ClosePort function (winsplp.h)

Article
02/22/2024

A language or port monitor's ClosePort function closes a printer port.

Syntax

BOOL ClosePort(
  _In_ HANDLE hPort
);

Parameters

[in] hPort

Caller-supplied pointer to a port handle.

Return value

If the operation succeeds, the function should return TRUE. Otherwise it should return FALSE.

Remarks

Language monitors and port monitor server DLLs are required to define a ClosePort function and include the function's address in a MONITOR2 structure.

The handle received as the function's hPort argument is the port handle that the monitor's OpenPort or OpenPortEx function supplied.

The ClosePort function should close the port by making the received port handle invalid. It should also free all system resources that were allocated by the monitor's OpenPort or OpenPortEx function.

Requirements

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