Here is an example:

BREAK ON

$sDir="D:\TEMP"

$sFile=DIR($sDir)
While $sFile
        If Not (16 & GetFileAttr($sDIR+"\"+$sFile))
                If Not GetFileSize($sDir+"\"+$sFile)
                        "File "+$sDir+"\"+$sFile+" is empty"+@CRLF
                EndIf
        EndIf
        $sFile=DIR()
Loop