While viewing a file, you may highlight some text and then select "Open Selection in V" from the File menu. The selection will be treated as a file name, and if it exists, will be viewed by V.
Alternatively, you can simply right-click on any part of the file name (without having to highlight anything) and then select "Open Selection in V". Note that this will only work if the file name does not contain any spaces. If it does, you will need to highlight the entire file name.