/* * tkConfig.c -- * * This file contains the Tk_ConfigureWidget procedure. * * Copyright (c) 1990-1993 The Regents of the University of California. * All rights reserved. * * Permission is hereby granted, without written agreement and without * license or royalty fees, to use, copy, modify, and distribute this * software and its documentation for any purpose, provided that the * above copyright notice and the following two paragraphs appear in * all copies of this software. * * IN NO EVENT SHALL THE UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY FOR * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT * OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF THE UNIVERSITY OF * CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * * THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY WARRANTIES, * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY * AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS * ON AN "AS IS" BASIS, AND THE UNIVERSITY OF CALIFORNIA HAS NO OBLIGATION TO * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. */ #ifndef lint static char rcsid[] = "$Header: /user6/ouster/wish/RCS/tkConfig.c,v 1.37 93/10/14 11:10:05 ouster Exp $ SPRITE (Berkeley)"; #endif #include "tkConfig.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)); /* *-------------------------------------------------------------- * * 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_GetColorModel(tkwin) != TK_COLOR) { 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. */ int 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, (Colormap) None, uid); if (newPtr == NULL) { return TCL_ERROR; } } oldPtr = *((XColor **) ptr); if (oldPtr != NULL) { Tk_FreeColor(oldPtr); } *((XColor **) ptr) = newPtr; break; } case TK_CONFIG_FONT: { XFontStruct *newPtr, *oldPtr; if (nullValue) { newPtr = NULL; } else { uid = valueIsUid ? (Tk_Uid) value : Tk_GetUid(value); newPtr = Tk_GetFontStruct(interp, tkwin, uid); if (newPtr == NULL) { return TCL_ERROR; } } oldPtr = *((XFontStruct **) ptr); if (oldPtr != NULL) { Tk_FreeFontStruct(oldPtr); } *((XFontStruct **) ptr) = newPtr; 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, (Colormap) None, 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: { 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 = *((Cursor *) ptr); if (old != None) { Tk_FreeCursor(Tk_Display(tkwin), old); } *((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_GetColorModel(tkwin) != TK_COLOR) { 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], *ptr, *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); } ptr = widgRec + specPtr->offset; argv[4] = ""; switch (specPtr->type) { case TK_CONFIG_BOOLEAN: if (*((int *) ptr) == 0) { argv[4] = "0"; } else { argv[4] = "1"; } break; case TK_CONFIG_INT: sprintf(buffer, "%d", *((int *) ptr)); argv[4] = buffer; break; case TK_CONFIG_DOUBLE: Tcl_PrintDouble(interp, *((double *) ptr), buffer); argv[4] = buffer; break; case TK_CONFIG_STRING: argv[4] = (*(char **) ptr); break; case TK_CONFIG_UID: { Tk_Uid uid = *((Tk_Uid *) ptr); if (uid != NULL) { argv[4] = uid; } break; } case TK_CONFIG_COLOR: { XColor *colorPtr = *((XColor **) ptr); if (colorPtr != NULL) { argv[4] = Tk_NameOfColor(colorPtr); } break; } case TK_CONFIG_FONT: { XFontStruct *fontStructPtr = *((XFontStruct **) ptr); if (fontStructPtr != NULL) { argv[4] = Tk_NameOfFontStruct(fontStructPtr); } break; } case TK_CONFIG_BITMAP: { Pixmap pixmap = *((Pixmap *) ptr); if (pixmap != None) { argv[4] = Tk_NameOfBitmap(Tk_Display(tkwin), pixmap); } break; } case TK_CONFIG_BORDER: { Tk_3DBorder border = *((Tk_3DBorder *) ptr); if (border != NULL) { argv[4] = Tk_NameOf3DBorder(border); } break; } case TK_CONFIG_RELIEF: argv[4] = Tk_NameOfRelief(*((int *) ptr)); break; case TK_CONFIG_CURSOR: case TK_CONFIG_ACTIVE_CURSOR: { Cursor cursor = *((Cursor *) ptr); if (cursor != None) { argv[4] = Tk_NameOfCursor(Tk_Display(tkwin), cursor); } break; } case TK_CONFIG_JUSTIFY: argv[4] = Tk_NameOfJustify(*((Tk_Justify *) ptr)); break; case TK_CONFIG_ANCHOR: argv[4] = Tk_NameOfAnchor(*((Tk_Anchor *) ptr)); break; case TK_CONFIG_CAP_STYLE: argv[4] = Tk_NameOfCapStyle(*((int *) ptr)); break; case TK_CONFIG_JOIN_STYLE: argv[4] = Tk_NameOfJoinStyle(*((int *) ptr)); break; case TK_CONFIG_PIXELS: sprintf(buffer, "%d", *((int *) ptr)); argv[4] = buffer; break; case TK_CONFIG_MM: Tcl_PrintDouble(interp, *((double *) ptr), buffer); argv[4] = buffer; break; case TK_CONFIG_WINDOW: { Tk_Window tkwin; tkwin = *((Tk_Window *) ptr); if (tkwin != NULL) { argv[4] = Tk_PathName(tkwin); } break; } case TK_CONFIG_CUSTOM: argv[4] = (*specPtr->customPtr->printProc)( specPtr->customPtr->clientData, tkwin, widgRec, specPtr->offset, &freeProc); break; default: argv[4] = "?? unknown type ??"; } 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_FreeProc *) free) { ckfree(argv[4]); } else { (*freeProc)(argv[4]); } } return result; } /* *---------------------------------------------------------------------- * * 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: if (*((XFontStruct **) ptr) != NULL) { Tk_FreeFontStruct(*((XFontStruct **) ptr)); *((XFontStruct **) 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 (*((Cursor *) ptr) != None) { Tk_FreeCursor(display, *((Cursor *) ptr)); *((Cursor *) ptr) = None; } } } }