Could someone help me writing a new widget?

[Maurizio Colucci <seguso forever tin it>]

Hello, 

for the FREE project http:/segusoland.sourceforge.net (see screenshots!)

I need some kind soul to help me writing a new CheckListBox widget which is 
faster than the current one.

Its requirements are better specified in the file TODO-helping.txt, but I will 
copy them here:

=========

* I need some gtk expert that rewrites the CheckListBox in order to
  speed up selection and deselection of items. 

  We should exploit the fact that the CheckListBox can contain many
  files, even thousands, but there are only a few visible files at
  once.

  In order to speed up, the interface of the new CheckListBox might
  include methods such as "Lock" and "Unlock". This way you can 1)
  lock 2) add many items without the CheckListBox to readraw itself
  each time 3) unlock, and the changes are displayed all at once.

  Also, the new Checklistbox should not have an elevator, but buttons
  for moving one line at a time and one screen at a time.  These
  buttons should be big.

  The mouse wheel should continue to work though.

  Also, the new CheckListBox should be able to contain any widget
  (derived from some base class CheckListBox::Item).

  The new CheckListBox should continue to group selected items on top,
  and keep them always visible.

  The CheckListBox should be able to contain special items, called
  "Separator", that cannot be selected.

  The selectable items (those derived from CheckListBox::Item) should
  have the following possible states: hidden, deselected, strongly-
  selected, weakly-selected. Alternatively, we could merge
  strongly-selected and weakly-selected into one, but then it should
  be possible to set the colour of the selected items.

  The items in the checklistbox should be sortable according to a
  user-defined logic. Maybe the ::Item class should have a pure
  virtual method "comparer".

=================


Thanks a lot :-)

Maurizio