--- a/generic/tixDiStyle.c	2023-01-18 12:17:57.150995223 +0100
+++ b/generic/tixDiStyle.c	2023-01-18 12:18:33.855410140 +0100
@@ -31,7 +31,7 @@
 static int   		DItemStyleParseProc _ANSI_ARGS_((ClientData clientData,
 			    Tcl_Interp *interp, Tk_Window tkwin,
 			    CONST84 char *value,char *widRec, int offset));
-static char *		DItemStylePrintProc _ANSI_ARGS_((
+static const char *DItemStylePrintProc _ANSI_ARGS_((
 			    ClientData clientData, Tk_Window tkwin, 
 			    char *widRec, int offset,
 			    Tcl_FreeProc **freeProcPtr));
@@ -998,7 +998,7 @@
     return TCL_ERROR;
 }
 
-static char *DItemStylePrintProc(clientData, tkwin, widRec,offset, freeProcPtr)
+static const char *DItemStylePrintProc(clientData, tkwin, widRec,offset, freeProcPtr)
     ClientData clientData;
     Tk_Window tkwin;
     char *widRec;
--- a/generic/tixDItem.c	2023-01-18 12:16:16.448599643 +0100
+++ b/generic/tixDItem.c	2023-01-18 12:16:48.979081490 +0100
@@ -30,7 +30,7 @@
 		Tcl_Interp *interp, Tk_Window tkwin, CONST84 char *value,
 		char *widRec, int offset));
 
-static char *DItemPrintProc _ANSI_ARGS_((
+static const char *DItemPrintProc _ANSI_ARGS_((
 		ClientData clientData, Tk_Window tkwin, char *widRec,
 		int offset, Tcl_FreeProc **freeProcPtr));
 
@@ -548,7 +548,7 @@
     return TCL_OK;
 }
 
-static char *DItemPrintProc(clientData, tkwin, widRec,offset, freeProcPtr)
+static const char *DItemPrintProc(clientData, tkwin, widRec,offset, freeProcPtr)
     ClientData clientData;
     Tk_Window tkwin;
     char *widRec;
--- a/generic/tixImgCmp.c	2023-01-18 12:19:03.138943264 +0100
+++ b/generic/tixImgCmp.c	2023-01-18 12:21:32.884554265 +0100
@@ -142,8 +142,8 @@
  * The type record for bitmap images:
  */
 static int		ImgCmpCreate _ANSI_ARGS_((Tcl_Interp *interp,
-			    char *name, int argc, Tcl_Obj *CONST objv[],
-			    Tk_ImageType *typePtr, Tk_ImageMaster master,
+			    const char *name, int argc, Tcl_Obj *CONST objv[],
+			    const Tk_ImageType *typePtr, Tk_ImageMaster master,
 			    ClientData *clientDataPtr));
 static ClientData	ImgCmpGet _ANSI_ARGS_((Tk_Window tkwin,
 			    ClientData clientData));
@@ -378,11 +378,11 @@
 ImgCmpCreate(interp, name, argc, objv, typePtr, master, clientDataPtr)
     Tcl_Interp *interp;		/* Interpreter for application containing
 				 * image. */
-    char *name;			/* Name to use for image. */
+    const char *name;			/* Name to use for image. */
     int argc;			/* Number of arguments. */
     Tcl_Obj *CONST objv[];	/* Argument strings for options (doesn't
 				 * include image name or type). */
-    Tk_ImageType *typePtr;	/* Pointer to our type record (not used). */
+    const Tk_ImageType *typePtr;	/* Pointer to our type record (not used). */
     Tk_ImageMaster master;	/* Token for image, to be used by us in
 				 * later callbacks. */
     ClientData *clientDataPtr;	/* Store manager's token for image here;
--- a/generic/tixImgXpm.c	2023-01-18 12:22:25.967706824 +0100
+++ b/generic/tixImgXpm.c	2023-01-18 12:23:05.589074088 +0100
@@ -22,8 +22,8 @@
  */
 
 static int		ImgXpmCreate _ANSI_ARGS_((Tcl_Interp *interp,
-			    char *name, int argc, Tcl_Obj *CONST objv[],
-			    Tk_ImageType *typePtr, Tk_ImageMaster master,
+			    const char *name, int argc, Tcl_Obj *CONST objv[],
+			    const Tk_ImageType *typePtr, Tk_ImageMaster master,
 			    ClientData *clientDataPtr));
 static ClientData	ImgXpmGet _ANSI_ARGS_((Tk_Window tkwin,
 			    ClientData clientData));
@@ -115,11 +115,11 @@
 ImgXpmCreate(interp, name, argc, objv, typePtr, master, clientDataPtr)
     Tcl_Interp *interp;		/* Interpreter for application containing
 				 * image. */
-    char *name;			/* Name to use for image. */
+    const char *name;			/* Name to use for image. */
     int argc;			/* Number of arguments. */
     Tcl_Obj *CONST objv[];	/* Argument strings for options (doesn't
 				 * include image name or type). */
-    Tk_ImageType *typePtr;	/* Pointer to our type record (not used). */
+    const Tk_ImageType *typePtr;	/* Pointer to our type record (not used). */
     Tk_ImageMaster master;	/* Token for image, to be used by us in
 				 * later callbacks. */
     ClientData *clientDataPtr;	/* Store manager's token for image here;
--- a/generic/tixUtils.c	2023-01-18 12:14:01.374751235 +0100
+++ b/generic/tixUtils.c	2023-01-18 12:14:36.414192268 +0100
@@ -24,7 +24,7 @@
 static int	ReliefParseProc(ClientData clientData,
 	Tcl_Interp *interp, Tk_Window tkwin, CONST84 char *value,
 	char *widRec, int offset);
-static char *	ReliefPrintProc(ClientData clientData,
+static const char *ReliefPrintProc(ClientData clientData,
 	Tk_Window tkwin, char *widRec, int offset,
 	Tix_FreeProc **freeProcPtr);
 
@@ -637,7 +637,7 @@
     return TCL_ERROR;
 }
 
-static char *
+static const char *
 ReliefPrintProc(clientData, tkwin, widRec,offset, freeProcPtr)
     ClientData clientData;
     Tk_Window tkwin;