swinter.h:

unsigned char SYSCALL SwDocumentGetIsPrinting( C_Object ObjHdl );


swinter.c:

unsigned char SYSCALL SwDocumentGetIsPrinting( C_Object ObjHdl )
{
    if( SvIPCIsConnected() )
    {
        return (unsigned char) pIPCCallFunction( SvIPCGetClient(), 136598,
             ObjHdl , 1, NULL );
    }
    return 0;
}

#pragma code_seg("swinter2","CODE")