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  • How to print WPF FlowDocument within local report?

    - by Thorsten Dittmar
    Hi, in one of our applications we're using alocal RDLC-report (displaying using a ReportViewer control) to print some tables and text entered by the user. We'd like to give the user the ability of formatting the text. I thought I might use the respective WPF controls (embedded into the Windows Forms application) to make things easy. Question is: how do I print the resulting FlowDocument within the local report? Is this possible at all? Thanks for any advice, Thorsten

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  • How would the optimal Emacs-keyboard look like?

    - by Thorsten
    Emacs is a historic piece of software. It promises outstanding productivity for keyboard wizards that really want to explore it's power. The effective use of the keyboard is key to Emacs productivity, but the keyboard hardware has changed a lot since the old days, so many modern Emacs users are struggling with weird 'Emacs chords' on their Windows/IBM keyboards. If one would design a keyboard that is entirely focused on the needs of Emacs users - how would it look like? I assume the following: the standard keybindings of Emacs are accepted, redefinitions are rare exceptions we are only talking about QWERTY keyboards (including regional variations like QWERTZ) we are only considering users applying the (10 fingers) touch typing system. the question is not only about remapping the keys of existing keyboards (perfectly possible on Linux with .xmodmap and on Windows with keytweak, for example) - think about the perfect keyboard-hardware you would like to see on your desk while hacking in Emacs all day long. Please tag your answer with your locale, i.e. [en] or [de], so that everybody knows what regional layout you are using. I will answer my own question below, to show you the results of some investigation and experimentation, but I really would like to read about different approaches and their pro's and con's. The emacswiki has a somehow related page with a lot of links (http://www.emacswiki.org/emacs/RepeatedStrainInjury), but here it's about optimal keyboard design for maximal productivity, assuming avoidance of RSI as a byproduct.

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  • What are the reasons why Clojure is hyped and PicoLisp widely ignored?

    - by Thorsten
    I recently discovered the Lisp family of programming languages, and it's definitely one of the more diverse and widespread families in the programming language world. I like Elisp because that most wonderful tool Emacs is an Elisp interpreter. But I was looking for one more Lisp dialect to learn and thought Clojure would be the obvious choice nowadays - until I discovered the well hidden gem PicoLisp. That must be the most intelligent programming environment I have ever seen, like taking the best ideas from Lisp and Smalltalk and adding performance and practicability - and the beauty of parsimony. There is even an Emacs-mode for it. PicoLisp must be the productivity world champion when it comes to building business applications with database and web-client - and that's a very common task. It seems that throwing more and more hardware cores at your PicoLisp application makes it faster and faster, and the database is very performant anyway. However, reactions to PicoLisp in in general mailing-lists etc. are almost hostile (envy?), and there is absolutely no hype and very little publicity (ie not one book published). Are there real justified reasons for this (except the vast amount of java-libs accessible by Clojure, I know that one)? Or is the mainstream it getting wrong again (see C vs Lisp, Java vs Smalltalk, Windows vs Linux) and will come to the conclusion 10 years later that the JVM was good as in between solution, but a really fast Lisp interpreter on multicore machines is much better and allows much cleaner concepts? PS 1: Please note: I'm not interested in Scheme or any Common Lisp dialect, although they might be fine languages. It's just PicoLisp vs Clojure. PS 2: another thing I like about PicoLisp is its similarity to Elisp in certain aspects (both are descendants from MacLisp?) - it's easier to learn two similar languages. There is so much "dynamic binding bashing" on the web, but two of the most appealing Lisp applications use it.

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  • IBM Tivoli Network Manager IP Edition - Job does not run

    - by Thorsten Niehues
    Since our network discovery takes too long I tried to split the biggest job into two parts. The two parts use the same Perl script but have a different scope. I copied a Job (Agent) doing the following: Copied the .agnt file Copied the associated perl script The problem is that one or the other job (changes randomly) does not run. The Disco Process will fail eventually. In the log of the job which does not run I see the following error message: Wed Jul 18 08:48:54 2012 Warning: Failed to send on transport layer found in file CRivObjSockClient.cc at line 1293 - Client My_MacTable_Cis is not connected to service Helper How do I fix this problem?

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  • ATI / AMD HIS HD 7870 Graphics card fan speed below 16% / 20% 26%

    - by Thorsten Niehues
    I bought a AMD / ATI HIS HD 7870 to replace my old HD 4870. I noticed that the fan speed does not scale with the temperature: The fan speed does not get below 28% (read from catalyst / automatic fan speed) If I manually change it in the catalyst to 20% then it has the same speed than 28% : about 900-1000 rpm. With HIS iTurbo i manually can change the fan speed below 20%. But I noticed that changing the fan speed below 16% results in 3200 rpm. This is really stupid and annoying since my PC is a ultra silent PC and all fans are running with about 500 rpm when the PC is idle (windows / musik movies, etc.) Is there any way to change the fan speed to a reasonable speed like 500 rpm by software or hardware adapters (I really don't like to put a poti between the 12V line)

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  • Visual Studio 2008: Don't deploy SQL Server Compact 3.5 when debugging

    - by Thorsten Dittmar
    Hi, I'm using VS2008 to create a Compact Framework application for a Windows CE 5.0 device (Datalogic Kyman). I'm using SQL Server Compact 3.5 in my application. However, I'm debugging on a Kyman that still has Windows CE 4.2 installed (attached via USB using Mobile Device Center). My problem: VS2008 does not recognize that SQL Server Compact is already installed on the device and asks me to install SQL Server Compact every time I'm running my application from the IDE. The installer shows me a warning about the SQL Server Compact CAB file not being suitable for this device, but installation works without errors, also the application works without errors. I've unchecked the box "Always deploy latest .NET version" (don't know what it's called in English exactly, using German VS2008), but that doesn't help. How can I tell Visual Studio not to install the SQL Server before launching my application every time?

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  • C#: How to set AsyncWaitHandle in Compact Framework?

    - by Thorsten Dittmar
    Hi, I'm using a TcpClient in one of my Compact Framework 2.0 applications. I want to receive some information from a TCP server. As the Compact Framework does not support the timeout mechanisms of the "large" framework, I'm trying to implement my own timeout-thing. Basically, I want to do the following: IAsyncResult result = client.BeginRead(buffer, 0, size, ..., stream); if (!result.AsyncWaitHandle.WaitOne(5000, false)) // Handle timeout private void ReceiveFinished(IAsyncResult ar) { NetworkStream stream = (NetworkStream)ar.AsyncState; int numBytes = stream.EndRead(ar); // SIGNAL IASYNCRESULT.ASYNCWAITHANDLE HERE ... HOW?? } I'd like to call Set for the IAsyncResult.AsyncWaitHandle, but it doesn't have such a method and I don't know which implementation to cast it to. How do I set the wait handle? Or is it automatically set by calling EndRead? The documentation suggests that I'd have to call Set myself... Thanks for any help!

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  • Why doesn't every class in the .Net framework have a corresponding interface?

    - by Thorsten Lorenz
    Since I started to develop in a test/behavior driven style, I appreciated the ability to mock out every dependency. Since mocking frameworks like Moq work best when told to mock an interface, I now implement an interface for almost every class I create b/c most likely I will have to mock it out in a test eventually. Well, and programming to an interface is good practice, anyways. At times, my classes take dependencies on .Net classes (e.g. FileSystemWatcher, DispatcherTimer). It would be great in that case to have an interface, so I could depend on an IDispatcherTimer instead, to be able to pass it a mock and simulate its behavior to see if my system under test reacts correctly. Unfortunately both of above mentioned classes do not implement such interfaces, so I have to resort to creating adapters, that do nothing else but inherit from the original class and conform to an interface, that I then can use. Here is such an adapter for the DispatcherTimer and the corresponding interface: using System; using System.Windows.Threading; public interface IDispatcherTimer { #region Events event EventHandler Tick; #endregion #region Properties Dispatcher Dispatcher { get; } TimeSpan Interval { get; set; } bool IsEnabled { get; set; } object Tag { get; set; } #endregion #region Public Methods void Start(); void Stop(); #endregion } /// <summary> /// Adapts the DispatcherTimer class to implement the <see cref="IDispatcherTimer"/> interface. /// </summary> public class DispatcherTimerAdapter : DispatcherTimer, IDispatcherTimer { } Although this is not the end of the world, I wonder, why the .Net developers didn't take the minute to make their classes implement these interfaces from the get go. It puzzles me especially since now there is a big push for good practices from inside Microsoft. Does anyone have any (maybe inside) information why this contradiction exists?

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  • What directories do the different Application SpecialFolders point to in WindowsXP and Windows Vista

    - by Thorsten Lorenz
    Namely I have: Environment.SpecialFolder.ApplicationData Environment.SpecialFolder.CommonApplicationData Environment.SpecialFolder.LocalApplicationData I am unclear as to were these point to in Windows XP and/or Windows Vista. What I found so far is that the ApplicationData points to the ApplicationData Folder for the current user in XP and the roaming application data folder in Vista. I would also like to know if there are general guidelines on when to use which.

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  • Correct way of using/testing event service in Eclipse E4 RCP

    - by Thorsten Beck
    Allow me to pose two coupled questions that might boil down to one about good application design ;-) What is the best practice for using event based communication in an e4 RCP application? How can I write simple unit tests (using JUnit) for classes that send/receive events using dependency injection and IEventBroker ? Let’s be more concrete: say I am developing an Eclipse e4 RCP application consisting of several plugins that need to communicate. For communication I want to use the event service provided by org.eclipse.e4.core.services.events.IEventBroker so my plugins stay loosely coupled. I use dependency injection to inject the event broker to a class that dispatches events: @Inject static IEventBroker broker; private void sendEvent() { broker.post(MyEventConstants.SOME_EVENT, payload) } On the receiver side, I have a method like: @Inject @Optional private void receiveEvent(@UIEventTopic(MyEventConstants.SOME_EVENT) Object payload) Now the questions: In order for IEventBroker to be successfully injected, my class needs access to the current IEclipseContext. Most of my classes using the event service are not referenced by the e4 application model, so I have to manually inject the context on instantiation using e.g. ContextInjectionFactory.inject(myEventSendingObject, context); This approach works but I find myself passing around a lot of context to wherever I use the event service. Is this really the correct approach to event based communication across an E4 application? how can I easily write JUnit tests for a class that uses the event service (either as a sender or receiver)? Obviously, none of the above annotations work in isolation since there is no context available. I understand everyone’s convinced that dependency injection simplifies testability. But does this also apply to injecting services like the IEventBroker? This article describes creation of your own IEclipseContext to include the process of DI in tests. Not sure if this could resolve my 2nd issue but I also hesitate running all my tests as JUnit Plug-in tests as it appears impractible to fire up the PDE for each unit test. Maybe I just misunderstand the approach. This article speaks about “simply mocking IEventBroker”. Yes, that would be great! Unfortunately, I couldn’t find any information on how this can be achieved. All this makes me wonder whether I am still on a "good path" or if this is already a case of bad design? And if so, how would you go about redesigning? Move all event related actions to dedicated event sender/receiver classes or a dedicated plugin?

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  • Why does clearing an SQLite database not reduce its size?

    - by Thorsten Lorenz
    I have an SQLite database. I created the tables and filled them with a considerable amount of data. Then I cleared the database by deleting and recreating the tables. I confirmed that all the data had been removed and the tables were empty by looking at them using SQLite Administrator. The problem is that the size of the database file (*.db3) remained the same after it had been cleared. This is of course not desirable as I would like to regain the space that was taken up by the data once I clear it. Did anyone make a similar observation and/or know what is going on? What can be done about it?

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  • C#: Access 32-bit/64-bit DLL depending on platform

    - by Thorsten Dittmar
    Hi, we use a self-written 32bit C++ DLL from our C# applications. Now we've noticed that when the C# applications are run on a 64bit system, the 64bit runtime is automatically used and of course the 32bit DLL can not be accessed from the 64bit runtime. My question is: is there a way of using the 32bit DLL? If not, if I created a 64bit version of the DLL, would it be easily possible to let the application choose which one to P/Invoke to? I'm thinking of creating two helper classes in C#: One that imports the functions from the 32bit DLL and one that imports from the 64bit DLL, then creating a wrapper class with one function for each imported function that calls either the 32bit importer or the 64bit importer depending on the "bittyness" of the OS. Would that work? Or is there another easy way to do things?

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  • In app purchase on iphone.: How to receive your available products *before* someone may be able to b

    - by Thorsten S.
    Currently I am loading my supported products from a plist and after that I send a SKProductsRequest to guarantee that my SKProducts are still valid. So I set up the request, start it and get the response in: (void)productsRequest:(SKProductsRequest *)request didReceiveResponse:(SKProductsResponse *)response Now, so far all functions correctly. Problem: From calling the request until receiving the response it may last several seconds. Until that my app is already loaded and the user may be able to choose and buy a product. But because no products have been received, the available products are not in sync with the validated products - unlikely, but possible error. So my idea is to wait until the data is loaded and only continue when the list is validated. (Just a few seconds waiting...). I have a singleton instance managing all products. + (MyClass *) sharedInstance { if (!sharedInstance) sharedInstance = [MyClass new]; // Now wait until we have our data [condition lock]; while (noEntriesYet) // is yes at begin [condition wait]; [condition unlock]; return sharedInstance; } - productsRequest: didReceiveResponse: { [condition lock]; // I have my data noEntriesYet = false; [condition signal]; [condition unlock]; } Problem: The app freezes. Everything works fine if didReceiveResponse is completed before the sharedInstance is queried. There are different threads, the lock is working if wait is reached during didReceiveResponse, everything fine. But if not, didReceiveResponse is never called even if the request was sent. The lock is released, everything looks ok. I have tried to send the product request in a separate NSThread, with NSOperationQueue...without avail. Why ? What is happening ? How to solve the problem ?

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  • Looking for Bugtracker with specific features

    - by Thorsten Dittmar
    Hi, we're looking into bugtracking systems at our firm. We're quite small (4 developers only). On the other hand we have quite a large number of customers we develop individual software for. Most software is built explicitly for one customer, apart from two or three standard tools we ship. To make support easier for us (and to avoid being interrupted by phone calls all the time) we're looking for a bugtracker that must support a specific set of features. We want the customers to report bugs/feature/change requests themselves and be notified about these reports by email. Then we'd like to track what we've done and how much time it took, notifying the customer about that per email (private notes for just us must be possible). At the end of the month we'd like to bill all closed reports according to the time it took to solve/implement them. The following must be possible: It must have a web based interface where the users must log in with credentials we provide. The users must not be able to create accounts themselves/we must be able to turn off such a feature. We must be able to configure projects and assign customer logins to these projects. The customers must only see projects they are assigned to, not any other projects. Also, customers must not "see" other customers. We would name the projects, so that standard tools are listed as separate projects for each customer. A monthly report must be available that we can use to get information about the requests we worked on per customer. I'd like to introduce some standard product like Mantis (I've played with that a little, but didn't quite figure out whether it provides all the features I listed above). The product should be Open Source and work on a XAMPP Windows Server 2003 environment. Does anybody have any good suggestions?

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  • Parsing language for both binary and character files

    - by Thorsten S.
    The problem: You have some data and your program needs specified input. For example strings which are numbers. You are searching for a way to transform the original data in a format you need. And the problem is: The source can be anything. It can be XML, property lists, binary which contains the needed data deeply embedded in binary junk. And your output format may vary also: It can be number strings, float, doubles.... You don't want to program. You want routines which gives you commands capable to transform the data in a form you wish. Surely it contains regular expressions, but it is very good designed and it offers capabilities which are sometimes much more easier and more powerful. Something like a super-grep which you can access (!) as program routines, not only as tool. It allows: joining/grouping/merging of results inserting/deleting/finding/replacing write macros which allows to execute a command chain repeatedly meta-grouping (lists-tables-hypertables) Example (No, I am not looking for a solution to this, it is just an example): You want to read xml strings embedded in a binary file with variable length records. Your tool reads the record length and deletes the junk surrounding your text. Now it splits open the xml and extracts the strings. Being Indian number glyphs and containing decimal commas instead of decimal points, your tool transforms it into ASCII and replaces commas with points. Now the results must be stored into matrices of variable length....etc. etc. I am searching for a good language / language-design and if possible, an implementation. Which design do you like or even, if it does not fulfill the conditions, wouldn't you want to miss ? EDIT: The question is if a solution for the problem exists and if yes, which implementations are available. You DO NOT implement your own sorting algorithm if Quicksort, Mergesort and Heapsort is available. You DO NOT invent your own text parsing method if you have regular expressions. You DO NOT invent your own 3D language for graphics if OpenGL/Direct3D is available. There are existing solutions or at least papers describing the problem and giving suggestions. And there are people who may have worked and experienced such problems and who can give ideas and suggestions. The idea that this problem is totally new and I should work out and implement it myself without background knowledge seems for me, I must admit, totally off the mark.

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  • BlackBerry 10 sera lancé le 30 janvier 2013, le joker de RIM sortira avec deux modèles de smartphones

    BlackBerry 10 en test auprès de 50 opérateurs dans le monde l'OS mobile franchit un cap crucial le rapprochant de son lancement début 2013 Même si la date de sortie officielle de BlackBerry 10 n'est pas encore connue, l'OS a franchi un cap crucial dans son cycle de développement, le rapprochant de sa période de lancement. Thorsten Heins, le PDG de RIM a annoncé que l'OS mobile a été mis à la disposition de 50 opérateurs à travers le monde afin que ceux-ci puissent procéder à des tests. Cette étape importante pour le PDG du constructeur canadien signifie que la firme pourra tenir son engagement de lancer BlackBerry 10 durant le premier trimestre de l'année prochaine. ...

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  • SAP Mobile Plateform : le nouvel outil pour le développement mobile multiplateforme, Windows 8 aussi en ligne de mire

    SAP Mobile Plateform : le nouvel outil pour développer des applications mobiles Multiplateformes et connectées aux services de SAP, Windows 8 aussi en ligne de mire SAP a pris le virage de la mobilité à plusieurs niveaux. En portant ses solutions sur tablettes et smartphones. En créant de nouvelles applications dédiées aux usages nomades (regroupées dans son SAP Store). Et en étoffant la plateforme commune sur laquelle s'appuient ces couches applicatives. Le rachat de Sybase est bien évidemment au coeur de cette stratégie. Notamment avec Sybase Unwired Plateform. Cette plateforme commune ? une véritable « fondation », comme l'appelle Thorsten Stephan, vice-président ...

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  • BlackBerry 10 en test auprès de 50 opérateurs, l'OS mobile franchit un cap crucial le rapprochant de son lancement début 2013

    BlackBerry 10 en test auprès de 50 opérateurs dans le monde l'OS mobile franchit un cap crucial le rapprochant de son lancement début 2013 Même si la date de sortie officielle de BlackBerry 10 n'est pas encore connue, l'OS a franchi un cap crucial dans son cycle de développement, le rapprochant de sa période de lancement. Thorsten Heins, le PDG de RIM a annoncé que l'OS mobile a été mis à la disposition de 50 opérateurs à travers le monde afin que ceux-ci puissent procéder à des tests. Cette étape importante pour le PDG du constructeur canadien signifie que la firme pourra tenir son engagement de lancer BlackBerry 10 durant le premier trimestre de l'année prochaine. ...

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