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• More swing design & actions

  - by takoi

  Im pretty new to gui programming so i've been reading through every post on this site about swing and design. Whats been answered over and over again is that one should have a class which handles all the action. Like this: (GUI being some JFrame) Now, this works great for one-way actions, like OpenDialog. But the actions for buttons in DialogA and B will have to have access to all the components (there will be many) in its dialog, and the controller. This is where im stuck. The only sane way i can see is to put it in DialogA/B but i would then need to pass the controller all the way down, through classes that dont even need it, and it'll get all spaghetti. Really dont want that. Someone must have encountered this problem before. So where should i put this Action? Or should i just drop the whole design?

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• How to set the pointer to the current row in the Datagridview in C#

  - by user286546

  I have a datagridview on the Windows Form in c#. I am updating and filling the table adapter on the cell event. The problem is that When I go to lower half of the datagrid which is not visible until I scroll down, as I click any cell, the table adapter is filled and updated and the pointerpoints to the very first row. Any suggestion on how to fix it. I have a ideas to record the top row of the datagridview that is visible and set the pointer to that row. But how to do it?

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• Should I 'delete' this CDC?

  - by Binary Worrier

  Folks, I'm trying to track down an intermittant bug that's showing up on site. I've a feeling it's in some GDI code I'd to cobble together to get a tally printer working. I'm connfused over how to delete this CDC, my code looks OK to me, but is this correct. // Create a device context for printing CDC* dc = new CDC(); if(! dc->CreateDC(safeDriverName.AsBSTR(), safePrinterName.AsBSTR(), NULL, NULL)) { throw . . . } // as I finish with the CDC dc->DeleteDC(); delete dc; Do I need delete dc after dc->DeleteDC();? Thanks

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• categorizing items in a list with python

  - by jtc99

  Just as a heads up, I'm really new to python. Currently I have a list of 110,000 donors in Excel. One of the pieces of information they give to us is their occupation. I would like to condense this list down to say 10 or 20 categories that I define. Normally I would just chug through this, going line by line, but since I have to do this for a years worth of data, I don't really have the time to do a line by line of 1,000,000+ rows. Is there anyway to define my 10 or 20 categories and then have python sort it out from there?

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• Match two mysql cols on alpha chars (ignoring numbers in same field)

  - by Steve

  I was wondering if you know of a way I could filter a mysql query to only show the ‘alpha’ characters from a specific field So something like SELECT col1, col2, **alpha_chars_only(col3)** FROM table I am not looking to update only select. I have been looking at some regex but without much luck most of what turned up was searching for fields that only contain ‘alpha’ chars. In a much watered down context... I have col1 which contains abc and col two contains abc123 and I want to match them on alpha chars only. There can be any number of letters or numbers. Any help very much wel come

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• How do I make TODO comments show up in the task list for C++ projects in Visual Studio 2010?

  - by Chris Simmons

  I'm trying to get my TODO comments to show up in the task list in Visual Studio 2010 for a C++ project, but they don't. I looked at this, but see no caveats other than the TODO comments need to be in the currently-open file. For example, creating a new Win32 console app places this: // TODO: reference additional headers your program requires here in a new file, stdafx.h. However, there's nothing in the task list. I have "Comments" chosen from the drop-down in the task list, but it's always empty. And it's not this problem; I can open the file and be looking at the TODO comment in the code editor and no task is shown. This is not a problem for C# projects as TODO comments show up as designed in those projects; this appears to be an issue specific to C++ projects. What else can I check?

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• JavaScript - Is it possible to get height from div in separate page?

  - by Kenny Bones

  Hi, I'm wondering, is it possible to collect the height of a specific div container from a separate page with JavaScript? I'm using jQuery btw and I'm in need of comparing heights of div containers. Edit: To clarify a bit more, I load content from a specific div in a separate page using jQuery. This content is faded into a different container with dynamic height. But in the small fraction of time before the content arrives, it shrinks down to it's min-height. What I've done so far is collecting the height of the container before and after the load. But it only works after I've loaded content once. Because I don't have the height before it's been loaded the first time.

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• how to verify that an old session is really destroyed?

  - by jodeci

  Um, this might sound a bit weird. We were having some problems with a specific browser under a very specific condition, and finally narrowed down the problem to the fact that we were not properly destroying the old sessions after doing session_regenerate_id(). I believe I have solved this problem by doing session_regenerate_id(true) now, but how does one verify that the previous sessions really do not exist any more? Someone suggested cURL but I cannot find my way around their docs. Sadly(?) the boss does not take 'it just works' for an answer so I'd really appreciate any advice!

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• How can I load an MP3 or similar music file for display and anaysis in wxWdigets?

  - by Jon Cage

  I'm developing a GUI in wxPython which allows a user to generate sequences of colours for some toys I'm building. Part of the program needs to load an MP3 (and potentially other formats further down the line) and display it to the user. That shuold be sufficient to get started but later I'd like to add features like identifying beats and some crude frequency analysis. Is there any simple way of loading / understanding an MP3's contents to display a plot of it's amplitudes to the screen using wxWidgets? I later intend to port to C++/wxWidgets for speed and to avoid having to distribute wxPython.

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• IB z-order on simulator 6.0

  - by Stanley

  Consider the above's IB objects listing. Siblings further down the list should be on top of the siblings listed further up when rendered on the screen. Under Xcode 4.5.2, everything is ok if iphone simulator 5.1 is used. But for simulator 6.0 the map just covers everything. The same if using actual devices (phones) for testing. Hope that somebody knowledgeable could help. Please also add comments if you do not find such a problem on simulator 6.0. Because chances are the problem is related to how my project is setup. Update : Have setup a test project with the iOS 6 map view. There seems to be no problem with the z-order. So the problem should relate to my code.

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• Does the Internet make us less good programmers? [closed]

  - by stagas

  With all the information and code available nowadays on the Internet has that diminished our capability of remembering or learning stuff just because we know they're available somewhere out there, just a Google away or a StackOverflow question away? For example I find myself visiting php.net quite often to check the syntax of the same functions over and over again, not because my memory sucks, but I don't feel like keeping the information in me, since I know I'll find it again on the net. And about StackOverflow, isn't the process of figuring things out on your own supposed to improve your programming skills? If the answers are all just clicks away, do we actually learn something or just keep a pointer in our heads where to search for it again when we need it? Your thoughts are welcome. Hope it doesn't shut down as subjective or anything, the answers would be really interesting ;)

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• Make a simple animation in winforms using a loop

  - by Michael Quiles

  I need help making this loop to move a label move smoothly across the screen using count for the animation (its required). The labels location is currently in location 0,0 I'd like to make it go in a square right - down - left - back to its original position how can I accomplish this ? please give me an example using my code below. Thank You in advance. private void xAnimeTimer_Tick(object sender, EventArgs e) { int count; this.xAnimTimer.Stop(); for (count = 0; count <= 100; count++) { this.xAnimLabel.Left = count; } for (count = 0; count <= 150; count++) { this.xAnimLabel.Top = count; }

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• Can you have multiple interpolators on a single view when using ViewPropertyAnimator?

  - by steven

  For example, I would like to animate a view such that it moves down in the y direction while decelerating, and at the same time it undergoes an alpha change linearly. The code would look something like this: myView.animate().translationY(100).setDuration(1000).setInterpolator(new DecelerateInterpolator()); myView.animate().alpha(1).setDuration(1000).setInterpolator(new LinearInterpolator()); This does not work of course because the LinearInterpolator overwrites the DecelerateInterpolator. Is there a way to have one interpolator for the translation part of the animation and a different interpolator for the alpha part? I am aware that this can be accomplished using ObjectAnimator or an AnimationSet, but my question is about whether it can be done using the much cleaner ViewPropertyAnimator.

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• How to trigger Mouse-Over on iPhone?

  - by Andrew

  This might seem like a really dumb question, but I am writing an application and I have come across where my mouse-over, mouse-click and mouse-hover need different events bound to them. Now on Internet Explorer, Firefox, and Safari. It all works as expected. However, on my iPhone the actions will not trigger. Now my question is are their any specific ways I can have the Mouse-Over essentially be fired when I hold my finger down and trigger an event? An example where this doesn't work is right on this website when you hover over a comment it is supposed to display the +1 or flag icon. I am using jquery.

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• I serialized a C++ object, how to allocate memory for it without knowing what type it is?

  - by Neo_b

  Hello, I have serialized a C++ object and I wish to allocate space for it, although I can't use the "new" operator, because I do not know the object's class. I tried using malloc(sizeof(object)), although trying to typecast the pointer to the type the serialized object is of, the program shut down. Where is the information about the object class stored? class object { public: virtual void somefunc(); int someint; }; class objectchild:public object { } object *o=(object*)malloc(sizeof(objectchild)); cout << int(dynamic_cast<objectchild*>(o)) << endl; This causes a program shutdown. Thank you in advance.

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• PHP include(): File size & performance

  - by Tom

  An inexperienced PHP question: I've got a PHP script file that I need to include on different pages lots of times in lots of places. I have the option of either breaking the included file down into several smaller files and include these on a as-needed basis... OR ... I could just keep it all together in a single PHP file. I'm wondering if there's any performance impact of using a larger vs. smaller file for include() in this context? For example, is there any performance difference between a 200KB file and a 20KB file? Thank you.

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• Android GPS app not closing connection

  - by tadywankenobi

  Hi there, Fairly new to Android, so just trying to work out: I have a simple Maps app that plots a couple of locations. It's a demo for a potentially bigger app later. The one thing I would like to do is make it exit correctly. I want to assume that when a user hits the "Home" or "Back" button on the phone, that they have exited the app. I want when this has happened for the GPS process to shut down. I can't seem to find any examples of how to do this correctly. I have an onDestroy() subclass with a super.onDestroy() method but this doesn't seem to cut it. I've tested on my phone and while everything else seems to work fine, this is bugging me. I keep seeing the GPS icon in the notifications bar. To give you an example, this doesn't happen when you leave GoogleMaps. Anyone any ideas or know what I'm missing? T

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• How to start SQL Server in a remote machine using code from Delphi?

  - by MLB

  Hi there: I am developing an application (Delphi 7, windows XP) that uses a connection to a remote SQL Server. Sometimes, that server is down, and I want to do something to start it. I was trying to start SQL Server in a local context, and it was fine, it worked... But the point is that I have to start it up from a remote machine. I can see SQL Server status from a remote server, but I can't start it up... Maybe it gets problems because of user and password, but where to specify the login to the remote machine? Do you have any idea to do this??? I am sorry about my English. Thanks.

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• Upgrading IIS web sever framework 2.0 to 3.5 considerations

  - by Grant

  Hi, i will be responcible for upgrading an IIS web server from the Microsoft .NET framework v2.0 to v3.5. I am wondering if there is anything special i need to know or any caveats i should be aware of before proceding? The site gets a fair number of hits per day and I will be taking it down and performing the upgrade at an off-peak time. Aside from double clicking the installer is there anything i need to know? Will the server need to be rebooted afterwards, does the installer handle all of the configuration changes? etc.. Thanks.

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• How to profiling my C++ application on linux

  - by richard

  HI, I would like to profile my c++ application on linux. I would like to find out how much time my application spent on CPU processing vs time spent on block by IO/being idle. I know there is a profile tool call valgrind on linux. But it breaks down time spent on each method, and it does not give me an overall picture of how much time spent on CPU processing vs idle? Or is there a way to do that with valgrind. Thank you.

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• Storing information in the DOM?

  - by John

  Im making a small private message application in the form of a phone. Ten messages are shown at the time. And the list of messages are scrolled up/down by hiding them. Just how bad is it to use the DOM to store information in this way. My main goal for doing this is to reduce calls to the database. And instead of making a new call all the time, it only checks if any new messages has arrived and ads the new message(s). Whats the alternative, cookies anyone? Thank you for the time

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• Drupal Views: Render Null Result for Relationship as 0

  - by Kyle S

  I have a View configured in Drupal to return nodes, sorting them by their average vote in descending order. For the purpose of the View, the value of the average votes is a Relationship. I noticed that nodes with no votes are displayed after nodes with a negative average. Nodes with no votes should have an average of 0, but I believe the MySQL JOIN is causing NULL values to be returned (as there are no matching rows in the joined table, since a row is created after the first vote is cast for that item). I discovered that with MySQL it is possible to output all values that are NULL in a column as another value with IFNULL(column_name,'other value'). I feel like I would need to modify the Views module in order to obtain this functionality, but I'm hoping that there is some sort of option that returns NULL values in a relation (a relation doesn't exist for the item) as 0 instead of NULL, so that I can properly sort the nodes. The modules I am using include Views, Voting API, Vote Up/Down, and CTools. Thanks.

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• How should I mock out my data connectivity

  - by BobTheBuilder

  I'm trying to unit test my Data Access Layer and I'm in the process of trying to mock my data connectivity to unit test my DAL and I'm coming unstuck trying to mock out the creation of the commands. I thought about using a queue of IDbParameters for the creation of the parameters, but the unit tests then require that the parameters are configured in the right order. I'm using MOQ and having looked around for some documentation to walk me through this, I'm finding lots of recommendation not to do this, but to write a wrapper for the connection, but it's my contention that my DAL is supposed to be the wrapper for my database and I don't feel I should be writing wrappers... if I do, how do I unit test the connectivity to the database for my wrapper? By writing another wrapper? It seems like it's turtles all the way down. So does anyone have any recommendations or tutorials regarding this particular area of unit testing/mocking?

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• Java : VolatileImage slower than BufferedImage.

  - by Norswap

  I'm making a game in java and in used BufferedImages to render content to the screen. I had performance issues on low end machines where the game is supposed to run, so I switched to VolatileImage which are normally faster. Except they actually slow the whole thing down. The images are created with GraphicsConfiguration.createCompatibleVolatileImage(...) and are drawn to the screen with Graphics.drawImage(...) (follow link to see which one specifically). They are drawn upon a Canvas using double buffering. Does someone has an idea of what is going wrong here ?

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• Web server which supports removing a file immediately after it has been downloaded once?

  - by Shabbyrobe

  I need a web server that allows me to remove a file after it has been successfully downloaded once. Is there any way to do this with apache? Is there another web server I can use for this task? I had already looked into Tornado for this purpose, but couldn't find a way to get an event to fire as soon as the download finished. the on_connection_close would only fire when I shut down the server. I'd prefer something PHP or Python-based if I have to code it myself.

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