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  • c# GUI changing a listbox from another class

    - by SlowForce
    I've written a multithreaded server that uses tcplistener and a client handler class that controls input and output. I also have a GUI chat client. The chat client works fine and the console version of the server also works well. I have a start() method in the partial(?) Form class, which I run from a new thread when I click a button, that starts the TCP Listener and loops through and accepts socket requests. For every request a new ClientHandler object is created and the socket is passed to this object before being used in a new handler thread. The ClientHandler is a different class to the form and I'm having real problems writing data to the Listbox in the Form class from within the ClientHandler class. I've tried a few different ways of doing this but none of them work as they involve creating a new form class within the ClientHandler. Any help or advice on what I should be reading to help me would be really appreciated.

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  • Maven archetype from project - how to preserve package names ?

    - by lisak
    Hey, I'm trying to grab my project and generate an Archetype from it via : archetype:create-from-project The thing is, that my project has src/main/java package structure com.sample.app, but the archetype must have it as I want (org.example.game) ... Ideally as user want when generating the project from archetype, but that is impossible I suppose. It would have to grab groupId and artifactId and generate archetype-resources/src/main/java based on this input. Anyway, that's why there is this argument I suppose : packageName mvn archetype:create-from-project -DpackageName=org.example.game But it doesn't work and there is still archetype-resources/src/main/java/org/sample/game ..

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  • dropping user to IRB after reading from pipe

    - by aurelian
    I have this script that drops the user to an IRB session when executed. All good, but when I use *nix pipes to get the input (e.g. with cat), the IRB session ends immediately. I could reduce the script (let's call it myscript.rb) to the following: require 'irb' if $stdin.stat.size 0 @text = $stdin.read else @text= "nothing" end ARGV.clear IRB.start When executed like: ruby myscript.rb, I end up in the IRB session (as expected). But (assuming foo.txt exists in the cwd): cat foo.txt | ruby myscript.rb will just print the IRB prompt and then the IRB session is closed (I'm being dropped to $bash). Any known workarounds or ideas? BTW: it has the same behavior on ruby 1.8.7 as well as on 1.9.2.

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  • Appropriate high level language to deal with binary data

    - by fortran
    Hi, I need to write a small tool that parses a textual input and generates some binary encoded data. I would prefer to stay away from C and the like, in favour of a higher level, (optionally) safer, more expressive and faster to develop language. My language of choice for this kind of tasks usually is Python, but for this case dealing with binary raw data can be problematic if one isn't very careful with the numbers being promoted to bignums, sign extensions and such. Ideally I would like to have records with named bitfields that are portable to be serialised in a consistent manner. (I know that there's a strong point in doing it in a language I already master, although it isn't optimal, but I think this could be a good opportunity to learn something new). Thanks.

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  • A beginner's JSF question about form validation

    - by Nitesh Panchal
    Hello, I am having a form and many input elements in that. I want certain fields to be validated, so i keep validateLenth etc on those. And i want some fields to not be validated. For example, i have contact information and address information both on the same page. I want to treat contact information as one group. So if some fields are invalid they should not be submitted and address information to be independent of contact information. Thus, if address information is corrected it should be submitted. I have one form only on the page but two buttons, one for address and one for contact. Simply put :- What is the equivalent of validationGroup of Asp.Net in JSF?

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  • How can I possibly sort this in JavaScript?

    - by orokusaki
    I've been pounding my head on the wall trying to figure out how to sort this in JavaScript (I have to work with it in this format unfortunately). I need to sort it based on Small, Medium, Large, XL, XXL (Small ranking the highest) in each variationValues size field. The problem is that I need to sort the variationCosts and variationInventories at the same time to match the new order (since each value in order corresponds to the values in the other fields :( Input I have to work with var m = { variationNames: ["Length", "Size" ], variationValues: [ ["26.5\"", "XXL"], ["25\"", "Large"], ["25\"", "Medium"], ["25\"", "Small"], ["25\"", "XL"], ["25\"", "XXL"], ["26.5\"", "Large"], ["26.5\"", "Small"], ["26.5\"", "XL"] ], variationCosts: [ 20.00, 20.00, 20.00, 20.00, 20.00, 20.00, 20.00, 20.00, 20.00 ], variationInventories: [ 10, 60, 51, 10, 15, 10, 60, 10, 15 ], parentCost: 20.00 }; Desired output var m = { variationNames: ["Length", "Size" ], variationValues: [ ["25\"", "Small"], ["26.5\"", "Small"], ["25\"", "Medium"], ["25\"", "Large"], ["26.5\"", "Large"], ["25\"", "XL"], ["26.5\"", "XL"] ["25\"", "XXL"], ["26.5\"", "XXL"], ], variationCosts: [ 20.00, 20.00, 20.00, 20.00, 20.00, 20.00, 20.00, 20.00, 20.00 ], variationInventories: [ 10, 10, 51, 60, 15, 15, 15, 10, 10 ], parentCost: 20.00 };

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  • Determining whether a file is a duplicate

    - by Todd R
    Is there a reliable way to determine whether or not two files are the same? For example, two files with the same size and type may or may not be the same binarilly (yeah, I know it's not really a word). I assume that comparing one or two checksums of the files will help, but I wonder: How reliable are checksums at determining whether two files are different; what are the chances of two different files having the same checksum? Would reliability increase by applying additional checksum comparisons? Which checksum algorithm(s) would be the most efficient and/or reliable? Any ideas, suggestions or thoughts are appreciated! P.S. The code for this is being written in Java running on a nix system, but generic or platform agnostic input is most helpful.

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  • jQuery add/remove row

    - by bocca
    I am trying to setup jQuery rows, with add/remove row functionality. I got started with online tutorial, http://jsbin.com/aciba that works fine. It only has input forms though. We need select to choose from. Now, I made some changes to accept selects as as well as inputs: http://jsbin.com/emata This does not work. Try selecting option 3 in cell 1, and press add "Add". The row added gets default "Cell 1" selected option to 1. What could be the reason?

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  • casting BSTR as char* in a dll; different results depnding on VB/C# caller.

    - by Toby Wilson
    I have a dll function that takes BSTR parameters. These are casted as char* before being used for other things. When the dll is called from VB code this works fine. However, when it is called from C# code, only the first character is pointed to. Both of these are excel addIns for Pre-2007 and 2007+ versions of Office, which call into a faster C++ AddIn. They actually call it directly, not through Excel. The VB function declaration looks like this: Private Declare Function Test Lib "ExcelAddIn.xll" (ByVal param As String) As String The C# function declaration looks like this: [DllImport("ExcelAddIn.xll", CharSet=CharSet.Ansi)] [return:MarshalAs(UnmanagedType.BStr)] private static extern string Test([MarshalAs(UnmanagedType.BStr)] string param); When debugging the dll and watching the input BSTR values, they appear to be correct from both; just the C# one only casts the first character. Charset=CharSet.Unicode makes no difference. Any ideas anyone?

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  • C# VS 2008 Build Configurations - using different classes for different builds

    - by evan
    I'm writing an application which has two classes that provide basically the same functionality but for different situations. I'd like to have three versions of the software - one where the user can change an ini file to configure the program to use one of the two classes, and then one version that only uses one of the two classes. Right now I have it working via an ini file, but I'd like to be able to build versions that don't include the code for the unneeded class at all. What is the best way to go about this? My current line of thinking is that since both classes derive from a common interface I'll just add a compile time conditional that looks at the active build configuration and decides whether to compile that class. What is the syntax to do that? Thanks in advance for your help and input!

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  • Usual hibernate performance pitfall

    - by Antoine Claval
    Hi, We have just finish to profile our application. ( she's begin to be slow ). the problem seems to be "in hibernate". It's a legacy mapping. Who work's, and do it's job. The relational shema behind is ok too. But some request are slow as hell. So, we would appreciate any input on common and usual mistake made with hibernate who end up with slow response. Exemple : Eager in place of Lazy can change dramaticly the response time....

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  • Dynamic parameters for XSLT 2.0 group-by

    - by Ophileon
    I got this input <?xml version="1.0" encoding="UTF-8"?> <result> <datapoint poiid="2492" period="2004" value="1240"/> <datapoint poiid="2492" period="2005" value="1290"/> <datapoint poiid="2492" period="2006" value="1280"/> <datapoint poiid="2492" period="2007" value="1320"/> <datapoint poiid="2492" period="2008" value="1330"/> <datapoint poiid="2492" period="2009" value="1340"/> <datapoint poiid="2492" period="2010" value="1340"/> <datapoint poiid="2492" period="2011" value="1335"/> <datapoint poiid="2493" period="2004" value="1120"/> <datapoint poiid="2493" period="2005" value="1120"/> <datapoint poiid="2493" period="2006" value="1100"/> <datapoint poiid="2493" period="2007" value="1100"/> <datapoint poiid="2493" period="2008" value="1100"/> <datapoint poiid="2493" period="2009" value="1110"/> <datapoint poiid="2493" period="2010" value="1105"/> <datapoint poiid="2493" period="2011" value="1105"/> </result> and I use this xslt 2.0 <?xml version="1.0" encoding="UTF-8"?> <xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:xs="http://www.w3.org/2001/XMLSchema" exclude-result-prefixes="xs" version="2.0"> <xsl:output method="xml" indent="yes"/> <xsl:template match="result"> <xsl:for-each-group select="datapoint" group-by="@poiid"> <node type="poiid" id="{@poiid}"> <xsl:for-each select="current-group()"> <node type="period" id="{@period}" value="{@value}"/> </xsl:for-each> </node> </xsl:for-each-group> </xsl:template> </xsl:stylesheet> to convert it into <?xml version="1.0" encoding="UTF-8"?> <node type="poiid" id="2492"> <node type="period" id="2004" value="1240"/> <node type="period" id="2005" value="1290"/> <node type="period" id="2006" value="1280"/> <node type="period" id="2007" value="1320"/> <node type="period" id="2008" value="1330"/> <node type="period" id="2009" value="1340"/> <node type="period" id="2010" value="1340"/> <node type="period" id="2011" value="1335"/> </node> <node type="poiid" id="2493"> <node type="period" id="2004" value="1120"/> <node type="period" id="2005" value="1120"/> <node type="period" id="2006" value="1100"/> <node type="period" id="2007" value="1100"/> <node type="period" id="2008" value="1100"/> <node type="period" id="2009" value="1110"/> <node type="period" id="2010" value="1105"/> <node type="period" id="2011" value="1105"/> </node> Works smoothly. Where I got stuck is when I tried to make it more dynamic. The real life input has 6 attributes for each datapoint instead of 3, and the usecase requires the possibility to set the grouping parameters dynamically. I tried using parameters <xsl:param name="k1" select="'poiid'"/> <xsl:param name="k2" select="'period'"/> but passing them to the rest of the xslt is something that I can't get right. The code below doesn't work, but clarifies hopefully, what I'm looking for. <xsl:template match="result"> <xsl:for-each-group select="datapoint" group-by="@{$k1}"> <node type="{$k1}" id="@{$k1}"> <xsl:for-each select="current-group()"> <node type="{$k2}" id="@{$k2}" value="{@value}"/> </xsl:for-each> </node> </xsl:for-each-group> </xsl:template> Any help appreciated..

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  • CommandManager "cannot resolve symbol"

    - by Budda
    After adding "RelayCommand" class (that uses CommandManager class) into my Silverlight App I've got an error: The name 'CommandManager' does not exist in the current context This class is a member of System.Windows.Input namespace that is in PresentationCore.dll assembly. The problem is that I can't add this dll into my app... I am having a strange assumption: this class (CommmandManager) can't be used in the Silverlight. Am I right? How can I implement MVVM-pattern (http://msdn.microsoft.com/en-us/magazine/dd419663.aspx)? Thanks.

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  • What are the common patterns in web programming?

    - by lankerisms
    I have been trying to write my first big web app (more than one cgi file) and as I kept moving forward with the rough prototype, paralelly trying to predict more tasks, this is the todo that got accumulated (In no particular order). * Validations and input sanitizations * Object versioning (to avoid edit conflicts. I dont want hard locks) * Exception handling * memcache * xss and injection protections * javascript * html * ACLs * phonetics in search, match and find duplicates (for form validation) * Ajaxify!!! (I have snipped off the project specific items.) I know that each todo will be quite tied up to its project and technologies used. What I am wondering though, is if there is a pattern in your todo items as well as the sequence in which you experienced guys have come across them.

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  • How to call/use a value converter inverted

    - by Soko
    Is it possible to use a converter the "wrong" way around? In other words: can I swap source and target? Here's an example: I created a simple IValueConverter called NullableDecimalToStringConverter which converts an input if "" into null and a number into decimal. I use it to bind a TextBox in my WPF view to a decimal? property in my ViewModel. In another context I'd like to convert a NullableDecimal into a String in the same way... Is it possible to simply use the existing NullableDecimalToStringConverter inverted? One method is to use the parameter of the converter to tell the converter which way it should convert. But is there a .NET build in way to do such a thing? Another way would be to build a base class with both conversion methods and two separate converter which call the base class methods...

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  • click multiple times a submit button

    - by Olga Anastasiadou
    Hi all, I encountered a problem that I can't solve. My point is to "click" my sybmit button and every time increase a counter, while this counter reach 10. For the first time it works, but this is it! My test code is below : <form name="testForm" method="post"> <?php $cnt=0; ?> <input type="submit" name="next" id="next" value="NEXT"/> <?php if(isset($_POST['next'])){ if($cnt< 10){ echo $cnt.' --> '; $cnt++; echo $cnt; } } ?> </form> Only 0 -- 1 is printed, every time... please help!! Thanks

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  • Haskell: writing the result of a computation to file

    - by peterwkc
    I have a function which creates a tuple after computation, but I would like to write it to file. I know how to write to a file using writeFile, but do not know how to combine the computation and monads IO together in the type signature. This is my code. invest :: ([Char]->Int->Int->([Char], Int) ) -> [Char]->Int->Int->([Char], Int) invest myinvest x y = myinvest x y myinvest :: [Char]->Int->Int->([Char], Int) myinvest w x y | y > 0 = (w, x + y) | otherwise = error "Invest amount must greater than zero" where I have a function which computes the maximum value from a list, but I want this function to receive input from a file, and then perform the computation of maximum value. maximuminvest :: (Ord a) => [a] -> a maximuminvest [] = error "Empty Invest Amount List" maximuminvest [x] = x maximuminvest (x:xs) | x > maxTail = x | otherwise = maxTail where maxTail = maximuminvest xs Please help. Thanks.

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  • Newbie question about file formatting in Python

    - by user568041
    I'm writing a simple program in Python 2.7 using pycURL library to submit file contents to pastebin. Here's the code of the program: #!/usr/bin/env python2 import pycurl, os def send(file): print "Sending file to pastebin...." curl = pycurl.Curl() curl.setopt(pycurl.URL, "http://pastebin.com/api_public.php") curl.setopt(pycurl.POST, True) curl.setopt(pycurl.POSTFIELDS, "paste_code=%s" % file) curl.setopt(pycurl.NOPROGRESS, True) curl.perform() def main(): content = raw_input("Provide the FULL path to the file: ") open = file(content, 'r') send(open.readlines()) return 0 main() The output pastebin looks like standard Python list: ['string\n', 'line of text\n', ...] etc. Is there any way I could format it so it looks better and it's actually human-readable? Also, I would be very happy if someone could tell me how to use multiple data inputs in POSTFIELDS. Pastebin API uses paste_code as its main data input, but it can use optional things like paste_name that sets the name of the upload or paste_private that sets it private.

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  • Getting print data - Windows (Redmon)

    - by Anurag Ramdasan
    I am trying to develop an app to retrieve print data, edit its content and then print the data. I am using RedMon for that purpose. But all the tutorials I have seen online as of now relates to storing the data into a PDF using RedMon. I want to be able to configure RedMon on a windows platform such that it writes the entire print data(the data that is bound to appear on the printing paper) as it is into a .txt file or maybe provide directly as an input to the java app that I have made. I have been unsuccessful in finding a solution for this till now. Is this achievable?

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  • Javascript form validation events

    - by user307922
    Hi All, I am making a small form for a php app and had a question regarding javascript validation. What is the best event to run the javascript validation on the input value? Is it the "focusout" event? I used "focusout" to originally but it creates problems when the user hits enter while they are still focused on any particular field in the form. Should I run the js validation when the user clicks submit? Just looking for some advice. Thanks! Chuck

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  • Watir question regarding selecting a hidden dropdown.

    - by AJ
    Hi, I have two dropdowns, the second dropdown does not show until a choice is made from the first one. Using watir, i can select the first dropdown, and when i watch it, the second one becomes active, but it cannot select it. i just tried the regular select_list using name and id. Here is the code for the second drop down. <td> <input type="hidden" value="1" name="list" id="list"> <script type="text/JavaScript" language="JavaScript"></script> <select> <option value="">1</option> <option value="2">2</option> <option value="3">3</option> </select> </td> I've also notice the value for the hidden field change as i select different options. Thanks for any help

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  • How to select a MenuItem programatically

    - by Shaung
    I am trying to add a global shortcut to a gtk.MenuItem which has a sub menu. Here is my code: import pygtk, gtk import keybinder dlg = gtk.Dialog('menu test') dlg.set_size_request(200, 40) menubar = gtk.MenuBar() menubar.show() menuitem = gtk.MenuItem('foo') menuitem.show() menubar.append(menuitem) mitem = gtk.MenuItem('bar') mitem.show() menu = gtk.Menu() menu.add(mitem) menu.show() menuitem.set_submenu(menu) def show_menu_cb(): menubar.select_item(menuitem) keybinder.bind('<Super>i', show_menu_cb) dlg.vbox.pack_start(menubar) dlg.show() dlg.run() When I press the key menu pops up, I can then select items in the sub menu or press Esc to make it disappear. But after that the menuitem keeps selected and other windows never get input focus again. I have to click on the menuitem twice to get everything back normal.

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  • ASP.Net MVC - bulk / batch insert with through controller

    - by user610358
    guys, I need to make a view which will support bulk insert. In my mvc app, I am using repository patern with entity framework for. I am only having problem on how I will going to retrive the values of the model. There will be multiple model inpouts inside the view. I am sure that I am going to use foreach or for loop but how I am going to retrive the input values form view into controller. any help would be appreciated. thanks.

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  • Rails table inheritance issue

    - by Tristan O'Neil
    I've setup some models in the table inheritance fashion and everything seems to be all fine and dandy. But, when I use a collection select field to select values from one of the models it saves it but it saves the ID of the data and not the actual value of the data. So when I try to display the value on the show view it just shows the corresponding ID and not the actual value. Here is my setup. I'm using formtastic as a side note. View <%= show_field "County", @company.county %> Form <%= f.input :county, :label => 'County', :as => :select, :collection => County.find(:all) %> Base Model class Tag < ActiveRecord::Base before_create :set_type before_update :set_type attr_accessible :type, :name, :category belongs_to :company def set_type self.type = self.category end end Inherited Model class County < Tag end

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  • Why doesn't JFreeCharts correctly connect the points in my xy-line graph?

    - by Javajava
    /Each letter A,T,G,C represents a direction for the plot to graph. Specifically, “A” means move right, “T” is move down, “C” is move up, and “G” is move left. When the applet reads A,T,C, it plots the graph correctly. However, when I plot G, the graph is messed up. When I input "ACACACA," the graph is like a rising staircase. When I input "gtgtgt," the graph should look like a staircase, but it looks like a lightning bolt instead/ /This is all one code... i don't know why it's all split up like this:/ import java.applet.Applet; import java.awt.*; import java.awt.event.*; import java.util.Scanner.*; import java.jfree.chart.*; import java.jfree.data.xy.*; import java.jfree.chart.plot.PlotOrientation; public class If_Graph extends Applet implements ActionListener{ Panel panel; TextArea textarea, outputArea; Button move; String thetext; Scanner reader = new Scanner(System.in); String thetext2; int size,p,q; int x,y; public void init(){ setSize(500,500); //set size of applet panel = new Panel(); add(panel); setVisible(true); textarea= new TextArea(10,20); add(textarea); move=new Button("Graph"); move.addActionListener(this); add(move); } public void actionPerformed(ActionEvent e) { XYSeries series = new XYSeries("DNA Walk"); x= 0; y = 0; series.add(x,y); if(e.getSource() == move) { thetext=textarea.getText(); //the text is the DNA bases pasted thetext=thetext.replaceAll(" ",""); //removes spaces thetext2 = ""; for(int i=0; i<thetext.length(); i++) { char a = thetext.charAt(i); switch (a) { case 'A': //moves right x+=1; y+=0; series.add(x,y); break; case 'a': x+=1;y+=0; series.add(x,y); break; case 'C': //moves up x+=0; y+=1; series.add(x,y); break; case 'c': x+=0; y+=1; System.out.println(x + "," + y); series.add(x,y); break; case 'G': //move left x-=1; y+=0; series.add(x,y); System.out.println("G is: "+ x +"," +y); break; case 'g': x-=1; y+=0; System.out.println("g is: " +x + "," + y); series.add(x,y); break; case 'T': //move down x+=0; y-=1; series.add(x,y); System.out.println("T is: "+ x +"," +y); break; case 't': x+=0; y-=1; series.add(x,y); System.out.println("t is: "+ x +"," +y); break; default: // series.add(0,0); break; } } XYDataset xyDataset = new XYSeriesCollection(series); JFreeChart chart = ChartFactory.createXYLineChart ("DNA Random Walk", "", "", xyDataset, PlotOrientation.VERTICAL, true, true, false); ChartFrame frame1=new ChartFrame("DNA Random Walk",chart); frame1.setVisible(true); frame1.setSize(300,300); outputArea.setText(thetext2); } } }

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