateFlags;
+
+    needFlags = flags & ~(TK_CONFIG_USER_BIT - 1);
+    if (Tk_Depth(tkwin) <= 1) {
+	hateFlags = TK_CONFIG_COLOR_ONLY;
+    } else {
+	hateFlags = TK_CONFIG_MONO_ONLY;
+    }
+    specPtr = FindConfigSpec(interp, specs, argvName, needFlags, hateFlags);
+    if (specPtr == NULL) {
+	return TCL_ERROR;
+    }
+    interp->result = FormatConfigValue(interp, tkwin, specPtr, widgRec,
+	    interp->result, &interp->freeProc);
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tk_FreeOptions --
+ *
+ *	Free up all resources associated with configuration options.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	Any resource in widgRec that is controlled by a configuration
+ *	option (e.g. a Tk_3DBorder or XColor) is freed in the appropriate
+ *	fashion.
+ *
+ *----------------------------------------------------------------------
+ */
+
+	/* ARGSUSED */
+void
+Tk_FreeOptions(specs, widgRec, display, needFlags)
+    Tk_ConfigSpec *specs;	/* Describes legal options. */
+    char *widgRec;		/* Record whose fields contain current
+				 * values for options. */
+    Display *display;		/* X display; needed for freeing some
+				 * resources. */
+    int needFlags;		/* Used to specify additional flags
+				 * that must be present in config specs
+				 * for them to be considered. */
+{
+    register Tk_ConfigSpec *specPtr;
+    char *ptr;
+
+    for (specPtr = specs; specPtr->type != TK_CONFIG_END; specPtr++) {
+	if ((specPtr->specFlags & needFlags) != needFlags) {
+	    continue;
+	}
+	ptr = widgRec + specPtr->offset;
+	switch (specPtr->type) {
+	    case TK_CONFIG_STRING:
+		if (*((char **) ptr) != NULL) {
+		    ckfree(*((char **) ptr));
+		    *((char **) ptr) = NULL;
+		}
+		break;
+	    case TK_CONFIG_COLOR:
+		if (*((XColor **) ptr) != NULL) {
+		    Tk_FreeColor(*((XColor **) ptr));
+		    *((XColor **) ptr) = NULL;
+		}
+		break;
+	    case TK_CONFIG_FONT:
+		Tk_FreeFont(*((Tk_Font *) ptr));
+		*((Tk_Font *) ptr) = NULL;
+		break;
+	    case TK_CONFIG_BITMAP:
+		if (*((Pixmap *) ptr) != None) {
+		    Tk_FreeBitmap(display, *((Pixmap *) ptr));
+		    *((Pixmap *) ptr) = None;
+		}
+		break;
+	    case TK_CONFIG_BORDER:
+		if (*((Tk_3DBorder *) ptr) != NULL) {
+		    Tk_Free3DBorder(*((Tk_3DBorder *) ptr));
+		    *((Tk_3DBorder *) ptr) = NULL;
+		}
+		break;
+	    case TK_CONFIG_CURSOR:
+	    case TK_CONFIG_ACTIVE_CURSOR:
+		if (*((Tk_Cursor *) ptr) != None) {
+		    Tk_FreeCursor(display, *((Tk_Cursor *) ptr));
+		    *((Tk_Cursor *) ptr) = None;
+		}
+	}
+    }
+}