In SDL do I need to free the surface if I re-render text?

if I use the following code...

message = TTF_RenderText_Solid( font, "Lorem Ipsum", textColor ); 

Do I need to free message before I can开发者_JAVA技巧 do this

message = TTF_RenderText_Solid( font, "Lorem Ipsum part 2", textColor ); 

i.e. does it give me a new surface (and so I have to clean up the old one) or does it just blit over the old one?

Yes, you should free message with SDL_FreeSurface when you're done with it. The returned SDL_Surface is allocated with SDL_AllocSurface() , and is not reused, so you'll leak if you don't free it in this case.