Index: SDL_ttf.c
===================================================================
--- SDL_ttf.c	(revision 2747)
+++ SDL_ttf.c	(working copy)
@@ -717,42 +717,42 @@
 	return unicode;
 }
 
-int TTF_FontHeight(TTF_Font *font)
+int TTF_FontHeight(const TTF_Font *font)
 {
 	return(font->height);
 }
 
-int TTF_FontAscent(TTF_Font *font)
+int TTF_FontAscent(const TTF_Font *font)
 {
 	return(font->ascent);
 }
 
-int TTF_FontDescent(TTF_Font *font)
+int TTF_FontDescent(const TTF_Font *font)
 {
 	return(font->descent);
 }
 
-int TTF_FontLineSkip(TTF_Font *font)
+int TTF_FontLineSkip(const TTF_Font *font)
 {
 	return(font->lineskip);
 }
 
-long TTF_FontFaces(TTF_Font *font)
+long TTF_FontFaces(const TTF_Font *font)
 {
 	return(font->face->num_faces);
 }
 
-int TTF_FontFaceIsFixedWidth(TTF_Font *font)
+int TTF_FontFaceIsFixedWidth(const TTF_Font *font)
 {
 	return(FT_IS_FIXED_WIDTH(font->face));
 }
 
-char *TTF_FontFaceFamilyName(TTF_Font *font)
+char *TTF_FontFaceFamilyName(const TTF_Font *font)
 {
 	return(font->face->family_name);
 }
 
-char *TTF_FontFaceStyleName(TTF_Font *font)
+char *TTF_FontFaceStyleName(const TTF_Font *font)
 {
 	return(font->face->style_name);
 }
@@ -1736,7 +1736,7 @@
 	Flush_Cache( font );
 }
 
-int TTF_GetFontStyle( TTF_Font* font )
+int TTF_GetFontStyle( const TTF_Font* font )
 {
 	return font->style;
 }
Index: SDL_ttf.h
===================================================================
--- SDL_ttf.h	(revision 2747)
+++ SDL_ttf.h	(working copy)
@@ -99,32 +99,32 @@
 #define TTF_STYLE_BOLD		0x01
 #define TTF_STYLE_ITALIC	0x02
 #define TTF_STYLE_UNDERLINE	0x04
-extern DECLSPEC int SDLCALL TTF_GetFontStyle(TTF_Font *font);
+extern DECLSPEC int SDLCALL TTF_GetFontStyle(const TTF_Font *font);
 extern DECLSPEC void SDLCALL TTF_SetFontStyle(TTF_Font *font, int style);
 
 /* Get the total height of the font - usually equal to point size */
-extern DECLSPEC int SDLCALL TTF_FontHeight(TTF_Font *font);
+extern DECLSPEC int SDLCALL TTF_FontHeight(const TTF_Font *font);
 
 /* Get the offset from the baseline to the top of the font
    This is a positive value, relative to the baseline.
  */
-extern DECLSPEC int SDLCALL TTF_FontAscent(TTF_Font *font);
+extern DECLSPEC int SDLCALL TTF_FontAscent(const TTF_Font *font);
 
 /* Get the offset from the baseline to the bottom of the font
    This is a negative value, relative to the baseline.
  */
-extern DECLSPEC int SDLCALL TTF_FontDescent(TTF_Font *font);
+extern DECLSPEC int SDLCALL TTF_FontDescent(const TTF_Font *font);
 
 /* Get the recommended spacing between lines of text for this font */
-extern DECLSPEC int SDLCALL TTF_FontLineSkip(TTF_Font *font);
+extern DECLSPEC int SDLCALL TTF_FontLineSkip(const TTF_Font *font);
 
 /* Get the number of faces of the font */
-extern DECLSPEC long SDLCALL TTF_FontFaces(TTF_Font *font);
+extern DECLSPEC long SDLCALL TTF_FontFaces(const TTF_Font *font);
 
 /* Get the font face attributes, if any */
-extern DECLSPEC int SDLCALL TTF_FontFaceIsFixedWidth(TTF_Font *font);
-extern DECLSPEC char * SDLCALL TTF_FontFaceFamilyName(TTF_Font *font);
-extern DECLSPEC char * SDLCALL TTF_FontFaceStyleName(TTF_Font *font);
+extern DECLSPEC int SDLCALL TTF_FontFaceIsFixedWidth(const TTF_Font *font);
+extern DECLSPEC char * SDLCALL TTF_FontFaceFamilyName(const TTF_Font *font);
+extern DECLSPEC char * SDLCALL TTF_FontFaceStyleName(const TTF_Font *font);
 
 /* Get the metrics (dimensions) of a glyph
    To understand what these metrics mean, here is a useful link: