ScrolledPanel with vertical scrollbar only and WrapSizer

Question

I uses a WrapSizer in order to have an automatic layout (as thumbnail gallery) like this (see screenshot on the left) :

Answer 1

It looks like you just forgot to include

self.SetSizer(sizer)

Since the WrapSizer takes the whole frame, I think that will work. Also, instead of SetupScrolling, you can use

self.SetScrollRate(horiz, vert)

to specify the increment (in pixels, i think) of the scroll, and that should work.

I can't test it here right now though, and WrapSizers are a little weird - they sometimes have trouble figuring out their proper size. You may need to wrap it in a BoxSizer going the other direction.