Hi Gour,

Emacs haskell-mode has haskell-hoogle function to search Haskell API, but it, unfortunately, does not work with gtk2hs API which can be accessed via web at http://haskell.org/hoogle/?package=gtk

Not yet, although hopefully it will be done at some point. For now you can just take the gtk2hs hoogle database (http://haskell.org/hoogle/res/gtk.txt) and append it to the existing hoogle.txt file, and it should search through both of them. Thanks Neil