Sometimes it might be convenient to save the current log window contents to a file, e.g. to mail it to the developers as part of a bug report. There are two ways to achieve this in KWatchGnuPG:
First, you can choose File → (or the corresponding toolbar icon) to save the complete log window contents to a file. You will be prompted to specify a save file location.
Second, you can select the interesting lines with normal left-mouse selection and paste them into a word processor or mail user agent, just like any other text. You should make sure, though, that lines are not broken, since this reduces the readability of the log.