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  • Qt: Writing plugins for other applications

    - by Rasmus Faber
    I am writing a plugin for another application. I want to support the plugin on multiple platforms, so I am strongly considering using Qt. The plugin needs to be able to show some basic GUI. The plugin interface does not in any way handle GUI - it is just a simple DLL/shared library specified with a C-header file. Can I use Qt inside such a shared library? The calling application might or might not be using Qt itself. Any hints on what to do? Do I need to run a QApplication event-loop in a separate thread? Or can I just call the event-loop myself while waiting for input? (I only need modal dialogs).

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  • Debugging segfault on swig/python/c++

    - by Pradyot
    I am trying to figure out what the best way to debug a segault with swig/python/c++. A core file is being generated. I have a basic MessageFactory(defined in c++ that provides a simple interface to accept a few strings as input and return a string as output). This interface is then specified in a .i file. swig is used to generate Wrapper.cpp as well as a MessageFactory.py from the .i file. This along with supporting files is compiled into a dynamic lib. The point of failure , is when the MessageFactory is instantiated within python code. Any suggestions on how I can go about debugging this? I've tried running the script within pdb, what I know from that is import on the generated MessageFactory.py is whats causing the seg-fault.

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  • XSLT transformations in Ruby and JRuby

    - by jpatokal
    Simple question: are there any solid XSLT libraries that work in both Ruby and JRuby? REXML works in both, but does not have XSLT support. ruby-xslt doesn't work in JRuby. The latest Nokogiri betas do support JRuby, but the support is still buggy and throws occasional NullPointerExceptions for XML input that works fine in Ruby. (In particular, any transforms that don't result in valid XML cause it to barf, even if xsl:output is set to 'text'!) JXslt is just a wrapper for Java's Xalan/Saxon and doesn't work in Ruby. Please tell me I'm missing something?

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  • Stretch column table in Primefaces

    - by Orange91
    How I can prevent to stretch table when I input long text: Screen: http://zapodaj.net/71821572f2445.jpg.html Meyby is it possible to make the text lines stretched row horizontally? My fragment example table: <p:dataTable id="table" styleClass="table" value="#{userMB.allInactive}" var="inactive" paginator="true" rows="15" rowKey="#{inactive.id}" selection="#{userMB.user}" selectionMode="single" > <f:facet name="header"> Lista kont nieaktywnych </f:facet> <p:column headerText="#{msg.firstName}"> <h:outputText value="#{inactive.firstName}" /> </p:column> I tried <p:column headerText="#{msg.firstName}" width="20px"> styleClass for column: <p:column styleClass="column" headerText="#{msg.firstName}" width="20px"> .column { width: 20px; } but I do not see any change, it does not work.

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  • iOS 5 fixed positioning and virtual keyboard

    - by jeffc
    I have a mobile website which has a div pinned to the bottom of the screen via position:fixed. All works fine in iOS 5 (I'm testing on an iPod Touch) until I'm on a page with a form. When I tap into an input field and the virtual keyboard appears, suddenly the fixed position of my div is lost. The div now scrolls with the page as long as the keyboard is visible. Once I click Done to close the keyboard, the div reverts to its position at the bottom of the screen and obeys the position:fixed rule. Has anyone else experienced this sort of behavior? Is this expected? Thanks.

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  • Pipe less to emacs

    - by Steve
    When viewing piped output to Less, sometimes I'd like to be able to view it in Emacs in order to get syntax highlighting and use emacs commands for searching, marking, copying, etc. I see that Less has a v command that can be used to open the currently viewed file in $EDITOR. Unfortunately this doesn't work when viewing piped input. Also, I don't know how to get Emacs to display stdin as a read-only document. So, is it possible to set up Less with something like v but that pumps the current buffer into Emacs as a read-only file? Thanks.

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  • Saving page as PDF or as HTML but with all entries

    - by Fincha
    Hello every one :) I wont to create a pdf from a form on my page, but the Problem is, I need it excactly like the page with form, all entires. So I have for example 2 Input Fields, 7 Radio, 2 Checkboxes, and as result i need a PDF with the same sructure, but if someone check the checkbox, it must be saved in pdf. I have tryed to save the html content of the page on submit, and save it first in html file, but the problem is, my selections woundn't be saved. The result must have the same as i would print my form. I hope someone can help. PS: I using PHP and jQuery

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  • jQuery plugin, return value from function

    - by Marius
    Hello there, Markup: <input type="text" name="email" /> Code: $(':text').focusout(function(){ $(this).validate(function(){ $(this).attr('name'); }); }); Plugin: (function($){ $.fn.validate = function(type) { return this.each(function(type) { if (type == 'email') { matches = this.val().match('/.+@.+\..{2,7}/'); (matches != null) ? alert('valid') : alert('invalid'); } /*else if (type == 'name') { } else if (type == 'age') { } else if (type == 'text') { }*/ else { alert('total failure'); } }); }; })(jQuery); The problem is that when I execute the code above, it runs the plugin as if type was a string: "function(){ $(this).attr('name'); });" instead of executing it as a function. How do I solve this? Thank you for your time. Kind regards, Marius

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  • Design pattern for cost calculator app?

    - by Anders Svensson
    Hi, I have a problem that I’ve tried to get help for before, but I wasn’t able to solve it then, so I’m trying to simplify the problem now to see if I can get some more concrete help with this because it is driving me crazy… Basically, I have a working (more complex) version of this application, which is a project cost calculator. But because I am at the same time trying to learn to design my applications better, I would like some input on how I could improve this design. Basically the main thing I want is input on the conditionals that (here) appear repeated in two places. The suggestions I got before was to use the strategy pattern or factory pattern. I also know about the Martin Fowler book with the suggestion to Refactor conditional with polymorphism. I understand that principle in his simpler example. But how can I do either of these things here (if any would be suitable)? The way I see it, the calculation is dependent on a couple of conditions: 1. What kind of service is it, writing or analysis? 2. Is the project small, medium or large? (Please note that there may be other parameters as well, equally different, such as “are the products new or previously existing?” So such parameters should be possible to add, but I tried to keep the example simple with only two parameters to be able to get concrete help) So refactoring with polymorphism would imply creating a number of subclasses, which I already have for the first condition (type of service), and should I really create more subclasses for the second condition as well (size)? What would that become, AnalysisSmall, AnalysisMedium, AnalysisLarge, WritingSmall, etc…??? No, I know that’s not good, I just don’t see how to work with that pattern anyway else? I see the same problem basically for the suggestions of using the strategy pattern (and the factory pattern as I see it would just be a helper to achieve the polymorphism above). So please, if anyone has concrete suggestions as to how to design these classes the best way I would be really grateful! Please also consider whether I have chosen the objects correctly too, or if they need to be redesigned. (Responses like "you should consider the factory pattern" will obviously not be helpful... I've already been down that road and I'm stumped at precisely how in this case) Regards, Anders The code (very simplified, don’t mind the fact that I’m using strings instead of enums, not using a config file for data etc, that will be done as necessary in the real application once I get the hang of these design problems): public abstract class Service { protected Dictionary<string, int> _hours; protected const int SMALL = 2; protected const int MEDIUM = 8; public int NumberOfProducts { get; set; } public abstract int GetHours(); } public class Writing : Service { public Writing(int numberOfProducts) { NumberOfProducts = numberOfProducts; _hours = new Dictionary<string, int> { { "small", 125 }, { "medium", 100 }, { "large", 60 } }; } public override int GetHours() { if (NumberOfProducts <= SMALL) return _hours["small"] * NumberOfProducts; if (NumberOfProducts <= MEDIUM) return (_hours["small"] * SMALL) + (_hours["medium"] * (NumberOfProducts - SMALL)); return (_hours["small"] * SMALL) + (_hours["medium"] * (MEDIUM - SMALL)) + (_hours["large"] * (NumberOfProducts - MEDIUM)); } } public class Analysis : Service { public Analysis(int numberOfProducts) { NumberOfProducts = numberOfProducts; _hours = new Dictionary<string, int> { { "small", 56 }, { "medium", 104 }, { "large", 200 } }; } public override int GetHours() { if (NumberOfProducts <= SMALL) return _hours["small"]; if (NumberOfProducts <= MEDIUM) return _hours["medium"]; return _hours["large"]; } } public partial class Form1 : Form { public Form1() { InitializeComponent(); List<int> quantities = new List<int>(); for (int i = 0; i < 100; i++) { quantities.Add(i); } comboBoxNumberOfProducts.DataSource = quantities; } private void comboBoxNumberOfProducts_SelectedIndexChanged(object sender, EventArgs e) { Service writing = new Writing((int) comboBoxNumberOfProducts.SelectedItem); Service analysis = new Analysis((int) comboBoxNumberOfProducts.SelectedItem); labelWriterHours.Text = writing.GetHours().ToString(); labelAnalysisHours.Text = analysis.GetHours().ToString(); } }

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  • Why is this codes output an Error?

    - by Ari Susanto
    I am a newbie on php writing. In the my first trying, I get a problem on input a html tag to php. This code output an error: <?php $a="Begin"; $b=12; echo $b . " " . $a . " " . "This is php file <br/>"; echo strlen($a); echo strpos($a,"in") . "<br/>"; echo addcslashes($a,"i")"; ?> this is the error message I get: Parse error: syntax error, unexpected '"', expecting ',' or ';' in /home/specials/public_html/bextool.com/1.php on line 7 Is there any body who can explain about it?

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  • jquery value of textarea

    - by Elliott
    Hi, I have the code below, which sends the value of the textarea and either gets a fail or Successful response, for now I just check if it says "hello". function postdata() { $.ajax({ type: "POST", dataType: "text", url: "makepost.php", data: "post_text=" + $("#post_text").val(), cache: false, success: function(reply_text) { if (reply_text.indexOf("Successful") >= 0) { alert("Post Made"); } else { alert(reply_text); } } }); } <textarea rows="3" cols="25" id="post_text" ></textarea><br /> <input type="submit" id="post_bttn" value="Post" onclick="postdata(); return false;"> I have also tested just echo'ing out the value of the textarea, and all the time it is jus blank. Although in firebug it shows that I have sent that text. Any ideas? Thanks :)

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  • How can I allow users to switch data sources for an SSRS report?

    - by fatcat1111
    I have two SQL Server databases with identical schemas, but different data. I also have SSRS generating reports, in native mode, for one of the databases. All reports the same shared data source. I would like to allow users to get reports for the other database. I created a second shared data source for the second database. Modifying the reports to use this second data source results in reports as expected. Because the RDLs are the same, except for the data source, and because I don't want to maintain what are basically duplicate reports, I'm looking for a way to dynamically switch data sources, depending on user input. Is there an easy means of accomplishing this? An existing solution would be best. Barring that, can the RDL's data source be parametrized? Or, can the RDS's connection string be parametrized?

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  • Confusion regarding laziness

    - by Abhinav Kaushik
    I have a function myLength = foldl (\ x _ -> x + 1) 0 which fails with stack overflow with input around 10^6 elements (myLength [1..1000000] fails). I believe that is due to the thunk build up since when I replace foldl with foldl', it works. So far so good. But now I have another function to reverse a list : myReverse = foldl (\ acc x -> x : acc) [] which uses the lazy version foldl (instead of foldl') When I do myLength . myReverse $ [1.1000000]. This time it works fine. I fail to understand why foldl works for the later case and not for former?

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  • How do I specify MSBuild to execute command-line calls in ascii not unicode

    - by Ben L
    I'm attempting to target VC7.1 (visual studio 2003 sp1) from Visual Studio 2010. I'm so close to setting it to work. But when I build, I get this error. 1------ Build started: Project: AnExample, Configuration: Release Win32 ------ 1 Microsoft (R) 32-bit C/C++ Standard Compiler Version 13.10.6030 for 80x86 1 Copyright (C) Microsoft Corporation 1984-2002. All rights reserved. 1 1 cl ÿ_/ 1 1cl : Command line warning D4024: unrecognized source file type 'ÿ_/', object file assumed 1 Microsoft (R) Incremental Linker Version 7.10.6030 1 Copyright (C) Microsoft Corporation. All rights reserved. 1 1 /out:.exe 1 ¦/ 1LINK : fatal error LNK1181: cannot open input file ' ¦/.obj' I know this is unsupported but I thought I'd give it a go. Does anyone know how to force the output from msbuild to be ascii or if this is the problem? There were some errors like this years ago related to the DDK acorrding to some other forums. Thanks.

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  • How to write outline data into .otf files?

    - by Sorush Rabiee
    I need to edit or completely replace outline data (bezier curves) of OpenType fonts. the input data is an EPS file that i have to write it into one specified glyph of an otf file with a certain scaling. (The glyph is specified by PostScript name OR Unicode value.) I need something like an encoder (or just a library of file structure of OpenType)? where to find about structure of otf and ttf files? Note: python-realated tools and libraries are performed :-?

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  • Import / include assigned variables in Jinja2

    - by Brian M. Hunt
    In Jinja2, how can one access assigned variables (i.e. {% set X=Y %}) within files incorporated with include? I'd expect the following to work given two Jinja2 files: A.jinja: Stuff {% include 'B.jinja' -%} B has {{ N }} references B.jinja: {% set N = 12 %} I'd expect that A.jinja, when compiled with Jinja2, would produce the following output: Stuff B has 12 references However, it produces: Stuff B has references I'd be much obliged for any input as to how to access the Jinja2 variables, such as N above, in the file that includes the file where N is set. Thank you for reading. Brian

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  • How to preserve hyperlink when submitting via php form into MySQL

    - by TheTub
    Hi All, I've created a form that stores free text fields into a MySQL database. All works fine and the data is displayed back as intended when viewed. Except for one niggle. In an attempt to prevent malicious attacks I have used mysql_real_escape_string to remove any unwanted code from the input. However, I need to be able to preserve hyperlinks and basic html. For example, I want to store the following: <p align="left">Please follow this <a href="link.html">link</a></p> But the link is being stored as \"link.html\" as the quotes are being escaped. How can I preserve this link and other html? Many thank TT

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  • UIAlertView crashing on undocumented method

    - by morticae
    Our app has been crashing with a frequency of roughly 1 in 1,500 launches due to a bug that is proving elusive. The relevant portion of the stack trace is included. It's being fired as a callback so I have no reference for where it's occurring in my own code. It looks like what's going on is there is a UIViewAnimationState object that is calling UIAlertView's private method (_popoutAnimationDidStop:finished:). Only problem is, it appears the UIAlertView has been dealloced by this point. I don't do anything weird with alert views. I throw them up, and I wait for user input. They are all shown before being released. Anyone encountered this? At this point, I'm leaning toward it being an Apple bug. Thread 0 Crashed: 0 libobjc.A.dylib 0x3138cec0 objc_msgSend + 24 1 UIKit 0x326258c4 -[UIAlertView(Private) _popoutAnimationDidStop:finished:] 2 UIKit 0x324fad70 -[UIViewAnimationState sendDelegateAnimationDidStop:finished:] 3 UIKit 0x324fac08 -[UIViewAnimationState animationDidStop:finished:] 4 QuartzCore 0x311db05c run_animation_cal lbacks

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  • Does there exist an "idea checkout system" on the Internet?

    - by TimeSpace Traveller
    Greetings. I would like to ask the following question: is there anything on the Internet like an "idea checkout" system? Situation: I'm a software developer. Since my current job has started 2 years ago, my mentor at that time has pointed me to the open source world. I have only put little time to look at some of the open source projects, let alone any contribution. However, it is my wish to start developing something outside of the work. Well, except a little problem. I don't know what to develop! It is not about the technical knowledge; the problem is that, I am not a creative person. I am very good at analytical thinking, as well as debugging skills. When being told by my work partners to develop a solution, I could get it done without a problem. However, outside of work, I have no idea what to develop. When I look at the Internet, it seems that so many people have already been developing on so many interesting stuff, making me wonder what I could develop, so that I would not reinvent something already existed. That starts to make me wonder. On the Internet, is there anything like an "idea checkout" system or society? For example, some people would throw in as a software idea, and the system would keep it as an "inventory"; later, a potential software developer would "check out" the idea, just a how people would check out a book from the library. Then, the developer would check the "idea" back in, with a certain kind of work-in-progress or developed software, thus becoming an open-source project. I have just noticed that here at stackoverflow, there is a "Project-Ideas" tag, so perhaps that can provide me some ideas on what to develop; still, my wonder is about a system that people would provide ideas, and people would check out ideas to develop / implement into actual solution. Is there such a system or society existing anywhere on the Internet? Any input is welcome! Thank you very much. Update: Thank you for everyone who has answered my question. Certainly, "getting idea" is part of my problem; as a software developer, however, I'm concerned more than just "getting idea". What I am concerned more, as I have commented, is about the existence of such an idea exchanging ecosystem, capable to initiate open-source projects. I'll put an example here. Say, person A has an idea of music search program, but not search by the attributes of the music (composer, singer, publisher, lyrics, etc.); instead, he wants a program (and a database) to search a piece of music by melody. Very often, people only remember a piece of music by its melody, not even the name of the music (e.g. the music he wants was only once heard in a bookstore, but the melody just gets stuck in his head!). In order to find that piece, normally he would just need to blindly search for it, and spent a long time to do so. A search by melody would enable person A to find the piece much quicker. However, he would not want to personally work on it, not just because of the complexity (he is not a musician and/or programmer, knowing almost nothing about music systems in computer, search algorithms, etc.), but also legal issues (RIAA??), thus he would just like to keep the idea at some place, and let other people to work on that. Now, a developer (person B) may be at the same stage as I am right now, wishing to find something to develop, but not having an idea. With the idea exchanging ecosystem, person B will search, and somehow discover person A's music search idea, and feeling interested enough to work on it. So he "checks out" the idea, start working on it (at least a skeleton), and checks back in with the progress. An open-source project starts from here, fulfilling person A's wish, and person B's programming desire. The above is just an example, because there are already such systems exist on the Internet, but it illustrates what I think about the idea exchange system in my mind. My main concern is about idea exchanging ecosystem, not at personal and unorganized level, but at a semi-organized protocol that's specifically for software developers, having actual projects coming out as the fruits. Not about "projects", but about "ideas and product of ideas". Hopefully that would clear up some of the original idea of this question. Any input is welcome; in fact, I would like to hear as many people as possible how everyone thinks about this. Thank you very much!

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  • Flash and ActionScript

    - by Sonesh Dabhi
    I am not a flash/actionscript developer and I need to achieve a very small task in flash . I need to display user audio input level in flash . I found that I can do that using action script as below . I also checked this link . I have no idea what tools I need to use and generate a swf file . Any help highly appreciated . this.mic = Microphone.getMicrophone(); this.micTimer.addEventListener(TimerEvent.TIMER,this.timerHandler); this.micTimer.start(); this.mic.setLoopBack(true); return; public function timerHandler(event:TimerEvent):void { this.micVolume.setProgress(this.mic.activityLevel,100) return; }

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  • Possible to view T-SQL syntax of a stored proc-based SqlCommand?

    - by mconnley
    Hello! I was wondering if anybody knows of a way to retrieve the actual T-SQL that is to be executed by a SqlCommand object (with a CommandType of StoredProcedure) before it executes... My scenario involves optionally saving DB operations to a file or MSMQ before the command is actually executed. My assumption is that if you create a SqlCommand like the following: Using oCommand As New SqlCommand("sp_Foo") oCommand.CommandType = CommandType.StoredProcedure oCommand.Parameters.Add(New SqlParameter("@Param1", "value1")) oCommand.ExecuteNonQuery() End Using It winds up executing some T-SQL like: EXEC sp_Foo @Param1 = 'value1' Is that assumption correct? If so, is it possible to retrieve that actual T-SQL somehow? My goal here is to get the parsing, etc. benefits of using the SqlCommand class since I'm going to be using it anyway. Is this possible? Am I going about this the wrong way? Thanks in advance for any input!

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  • translate by replacing words inside existing text

    - by Berry Tsakala
    What are common approaches for translating certain words (or expressions) inside a given text, when the text must be reconstructed (with punctuations and everythin.) ? The translation comes from a lookup table, and covers words, collocations, and emoticons like L33t, CUL8R, :-), etc. Simple string search-and-replace is not enough since it can replace part of longer words (cat dog ? caterpillar dogerpillar). Assume the following input: s = "dogbert, started a dilbert dilbertion proces cat-bert :-)" after translation, i should receive something like: result = "anna, started a george dilbertion process cat-bert smiley" I can't simply tokenize, since i loose punctuations and word positions. Regular expressions, works for normal words, but don't catch special expressions like the smiley :-) but it does . re.sub(r'\bword\b','translation',s) ==> translation re.sub(r'\b:-\)\b','smiley',s) ==> :-) for now i'm using the above mentioned regex, and simple replace for the non-alphanumeric words, but it's far from being bulletproof. (p.s. i'm using python)

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  • Added tagging to existing model, now how does its admin work?

    - by Oli
    I wanted to add a StackOverflow-style tag input to a blog model of mine. This is a model that has a lot of data already in it. class BlogPost(models.Model): # my blog fields try: tagging.register(BlogPost) except tagging.AlreadyRegistered: pass I thought that was all I needed so I went through my old database of blog posts (this is a newly ported blog) and copied the tags in. It worked and I could display tags and filter by tag. However, I just wrote a new BlogPost and realise there's no tag field there. Reading the documentation (coincidentally, dry enough to be used as an antiperspirant), I found the TagField. Thinking this would just be a manager-style layer over the existing tagging register, I added it. It complained about there not being a Tag column. I'd rather not denormalise on tags just to satisfy create an interface for inputting them. Is there a TagManager class that I can just set on the model? tags = TagManager() # or somesuch

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  • ASP.NET MVC 2 form submit route issue

    - by Tomaszewski
    Hi, i'm having this issue, in ASP.NET MVC 2 where I'm adding a drop down list on the master page and filling it with data from an abstract master controller. When an option is selected an submit button clicked, it reroutes you to a new page. so lets say the page lives on http://domain.com/landingPage i'm on: http://domain.com/landingPage i select option and submit takes me to http://domain.com/landingPage/Projects/FramedPage i select again and now the post tries to go to: http://domain.com/landingPage/Projects/landingPage/Projects/FramedPage because of the action="" i have set on the form tag. Any ideas on how to go about this? MasterPage: <form method="get" action="landingPage/Projects/FramedPage"> <%= Html.DropDownList("navigationList")%> <input id="navSubmitBtn" class="btnBlue" type="submit" value="Take Me There" /> </form> Projects Controller public ActionResult FramedPage(string navigationList) { ViewData["navLink"] = navigationList; return View(); } The problem i am having is that if I am ON that page

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  • Use eval to set unknown property in Python

    - by Mahi
    I have an User class, that has multiple properties inside it, and I also have addPoint method for User class, which allows user to input points into any of it's properties. However, there can be up to like 500 properties, everyone can have different ones, etc. So it would be a pain in the ass to code every property with "if: - elif:". Now this is what I tried to do, to make it much easier and cleaner: class User: def __init__(self): self.health = 0 self.speed = 0 def addPoint(self, property, amount): eval("self."+property) = eval("self."+property) + amount And now when I'd do fe. u = User() u.addPoint("health", 5) I would like it to do this: self.health = self.health + 5, and that's what I used the eval()s for. However, Python's just giving me error: can't assign to function call. I'm not trying to assign the eval() function call itself, I'm trying to assign the returned value from eval(), so how could I do this the easiest way?

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