My drop down list (history) in each of the windows is getting rather large. I have been looking for a way to delete that history but have come up with nothing. Has anyone been able to delete that history list in this app?

Thanks in advance for your help.

UltraCompare has yet (v8.10.0.1014) no "Clear History" button like UltraEdit. Therefore histories must be deleted manually. If configuration is stored in registry as by default, copy following lines into a plain ASCII text file and save it for example with name Clear_UC_History.reg. Then double click on this registry file to import it which in real just deletes the history keys of UC Professional in registry for the current user.

REGEDIT4

[-HKEY_CURRENT_USER\Software\IDM Computer Solutions\UltraCompare Pro\UltraCompare Professional\m_slHistory1]

[-HKEY_CURRENT_USER\Software\IDM Computer Solutions\UltraCompare Pro\UltraCompare Professional\m_slHistory2]

[-HKEY_CURRENT_USER\Software\IDM Computer Solutions\UltraCompare Pro\UltraCompare Professional\m_slHistory3]

[-HKEY_CURRENT_USER\Software\IDM Computer Solutions\UltraCompare Pro\UltraCompare Professional\m_slHistory1_dir]

[-HKEY_CURRENT_USER\Software\IDM Computer Solutions\UltraCompare Pro\UltraCompare Professional\m_slHistory2_dir]

[-HKEY_CURRENT_USER\Software\IDM Computer Solutions\UltraCompare Pro\UltraCompare Professional\m_slHistory3_dir]

If configuration setting Use registry for settings (not INI file) is not checked, the histories are stored in file %appdata%\IDMComp\UltraCompare\uc.ini. Open this INI file while UC is not running and delete completely the sections

[m_slHistory1]

[m_slHistory2]

[m_slHistory3]

[m_slHistory1_dir]

[m_slHistory2_dir]

[m_slHistory3_dir]

2013-02-10: Since version 8.50 of UltraCompare Professional it is possible to clear a history list by opening the drop down history list and clicking on last item <clear history>.