WSACOMPLETIONTYPE Enumeration

The WSACOMPLETION structure specifies completion notification settings for I/O control calls made to a registered namespace.

Syntax

typedef enum _WSACOMPLETIONTYPE
{
    NSP_NOTIFY_IMMEDIATELY = 0,
    NSP_NOTIFY_HWND,
    NSP_NOTIFY_EVENT,
    NSP_NOTIFY_PORT,
    NSP_NOTIFY_APC
} WSACOMPLETIONTYPE, *PWSACOMPLETIONTYPE, *LPWSACOMPLETIONTYPE;

Remarks

The WSACOMPLETION structure enables callbacks to be provided in any of the following formats, based on the value provided in Type:

Callback Format	Type value
Polling	NSP_NOTIFY_IMMEDIATELY
Window Message	NSP_NOTIFY_HWND
Event	NSP_NOTIFY_EVENT
APC	NSP_NOTIFY_APC
Completion Port	NSP_NOTIFY_PORT

For a blocking function, set the WSACOMPLETION structure to null.

Constants

Constant	Description
NSP_NOTIFY_IMMEDIATELY
NSP_NOTIFY_HWND
NSP_NOTIFY_EVENT
NSP_NOTIFY_PORT
NSP_NOTIFY_APC

Requirements

Header: Declared in winsock2.h.

Library: Use ws2_32.lib.