Do you mean http://docs.racket-lang.org/graphics/Draw__Clear__and_Flip_Operations.html?q=Viewport#%28part._.Pixmaps%29
I've not used the viewports stuff For the racket/gui toolkit I think you can do this by overriding on-paint for a canvas on a frame http://docs.racket-lang.org/gui/canvas___.html Happy holidays Stephen On Wed, 16 Dec 2015 at 11:02, Taro Annual <sagyo12341...@gmail.com> wrote: > 2015年12月16日水曜日 1時43分03秒 UTC+9 Alejandro López: > > I want to know how to put a background image in a viewport > > In graphic use, I recommend 2htdp/image library. > If you need to treat .bmp or .png so on, you can paste the file images > into your code. > (Dr. Racket's menubar, select [Insert] - [Insert Image...]) > > -- > You received this message because you are subscribed to the Google Groups > "Racket Users" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to racket-users+unsubscr...@googlegroups.com. > For more options, visit https://groups.google.com/d/optout. > -- You received this message because you are subscribed to the Google Groups "Racket Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to racket-users+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
