_PRO_FILE_
This variable contains the path to the project file in use.
For example, the following line causes the location of the project file to be written to the console:
message($$_PRO_FILE_)
_PRO_FILE_PWD_
This variable contains the path to the directory containing the project file in use.
For example, the following line causes the location of the directory containing the project file to be written to the console:
message($$_PRO_FILE_PWD_)