gtk2hs: Unable to render combo box on Windows

Question

My problem is very confusing to me because it occurs only on Windows (I am testing with XP). It all works perfectly on Linux.

I am using gtkbuilder to load my layout. (in case it's important)

route_input <- builderGetObject builder castToComboBox "route"
comboBoxSetModelText route_input
comboBoxAppendText route_input "first"
comboBoxAppendText route_input "second"
comboBoxAppendText route_input "third"
t <- listStoreToList =<< comboBoxGetModelText route_input
putStrLn $ show t

Prints:

["first","second","third"]

In the window, it displays a combo box with three entries, all of them blank I hit the "ok" button, which runs the following code in its signal handler:

t <- listStoreToList =<< comboBoxGetModelText cbox
putStrLn $ show t
selection <- comboBoxGetActiveText cbox
putStrLn $ show selection

Prints:

["first","second","third"]
Nothing

Does anyone have any ideas regarding this?

Answer 1

Ok, it turns out that it was a package version issue. The gtk package in the Windows version was one version number higher than the version on the Linux machines. That must have broken something.