Is there a command line you use to compile?
According to this:
Graphviz: How to go from .dot to a graph?
You use dot.exe
to compile?
You can set something like this up using the Run command in Notepad and bind it to a shortcut key.
dot -Tps "$(FULL_CURRENT_PATH)" -o outfile.ps
Assuming this is your compile command, what is your 'view' command? You should be able to put them into a batch file and call the batch file. In fact it would to describe each of the command line processes, what files they should create and how they are used and you should be able to chain it all up and show any text output in Notepad++ and launch a viewer if required, all using the Run menu or the Plugins\NPPExec
menu