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@TheDcoder, Thanks for the reply. Well, I am cooking something interesting for AutoIt. A gui library fpr AutoIt. All heavy works are happening inside the dll. So after creating a window class, I need to transfer the necessary properties from the dll function to autoit. Currently map is in my radar. I am planning to use Scripting.Dictionary also. There are more than 20-25 properties and event name indexes to transfer. Anyhow, I am searching for new ways to do it.

kevinalberts, Welcome to the AutoIt forums. Here is my take on a "clamp" function: - @extended shows whether the passed value has been "clamped": For $i = 1 To 20 ConsoleWrite(_Clamp($i, 5, 15) & " - " & @extended & @CRLF) Next Func _Clamp($iValue, $iMin, $iMax) Local $fClamp = False If $iValue < $iMin Then $iValue = $iMin $fClamp = True ElseIf $iValue > $iMax Then $iValue = $iMax $fClamp = True EndIf Return SetError(0, $fClamp, $iValue) EndFunc I have left @error alone so you can do some initial checking on the passed value to see if it meets your requirements. M23

Missing images you should be able to recreate. Examine the case where all 3 formats exist, look at image parameters (color depth, size, ..., exif data) and resize existing images to the required missing format. I don't get the folder/subfolder logic either.