We tried this fix and it seems to be causing further problems. Our implementation is: try { final Doc doc = new SimpleDoc (docBytes, javax.print.DocFlavor.BYTE\_ARRAY.AUTOSENSE, null); AccessController.doPrivileged(new PrivilegedExceptionAction() { public Object run() throws PrintException { DocPrintJob printerJob = selectedPrinter.getPrintService().createPrintJob();; PrintRequestAttributeSet aset = new HashPrintRequestAttributeSet(); printerJob.print(doc, aset); result.setStatus("SUCCESS"); return null; } }); } catch (Exception e) { e.printStackTrace(); result.setStatus("FAILED"); } We're using the doPrivileged call with PrivilegedExceptionAction so that we can report the failure to the server to be reported. The problem is we are now seeing in the production logs that a small percentage of the print jobs fail with PrivilegedActionException, which we never saw before. We have not been able to reproduce this in our test environments, so in fact we don't really know whether the previous versions were failing or not - maybe we're just seeing the exceptions in the logs now, but they were always there.

I can think of 2 ways to do what you want and I've used both methods, although there may be other ways. 1) Write a parser and an evaluation "engine" class. The last time I did that I based it on the Forth system so it's real fast, but I converted the system to regular algebraic rather than reverse polish notation. I'd post a link, but the last time I did that I wrote it in Pascal, not C#, and I don't have a link to any code handy. 2) Use the CodeDomProvider class to write the function in the .NET language of your choice. For users I generally stick with VB since users seem most familiar with that. I've also used JScript, C#, F# in addition to VB. My article ScriptEngine - User Defined Calculations in C#, VB, JScript and F#[^] provides an example of how to do this, but you will need to modify for your own purposes. Note, that as mentioned in some of the comments, there doesn't appear to be a good way to ever unload the code if you have a long running application. In either case you can allow more than just a simple formula, depending on how you limit things. You'll still need to evaluate the function for all your input values and handle the graphics. Perhaps someone else will have additional ideas. Good luck! CQ de W5ALT Walt Fair, Jr., P. E. Comport Computing Specializing in Technical Engineering Software

Well, you see, I'm already doing that, I'm just looking for how to offer users the ability to create their own cards and add them to the game, without needing to get the source, add some classes, and recompile the game. Also, assume here that these users are trusted, I know someone could stick some malicious code in one of these user-created cards if I follow this method ;) Here's some psuedo-code: LinkedList<AbstractCard> lstAllCards = new LinkedList<AbstractCard>(); for each file in directory "user_cards/" { if file is a java class //Maybe just attempt to add it, and catch an exception if it doesn't work { AbstractCard newCard = file.instantiate() //I don't know what to do here lstAllCards.add(newCard); } } From what I've read of reflection, the way to do this might be to try this: AbstractCard newCard = Class.forName(fileName).newInstance(); Also, after reading this, I may want to have the card list be a LinkedList<Class>, not a LinkedList<AbstractCard>, so that I can instantiate new cards at will without having to refer back to these initial instances. Am I on the right track? EDIT: angle brackets weren't showing up for the generics, replaced them with "& lt;" and "& gt";

And if you can get it to work, write an article.

Please don't answer questions until you know the answers. This is just plain wrong on so many levels. Christian Graus - Microsoft MVP - C++ "also I don't think "TranslateOneToTwoBillion OneHundredAndFortySevenMillion FourHundredAndEightyThreeThousand SixHundredAndFortySeven()" is a very good choice for a function name" - SpacixOne ( offering help to someone who really needed it ) ( spaces added for the benefit of people running at < 1280x1024 )

Thanks a bunch for the reply. I tried using the first link, but got confused. The last link seems to be very helpful, almost exactly what I need. Thanks again :D

Ok, thank you. I was just wondering that perhaps there was a function already built into MS C# that would do it for me.

Well classical problems like this are solved by using unmanaged code equivilant to the System.Diagnostics namespace from the win32 api. (Hint: search MSDN) Hope this helps!!;) To follow the path, Walk with the MASTER, See through the MASTER, Be the MASTER!

Ah, sure, because in the paint event, it's been created for you. A lot of .NET classes use static factory methods instead of constructors, that's always something that's good to look for, in that scenario. Christian Graus - Microsoft MVP - C++ "I am working on a project that will convert a FORTRAN code to corresponding C++ code.I am not aware of FORTRAN syntax" ( spotted in the C++/CLI forum )

Umm... I said in my original post that I knew about this. My problem is, it displays the waveform in the entire form. Is there something out there that I can use to do this, or am I going to have to reverse engineer this code to make it myself?

Have you tried searching Google? A quick search found the answer for me. Please do more research next time before posting. Hogan

You can find the keyboard's guid on here: Microsoft.DirectX.DirectInput.SystemGuid.Keyboard In other words, you should create your dxkeyboard object like the following example: Protected mKeyboard As Microsoft.DirectX.DirectInput.Device = Nothing mKeyboard = New Microsoft.DirectX.DirectInput.Device(Microsoft.DirectX.DirectInput.SystemGuid.Keyboard) Sincerilly yours. Manusoftar®

Try Me.Controls.remove(Picturebox name goes here)... :wtf: What a curious mind needs to discover knowledge is noting else than a pin-hole.

Thank you, that worked great!

I was afraid to hear that. Sadly, that is how I am currently doing it. Thanks for the reply.