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  • C# Why does this code not show a GUI properly?

    - by Tom
    class Program { static String ChannelName = null; static Form1 f; static void Main() { f = new Form1(); f.Show(); try { MY CODE WHICH CALLS INTO ANOTHER CLASS BUT CANNOT PASS THE GUI INSTANCE AS IT USES REMOTING } } } I know this isnt the best/normal way to do it, but i need to write data to the GUI from a class which has bo instance of the GUI so i was going to call Program.method() and use a function to write to the GUI in program. However when i run the above my GUI displays but with the windows hourglass? Could someone show me a quick fix so that i can still crudely show the GUI, let the application code run and then later write to the GUI?

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  • How to handle feedback from background threads if the user uses the back button?

    - by Janusz
    I have the following problem: I have an Activity where a user can start a web search showing a new activity to show a progress bar until the results are shown. Now the user can either wait for the results or maybe think about the search parameters, hit the back button and triggering a new search. The search is running in an Async Task and therefor still running if the user hits back. At the moment the thread finishes it calls some methods on the old activity causing the activity to show a dialog. This causes the system to crash because the dialog tries to show itself with a reference to an activity that is not longer present on the screen. How can I achieve a dialog that is only shown if the activity is still active?

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  • Prevent Session from being created In some cases

    - by Jean Barmash
    In my app, I have an external monitor that pings the app ever few minutes and measures its uptime / response time Every time the monitor connects, a new server session is created, so when I look at the number of sessions, it's always a minimum of 15, even during times where there are no actual users. I tried to address this with putting the session creation code into a filter, but that doesn't seem to do it - I guess session automatically gets created when the user opens the first page? all() { before = { if (actionName=='signin') { def session = request.session //creates session if not exists } } } I can configure the monitor to pass in a paramter if I need to (i.e. http://servername.com/?nosession, but not sure how to make sure the session isn't created.

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  • Why doesn't C++ allow you to request a pointer to the most derived class?

    - by Matthew Lowe
    (This question should probably be answered with a reference to Stroustrup.) It seems extremely useful to be able to request a pointer to the most derived class, as in the following: class Base { ... }; class DerivedA { ... }; class DerivedB { ... }; class Processor { public: void Do(Base* b) {...} void Do(DerivedA* d) {...} void Do(DerivedB* d) {...} }; list<Base*> things; Processor p; for(list<Base*>::iterator i=things.begin(), e=things.end(); i!=e; ++i) { p.Do(CAST_TO_MOST_DERIVED_CLASS(*i)); } But this mechanism isn't provided in c++. Why?

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  • How do I perform a dynamic select in Linq?

    - by Matt Mangold
    I am trying to figure out how to dynamically specify the properties for my select clause in a linq query. Lets say I have a collection of employee objects. At run time, the end user will be specifying which properties they would like to see for those employees, so I need to be able to dynamically construct my Linq select clause. I have used the dynamic Linq library, but I prefer not to use that, because it requires me to build a string to pass to the select method. I'd like to understand how to do this via Expressions.

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  • resend confirm instructions via devise

    - by Paul 'Whippet' McGuane
    what im trying to achieve is that when an admin views a list of members, they can click a link to resend the instructions on how to confirm that members accounts. this is the code im using to try and achieve this = link_to 'Resend Confirmation', confirmation_path(:user => {:email => user.email}), :remote => :true im hoping that this would allow me to pass the users email through to the link have it then sent to that user though the issue im getting is Could not find a valid mapping for {:user=>{:email=>"[email protected]"}}

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  • How to use this easeOutBounce method?

    - by coure06
    here is the method for easeOutBounce easeOutBounce: function (t, b, c, d) { if ((t/=d) < (1/2.75)) { return c*(7.5625*t*t) + b; } else if (t < (2/2.75)) { return c*(7.5625*(t-=(1.5/2.75))t + .75) + b; } else if (t < (2.5/2.75)) { return c(7.5625*(t-=(2.25/2.75))t + .9375) + b; } else { return c(7.5625*(t-=(2.625/2.75))*t + .984375) + b; } } Where t: time, b: begining position, c: total change in position, d: duration. Can any one explain how can i use this method for easeOutBounce value? I mean what i will pass as parameter and how i will use the return value?

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  • Calling C++/CLI Method with System::DateTime parameter requires 'ValueType' as a parameter?

    - by David Ipsen
    I'm attempting to call a method written in C++/CLI from C#. The C++/CLI code is used to update a TIMESTAMP column in an Oracle database, given a record ID and the System::DateTime object which is the .NET compatible data type for Oracle's TIMESTAMP type. The method I am calling has the following prototype: bool ChangeJobUpdateDate (int jobIdIn, System::DateTime^ updateDateIn) I've added a reference to this DLL project in a test project that I made; I'm writing the tests in C#. However, when I try to call this method from the C# unit test project, the function appears to have the following method declaration (via intellisense): bool ChangeJobUpdateDate (int jobIdIn, ValueType updateDateIn) I'm admittedly not that familiar with C++/CLI, so is there something I'm missing?

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  • Looking for a new PHP website framework

    - by Glycerine
    I built many a website, and my own 'custom' framework is just a general box of scripts cobbled together with loose ideas. I would love to progress to a framework which allows me to pass it onto the client for freedom. Someone suggested using wordpress but I'm not sure how general this can be. A current site I need to build is a fancy kitchen company, price lists, flash gallery (with backend driven pics) and well designed home. How could I bend the the will of wordpress? Alternatively, does anyone have a suggestion for an alternative. Thanks in advance guys -

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  • Duplicate file descriptor after popen

    - by alaamh
    I am using popen to execute a command under linux, then 4 process wile use the same output. I am trying to duplicate the file descriptor again to pass it to each process. here is my code: FILE* file_source = (FILE*) popen(source_command, "r"); int fd = fileno(file_source); fdatasync(fd); int fd[4],y, total = 4 ; for (y = 0; y < total; y++) { dest_fd[y] = dup(fd); } actually if total set to 1 it work fin, after changing total = 4 it does not work anymore.

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  • Using a message class static method taking in an action to wrap Try/Catch

    - by Chris Marisic
    I have a Result object that lets me pass around a List of event messages and I can check whether an action was successful or not. I've realized I've written this code in alot of places Result result; try { //Do Something ... //New result is automatically a success for not having any errors in it result = new Result(); } catch (Exception exception) { //Extension method that returns a Result from the exception result = exception.ToResult(); } if(result.Success) .... What I'm considering is replacing this usage with public static Result CatchException(Action action) { try { action(); return new Result(); } catch (Exception exception) { return exception.ToResult(); } } And then use it like var result = Result.CatchException(() => _model.Save(something)); Does anyone feel there's anything wrong with this or that I'm trading reusability for obscurity?

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  • How to acquire the Context in an Adobe AIR Native Extension?

    - by rotaercz
    In the following line of code... ProgressDialog progressDialog = ProgressDialog.show(getBaseContext(), "LOADING_TITLE", "LOADING_MESSAGE"); In place of getBaseContext() I've tried... getApplicationContext() this NativeActivity.this (NativeActivity)getApplicationContext() Among others. I'm not sure why it's not working. In the NativeExtensionContext which extends FREContext I am passing the activity using getActivity() to NativeActivity. Everything works well but I get a "Nullpointerexception" or “android.view.WindowManager$BadTokenException: Unable to add window — token null is not for an application” when I try I try to get a reference to the Context. Anyone with experience using Adobe AIR Native Extensions and/or Android Java would be great.

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  • Hibernate - One design problem

    - by Yatendra Goel
    I am learning Hibernate from the tutorial on JBoss website. I have a confusion in a code example located here. There is a Cat class code at 4.1. A simple POJO example. This Cat class has a reference to his mother as private Cat mother; Q1. If the class has an identifier property as id, then wouldn't it be better to store the cat's mother's id instead of cat's mother object. means instead of private Cat mother; wouldn't it be better to have private long motherId; `

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  • Removing duplicates (within a given tolerance) from a Numpy array of vectors

    - by Brendan
    I have an Nx5 array containing N vectors of form 'id', 'x', 'y', 'z' and 'energy'. I need to remove duplicate points (i.e. where x, y, z all match) within a tolerance of say 0.1. Ideally I could create a function where I pass in the array, columns that need to match and a tolerance on the match. Following this thread on Scipy-user, I can remove duplicates based on a full array using record arrays, but I need to just match part of an array. Moreover this will not match within a certain tolerance. I could laboriously iterate through with a for loop in Python but is there a better Numponic way?

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  • How to create an ARGB_8888 pixel value?

    - by vidstige
    Say I want to create an array of pixel values to pass into the createBitmap method described here. I have three int values r, g, b in the range 0 - 0xff. How do I transform those into a opaque pixel p? Does the alpha channel go in the high byte or the low byte? I googled up the documentation but it only states that: Each pixel is stored on 4 bytes. Each channel (RGB and alpha for translucency) is stored with 8 bits of precision (256 possible values.) This configuration is very flexible and offers the best quality. It should be used whenever possible. So, how to write this method? int createPixel(int r, int g, int b) { retrurn ? }

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  • Pull DIV from separate page and update DIV in current page

    - by brhea
    Hi everyone, I've got a simple one but haven't been able to find an example of a solution that fits exactly what I'm asking. Sorry in advance if this is a repeat. From my navigation menu, I want each link to reference a specific DIV in a separate page and then pull that DIV and replace the content in the current page. <ul> <li><a href="#">About</a></li> <li><a href="#">Contact</a></li> ..and so on </ul> Elsewhere in the page: <div id="displayContent">Content refreshes onClick. Previous content fades out, fresh content fades in.</div> Separate page (content.php): <div id="about">About content</div> <div id="contact">Contact content</div>

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  • how to debug VC++ program, input file not open while debuging

    - by zeedotcom
    i am using Visual studio 8. i pass command line argument to my program when i execute the program using exe file it works fine but when i use to debugg. it is unable to open the input file which i have given it in the form of command line argument. although i have given the command line argument in the Project-properties-debug-command line arguments.... e.g "program.exe" input_file output_file input file contains data which i have to use in the calculation if i am unable to debug it. how can i remove the errors in my program reply me thanks

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  • Assigning function within function object without invoking the function itself.

    - by webzide
    Dear experts, I am trying to assign an function within an function object property without actually invoking then function itself. for instance, I have the following function object class definition function objectOne(name, value, id){ this.name=name; this.value=value; this.id=id; this.methodOne=methodFunction(this); } the last line this.methodOne=methodFunction(this); I want to pass the current object to the function but at the same time i don't want to execute the function right now. But if I do it this way without the bracket this.methodOne=methodFunction then the argument of this object would not be passed as a parameter to the function. Is there a way to work through this. Thank you in advance

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  • Is it possible to remove all event handlers of a given element in javascript?

    - by MartyIX
    Hi, I would like to remove ALL handlers for a given event type. Let's say I've added twice "onclick event" to a button and now I would like to return back to the original state where no event handler was set to the button. How can I do that? P.S.: I've found removeEventListener (non-IE)/detachEvent (IE) methods but the functions want me to pass as a parameter the function that handles the event which seems to me quite clumsy because I would have to store the functions somewhere. EDIT: http://ejohn.org/blog/flexible-javascript-events/ - I'm now using this code Thank you!

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  • How to expose a control collection to a property grid at design time

    - by Stefano Delendati
    I have a custom control that with a property that is a collection of custom object. This custom object hava a reference to some component/controls. When at design time I tray to add an item to the collection and select the object, VS tells me that the control is not serializable. This is the code (simplified version - but not to much): public class ViewRefObj { public control view { get; set; } public ViewRefObj() { } } private List<ViewRefObj> _controls=new List<ViewRefObj>(); public List<ViewRefObj> Views { get { return _controls; } }

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  • How to select a subset of results from a select statement

    - by Ankur
    I have a table that stores RDF triples: triples(triple_id, sub_id, pre_id, obj_id) The method (I need to write) will receive an array of numbers which correspond to pre_id values. I want to select all sub_id values that have a corresponding pre_id for all the pre_ids in the array that is passed in. E.g. if I had a single pre_id values passed in... lets call the value passed in preId, I would do: select sub_id from triples where pre_id=preId; However since I have mutliple pre_id values I want to keep iterating through the pre_id values and only keep the sub_id values corresponding to the "triples" records that have both. E.g. image there are five records: triples(1, 34,65,23) triples(2, 31,35,28) triples(3, 32,32,19) triples(4, 12,65,28) triples(5, 76,32,34) If I pass in an array of pre_id values [65,32] then I want to select the first, third, fourth and fifth records. What would I do for that?

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  • about service accounts and unregistered users

    - by user1500824
    I have a web app in php mysql, I want to use one google drive account for my app. Can I use my app's accounts instead of google users for privilages. I read in SDK I can use service account to login without promting user, but I don't know how to share or give permissions files for custom users. In api reference I found this: "The user is not necessarily yet a Google user (e.g. if a file or folder is shared with an email address that does not yet have an associated Google account). Example: 1111459233037698895607". How a custom user in my app should get a token for own privilages.

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  • Is this the correct why of speaking to a "Content Manager" Class?

    - by DeanMc
    I am creating a silverlight site. I am currently breaking out my ideas into pieces of functionality. One of the idea's I have is the concept of a content manager. This is essentially a UI control with 4 regions. Top, Bottom, Right & Left. I also have a collection of objects that are considered "Menu Items". These are controls that function as a way to navigate around, similar to links. The idea I have is to implement an IMenuItem interface. Among the standard pieces of information (Text, PageReference, etc) I was also going to hold a reference to the content manager. My idea behind this thinking is that I can pass the PageReference to a property on the ContentManager and then call a method which knows how to update the content manager accordingly. Is this the best way of implementing this or is their some sort of pattern for it?

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  • Java: Executing a Java application in a separate process

    - by _ande_turner_
    Can a Java application be loaded in a separate process using its name, as opposed to its location, in a platform independent manner? I know you can execute a program via ... Process process = Runtime.getRuntime().exec( COMMAND ); ... the main issue of this method is that such calls are then platform specific. Ideally, I'd wrap a method into something as simple as... EXECUTE.application( CLASS_TO_BE_EXECUTED ); ... and pass in the fully qualified name of an application class as CLASS_TO_BE_EXECUTED.

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  • Reading http file on url

    - by Nkunzis
    I am trying to read an xml file on an http url. "Unexpected end of file from server" keeps on coming . the page is password protected, I would like to know if I am properly giving in my url authentication details. I tried with non protected pages and I can read them properly. Here is my code: URL url = new URL("http://username:[email protected]:0000/test.xml"); URLConnection yc = url.openConnection(); BufferedReader in = new BufferedReader(new InputStreamReader(yc.getInputStream())); String inputLine; while ((inputLine = in.readLine()) != null) System.out.println(inputLine); in.close();

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