Make the various stub tables and hook pointers const,

just as Tcl and Tk.
Make more internal tables "const"

18 files changed, 74 insertions, 58 deletions

diff --git a/generic/ttk/ttk.decls b/generic/ttk/ttk.decls
index db244ce..d18d5a8 100644
--- a/generic/ttk/ttk.decls
+++ b/generic/ttk/ttk.decls
@@ -1,5 +1,5 @@
 #
-# $Id: ttk.decls,v 1.4 2009/02/08 19:35:35 jenglish Exp $
+# $Id: ttk.decls,v 1.5 2010/02/05 17:42:21 nijtmans Exp $
 #
 
 library 	ttk
@@ -64,7 +64,7 @@ declare 10 current {
 }
 declare 11 current {
     Tcl_Obj *Ttk_NewStateSpecObj(
-    	unsigned int onbits,unsigned int offbits);
+    	unsigned int onbits, unsigned int offbits);
 }
 declare 12 current {
     Ttk_StateMap Ttk_GetStateMapFromObj(
diff --git a/generic/ttk/ttkButton.c b/generic/ttk/ttkButton.c
index 30818b1..1510a1e 100644
--- a/generic/ttk/ttkButton.c
+++ b/generic/ttk/ttkButton.c
@@ -1,4 +1,4 @@
-/* $Id: ttkButton.c,v 1.12 2010/01/31 22:50:55 jenglish Exp $
+/* $Id: ttkButton.c,v 1.13 2010/02/05 17:42:21 nijtmans Exp $
  * Copyright (c) 2003, Joe English
  *
  * label, button, checkbutton, radiobutton, and menubutton widgets.
@@ -784,7 +784,7 @@ typedef struct
 /*
  * Option specifications:
  */
-static const char *directionStrings[] = {
+static const char *const directionStrings[] = {
     "above", "below", "left", "right", "flush", NULL
 };
 static Tk_OptionSpec MenubuttonOptionSpecs[] =
diff --git a/generic/ttk/ttkDecls.h b/generic/ttk/ttkDecls.h
index a931c39..650fd86 100644
--- a/generic/ttk/ttkDecls.h
+++ b/generic/ttk/ttkDecls.h
@@ -1,5 +1,5 @@
 /*
- * $Id: ttkDecls.h,v 1.10 2010/02/05 10:56:43 nijtmans Exp $
+ * $Id: ttkDecls.h,v 1.11 2010/02/05 17:42:21 nijtmans Exp $
  *
  * This file is (mostly) automatically generated from ttk.decls.
  */
@@ -139,7 +139,7 @@ typedef struct TtkStubs {
     int magic;
     int epoch;
     int revision;
-    struct TtkStubHooks *hooks;
+    const struct TtkStubHooks *hooks;
 
     Ttk_Theme (*ttk_GetTheme) (Tcl_Interp *interp, const char *name); /* 0 */
     Ttk_Theme (*ttk_GetDefaultTheme) (Tcl_Interp *interp); /* 1 */
diff --git a/generic/ttk/ttkDefaultTheme.c b/generic/ttk/ttkDefaultTheme.c
index 4cc05a4..4d3729a 100644
--- a/generic/ttk/ttkDefaultTheme.c
+++ b/generic/ttk/ttkDefaultTheme.c
@@ -1,4 +1,4 @@
-/* $Id: ttkDefaultTheme.c,v 1.15 2010/01/22 14:17:53 nijtmans Exp $
+/* $Id: ttkDefaultTheme.c,v 1.16 2010/02/05 17:42:21 nijtmans Exp $
  *
  * Copyright (c) 2003, Joe English
  *
@@ -682,7 +682,7 @@ typedef struct {
     Tcl_Obj *colorObj;
 } MenubuttonArrowElement;
 
-static const char *directionStrings[] = {	/* See also: button.c */
+static const char *const directionStrings[] = {	/* See also: button.c */
     "above", "below", "left", "right", "flush", NULL
 };
 enum { POST_ABOVE, POST_BELOW, POST_LEFT, POST_RIGHT, POST_FLUSH };
diff --git a/generic/ttk/ttkEntry.c b/generic/ttk/ttkEntry.c
index 18591b6..58c2c35 100644
--- a/generic/ttk/ttkEntry.c
+++ b/generic/ttk/ttkEntry.c
@@ -1,5 +1,5 @@
 /*
- * $Id: ttkEntry.c,v 1.19 2010/01/31 22:50:55 jenglish Exp $
+ * $Id: ttkEntry.c,v 1.20 2010/02/05 17:42:21 nijtmans Exp $
  *
  * DERIVED FROM: tk/generic/tkEntry.c r1.35.
  *
@@ -33,7 +33,7 @@ typedef enum validateMode {
     VMODE_ALL, VMODE_KEY, VMODE_FOCUS, VMODE_FOCUSIN, VMODE_FOCUSOUT, VMODE_NONE
 } VMODE;
 
-static const char *validateStrings[] = {
+static const char *const validateStrings[] = {
     "all", "key", "focus", "focusin", "focusout", "none", NULL
 };
 
@@ -46,7 +46,7 @@ typedef enum validateReason {
     VALIDATE_FORCED
 } VREASON;
 
-static const char *validateReasonStrings[] = {
+static const char *const validateReasonStrings[] = {
     "key", "key", "focusin", "focusout", "forced", NULL
 };
 
diff --git a/generic/ttk/ttkGenStubs.tcl b/generic/ttk/ttkGenStubs.tcl
index 9adbcc9..3575847 100644
--- a/generic/ttk/ttkGenStubs.tcl
+++ b/generic/ttk/ttkGenStubs.tcl
@@ -8,7 +8,7 @@
 # See the file "license.terms" for information on usage and redistribution
 # of this file, and for a DISCLAIMER OF ALL WARRANTIES.
 # 
-# $Id: ttkGenStubs.tcl,v 1.4 2010/02/05 10:56:43 nijtmans Exp $
+# $Id: ttkGenStubs.tcl,v 1.5 2010/02/05 17:42:21 nijtmans Exp $
 #
 # SOURCE: tcl/tools/genStubs.tcl, revision 1.20
 #
@@ -730,7 +730,7 @@ proc genStubs::emitHeader {name} {
 	foreach hook $hooks($name) {
 	    set capHook [string toupper [string index $hook 0]]
 	    append capHook [string range $hook 1 end]
-	    append text "    struct ${capHook}Stubs *${hook}Stubs;\n"
+	    append text "    const struct ${capHook}Stubs *${hook}Stubs;\n"
 	}
 	append text "} ${capName}StubHooks;\n"
     }
@@ -738,7 +738,7 @@ proc genStubs::emitHeader {name} {
     append text "    int magic;\n"
     append text "    int epoch;\n"
     append text "    int revision;\n"
-    append text "    struct ${capName}StubHooks *hooks;\n\n"
+    append text "    const struct ${capName}StubHooks *hooks;\n\n"
 
     emitSlots $name text
 
@@ -767,25 +767,40 @@ proc genStubs::emitHeader {name} {
 
 proc genStubs::emitInit {name textVar} {
     variable hooks
+    variable interfaces
     variable epoch
     variable revision
 
     upvar $textVar text
+    set root 1
 
     set capName [string toupper [string index $name 0]]
     append capName [string range $name 1 end]
     set CAPName [string toupper $name]
 
     if {[info exists hooks($name)]} {
- 	append text "\nstatic ${capName}StubHooks ${name}StubHooks = \{\n"
+	append text "\nstatic const ${capName}StubHooks ${name}StubHooks = \{\n"
 	set sep "    "
 	foreach sub $hooks($name) {
-	    append text $sep "&${sub}Stubs"
+	    append text $sep "&${sub}ConstStubs"
 	    set sep ",\n    "
 	}
 	append text "\n\};\n"
     }
-    append text "\n${capName}Stubs ${name}Stubs = \{\n"
+    foreach intf [array names interfaces] {
+	if {[info exists hooks($intf)]} {
+	    if {$name in $hooks($intf)} {
+		set root 0
+		break;
+	    }
+	}
+    }
+
+    if {$root} {
+	append text "\nconst ${capName}Stubs ${name}ConstStubs = \{\n"
+    } else {
+	append text "\nstatic const ${capName}Stubs ${name}ConstStubs = \{\n"
+    }
     append text "    TCL_STUB_MAGIC,\n"
     append text "    ${CAPName}_STUBS_EPOCH,\n"
     append text "    ${CAPName}_STUBS_REVISION,\n"
@@ -794,7 +809,7 @@ proc genStubs::emitInit {name textVar} {
     } else {
 	append text "    0,\n"
     }
-    
+
     forAllStubs $name makeInit noGuard text {"    0, /* $i */\n"}
 
     append text "\};\n"
diff --git a/generic/ttk/ttkImage.c b/generic/ttk/ttkImage.c
index 8c50485..859c4a8 100644
--- a/generic/ttk/ttkImage.c
+++ b/generic/ttk/ttkImage.c
@@ -1,4 +1,4 @@
-/* $Id: ttkImage.c,v 1.8 2008/04/27 22:41:12 dkf Exp $
+/* $Id: ttkImage.c,v 1.9 2010/02/05 17:42:21 nijtmans Exp $
  *	Image specifications and image element factory.
  *
  * Copyright (C) 2004 Pat Thoyts <patthoyts@users.sf.net>
@@ -314,7 +314,7 @@ Ttk_CreateImageElement(
     const char *elementName,
     int objc, Tcl_Obj *const objv[])
 {
-    const char *optionStrings[] =
+    const char *const optionStrings[] =
 	 { "-border","-height","-padding","-sticky","-width",NULL };
     enum { O_BORDER, O_HEIGHT, O_PADDING, O_STICKY, O_WIDTH };
 
diff --git a/generic/ttk/ttkInit.c b/generic/ttk/ttkInit.c
index 1bdf0dd..218faf1 100644
--- a/generic/ttk/ttkInit.c
+++ b/generic/ttk/ttkInit.c
@@ -1,4 +1,4 @@
-/* $Id: ttkInit.c,v 1.10 2010/01/22 14:17:53 nijtmans Exp $
+/* $Id: ttkInit.c,v 1.11 2010/02/05 17:42:21 nijtmans Exp $
  * Copyright (c) 2003, Joe English
  *
  * Ttk package: initialization routine and miscellaneous utilities.
@@ -13,7 +13,7 @@
  * Legal values for the button -default option.
  * See also: enum Ttk_ButtonDefaultState.
  */
-const char *ttkDefaultStrings[] = {
+const char *const ttkDefaultStrings[] = {
     "normal", "active", "disabled", NULL
 };
 
@@ -29,7 +29,7 @@ int Ttk_GetButtonDefaultStateFromObj(
  * Legal values for the -compound option.
  * See also: enum Ttk_Compound.
  */
-const char *ttkCompoundStrings[] = {
+const char *const ttkCompoundStrings[] = {
     "none", "text", "image", "center",
     "top", "bottom", "left", "right", NULL
 };
@@ -46,7 +46,7 @@ int Ttk_GetCompoundFromObj(
  * Legal values for the -orient option.
  * See also: enum Ttk_Orient.
  */
-const char *ttkOrientStrings[] = {
+const char *const ttkOrientStrings[] = {
     "horizontal", "vertical", NULL
 };
 
@@ -62,7 +62,7 @@ int Ttk_GetOrientFromObj(
  * Recognized values for the -state compatibility option.
  * Other options are accepted and interpreted as synonyms for "normal".
  */
-static const char *ttkStateStrings[] = {
+static const char *const ttkStateStrings[] = {
     "normal", "readonly", "disabled", "active", NULL
 };
 enum { 
@@ -259,7 +259,7 @@ static void RegisterThemes(Tcl_Interp *interp)
  * Ttk initialization.
  */
 
-extern TtkStubs ttkStubs;
+extern const TtkStubs ttkConstStubs;
 
 MODULE_SCOPE int
 Ttk_Init(Tcl_Interp *interp)
@@ -276,7 +276,8 @@ Ttk_Init(Tcl_Interp *interp)
 
     Ttk_PlatformInit(interp);
 
-    Tcl_PkgProvideEx(interp, "Ttk", TTK_PATCH_LEVEL, (void*)&ttkStubs);
+    Tcl_PkgProvideEx(interp, "Ttk", TTK_PATCH_LEVEL,
+	    (ClientData) &ttkConstStubs);
 
     return TCL_OK;
 }
diff --git a/generic/ttk/ttkLayout.c b/generic/ttk/ttkLayout.c
index 7e8ad96..4085614 100644
--- a/generic/ttk/ttkLayout.c
+++ b/generic/ttk/ttkLayout.c
@@ -5,7 +5,7 @@
  *
  * Copyright (c) 2003 Joe English.  Freely redistributable.
  *
- * $Id: ttkLayout.c,v 1.16 2009/02/09 01:45:46 jenglish Exp $
+ * $Id: ttkLayout.c,v 1.17 2010/02/05 17:42:21 nijtmans Exp $
  */
 
 #include <string.h>
@@ -605,13 +605,13 @@ Ttk_InstantiateLayout(Ttk_Theme theme, Ttk_TemplateNode *op)
  */
 
 /* NB: This must match bit definitions TTK_PACK_LEFT etc. */
-static const char *packSideStrings[] =
+static const char *const packSideStrings[] =
     { "left", "right", "top", "bottom", NULL };
 
 Ttk_LayoutTemplate Ttk_ParseLayoutTemplate(Tcl_Interp *interp, Tcl_Obj *objPtr)
 {
     enum {  OP_SIDE, OP_STICKY, OP_EXPAND, OP_BORDER, OP_UNIT, OP_CHILDREN };
-    static const char *optStrings[] = {
+    static const char *const optStrings[] = {
 	    "-side", "-sticky", "-expand", "-border", "-unit", "-children", 0 };
 
     int i = 0, objc;
diff --git a/generic/ttk/ttkNotebook.c b/generic/ttk/ttkNotebook.c
index 5088d1e..e6fdace 100644
--- a/generic/ttk/ttkNotebook.c
+++ b/generic/ttk/ttkNotebook.c
@@ -1,4 +1,4 @@
-/* $Id: ttkNotebook.c,v 1.23 2010/01/31 22:50:55 jenglish Exp $
+/* $Id: ttkNotebook.c,v 1.24 2010/02/05 17:42:21 nijtmans Exp $
  * Copyright (c) 2004, Joe English
  */
 
@@ -20,7 +20,7 @@
 
 #define DEFAULT_MIN_TAB_WIDTH 24
 
-static const char *TabStateStrings[] = { "normal", "disabled", "hidden", 0 };
+static const char *const TabStateStrings[] = { "normal", "disabled", "hidden", 0 };
 typedef enum {
     TAB_STATE_NORMAL, TAB_STATE_DISABLED, TAB_STATE_HIDDEN
 } TAB_STATE;
@@ -1046,7 +1046,7 @@ static int NotebookHideCommand(
 static int NotebookIdentifyCommand(
     void *recordPtr, Tcl_Interp *interp, int objc, Tcl_Obj *const objv[])
 {
-    static const char *whatTable[] = { "element", "tab", NULL };
+    static const char *const whatTable[] = { "element", "tab", NULL };
     enum { IDENTIFY_ELEMENT, IDENTIFY_TAB };
     int what = IDENTIFY_ELEMENT;
     Notebook *nb = recordPtr;
diff --git a/generic/ttk/ttkPanedwindow.c b/generic/ttk/ttkPanedwindow.c
index be9e549..21afebe 100644
--- a/generic/ttk/ttkPanedwindow.c
+++ b/generic/ttk/ttkPanedwindow.c
@@ -1,4 +1,4 @@
-/* $Id: ttkPanedwindow.c,v 1.20 2010/01/31 22:50:56 jenglish Exp $
+/* $Id: ttkPanedwindow.c,v 1.21 2010/02/05 17:42:21 nijtmans Exp $
  *
  * Copyright (c) 2005, Joe English.  Freely redistributable.
  *
@@ -713,7 +713,7 @@ static int PanedForgetCommand(
 static int PanedIdentifyCommand(
     void *recordPtr, Tcl_Interp *interp, int objc, Tcl_Obj *const objv[])
 {
-    const char *whatTable[] = { "element", "sash", NULL };
+    const char *const whatTable[] = { "element", "sash", NULL };
     enum { IDENTIFY_ELEMENT, IDENTIFY_SASH };
     int what = IDENTIFY_SASH;
     Paned *pw = recordPtr;
diff --git a/generic/ttk/ttkProgress.c b/generic/ttk/ttkProgress.c
index 679cc0b..0ea3576 100644
--- a/generic/ttk/ttkProgress.c
+++ b/generic/ttk/ttkProgress.c
@@ -1,4 +1,4 @@
-/* $Id: ttkProgress.c,v 1.9 2010/01/31 22:50:56 jenglish Exp $
+/* $Id: ttkProgress.c,v 1.10 2010/02/05 17:42:21 nijtmans Exp $
  *
  * Copyright (c) Joe English, Pat Thoyts, Michael Kirkham
  *
@@ -19,7 +19,7 @@
 enum {
     TTK_PROGRESSBAR_DETERMINATE, TTK_PROGRESSBAR_INDETERMINATE
 };
-static const char *ProgressbarModeStrings[] = {
+static const char *const ProgressbarModeStrings[] = {
     "determinate", "indeterminate", NULL
 };
 
diff --git a/generic/ttk/ttkStubInit.c b/generic/ttk/ttkStubInit.c
index 11b60f9..56c7696 100644
--- a/generic/ttk/ttkStubInit.c
+++ b/generic/ttk/ttkStubInit.c
@@ -1,5 +1,5 @@
 /*
- * $Id: ttkStubInit.c,v 1.2 2006/11/03 03:06:22 das Exp $
+ * $Id: ttkStubInit.c,v 1.3 2010/02/05 17:42:21 nijtmans Exp $
  *
  * This file is (mostly) automatically generated from ttk.decls.
  * It is compiled and linked in with the ttk package proper.
@@ -8,11 +8,11 @@
 #include "tk.h"
 #include "ttkTheme.h"
 
-MODULE_SCOPE TtkStubs ttkStubs;
+MODULE_SCOPE const TtkStubs ttkConstStubs;
 
 /* !BEGIN!: Do not edit below this line. */
 
-TtkStubs ttkStubs = {
+const TtkStubs ttkConstStubs = {
     TCL_STUB_MAGIC,
     TTK_STUBS_EPOCH,
     TTK_STUBS_REVISION,
diff --git a/generic/ttk/ttkStubLib.c b/generic/ttk/ttkStubLib.c
index 5087a18..0b180d9 100644
--- a/generic/ttk/ttkStubLib.c
+++ b/generic/ttk/ttkStubLib.c
@@ -1,5 +1,5 @@
 /*
- * $Id: ttkStubLib.c,v 1.6 2008/04/02 21:31:58 das Exp $
+ * $Id: ttkStubLib.c,v 1.7 2010/02/05 17:42:21 nijtmans Exp $
  * SOURCE: tk/generic/tkStubLib.c, version 1.9 2004/03/17
  */
 
@@ -42,9 +42,9 @@ TtkInitializeStubs(
     const char *packageName = "Ttk";
     const char *errMsg = NULL;
     ClientData pkgClientData = NULL;
-    const char *actualVersion= Tcl_PkgRequireEx(
+    const char *actualVersion = Tcl_PkgRequireEx(
 	interp, packageName, version, exact, &pkgClientData);
-    TtkStubs *stubsPtr = pkgClientData;
+    const TtkStubs *stubsPtr = pkgClientData;
 
     if (!actualVersion) {
 	return NULL;
diff --git a/generic/ttk/ttkTheme.c b/generic/ttk/ttkTheme.c
index 6bc3e42..d0c9174 100644
--- a/generic/ttk/ttkTheme.c
+++ b/generic/ttk/ttkTheme.c
@@ -9,7 +9,7 @@
  * See the file "license.terms" for information on usage and redistribution
  * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
  *
- * $Id: ttkTheme.c,v 1.20 2010/01/31 22:50:56 jenglish Exp $
+ * $Id: ttkTheme.c,v 1.21 2010/02/05 17:42:21 nijtmans Exp $
  */
 
 #include <stdlib.h>
@@ -1372,7 +1372,7 @@ static int StyleThemeCreateCmd(
     ClientData clientData, Tcl_Interp *interp, int objc, Tcl_Obj *const objv[])
 {
     StylePackageData *pkgPtr = clientData;
-    static const char *optStrings[] =
+    static const char *const optStrings[] =
     	 { "-parent", "-settings", NULL };
     enum { OP_PARENT, OP_SETTINGS };
     Ttk_Theme parentTheme = pkgPtr->defaultTheme, newTheme;
diff --git a/generic/ttk/ttkTreeview.c b/generic/ttk/ttkTreeview.c
index 617aabf..ece8e3a 100644
--- a/generic/ttk/ttkTreeview.c
+++ b/generic/ttk/ttkTreeview.c
@@ -1,4 +1,4 @@
-/* $Id: ttkTreeview.c,v 1.34 2010/01/31 22:50:56 jenglish Exp $
+/* $Id: ttkTreeview.c,v 1.35 2010/02/05 17:42:21 nijtmans Exp $
  * Copyright (c) 2004, Joe English
  *
  * ttk::treeview widget implementation.
@@ -321,14 +321,14 @@ static Tk_OptionSpec HeadingOptionSpecs[] = {
 
 #define DEFAULT_SHOW	"tree headings"
 
-static const char *showStrings[] = {
+static const char *const showStrings[] = {
     "tree", "headings", NULL
 };
 
 static int GetEnumSetFromObj(
     Tcl_Interp *interp,
     Tcl_Obj *objPtr,
-    const char *table[],
+    const char *const table[],
     unsigned *resultPtr)
 {
     unsigned result = 0;
@@ -434,7 +434,7 @@ typedef struct {
 #define SCROLLCMD_CHANGED	(USER_MASK<<2)
 #define SHOW_CHANGED 		(USER_MASK<<3)
 
-static const char *SelectModeStrings[] = { "none", "browse", "extended", NULL };
+static const char *const SelectModeStrings[] = { "none", "browse", "extended", NULL };
 
 static Tk_OptionSpec TreeviewOptionSpecs[] = {
     WIDGET_TAKES_FOCUS,
@@ -1506,7 +1506,7 @@ typedef enum {
     REGION_CELL
 } TreeRegion;
 
-static const char *regionStrings[] = {
+static const char *const regionStrings[] = {
     "nothing", "heading", "separator", "tree", "cell", 0
 };
 
@@ -2253,7 +2253,7 @@ done:
 static int TreeviewIdentifyCommand(
     void *recordPtr, Tcl_Interp *interp, int objc, Tcl_Obj *const objv[])
 {
-    static const char *submethodStrings[] =
+    static const char *const submethodStrings[] =
 	 { "region", "item", "column", "row", "element", NULL };
     enum { I_REGION, I_ITEM, I_COLUMN, I_ROW, I_ELEMENT };
 
@@ -2910,7 +2910,7 @@ static int TreeviewSelectionCommand(
     enum {
 	SELECTION_SET, SELECTION_ADD, SELECTION_REMOVE, SELECTION_TOGGLE
     };
-    static const char *selopStrings[] = {
+    static const char *const selopStrings[] = {
 	"set", "add", "remove", "toggle", NULL
     };
 
diff --git a/generic/ttk/ttkWidget.c b/generic/ttk/ttkWidget.c
index f6f3885..dbd88b0 100644
--- a/generic/ttk/ttkWidget.c
+++ b/generic/ttk/ttkWidget.c
@@ -1,4 +1,4 @@
-/* $Id: ttkWidget.c,v 1.24 2010/01/31 22:50:56 jenglish Exp $
+/* $Id: ttkWidget.c,v 1.25 2010/02/05 17:42:21 nijtmans Exp $
  * Copyright (c) 2003, Joe English
  *
  * Core widget utilities.
@@ -755,7 +755,7 @@ int TtkWidgetIdentifyCommand(
 {
     WidgetCore *corePtr = recordPtr;
     Ttk_Element element;
-    static const char *whatTable[] = { "element", NULL };
+    static const char *const whatTable[] = { "element", NULL };
     int x, y, what;
 
     if (objc < 4 || objc > 5) {
diff --git a/generic/ttk/ttkWidget.h b/generic/ttk/ttkWidget.h
index 0f86cc3..db15fd7 100644
--- a/generic/ttk/ttkWidget.h
+++ b/generic/ttk/ttkWidget.h
@@ -1,4 +1,4 @@
-/* $Id: ttkWidget.h,v 1.12 2010/01/31 22:50:56 jenglish Exp $
+/* $Id: ttkWidget.h,v 1.13 2010/02/05 17:42:21 nijtmans Exp $
  * Copyright (c) 2003, Joe English
  * Helper routines for widget implementations.
  */
@@ -240,9 +240,9 @@ MODULE_SCOPE Tk_OptionSpec ttkCoreOptionSpecs[];
  * String tables for widget resource specifications:
  */
 
-MODULE_SCOPE const char *ttkOrientStrings[];
-MODULE_SCOPE const char *ttkCompoundStrings[];
-MODULE_SCOPE const char *ttkDefaultStrings[];
+MODULE_SCOPE const char *const ttkOrientStrings[];
+MODULE_SCOPE const char *const ttkCompoundStrings[];
+MODULE_SCOPE const char *const ttkDefaultStrings[];
 
 /*
  * ... other option types...