ConfigurePortUI function

A port monitor UI DLL's ConfigurePortUI function obtains port configuration information from the user and sends it to the port monitor server DLL.


BOOL WINAPI pfnConfigurePortUI(
  _In_opt_ PCWSTR pszServer,
  _In_     HWND   hWnd,
  _In_     PCWSTR pszPortName



Caller-supplied pointer to a string representing a server name, or NULL if the printer is local. (The port monitor can ignore this parameter.)


Caller-supplied handle of the window that should be used as the parent for dialog boxes. If NULL, no dialog boxes should be displayed.


Caller-supplied pointer to a string representing the name of the port to be configured.

Return Value

If the operation succeeds, the function should return TRUE. Otherwise it should return FALSE. If the operation is unsupported, or is canceled by the user (either by selecting CANCEL or by selecting OK without changing configuration parameters), the function should call SetLastError(ERROR_CANCELLED), then return FALSE.


Port monitor UI DLLs are required to define a ConfigurePortUI function and include the function's address in a MONITORUI structure.

The client's spooler calls ConfigurePortUI from within its ConfigurePort function (described in the Microsoft Windows SDK documentation). The arguments received by ConfigurePortUI are the arguments received by ConfigurePort.

The function should perform the following operations:

  1. Call OpenPrinter, specifying a printer name with the following format:

    where ServerName and PortName are the server and port names received as ConfigurePortUI function arguments.

    The call to OpenPrinter requires a PRINTER_DEFAULTS structure, which is described in the Windows SDK documentation. The structure's DesiredAccess member must be set to SERVER_ACCESS_ADMINISTER. Its pDatatype and pDevMode members can be NULL.

    This call causes the print monitor server DLL's XcvOpenPort function to be called.

  2. Obtain port configuration parameters from the user by displaying a dialog box.
  3. Call XcvData one or more times, specifying customized data name strings, to send each configuration parameter to the server DLL. Each XcvData call causes the server's XcvDataPort function to be called.
  4. Call ClosePrinter, specifying the handle received from OpenPrinter. This causes the server DLL's XcvClosePort function to be called.


Target Platform Desktop
Header winsplp.h (include Winsplp.h)
Library NtosKrnl.exe

See Also