Check GraphVIZ installed on windows

How to check version and path of GraphViz installed on Windows? What command on command prompt is used or Registry location to find them?

How do I know what version of Graphviz I have?

After installing Graphviz, make sure that its bin/ subdirectory containing the dot layout command for rendering graph descriptions is on your systems' PATH (sometimes done by the installer; setting PATH on Linux, Mac, and Windows): On the command-line, dot -V should print the version of your Graphiz installation.

How do I open a dot file in graphviz?

For windows: dl the msi and install; Find gvedit.exe in your programs list; Open . dot file in question; Click running person on toolbar; Go to graph -> settings ; change Output file type to file type of your liking and press ok..

Run "dot -V" from the command prompt. If GraphViz is installed and configured you'll get it's version.