Port monitor server DLL functions
The following table lists the functions that a port monitor server DLL must define:
| Function name | Description |
|---|---|
| DllEntryPoint | DLL entry point, typically called DllMain. |
| ClosePort | Closes a port if there are no printers connected to it. |
| EndDocPort | Performs end-of-print-job tasks on a port. |
| EnumPorts | Enumerates the ports available for printing on a server. |
| InitializePrintMonitor2 | Initializes the print monitor and returns an instance handle. |
| OpenPort | Opens a printer port. |
| OpenPortEx | Opens a printer port. (Language monitor only) |
| ReadPort | Reads data from a printer port. |
| StartDocPort | Performs the tasks required to start a print job on a port. |
| WritePort | Writes data to a printer port. |
| XcvClosePort | Closes a port after port management is complete. |
| XcvDataPort | Handles port management tasks. |
| XcvOpenPort | Opens a port for management purposes. |
The following port monitor server DLL functions are optional:
| Function name | Description |
|---|---|
| GetPrinterDataFromPort | Sends an I/O control code to a port driver and returns the result. |
| SendRecvBidiDataFromPort | Supports bidirectional communication between an application and a printer or print server. |
| SetPortTimeOuts | Sets a time-out value on an open port. |
| Shutdown | Deletes a monitor instance. This function is required for cluster support. |