srv_pfieldex (Extended Stored Procedure API)

重要提示：
后续版本的 Microsoft SQL Server 将删除该功能。请不要在新的开发工作中使用该功能，并尽快修改当前还在使用该功能的应用程序。 Use CLR integration instead.

Returns a pointer to data containing the requested SRV_PROC field.

语法

void *srv_pfieldex(SRV_PROC * 
srvproc
, int 
field
, int * 
len
);

Arguments

• srvproc
  Is a pointer to the SRV_PROC structure that is the handle for a particular client connection. The structure contains information the Extended Stored Procedure API library uses to manage communication and data between the application and the client.

• field
  Specifies the srvproc field to return.

  Field	Description	Return-type
  SRV_MSGLCID	Current session message LCID.	ULONG*
  SRV_INSTANCENAME	Instance name (if named); otherwise, returns NULL.	WCHAR*

• len
  Is a pointer to an int variable that contains the length of the returned field value in bytes. If len is NULL, the length is not returned. When NULL is returned *len is set to 0.

Returns

A pointer to data whose type depends on field. NULL is returned when len is NULL or srvproc is NULL. If the field is unknown, NULL is returned. When NULL is returned *len is set to 0.

安全说明：
The buffer returned from the server should be read only. Otherwise, the server state may be corrupted.

备注

Security Note   You should thoroughly review the source code of extended stored procedures, and you should test the compiled DLLs before you install them on a production server. For information about security review and testing, see this Microsoft Web site.