PPCCloseSync

Close a PPC port

#include <PPCToolbox.h> PPC Toolbox

PPCClosePBPtr pb; Pointer to PPC parameter block

Boolean async; if TRUE, use asynchronous communications

returns Error Code; 0=no error

On entry A0: pointer to a parameter block

D0: selector (9)

On exit D0: result code

Parameter block

Æ 12 ioCompletion long address of a completion routine

¨ 16 ioResult short result code

Æ 38 portRefNum short port reference number of port to close

You use the PPCClose function to close the port specified by the

port reference number.

If your application calls this function asynchronously, you must specify in

the ioCompletion field either the address of a completion routine or NIL. If

ioCompletion is NIL, you should poll the ioResult field of the

PPC parameter block (from your application's main event loop) to determine

whether the PPC Toolbox has completed the requested operation. A value in

the ioResult field other than 1 indicates that the call is complete. Note that it is

unsafe to poll the ioResult field at interrupt time since the PPC Toolbox may

be in the process of completing a call.

The portRefNum field specifies the PPC port identifier of the port to close.

The port reference number must be a valid port reference number returned

from a previous call to the PPCOpen function.

Returns: an operating system Error Code.

noErr (0) No error

notInitErr (-900) PPC Toolbox has not been initialized yet

noPortErr (-903) Bad port reference number

noGlobalsErr (-904) System unable to allocate memory, critical error

Referenced by (4):