get/setSize types disagree

[mitchellwrosen]

getSize :: Ref _ -> IO Int
setSize :: Size -> IO ()

[mitchellwrosen]

Whoops, I could be wrong about this one. I forget what widget I was looking at when I made the ticket, but for the Input widget, it really does have

int Fl_Input_::size() const

void Fl_Input_::size	(int W, int H)		

[mitchellwrosen]

(heh, because getSize gets the length of the text whereas setSize sets the size of the widget)

[deech]

Ah yes, that makes sense. And actually this OO overloading (specifically being able to have two methods with the same name and completely different type signatures) that's common place in C++ is quite difficult to deal with Haskell and motivated most of the design. None of the existing literature addressed this. The gi-* packages use OverloadedLabels but that's a dangerous extension and I didn't want that in the codebase. OverloadedRecordFields could be a good step forward but I haven't had the time and the migration effort is pretty significant.

[mitchellwrosen]

Yup, very tricky to design around in Haskell for sure. I've been working on a simplified interface to fltkhs that probably will never become complete enough to release, but I do think there is enough complexity in fltkhs to warrant an opinionated Haskellier wrapper that trades power for simplicity.

[deech]

Totally! Here to help if you need it.