Loads the correct data segment register for the RT process that called SetRtInterruptHandler. This allows the interrupt handler to have access to static data that belongs to that process.

BOOLEAN EnterRtInterrupt(
    WORD wLevel
);

Parameters

wLevel

Encoded interrupt level

Remarks

You must call GetRtInterruptLevel to determine that value of wLevel. You cannot look up a global variable that contains wLevel until EnterRtInterrupt has been called.

Return Values

TRUE

Success

FALSE

To determine the status, call GetLastRtError

Status

E_OK 0x0000

No exceptional conditions occurred.

E_CONTEXT 0x0005

The specified level is not initialized.

Requirements