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• QScrollArea widget content promoted to QWidget

  - by ocell

  Hi folks, First of all, thanks for you time reading my question. I created my own Qt Widget (parent of QWidget) and has a QImage "inside" to manipulate images. The problem I have is the following: when I promote the content of a QScrollArea to my widget, the scroll features doesn't works; I haven't any scroll bar or I can't see any result when I use the method 'ensureVisible(..)'. Please can you tell me if I need to overload or override any method in my own widget. Regards and thanks in advance, Oscar.

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• Identifying PHP unused variables (in Emacs)?

  - by Roberto Aloi

  Is it somehow possible to identify unused variables in a PHP file in Emacs? With other languages, this is possible by using tools such as flymake. I've already enabled Flymake to show syntax errors for my PHP files on the fly, but still it's frustrating that PHP logic errors are sometimes due to situations like: <?php $foo = whatever(); $bar = something($fo); ... Note the typo on $foo that will contribute to the developer's headache and to his exorbitant use of coffee.

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• How to change the default text of Cancel BUtton which appears in the UISearchBar +Iphone

  - by Pradeep Reddy Kypa

  HI I am developing an Application where i wanted to change the text of Search String in the SearchBar. I wanted to change the text of Cancel Button Also which appears next to the SearchBar. Before entering any string in the search bar we wil get the Search String as the default string. i wanted to change the text of that string and when we click on that searchbar we get a cancel button next to searchbar and i wanted to change the text of that cancel button. PLease help me.

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• Getting progress status out of a class library method

  - by Richard

  This app that I am doing uses a class library (if I dare call it that) to do the bulk of the work: 2 main methods in there (DoWork and UndoWork) use the other classes to achieve thier goal. Now that that works, I want to get out of the Console test enviroment and do a GUI. How would I get the status of say, the DoWork() method to update a progress bar? Should I multilate the class library (which currently works with the Console and Windows.Forms) to update? The problem with that is that I would surely have to make the class library use Window.Forms which will mess up the console testing apps (And there are lots of them - I tested all the way through, and then all together). Could you suggest some ideas, or places I can read up about ideas (the whole point of writing this this program is to learn, afer all)? Oh, by the way, suggestions like "foresight" or "planning" probably won't help here...(now, anywyay!) - But certainly will in future projects!

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• How to reduce java concurrent mode failure and excessive gc

  - by jimx

  In Java, the concurrent mode failure means that the concurrent collector failed to free up enough memory space form tenured and permanent gen and has to give up and let the full stop-the-world gc kicks in. The end result could be very expensive. I understand this concept but never had a good comprehensive understanding of A) what could cause a concurrent mode failure and B) what's the solution?. This sort of unclearness leads me to write/debug code without much of hints in mind and often has to shop around those performance flags from Foo to Bar without particular reasons, just have to try. I'd like to learn from developers here how your experience is. If you had previous encountered such performance issue, what was the cause and how you addressed it? If you have coding recommendations, please don't be too general. Thanks!

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• Nested class with hidden constructor impossible in c#?

  - by luckyluke

  I' ve been doing some programming lately and faced an issue which i found weird in c#. (at least for me) public class Foo { //whatever public class FooSpecificCollection : List<Bar> { //implementation details } public FooSpecificCollection GetFoosStuff() { //return the collection } } I want the consumer of Foo to be able to obtain a reference to FooSpecificCollection, even perform some operations on it. Maybe even set it to some other property of Foo or smth like that, but not To be able to CREATE an instance of this class. (the only class that should be able to instatiate this collection should be Foo. Is my request really that far-fetched? I know that people way smarter defined c# but shouldn't there be such an option that a parent class can create a nested class instance but nobody else can't. So far I created a solution to make an abstract class, or interface available through the property and implement a concrete private class that is not available anywhere else. Is this a correct way to handle such a situation.?

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• ASP.NET with VS 2008 How to Run Root "/" with Local Web Server

  - by harrije

  I want to use the built-in web server for VS 2008 and have it run my web-site project as the top level root "/". Instructions for VS 2005 can be found at: http://weblogs.asp.net/scottgu/archive/2006/12/19/tip-trick-how-to-run-a-root-site-with-the-local-web-server-using-vs-2005-sp1.aspx My problem is with step 3 of the instructions. When the the web-site project node is selected, right click never gives me an option to select a property-grid like that shown under step 3. Nor could I find another way in the menu or tool bar to get the property-grid. I don't know if the UI difference I'm seeing has to do with me using VS 2008 and the instructions are for VS 2005 or what? How do I get the web-site property-grid for VS 2008, or is there an alternative way to get the root setup I want?

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• Watin File Download Problem

  - by EmrahIlker

  When I clicked button with mouse, File Download Dialog opens directly. But when Watin Button Click methods click the vert same button on same ie window this message appears and wait my confirm To help protect your security, Internet Explorer blocked this site from downloading files to your computer. Click here for options. I turned off the Information bar for file downloads,(Internet Options-Security-Custom Level-Downloads-Automatic prompting for file downloads--Enable),allow active x content, lower security level for internet etc.. but didn't work. I'm using Win 7, IE8.

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• C# ListBox hide vertical scrollbar

  - by Codeffect

  How to hide the vertical scroll bar of a Listbox that is present inside a div. <td class="ctrlForm"> <div id="lstQueriesDiv" style="OVERFLOW:auto; Width: 650px; height:167px;" > <asp:ListBox ID="lstQueries" runat="server" CssClass="cssLstQueries" Rows="9" ></asp:ListBox> </div> </td> .cssLstQueries{ Width:auto; overflow: hidden; -ms-overflow-y : hidden; -ms-overflow-x : hidden; }

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• Why am I getting two section headers on this grouped table?

  - by Andy

  I'm sure this is some easy-to-fix issue that I've missed, but I can't figure it out. I've got a grouped table view with 3 sections. I'm using the following code to generate section headers: -(NSString*)tableView:(UITableView*)tableView titleForHeaderInSection:(NSInteger)section { if (section == 0) { NSString *header = @"Header 1"; return header; } if (section == 1) { NSString *header = @"Header 2"; return header; } else { NSString *header = @"Header 3"; return header; } } When my table is displayed, there are two headers for each section - one with white text on a gray bar that stretches across the screen (like the letter separators in the Contacts app), and one in gray text on the table background (which is the one I want). Both headers have identical text. Where is the first header coming from?

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• Python command line UI

  - by hdx

  Hey guys/gals I'm writing a python script that fixes some duplicate issues on my database. I would like to display some progress status to the users, currently I just print it like this: print "Merged " + str(idx) + " out of " + str(totalCount); The problem is that it prints that in a new line for every record and that does not look so good :) I'd like to either always print the string above on the same line on the screen or use some smart widget that displays it in some sort of progress bar. I intent to run this on the command line, any suggestions will be much appreciated.

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• Invisible .htaccess Redirect from /public_html/ to /public_html/folder

  - by dosboy

  I need to point the root domain of my hosting account to a subdirectory (joomla). I want this to be invisible (i.e. browser address bar doesn't change). Also, I need this to work when a user hits the root or a subfile/subfolder. I've tried the following rules, which work individually, but I can't get them to work together. This one works when no subfile/subfolder is specified: RewriteEngine On RewriteRule ^$ /joomla/ [L] And this one works when a subfile/subfolder IS specified: RewriteEngine On RewriteCond %{REQUEST_FILENAME} !-f RewriteRule (.+)$ /joomla/$1 [L] I just can't figure out how to combine them.

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• How to scan a mixed mode C++/CLI assembly to create the intellisense XML?

  - by Anzurio

  We have a C++/CLI mixed mode assembly out of which we produce an XML file that we use for both, Sandcastle documentation and Intellisense. We use a tool which scans the assembly and create all entries for us, unfortunately I don't know how this tool works and it is unable to handle method signatures like: void foo([Out] long bar); The XML file is expected this parameter to be System.Int32!CompilerServices.IsLong@ but our tool just can't handle that. In other words, how do you scan an assembly to create the XML file needed for Intellisense?

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• Interface and base class mix, the right way to implement this

  - by Lerxst

  I have some user controls which I want to specify properties and methods for. They inherit from a base class, because they all have properties such as "Foo" and "Bar", and the reason I used a base class is so that I dont have to manually implement all of these properties in each derived class. However, I want to have a method that is only in the derived classes, not in the base class, as the base class doesn't know how to "do" the method, so I am thinking of using an interface for this. If i put it in the base class, I have to define some body to return a value (which would be invalid), and always make sure that the overriding method is not calling the base. method Is the right way to go about this to use both the base class and an interface to expose the method? It seems very round-about, but every way i think about doing it seems wrong... Let me know if the question is not clear, it's probably a dumb question but I want to do this right.

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• facebook php-sdk not logging out

  - by Meisam Mulla

  I'm having a hard time getting this to work. I use the following to generate the logout url: $logout = "https://www.facebook.com/logout.php?next=" . urlencode('http://' . $_SERVER['SERVER_NAME'] . $_SERVER['PHP_SELF']) . "&access_token=" . $facebook->getAccessToken(); Which generates the correct (worked with the last version) url: https://www.facebook.com/logout.php?next=http%3A%2F%2F...&access_token=AA....ZD However this does not actually log the user out. I tried using $facebook->getLogoutUrl(array('next' => 'myurl')) which generates pretty much the same url. This also did not work. I am lost as to why its not logging the user out. I actually tried manually putting the address into the address bar but it redirects me to the Facebook homepage.

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• Open a chrome tab from delayed javascript window.open

  - by jettero

  When I window.open("http://blarg") in chrome, I get a new tab. If I delay the open, say using a jquery $(hrm).animate({},5e3,function(){window.open(url)); it opens the url in a new window with no status bar, etc — if I give it permission to pop-up that is. I'm looking for a way to get the instant behavior, that is, I wish to open a URL after an animation, but still in a new tab. I imagine I could get by with learning a way to instruct chrome to never ever open pop-ups and to always open them in tabs (I imagine there's a webkit setting, why it's not a built in is a mystery); but I'd rather try to find a way to do it from the javascript if possible. I somewhat doubt there's any way to do this though. I'm not aware of any javascript that's tab-aware.

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• Simulating a cookie-enabled browser in PHP

  - by Itamar Benzaken

  How can I open a web-page and receive its cookies using PHP? The motivation: I am trying to use feed43 to create an RSS feed from the non-RSS-enabled HighLearn website (remote learning website). I found the web-page that contains the feed contents I need to parse, however, it requires to login first. Luckily, logging in can be done via a GET request so it's as easy as fopen()ing "http://highlearn.website/login_page.asp?userID=foo&password=bar" for example. But I still need to get the cookies generated when I logged in, pass the cookies to the real client (using setcookie() maybe?) and then redirect.

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• Is there a way to efficiently update one value in dojo chart2d?

  - by Nick Orlowski

  I am looking for a way to update one and only one value in a dojox chart2d. There is a way to update an entire series, which involves mychart.updateSeries("myseriesname",array_of_data) mychart.render() but This is too slow for my application. What I want to do is be able to drag the mouse over a vertical bar chart and have the values change as I am doing it. Only one or two values will need to change, so there is no need to reload all of the plots, just the two or three values that are changing. Is there a method that will quickly update only one or two values without lag? Thanks, Nick O I may just end up writing my own css version :S

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• How do I understand what the following means?

  - by Runner

  Quoted from here: if (to_end) { /* If we want to scroll to the end, including horizontal scrolling, * then we just create a mark with right gravity at the end of the * buffer. It will stay at the end unless explicitely moved with * gtk_text_buffer_move_mark. */ gtk_text_buffer_create_mark (buffer, "end", &iter, FALSE); /* Add scrolling timeout. */ return g_timeout_add (50, (GSourceFunc) scroll_to_end, textview); } else { /* If we want to scroll to the bottom, but not scroll horizontally, * then an end mark won't do the job. Just create a mark so we can * use it with gtk_text_view_scroll_mark_onscreen, we'll position it * explicitely when needed. Use left gravity so the mark stays where * we put it after inserting new text. */ gtk_text_buffer_create_mark (buffer, "scroll", &iter, TRUE); /* Add scrolling timeout. */ return g_timeout_add (100, (GSourceFunc) scroll_to_bottom, textview); } Though there are quite a few lines of comments, I still don't understand the logic in it,especially, what's the relation between an mark and the position of scroll bar?

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• Relation many-to-many with attributes : how ?

  - by mada

  Hi, Excuse me for my poor english in advance as it is not my mother tongue. Like in this example: http://www.xylax.net/hibernate/manytomany.html But i have in the table foo-bar 2 attributes which are not part of the primary or foreign keys.: one boolean(A) & one string(B). I know how to map it without attributes but not in this case. I have not found an answer in the documentation. I need to know please how to map it & what kind of collection i have to declare in my class Foo. Thanks in advance for your answer. I really appreciate the time given by you.

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• Java/JAXB: Unmarshall Xml to specific subclass based on an attribute

  - by Frothy

  Is it possible to use JAXB to unmarshall xml to a specific Java class based on an attribute of the xml? <shapes> <shape type="square" points="4" square-specific-attribute="foo" /> <shape type="triangle" points="3" triangle-specific-attribute="bar" /> </shapes> I would like to have a List of Shape objects containing a triangle and a square, each with their own shape-specific attribute. IE: abstract class Shape { int points; //...etc } class Square extends Shape { String square-specific-attribute; //...etc } class Triangle extends Shape { String triangle-specific-attribute; //...etc } I'm currently just putting all attributes in one big "Shape" class and it's less than ideal. I could get this to work if the shapes were properly named xml elements, but unfortunately I don't have control of the xml I'm retrieving. Thanks!

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• iterating through an array

  - by Farstucker

  Iterating though an array isn’t a problem but what if I only wanted to incremented only when the method is called? Im not even sure if this would work but is there an easier way of doing this int counter; string[] myArray = {"foo", "bar", "something", "else", "here"}; private string GetNext() { string myValue = string.Empty; if (counter < myArray.Length) { myValue = myArray [counter]; } else { counter = 0; } counter++; return myValue; }

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• .htaccess redirect umlaut domain

  - by Christian Engel

  I am trying to redirect requests from a umlaut domain to another domain. My following code works with ANY other domain, but not umlaut: <IfModule mod_rewrite.c> RewriteCond %{HTTPS} !=on RewriteCond %{HTTP_HOST} ^(www\.)?frankfurter-flöhe\.de/$ [NC] RewriteRule ^ http://kinderkultur-frankfurt.de/frankfurter-floehe-theaterprogramm.html [R=301,L] </IfModule> However, when I call the umlaut domain and copy it from google chromes address bar after that, I get this: http://xn--frankfurter-flhe-zwb.de/ Altough, if I use that obfruscated domain in my htaccess instead of the "real" umlaut domain, it doesn't work either. Does anybody have an idea how to match that domain?

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• How does Twitter for iPhone bookmarklet work?

  - by Igor Zevaka

  Twitter client (formerly Tweetie) allows you to define a bookmarklet in Safari that launches the app. I want to know which iPhone API allows you to register the protocol specifier (or whatever it's called) - in this case "tweetie:" - in order for this bookmarklet to work. The instructions can be found here and the bookmarklet itself is below. javascript:window.location='tweetie:'+window.location Clicking the above bookmark is the same as typing in "tweetie:http://google.com" into the address bar. This is obviously supported on the OS/Browser level, much the same as tel: URIs. Am I correct in understanding that developers can add arbitrary URI protocol specifiers as a part of app installation?

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• Safari's never-ending loading message when an iframe does not have a src

  - by Matthew Pennell

  I'm using @rem's jQuery :visited plugin to do something with visited links on a page. The plugin works by creating an invisible iframe, injecting the HTML source, and comparing the colour of links to see which have been visited. It works perfectly. The problem I have is that on Safari, the status bar message always hangs on "Loading (X-1) of X items" - i.e. it thinks there is still some resource still needing to be loaded. I've narrowed it down to this plugin, and the fact that it attaches the IFRAME element to the BODY before the src is set (or injected in this case). I've tried rearranging the code to set the src before the append happens, but that breaks the plugin's functionality. Anyone have any ideas how to fix this issue? It's not a major issue as the site still functions perfectly well, but it's an annoying glitch that could be confusing to users.

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