Notes on Using This Function

  1. An EHLLAPI application can be connected to multiple presentation space windows at the same time. The application can go back and forth between the connected presentation space windows without having to disconnect. For example, if an application is connected to presentation space windows A, B, and C, the application can access all of A, B, and C at the same time, and the other applications cannot access A, B, or C.
  2. A Connect Window Services function is sufficient for the process. However, each thread that requests a Connect Window Services must have a corresponding Disconnect Window Services (102), or one of the threads must issue a Reset System (21), which affects all threads and disconnects any remaining connections.