Move some code to the designer and clean up some code
Stop running the search thread when the form is closed; fixes an issue where the application would not be properly interrupted (so still running in the background) when it was closed while it was searching
Get rid of the MsgBoxCheck dll and replace the usage of it by a normal MessageBox
Fix an issue where the MainForm_KeyDown event would never be fired, thus resulting in the Escape and Enter key not doing anything special
Implement settings that are saved for the last used X (all textboxes)
Hack-fix a bug where selecting an item from the autocomplete list would automatically make the application start searching in the directory