if(mIsDoingPrinting==PR_TRUE){ *aPrintable = PR_FALSE; } else { *aPrintable = PR_TRUE; }
*aPrintable = !mIsDoingPrinting;
DocumentViewerImpl::GetPrintable(PRBool *aPrintable) {  NS_ENSURE_ARG_POINTER(aPrintable);    if(mIsDoingPrinting==PR_TRUE){    *aPrintable = PR_FALSE;  } else {    *aPrintable = PR_TRUE;  }  return NS_OK;}