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  • How to change default image of derived ToolStripButton?

    - by Special Touch
    It seems like a simple task. Create a C# class that derives from ToolStripButton. The derived ToolStripButton should behave exactly the same as the parent class in the designer and the application, except that the default image should be different. Surprisingly just changing the constructor is not sufficient: public CustomToolStripButton() { base.Image = (Image) new Bitmap(typeof(CustomToolStripButton), "CustomImage.bmp"); } When the ToolStripButton is displayed in the designer, the original default image is shown. There must be a simple solution. What could it be?

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  • How do I get the User Entered Value in AjaxControlToolkit ComboBox when the enter key is pressed?

    - by Jason
    The Problem: The user entered value is missing in the .Text attribute of the AjaxControlToolkit ComboBox when the enter key pressed. Also the “on change” events events are not called but I am not using postbacks anyway so I do not care. Example: private void BuildFileListDetails(NHibernateDataProvider _providerM) { int resultsPage = Convert.ToInt32(ddlNavPageNumber.Text); const int RESULTS_PAGE_SIZE = 100; // The cbFileName.Text equals "" Not what user entered string searchFileName= cbFileName.Text; var xrfFiles = _providerM.GetXrfFiles(searchFileName, resultsPage, RESULTS_PAGE_SIZE); gvXrfFileList.DataSource = xrfFiles; gvXrfFileList.DataBind(); } My Solution: I needed to access the AjaxToolkit "ComboBox" imbedded TextBox control's .Text to access the value entered by user. private void BuildFileListDetails(NHibernateDataProvider _providerM) { int resultsPage = Convert.ToInt32(ddlNavPageNumber.Text); const int RESULTS_PAGE_SIZE = 100; string searchFileName; //The Solution: Access the AjaxToolkit "ComboBox" imbedded TextBox control's .Text to access the value entered by user. TextBox textBox = cbFileName.FindControl("TextBox") as TextBox; if (textBox != null) { searchFileName = textBox.Text; //textBox.Text = "User Entered Value" } else { searchFileName = cbFileName.Text; } var xrfFiles = _providerM.GetXrfFiles(searchFileName, resultsPage, RESULTS_PAGE_SIZE); gvXrfFileList.DataSource = xrfFiles; gvXrfFileList.DataBind(); }

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  • XPATH query, HtmlAgilityPack and Extracting Text

    - by Soham
    I had been trying to extract links from a class called "tim_new" . I have been given a solution as well. Both the solution, snippet and necessary information is given here The said XPATH query was "//a[@class='tim_new'], my question is, how did this query differentiate between the first line of the snippet (given in the link above and the second line of the snippet). More specifically, what is the literal translation (in English) of this XPATH query. Furthermore, I want to write a few lines of code to extract the text written against NSE: <div class="FL gL_12 PL10 PT15">BSE: 523395 &nbsp;&nbsp;|&nbsp;&nbsp; NSE: 3MINDIA &nbsp;&nbsp;|&nbsp;&nbsp; ISIN: INE470A01017</div> Would appreciate help in forming the necessary selection query. My code is written as: IEnumerable<string> NSECODE = doc.DocumentNode.SelectSingleNode("//div[@NSE:]"); But this doesnt look right. Would appreciate some help.

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  • How do I create interface methods using .tlb types in VS C++?

    - by Steven
    Background: The .TLB file contains interfaces written in language 'X'. I don't have .h, .idl, .tlh, or any other header files - just the .TLB file. Language 'X' does not export compatible .h, .idl, etc. I use the VS wizard to add an ATL simple object to my ATL project. I want to add a method to the interface of my simple ATL object that uses one of the .TLB defined types for a parameter. // Something like the following in the .idl file: interface ISomeInterface : IUnknown { HRESULT SomeMethod([in] ITypeFromTLB* aVal); // ITypeFromTLB declared in .TLB file. }; How can I do this? I'm hoping for a wizard, or a line in the .idl interface declaration that would bring in the .tlb information. midl's include (no .tlb), import (no tlb), and importlib (library only) don't seem to provide a solution (I need proxy/stub to be working, so I cannot put this inside the library declaration with the importlib command). Thanks.

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  • Implementing arrays using a stack

    - by Zack
    My programming language has no arrays, no lists, no pointers, no eval and no variable variables. All it has: Ordinary variables like you know them from most programming languages: They all have an exact name and a value. One stack. Functions provided are: push (add element to top), pop (remove element from top, get value) and empty (check if stack is empty) My language is turing-complete. (Basic arithmetics, conditional jumps, etc implemented) That means, it must be possible to implement some sort of list or array, right? But I have no idea how... What I want to achieve: Create a function which can retrieve and/or change an element x of the stack. I could easily add this function in the implementation of my language, in the interpreter, but I want to do it in my programming language. "Solution" one (Accessing an element x, counting from the stack top) Create a loop. Pop off the element from the stack top x times. The last element popped of is element number x. I end up with a destroyed stack. Solution two: Do the same as above, but store all popped off values in a second stack. Then you could move all elements back after you are done. But you know what? I don't have a second stack!

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  • Programmatically Set Proxy Address, Port, User, Password throught Windows Registry

    - by Fábio Antunes
    I'm writing a small C# application that will use Internet Explorer to interact with a couple a websites, with help from WatiN. However, it will also require from time to time to use a proxy. I've came across Programmatically Set Browser Proxy Settings in C#, but this only enables me to enter a proxy address, and I also need to enter a Proxy username and password. How can I do that? Note: It doesn't matter if a solution changes the entire system Internet settings. However, I would prefer to change only IE proxy settings (for any connection). The solution has to work with IE8 and Windows XP SP3 or higher. I'd like to have the possibility to read the Proxy settings first, so that later I can undo my changes. EDIT With the help of the Windows Registry accessible through Microsoft.Win32.RegistryKey, i was able to apply a proxy something like this: RegistryKey registry = Registry.CurrentUser.OpenSubKey("Software\\Microsoft\\Windows\\CurrentVersion\\Internet Settings", true); registry.SetValue("ProxyEnable", 1); registry.SetValue("ProxyServer", "127.0.0.1:8080"); But how can i specify a username and a password to login at the proxy server? I also noticed that IE doesn't refresh the Proxy details for its connections once the registry was changed how can i order IE to refresh its connection settings from the registry? Thanks

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  • Multiple synonym dictionary matches in PostgreSQL full text searching

    - by Ryan VanMiddlesworth
    I am trying to do full text searching in PostgreSQL 8.3. It worked splendidly, so I added in synonym matching (e.g. 'bob' == 'robert') using a synonym dictionary. That works great too. But I've noticed that it apparently only allows a word to have one synonym. That is, 'al' cannot be 'albert' and 'allen'. Is this correct? Is there any way to have multiple dictionary matches in a PostgreSQL synonym dictionary? For reference, here is my sample dictionary file: bob robert bobby robert al alan al albert al allen And the SQL that creates the full text search config: CREATE TEXT SEARCH DICTIONARY nickname (TEMPLATE = synonym, SYNONYMS = nickname); CREATE TEXT SEARCH CONFIGURATION dxp_name (COPY = simple); ALTER TEXT SEARCH CONFIGURATION dxp_name ALTER MAPPING FOR asciiword WITH nickname, simple; What am I doing wrong? Thanks!

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  • InstallUtil Publishing WMI Schema to 64 Bit Directory Instead of 32 Bit Directory

    - by Nick
    This is similar to this question, but it doesn't look like a good solution was ever determined, so I'm opening a new one with clarified details. We wrote a .NET service, which among other things, publishes some of the class hierarchy using WMI. On a 64-Bit machine, we are running the 32-bit version of InstallUtil to install the service. It installs successfully, but when the service runs, we receive the following error message when publishing a WMI class using Instrumentation.Publish() DirectoryNotFoundException - (Could not find a part of the path 'C:\Windows\system32\WBEM\Framework\root\MyNamespace\MyService'.) However, this directory does exist in the C:\Windows\syswow64 directory. If we manually copy that directory structure to the system32 directory, then everything works. However, we are looking for automated solution, because we have this packaged up in an MSI which we distribute onto many servers. We have tried running the 64-Bit version of InstallUtil, to see if that would work, however... and this is the really weird part... it gives us an error on install that says Installing WMI Schema: Started An exception occurred during the Install phase. System.IO.DirectoryNotFoundException: Could not find a part of the path 'C:\Windows\system32\WBEM\Framework\root\MyNamespace\MyService.mof'. It looks as if somehow, the WMI installer flipped around. Has anyone else experienced this, or know of a work around?

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  • Generating all unique combinations for "drive ya nuts" puzzle

    - by Yuval A
    A while back I wrote a simple python program to brute-force the single solution for the drive ya nuts puzzle. The puzzle consists of 7 hexagons with the numbers 1-6 on them, and all pieces must be aligned so that each number is adjacent to the same number on the next piece. The puzzle has ~1.4G non-unique possibilities: you have 7! options to sort the pieces by order (for example, center=0, top=1, continuing in clockwise order...). After you sorted the pieces, you can rotate each piece in 6 ways (each piece is a hexagon), so you get 6**7 possible rotations for a given permutation of the 7 pieces. Totalling: 7!*(6**7)=~1.4G possibilities. The following python code generates these possible solutions: def rotations(p): for i in range(len(p)): yield p[i:] + p[:i] def permutations(l): if len(l)<=1: yield l else: for perm in permutations(l[1:]): for i in range(len(perm)+1): yield perm[:i] + l[0:1] + perm[i:] def constructs(l): for p in permutations(l): for c in product(*(rotations(x) for x in p)): yield c However, note that the puzzle has only ~0.2G unique possible solutions, as you must divide the total number of possibilities by 6 since each possible solution is equivalent to 5 other solutions (simply rotate the entire puzzle by 1/6 a turn). Is there a better way to generate only the unique possibilities for this puzzle?

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  • How do functional programming languages work?

    - by eSKay
    I was just reading this excellent post, and got some better understanding of what exactly object oriented programming is, how Java implements it in one extreme manner, and how functional programming languages are a contrast. What I was thinking is this: if functional programming languages cannot save any state, how do they do some simple stuff like reading input from a user (I mean how do they "store" it), or storing any data for that matter? For example - how would this simple C thing translate to any functional programming language, for example haskell? #include<stdio.h> int main() { int no; scanf("%d",&no); return 0; }

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  • I need to create a small HMI/SCADA WPF application that uses WCF

    - by HomeMade
    Hello I have to create a simple app, that will suit as an example of using WPF and WCF for creating HMI screens. I'm not sure what WCF is supposed to do in such application, I guess there must be an OPC server that my application connects to. Does app connect to OPC server using WCF service and does the WCF service reside inside the application or outside? Is WCF service meant to be used only as a connection to OPC server? I'm not yet quite sure which process to simulate, I need something simple. Please, any ideas are welcomed. Thank you

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  • Javascript: Collision detection

    - by jack moore
    Hello, could someone please help me to understand how collision detection works in JS? I can't use jQuery or gameQuery - already using prototype - so, I'm looking for something very simple. Not asking for complete solution, just point me to the right direction. Let's say there's: <div id="ball"></div> and <div id="someobject0"></div> Now the ball is moving (any direction). "Someobject"(0-X) is already pre-defined and there's 20-60 of them randomly positioned like this: #someobject {position: absolute; top: RNDpx; left: RNDpx;} I can create an array with "someobject(X)" positions and test collision while the "ball" is moving... Something like: for(var c=0; c<objposArray.length; c++){ ........ and code to check ball's current position vs all objects one by one.... } But I guess this would be a "noob" solution and it looks pretty slow. Is there anything better?

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  • Porting a piece of Lisp code to Clojure (PAIP)

    - by Robert Brown
    I'm reading Paradigms of Artificial Intelligence Programming (PAIP) by Peter Norvig and I'm trying to write all the code in Clojure rather than common Lisp. However I'm stuck on this piece of code on page 39: (defparameter *simple-grammar* '((sentence -> (noun-phrase verb-phrase)) (noun-phrase -> (Article Noun)) (verb-phrase -> (Verb noun-phrase)) (Article -> the a) (Noun -> man ball woman table) (Verb -> hit took saw liked)) "A grammar for a trivial subset of English.") (defvar *grammar* *simple-grammar*) How can I translate this into Clojure? Thanks.

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  • How do I use an SWT Control to render the content of an SWT/JFace table?

    - by jastram
    I have a JFace TableViewer with an SWT Table, and I would like to custom render the content of some cells. I would like to use an SWT Control to render the cell content. I would prefer to have only one instance of the Control doing the rendering, but if I have to instantiate one for each row, that would be acceptable. Next, the solution MUST be compatible with the ContentProvider/LabelProvider approach (I am using EMF). This means that I cannot use the solution described in Sniplet 126 (http://dev.eclipse.org/viewcvs/index.cgi/org.eclipse.swt.snippets). Next, I though about using custom drawing. But here the catch is, that I have to send individual drawing operations to the graphics context. I was trying to have the Control render the content for me by calling redraw() or print(GC) upon SWT.PaintItem, but that just lead to uncontrollable flickering. At this point, my best guess is to use SWT.PaintItem to do the drawing. This will result in duplicate code, as I already have a Control that can render the content the way I'd like it. I'd like to prevent this redundancy. Any help is appreciated!

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  • Javascript Detect Control Key Held on Mouseup

    - by Michael Mikowski
    I've searched a good deal, and can't seem to find a satisfactory solution. I hope someone can help. While I am using jQuery, I am also writing many thousands of lines of Javascript. So a "pure" javascript solution is just fine. I'm trying to determine if the control key is physically held down on a mouseup event. That's it; there are no other preconditions. Does anyone know how to do this reliably, cross-browser? I've tried storing this in a state variable by noting when the key is pressed and released: // BEGIN store control key status in hash_state $().bind('keydown','ctrl',function( arg_obj_e ){ hash_state.sw_ctrldn = true; console.debug( hash_state.sw_ctrldn ); }); $().bind('keyup','ctrl',function( arg_obj_e ){ hash_state.sw_ctrldn = false; console.debug( hash_state.sw_ctrldn ); }); // END store control key status in hash_state However, this really doesn't work. If you test this using firebug and watch the console, you will see that auto-repeat seems to happen, and the value toggles. I inspected the mouseup event to see if there is anything useful there, but to no avail: var debugEvent = function( arg_obj_e ){ var str = ''; for ( var attr in arg_obj_e ){ str += attr + ': ' + arg_obj_e[attr] + '\n'; } console.debug(str); } Any help would be appreciated.

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  • Java List use through use of JSTL <c:forEach>

    - by Mark Lewis
    Hello If I have a JSF backing bean return an object of type ArrayList, I should be able to use to iterate over the elements in the list. Each element contains a map and although the question of how to access the map content through JSTL has been answered here, if I pass an array of such maps, I can't find how to iterate over them and still access the map content using JSTL. There's documentation which refers to simple iterators but not to those whose items are themselves maps. BalusC, I'm not trying to force the issue, just that I've been looking at this all day, and still cannot seem to be able to output the contents of my data structure through jsp (only on the console). This as a separate question still has merit. If anyone can give me a simple example of how a java List is iterated over in JSP I'd be massively appreciative. Mark

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  • Low level qemu based debugging

    - by Dacav
    I've to test some low level code on an ARM architecture. Typically experimentation is quite complicated on the real board, so I was thinking about QEMU. What I'd like to get is some kind of debugging information like printfs or gdb. I know that this is simple with linux since it implements both the device driver for the QEMU Integrator and the gdb feature, but I'm not working with Linux. Also I suspect that extracting this kind of functionality from the Linux kernel source code would be complicated. I'm searching from some simple operating system that already implements one of those features. Do you have some advice? Thanks in advance.

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  • Test Results window in VS2008 not showing results

    - by TimK
    I have an existing solution that has been working for a long time, containing around 600 tests in a couple of test projects. I recently moved to a new PC - it's Win7-x64, and I installed a fresh copy of VS2008. When I first opened the solution on the new machine, the Test List Editor was completely empty. Trying to create a new test list caused the editor to refresh, and now it shows my test lists, but they're acting funny. I can select tests in the lists, and run them, but the results window doesn't usually update automatically to show the results of the latest test. It has done this when running a single test a couple of times, but even that is not consistent. The only way I can view the results is by manually going to the Test Runs window and connecting to individual test runs. When I do that, the results show up in the results list, but I can't check them to re-run the failed tests - the check boxes are all disabled. I guess I should describe the way it used to work, in case that was unusual - I used to select some tests from the Test Lists window, tell it to run them, and the results window would clear itself, and then display the results from the current run. I could then check any tests that I wanted to re-run, and use the run/debug button in the results window to do so. Any ideas what's going on here?

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  • How can I disable the CTRL-ALT-DEL key combination completely on XP/Vista/7?

    - by Travesty3
    I have been googling extensively to figure this out, and nobody seems to be able to give a direct answer. Let me start by saying that I'm NOT talking about requiring CTRL-ALT-DEL to enter logon information. I'm working on a golf simulator program which is used at golf centers. I need the ability to completely disable the CTRL-ALT-DEL key sequence so that the golf center customers can't get out of the program and access the computer at all. I realize there are other key combinations that need to be handled as well, we already have this entire feature working in XP, but we're going to be switching to Windows 7 soon, and CTRL-ALT-DEL is the only one that doesn't seem to work in Win7. I'd really like an all-around solution if at all possible. This same program may also be installed on a client's personal computer for an in-home golf simulator, but the computers that really need this feature (golf center computers) are provided to the golf center by us, so would the best option be to write a new shell? I don't know anything about that at all, other than others that suggest writing a new shell for kiosk mode. I'd really like a simpler option, like modifying the registry in some way. I have heard that you can remove some buttons from the menu screen that pops up, but unless I can remove pretty much all of them (including the shutdown/restart button in the bottom-right corner), this won't be enough of a solution for me. Thanks for taking the time to read this and thanks again for any help you could provide! -Travis

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  • Service reference addition issue in visual studio 2010

    - by user293072
    I am currently working on an application that allows reverse geocoding using silverlight + bing maps. The thing is that I want to add a reference to the reverse geocoding service provided in msdn ( http://msdn.microsoft.com/en-us/library/cc879136.aspx) i.e. http:// dev.virtualearth.net/webservices/v1/geocodeservice/geocodeservice.svc?wsdl, but when I try to get a reference in vs2010, I get the following error: The document at the url http:// dev.virtualearth.net/webservices/v1/metadata/geocodeservice/geocodeservice.wsdl was not recognized as a known document type. The error message from each known type may help you fix the problem: Report from 'XML Schema' is ''', hexadecimal value 0x1F, is an invalid character. Line 1, position 1.'. Report from 'DISCO Document' is ''', hexadecimal value 0x1F, is an invalid character. Line 1, position 1.'. Report from 'WSDL Document' is 'There is an error in XML document (1, 1).'. '', hexadecimal value 0x1F, is an invalid character. Line 1, position 1. Metadata contains a reference that cannot be resolved: 'http://dev.virtualearth.net/webservices/v1/geocodeservice/geocodeservice.svc?wsdl'. Content Type application/soap+xml; charset=utf-8 was not supported by service http: //dev.virtualearth.net/webservices/v1/geocodeservice/geocodeservice.svc?wsdl. The client and service bindings may be mismatched. The remote server returned an error: (415) Unsupported Media Type. If the service is defined in the current solution, try building the solution and adding the service reference again. It is good to mention that I can access the service URL from the browser (with a no style information warning). I am aware that there are other reverse geolocoding services out there, but I am somewhat forced by certain circumstances to use only Microsoft-related components/services. Please help :)

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  • Low Latency Serial Communications In .Net

    - by bvillersjr
    I have been researching various third party libraries and approaches to low latency serial communications in .Net. I've read enough that I have now come full circle and know as little as I did when I started due to the variety of conflicting opinions. For example, the functionality in the Framework was ruled out due to some convincing articles stating: "that the Microsoft provided solution has not been stable across framework versions and is lacking in functionality." I have found articles bashing many of the older COM based libraries. I have found articles bashing the idea of a low latency .Net app as a whole due to garbage collection. I have also read articles demonstrating how P/Invoking Windows API functionality for the purpose of low latency communication is unacceptable. THIS RULES OUT JUST ABOUT ANY APPROACH I CAN THINK OF! I would really appreciate some words from those with been there / done that experience. Ideally, I could locate a solid library / partner and not have to build the communications library myself. I have the following simple objectives: Sustained low latency serial communication in C# / VB.Net 32/64 bit Well documented (if the solution is 3rd party) Relatively unimpacted (communication and latency wise) by garbage collection . Flexible (I have no idea what I will have to interface with in the future!) The only requirement that I have for certain is that I need to be able to interface with many different industrial devices such as RS485 based linear actuators, serial / microcontroller based gauges, and ModBus (also RS485) devices. Any comments, ideas, thoughts or links to articles that may iron out my confusion are much appreciated!

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  • Versioning friendly, extendible binary file format

    - by Bas Bossink
    In the project I'm currently working on there is a need to save a sizable data structure to disk (edit: think dozens of MB's). Being an optimist, I thought that there must be a standard solution for such a problem; however, up to now I haven't found a solution that satisfies the following requirements: .NET 2.0 support, preferably with a FOSS implementation Version friendly (this should be interpreted as: reading an old version of the format should be relatively simple if the changes in the underlying data structure are simple, say adding/dropping fields) Ability to do some form of random access where part of the data can be extended after initial creation (think of this as extending intermediate results) Space and time efficient (XML has been excluded as option given this requirement) Options considered so far: Protocol Buffers: was turned down by verdict of the documentation about Large Data Sets - since this comment suggested adding another layer on top, this would call for additional complexity which I wish to have handled by the file format itself. HDF5,EXI: do not seem to have .net implementations SQLite/SQL Server Compact edition: the data structure at hand would result in a pretty complex table structure that seems too heavyweight for the intended use BSON: does not appear to support requirement 3. Fast Infoset: only seems to have paid .NET implementations. Any recommendations or pointers are greatly appreciated. Furthermore if you believe any of the information above is not true, please provide pointers/examples to prove me wrong.

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  • Qtestlib: QNetworkRequest not executed

    - by dzen
    I would like to test an asynchronous request to a webserver. For that purpose I'm creating a simple unittest to quickly try a few lines of code: void AsynchronousCall::testGet() { QNetworkAccessManager *nam = new QNetworkAccessManager(this); QUrl url("http://myownhttpserver.org"); QNetworkRequest req(url); this->connect(nam, SIGNAL(finished(QNetworkReply*)), this, SLOT(reqFinished(QNetworkReply *))); QNetworkReply *rep = nam->get(req); } void AsynchronousCall::reqFinished(QNetworkReply *rep) { qDebug() << rep->readAll(); qDebug() << "finshed"; } The problem is that reqFinished() is never reached. If I had a simple QEventLoop and and a loop.exec() just after the nam-get(req); the request is executed. Any hint ? Do I have to use a loop.exec() in my every unittests ?

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  • Execute remote Lua Script

    - by Bruno Lee
    Hi, I want to make an application that executes a remote script. The user can create a script (probabily a LUA script) then stores it in the server. Then he can uses an API for execute the script. I was thinking that API could be a webservice. So my questions are: I need high performance to execute the script. So my first choice was LUA script. Someone has another sugestion? Cause I need high perfomance, I was thinking if the webservice is the best solution. Maybe I could create a TCP/IP Windows Service that hold the users request. It is important to say that I will have many user executing scripts at the same time. So I will have a concurrency problem. My scripts will query in a database. I will use Tokyo Cabinet or Tokio Tyrant. I think Tokio Tyrant is the only solution cause I will have many requests. For perfomance, Do I need to make a connection pooling? Is there anyway to share variables between webservices requests? To make the webservice or the Windows service i was thinking to use C++. Can someone help with these questions? thanks

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