DM_INACTIVE_PRESENT_FLAG
param->flags &= ~DM_INACTIVE_PRESENT_FLAG;
param->flags |= DM_INACTIVE_PRESENT_FLAG;
param->flags &= ~DM_INACTIVE_PRESENT_FLAG;
param->flags &= ~DM_INACTIVE_PRESENT_FLAG;
param->flags |= DM_INACTIVE_PRESENT_FLAG;
param->flags &= ~DM_INACTIVE_PRESENT_FLAG;