How can I find out the value of $(ProjectDir)?

To find out what it is right now (rather than at build time, where it may be different depending on what is going on):

  • right click on your project in the Solution Explorer, select Properties
  • select the Build Events tab
  • click the Edit pre-build or Edit post-build button, either is fine
  • in the window that pops up, click the Macros button
  • scroll down the list till you find ProjectDir, in the next pane is its actual value

Do a pre/post build step.

Example:

echo $(ProjectDir)