You can already do this by editing JPEGView.ini and adding an entry to "Open with menu commands":
OpenWith0="Cmd: '"Explorer.exe" /select,%filename%' Menuitem: 'Show in Folder [...]' Flags: 'ShellExecute'"
This will make explorer.exe to open in the source folder with the current image selected. It won't make a new entry on the JPEGView main context menu but I do think it's already a bit cluttered.
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with that I meant a "show source folder" in Explorer.
You can already do this by editing JPEGView.ini and adding an entry to "Open with menu commands":
OpenWith0="Cmd: '"Explorer.exe" /select,%filename%' Menuitem: 'Show in Folder [...]' Flags: 'ShellExecute'"
This will make explorer.exe to open in the source folder with the current image selected. It won't make a new entry on the JPEGView main context menu but I do think it's already a bit cluttered.