search for: filter_include_list

I''m trying to make a ComboBox that can be typed into but only accepts entries that are already in the drop-down list. I hoped a combination of the CB_DROPDOWN style and a TextValidator with the FILTER_INCLUDE_LIST would make that happen, but the validator seems to be ignored. Is that combination supposed to do what I want? If so, please review the code below and let me know where my mistake is. Relevant libraries/platform: Ubuntu 8.04, Ruby 1.8.6, wxWidgets 2.8.9 (deb from the apt.wxwidgets.org repository),...