diff --git a/src/Graphics/UI/WX/Draw.hs b/src/Graphics/UI/WX/Draw.hs
--- a/src/Graphics/UI/WX/Draw.hs
+++ b/src/Graphics/UI/WX/Draw.hs
@@ -206,7 +206,7 @@
 drawBitmap dc bitmap point transparent props
   = if bitmap == nullBitmap || objectIsNull bitmap 
      then return ()
-     else do ok <- bitmapOk bitmap
+     else do ok <- bitmapIsOk bitmap
              if not ok 
               then return ()
               else dcWith dc props (dcDrawBitmap dc bitmap point transparent)
diff --git a/src/Graphics/UI/WX/Menu.hs b/src/Graphics/UI/WX/Menu.hs
--- a/src/Graphics/UI/WX/Menu.hs
+++ b/src/Graphics/UI/WX/Menu.hs
@@ -274,7 +274,7 @@
   help  = newAttr "help" menuItemGetHelp menuItemSetHelp
 
 instance Checkable (MenuItem a) where
-  checkable = reflectiveAttr "checkable" menuItemIsCheckable (\m c -> menuItemSetCheckable m (intFromBool c))
+  checkable = reflectiveAttr "checkable" menuItemIsCheckable (\m c -> menuItemSetCheckable m c)
   checked   = newAttr "checked"   menuItemIsChecked menuItemCheck
 
 instance Identity (MenuItem a) where
diff --git a/src/Graphics/UI/WX/Types.hs b/src/Graphics/UI/WX/Types.hs
--- a/src/Graphics/UI/WX/Types.hs
+++ b/src/Graphics/UI/WX/Types.hs
@@ -34,7 +34,7 @@
     , BitMask(..), mask, (.+.), (.-.), bits, bitsSet
 
     -- ** Booleans
-    , boolFromInt, intFromBool
+    , toCBool, fromCBool
 
     -- ** Misc.
     , Style
diff --git a/wx.cabal b/wx.cabal
--- a/wx.cabal
+++ b/wx.cabal
@@ -1,5 +1,5 @@
 Name:           wx
-Version:        0.11.0
+Version:        0.11.1.0
 License:        LGPL
 License-file:   license.txt
 Homepage:       http://haskell.org/haskellwiki/WxHaskell