RegisterSwitchProc

The RegisterSwitchProc function registers an application procedure that will be called whenever the 3270 emulator is about to be switched in or out of memory by the MS-DOS version 5 or Windows task-switching code.

MS-DOS

USHORT FAR RegisterSwitchProc(

ULONG switchProc
);

Parameters

switchProc: A far pointer to the function where task activity will be notified. The function is defined as follows:

VOID FAR PASCAL SwitchProc(

USHORT inOut
);

Parameters

inOut: Zero if emulator is about to be switched out of memory, 1 if emulator is about to be switched back into memory.