To my surprise, when I installed Wakan, I found an option under the Characters menu to view clipboard !
What this means is that if you copy the content of a web page, say simplified Japanese news, the Kanji in found in that "clipboard content" are displayed in a matrix of boxes in a Wakan window.
A click on a kanji displays a customizable view of that kanji as a dictionary entry (and that single kanji view can also be pinned or anchored to the right so that it is not a popup, but rather another pane in the tool.)
Quite cool for a free tool !
Now back to learning the too-many-features of the Microsoft IME Japanese keyboard option for WIndows ...