How do you want convince any external application to send any command after doubleclick? PSPad is able to use command line to search file, but I am not able modify e.g.Sumatra to implment doubleclick action
See the PSPad help chapture related to command line -- <https://forum.pspad.com/read.php?2,78962,78963> PSPad freeware editor https://www.pspad.com
