Reverse the logical value of the TreeView search predicate.
Reverse the logical value of the TreeView search predicate.

From the TreeView's C API docs:
    Note the return value is reversed from what you would normally expect,
    though it has some similarity to strcmp() returning 0 for equal strings.
So for a Haskell predicate returning bool, we must invert the value.

darcs-hash:20060117103729-b4c10-157b111a8756efe198bce255344e06f4c00c0fa8.gz

thiagoarrais/gtk2hs,thiagoarrais/gtk2hs,thiagoarrais/gtk2hs