Sample Language Monitor
Pjlmon.dll is a language monitor that supports bidirectional PJL language support.
For Windows 7, sample source code for Pjlmon.dll is included with the Windows Driver Kit Version 7.1.0 installation download. The sample is located in the \src\print\monitors\pjlmon subdirectory (for example, C:\WinDDK\7600.16385.1\src\print\monitors\pjlmon).
For Windows 8, the sample source code for Pjlmon.dll is available in the pjlmon directory in the Windows Driver Kit (WDK) 8.0 samples archive repo on GitHub.
For Windows 8.1, the sample source code for Pjlmon.dll is available in the pjlmon directory in the Windows Driver Kit (WDK) 8.1 samples archive repo on GitHub.
Note
Sample source code in not available for Pjlmon.dll in the Windows Driver Kit (WDK) 10 samples repo on GitHub.