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  • QuestionOrAnswer model?

    - by Mark
    My site has Listings. Users can ask Questions about listings, and the author of the listing can respond with an Answer. However, the Answer might need clarification, so I've made them recursive (you can "answer" an answer). So how do I set up the database? The way I have it now looks like this (in Django-style models): class QuestionOrAnswer(Model): user = ForeignKey(User, related_name='questions') listing = ForeignKey(Listing, related_name='questions') parent = models.ForeignKey('self', null=True, blank=True, related_name='children') message = TextField() But what bugs me is that listing is now an attribute of the answers as well (it doesn't need to be). What happens if the database gets mangled and an answer belongs to a different listing than its parent question? That just doesn't make any sense. We can separate it with polymorphism: QuestionOrAnswer user message created updated Question(QuestionOrAnswer) shipment Answer(QuestionOrAnswer) parent = ForeignKey(QuestionOrAnswer) And that ought to work, but now ever question and answer is split into 2 tables. Is it worth this overhead for clearly defined models?

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  • Different graphic cards drivers while booting from external media

    - by goran
    I am booting a certain system of mine with ubuntu 9.10 from external HDD. I am satisfied with the setup and it works fine, however I would like to modify it so that I can choose which graphic card drivers to load during the boot time. Specifically I would like to choose between: nvidia proprietary driver ati proprietary driver generic driver Currently if I am using proprietary drivers then dont boot into X, delete xorg.conf, start gdm and reconfigure the system using jockey (for hardware drivers). What would be the steps to make this (semi-)automatic and avoid restarting X?

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  • JQuery Autocomplete CSS not working?

    - by gath
    I am trying to implement JQuery Autocomplete pluggi using Django. I've been able to wire the thing together and I can actually see the result back in the HTML template. My problem is that the JQuery Autocomplete CSS doesn't seem to work. The results I get are not well formatted/styled, and they have no background and you cannot even select them. What is it that am missing? I have these three files in my media folder same folder: autocomplete.js dimensions.js autocomplete.css In my html template I have the following function: $(function(){ setAutoComplete("tags", "tagResults", "/taglookup/?query="); }); My textfield looks like this; <input type="text" name="tags" value=""> Where do I put the tagResults in my HTML template document? Every time I try to introduce a DIV with id="tagResults", JQuery throws an error. Any ideas?

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  • Is str.replace(..).replace(..) ad nauseam a standard idiom in Python?

    - by meeselet
    For instance, say I wanted a function to escape a string for use in HTML (as in Django's escape filter): def escape(string): """ Returns the given string with ampersands, quotes and angle brackets encoded. """ return string.replace('&', '&amp;').replace('<', '&lt;').replace('>', '&gt;').replace("'", '&#39;').replace('"', '&quot;') This works, but it gets ugly quickly and appears to have poor algorithmic performance (in this example, the string is repeatedly traversed 5 times). What would be better is something like this: def escape(string): """ Returns the given string with ampersands, quotes and angle brackets encoded. """ # Note that ampersands must be escaped first; the rest can be escaped in # any order. return replace_multi(string.replace('&', '&amp;'), {'<': '&lt;', '>': '&gt;', "'": '&#39;', '"': '&quot;'}) Does such a function exist, or is the standard Python idiom to use what I wrote before?

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  • Web application design with distributed servers

    - by Bonn
    I want to build a web application/server with this structure: main-server sub-server transaction-server (create, update, delete) view-server (view, search) authentication-server documents-server reporting-server library-server e-learning-server The main-server acts as host server for sub-server. I can add many sub-servers and connect it to main-server (via plug-play interface maybe), then it can begin querying data from another sub-servers (which has been connected to the main-server). The sub-servers can be anywhere as long as connected to internet. The main-server can manage all sub-servers which are connected to it (query data, setting permission between sub-servers, etc). The purpose is simple, the web application will be huge as the company grows, so I want to distribute it into small connected plug-able servers. My question is, does the structure above already have a standardized method? or are there any different views? what are the technologies needed? I need a lot of researches before the execution plan begin. thanks a lot.

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  • Why are my USB 2.0 devices hanging Windows XP?

    - by BenAlabaster
    Background on the machine I'm having a problem with: The machine was inherited and appears to be circa 2003 (there's a date stamp on the power supply which leads me to this conclusion). I've got it set up as a Skype terminal for my 2 year old to keep in touch with her grandparents and other members of the family - which everyone loves. It has a generic ATX motherboard with no identifying markings other than one stamp that says "Rev.B". CPU-Z identifies the motherboard model as VT8601 but doesn't provide me with any manufacturer name. On board it has 1 x 10/100 LAN, 2 x USB 1.0, VGA, PS/2 for KB and mouse, parallel port, 2 x serial ports, 2 x IDE, 1 x floppy, 2 x SDRAM slots, 1 x CPU housing that is seating a 1.3GHz Intel Celeron CPU, 3 x PCI, 1 x AGP - although you can only use 2 of the PCI slots if you use the AGP slot due to the physical layout of the board. It's got 768Mb PC133 SDRAM - 1 x 512Mb & 1 x 256Mb installed as well as a D-LINK WDA-2320 54G Wi-Fi network card and a generic USB 2.0 expansion board containing 3 x external + 1 x internal USB connectors - it has a NEC uPD720102 chipset. It has a DVD+/-RW running as master on IDE1 and a 1.44Mb 3.5" floppy drive connected to the floppy connector. It has an 80Gb Western Digital hard drive running as master on IDE0. All this is sitting in a slimline case. I don't know the wattage of the PSU, but can post this later if this proves to be helpful. The motherboard is running a version of Award BIOS for which I don't have the version number to hand but can again post this later if it would be helpful. The hard disk is freshly formatted and built with Windows XP Professional/Service Pack 3 and is up to date with all current patches. In addition to Windows XP, the only other software it's running is Skype 4.1 (4.2 hangs the whole machine as soon as it starts up, requiring a hard boot to recover). It's got a Daytek MV150 15" touch screen hooked up to the on board VGA and COM1 sockets with the most current drivers from the Daytek website and the most current version of ELO-Touchsystems drivers for the touch component. The webcam is a Logitech Webcam C200 with the latest drivers from the Logitech website. The problem: If I hook any devices to the USB 2.0 sockets, it hangs the whole machine and I have to hard boot it to get it back up. If I have any devices attached to the USB 2.0 sockets when I boot up, it hangs before Windows gets to the login prompt and I have to hard boot it to recover. Workarounds found: I can plug the same devices into the on board USB 1.0 sockets and everything works fine, albeit at reduced performance. I've tried 3 different kinds of USB thumb drives, 3 different makes/models of webcams and my iPhone all with the same effect. They're recognized and don't hang the machine when I hook them to the USB 1.0 but if I hook them to the USB 2.0 ports, the machine hangs within a couple of seconds of recognizing the devices were connected. Attempted solutions: I've seen suggestions that this could be a power problem - that the PSU just doesn't have the wattage to drive these ports. While I'm doubtful this is the problem [after all the motherboard has the same standard connector regardless of the PSU wattage], I tried disabling all the on board devices that I'm not using - on board LAN, the second COM port, the AGP connector etc. through the BIOS in what I'm sure is a futile attempt to reduce the power consumption... I also modified the ACPI and power management settings. It didn't have any noticeable affect, although it didn't do any harm either. Could the wattage of the PSU really cause this problem? If it can, is there anything I need to be aware of when replacing it or do I just need to make sure it's got a higher wattage than the current one? My interpretation was that the wattage only affected the number of drives you could hook up to the power connectors, is that right? I've installed the USB card in another machine and it works without issue, so it's not a problem with the USB card itself, and Windows says the card is installed and working correctly... right up until I connect a device to it. The only thing I haven't done which I only just thought of while writing this essay is trying the USB 2.0 card in a different PCI slot, or re-ordering the wi-fi and USB cards in the slots... although I'm not sure if this will make any difference - does anyone have any experience that would suggest this might work? Other thoughts/questions: Perhaps this is an incompatibility between the USB 2.0 card and the BIOS, would re-flashing the BIOS with a newer version help? Do I need to be able to identify the manufacturer of the motherboard in order to be able to find a BIOS edition specific for this motherboard or will any version of Award BIOS function in its place? Question: Does anyone have any ideas that could help me get my USB 2.0 devices hooked up to this machine? Edit: Updated the USB 2.0 info with reference to actual card - http://www.xpcgear.com/lpnec4u.html

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  • Configuring Nagios BGP plugin on Ubuntu

    - by user141610
    I am trying to configure nagios check_bgp_neighbors plug-in on Ubuntu and followed README file of check_bgp_neighbors plug-in. I have made following changes: define command{ command_name check_bgp_all command_line $USER1$/check_bgp_neighbors -H $HOSTADDRESS$ -C $USER3$ -n $ARG1$ -n $ARG2$ } to define command{ command_name check_bgp_all command_line /usr/local/nagios/libexec/check_bgp_neighbors.sh -H xx.xx.xx.49 -C xx.xx.xx.50 And define service{ use server-service hostgroup_name svc-bgp1 service_description BGP Check 1 check_command check_bgp_all!10.0.0.1!172.16.0.2 } to define service{ use generic-service hostgroup_name svc-bgp1 service_description BGP Check 1 check_command check_bgp_all!xx.xx.xx.50 } xx.xx.xx.49 is the IP of the host router and xx.xx.xx.50 is the IP of eBGP neighbour. After that it shows critical status. I know my command is not correct but cannot detect the problem. I learned that in this plug-in user-name and password of the host router are required but don't know how and where to provide it. Nagios log does not show any error message. Status information: Failed: status:0 prefixes:0 sent:0 received:0

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  • tmux: unbind C-[ as a prefix

    - by StanAngeloff
    I have a fairly straight forward .tmux.conf file which does nothing more but to define a couple of options, such as history-limit. I have not added any custom key bindings yet. I find it extremely annoying that I cannot unbind C-[ as a prefix in tmux. Here is what I mean: $ uname -a Linux stan-inspiron 3.2.0-24-generic #39-Ubuntu SMP Mon May 21 16:52:17 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux $ tmux [0] 0:~* "stan-inspiron" 10:05 12-Jun-12 % vim Whilst inside vim, when I go to insert mode and then use C-[0 to escape insert mode and move to the first character on the line, tmux grabs the key first and complains: Window not found: :0 ** I tried all sorts of things in my .tmux.conf, but nothing works. I thought it might be a terminal or shell issue, but confirmed same behaviour on a configless machine using Bash and [Gnome] Terminal. So the question really is, how do I unbind the C-[ key from tmux? ** I have base-index 1 set.

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  • Solaris x86: Non working keys on keyboard (<, >, #, |)

    - by Thomas
    Hello everyone, I have a new installation of Solaris 10 10/09 on x86 hardware. The attached keyboard has a normal German layout. The system is configured accordingly by 'kbd -s'. The generic keys (letter, number, umlaut) work fine. Unfortunately some keys like <, , | or # do not. They produce no output on the text console at all. I tried PS/2 and USB keyboards. I cannot test it under X11 as it is currently not working. Thanks.

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  • Jumbo Frames on DIR-655

    - by Spookyone
    Hello, I am trying to set up jumbo frames on my gigabit home LAN but no luck so far. My setup is: D-Link DIR-655 router, HW Revision A3, Firmware 1.21 EU Synology DS107+, Firmware 3.0-1337 Laptop w/ Win7 x64, external PCIx NIC managed by "Generic Marvel Yukon 88E8053 based Ethernet Controller" The router is supposed to support jumbo frames but doesn't feature any relevant setting. I set the Jumbo Packet value to 9000 on both the NIC and the Synobox but it doesn't work, ping -f -l 8972 says "Packet needs to be fragmented but DF set". Is there any other setting I overlooked, the DIR-655 doesn't actually support jumbo frames, or what else could be the problem?

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  • Calculating spam probability

    - by Hobhouse
    I am building a website in python/django and want to predict wether a user submission is valid or wether it is spam. Users have an accept rate on their submissions, like this website has. Users can moderate other users' submissions; and these moderations are later metamoderated by an admin. Given this: user A with an submission accept rate of 60% submits something. user B moderates A's post as a valid submission. However, his moderations are often wrong, and his moderations' accept rate is a mere 30%. user C moderates A's post as spam. User C is usually right. His moderations' accept rate is 80%. How can I predict the chance of A's post being spam?

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  • Stack recommendations for small/medium-sized web application in Python

    - by reto
    I'm looking for some recommendations for a python web application. We have some memory restrictions and we try to keep it small and lean. We thought about using WSGI (and a python webserver) and build the rest ourself. We already have a template engine we'd like to use, but we are open for some suggestions regarding the whole request handling (the controller). The application has to run in a single process and the requests have to be processed with multiple threads. We've looked at django, but we are a not sure if it fits into our memory budget. Your feedback is very welcome! Cheers, Reto

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  • Spring @Autowired messageSource working in Controller but not in other classes?

    - by Jayaprakash
    New updates: As I could not succeed in configuring messageSource through annotations, I attempted to configure messageSource injection through servlet-context.xml. I still have messageSource as null. Please let me know if you need any more specific info, and I will provide. Thanks for your help in advance. servlet-context.xml <beans:bean id="message" class="com.mycompany.myapp.domain.common.message.Message"> <beans:property name="messageSource" ref="messageSource" /> </beans:bean> Spring gives the below information message about spring initialization. INFO : org.springframework.context.annotation.ClassPathBeanDefinitionScanner - JSR-330 'javax.inject.Named' annotation found and supported for component scanning INFO : org.springframework.beans.factory.support.DefaultListableBeanFactory - Overriding bean definition for bean 'message': replacing [Generic bean: class [com.mycompany.myapp.domain.common.message.Message]; scope=singleton; abstract=false; lazyInit=false; autowireMode=0; dependencyCheck=0; autowireCandidate=true; primary=false; factoryBeanName=null; factoryMethodName=null; initMethodName=null; destroyMethodName=null; defined in file [C:\springsource\tc-server-developer-2.1.0.RELEASE\spring-insight-instance\wtpwebapps\myapp\WEB-INF\classes\com\mycompany\myapp\domain\common\message\Message.class]] with [Generic bean: class [com.mycompany.myapp.domain.common.message.Message]; scope=; abstract=false; lazyInit=false; autowireMode=0; dependencyCheck=0; autowireCandidate=true; primary=false; factoryBeanName=null; factoryMethodName=null; initMethodName=null; destroyMethodName=null; defined in ServletContext resource [/WEB-INF/spring/appServlet/servlet-context.xml]] INFO : org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor - JSR-330 'javax.inject.Inject' annotation found and supported for autowiring INFO : org.springframework.beans.factory.support.DefaultListableBeanFactory - Pre-instantiating singletons in org.springframework.beans.factory.support.DefaultListableBeanFactory@1c7caac5: defining beans [org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping#0,org.springframework.format.support.FormattingConversionServiceFactoryBean#0,org.springframework.validation.beanvalidation.LocalValidatorFactoryBean#0,org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter#0,org.springframework.web.servlet.handler.MappedInterceptor#0,org.springframework.web.servlet.mvc.HttpRequestHandlerAdapter,org.springframework.web.servlet.resource.ResourceHttpRequestHandler#0,org.springframework.web.servlet.handler.SimpleUrlHandlerMapping#0,xxxDao,message,xxxService,jsonDateSerializer,xxxController,homeController,org.springframework.context.annotation.internalConfigurationAnnotationProcessor,org.springframework.context.annotation.internalAutowiredAnnotationProcessor,org.springframework.context.annotation.internalRequiredAnnotationProcessor,org.springframework.context.annotation.internalCommonAnnotationProcessor,tilesViewResolver,tilesConfigurer,messageSource,org.springframework.web.servlet.handler.MappedInterceptor#1,localeResolver,org.springframework.web.servlet.view.ContentNegotiatingViewResolver#0,validator,resourceBundleLocator,messageInterpolator]; parent: org.springframework.beans.factory.support.DefaultListableBeanFactory@4f47af3 I have the below definition for message source in 3 classes. In debug mode, I can see that in class xxxController, messageSource is initialized to org.springframework.context.support.ReloadableResourceBundleMessageSource. I have annotated Message class with @Component and xxxHibernateDaoImpl with @Repository. I also included context namespace definition in servlet-context.xml. But in Message class and xxxHibernateDaoImpl class, the messageSource is still null. Why is Spring not initializing messageSource in the two other classes though in xxxController classes, it initializes correctly? @Controller public class xxxController{ @Autowired private ReloadableResourceBundleMessageSource messageSource; } @Component public class Message{ @Autowired private ReloadableResourceBundleMessageSource messageSource; } @Repository("xxxDao") public class xxxHibernateDaoImpl{ @Autowired private ReloadableResourceBundleMessageSource messageSource; } <beans:beans xmlns:context="http://www.springframework.org/schema/context" xsi:schemaLocation=" http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd"> <beans:bean id="messageSource" class="org.springframework.context.support.ReloadableResourceBundleMessageSource"> <beans:property name="basename" value="/resources/messages/messages" /> </beans:bean> <context:component-scan base-package="com.mycompany.myapp"/> </beans>

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  • Installing qt headers and libraries

    - by ant2009
    Hello, Ubuntu 9.10 2.6.31-20-generic I am trying to install some software. When I do the ./configure. I get the following error: checking for Qt... configure: error: Qt (>= Qt 3.0.2) (headers and libraries) not found. Please check your installation! So I install the following package thinking this would solve the problem. sudo apt-get install libqt4-dev I was thinking that the libqt4-dev would install the headers and libraries. However, I am still getting the same problem. Any ideas? Many thanks,

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  • Creating a new project from a project skeleton using git

    - by asciitaxi
    In order to get a new django project up and running faster, I'd like to maintain a separate "project skeleton" on which I base all my new projects. It would be great if, as I improved the skeleton, I could bring those improvements into my active projects. How can I accomplish this with git? So, maybe in my remote git repository machine I would have 1 repo for each project and one for the skeleton? proj-A-repo proj-B-repo skeleton-repo If I want to create a new proj-C locally based on the skeleton, then push my local changes up to the remote server in a new repo called proj-C-repo, how might I do this? I've read through quite a bit of git documentation, but I'm confused about how to go about this. Do I need to clone the skeleton, or create an empty repo and then track a remote branch, or something else?

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  • How to monitor the size of files in Windows folder?

    - by zladuric
    What are some of good ways to automatically monitor the size of files in a directory and send warning email if they get close to a certain limit on a Windows server? I have a Progress DB installation to keep in check, and last week we hit some problems. Apparently, the size of extents has hit 2GB - and Progress won't work past that - we needed to open a new extent. I'm coming from a Linux environment, so I don't know what are the usual to monitor this in a Windows environment (or monitoring tools whatsoever). I prefer some generic solution, as I have a mixed environment (Windows 2000, Windows Server 2003, Windows Server 2008 R2). Thanks in advance for all usable alternative answers.

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  • Global hotkeys: songbird on KDE

    - by alpha1
    I'm running songbird on opensuse 11.2 KDE 4.3.1 on my EEE pc. On windows, there is a hotkey thing inside Songbird, so i set META F9,10,11,12 as media keys and it work just fine. On linux, there is not hotkey thing in songbird, and I would like to set those same hotkeys. I've played around with the Amarok Hotkeys, which are now setup that way, and looked in all the KDE shortcuts, but cannot find a way to add a new program and new hot keys. I know its possible, I did it before once, but the KDE shortcut programs have changed and I no longer see the stuff i used to do it before. I'd like to do the same to banshee at some point, but Songbird is the important program. Any Ideas? Any way to set those keys to generic media buttons?

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  • What is the fastest CPU my laptop can support?

    - by Dave
    I have a Dell Latitude D830 laptop and would like to speed up compile times on it. I have confirmed that it is, indeed, the processor time that is the bottleneck. How can I tell what processors are compatible with the motherboard to pick the best available? I run dual boot Ubuntu Maverick and Windows 7. lshw tells me that my motherboard is OHN338 from Dell, Inc. If anyone has a generic solution, i.e. "For motherboard X, here is how you find out what processors are supported," that would be make this question much more useful to future visitors. But if you also know of a way to find out specific to my model, that would be great as well.

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  • The type or namespace cannot be found (are you missing a using directive or an assembly reference?)

    - by Kumu
    I get the following error when I try to compile my C# program: The type or namespace name 'Login' could not be found (are you missing a using directive or an assembly reference?) using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Text; using System.Windows.Forms; namespace FootballLeague { public partial class MainMenu : Form { FootballLeagueDatabase footballLeagueDatabase; Game game; Team team; Login login; //Error here public MainMenu() { InitializeComponent(); changePanel(1); } public MainMenu(FootballLeagueDatabase footballLeagueDatabaseIn) { InitializeComponent(); footballLeagueDatabase = footballLeagueDatabaseIn; } private void Form_Loaded(object sender, EventArgs e) { } private void gameButton_Click(object sender, EventArgs e) { int option = 0; changePanel(option); } private void scoreboardButton_Click(object sender, EventArgs e) { int option = 1; changePanel(option); } private void changePanel(int optionIn) { gamePanel.Hide(); scoreboardPanel.Hide(); string title = "Football League System"; switch (optionIn) { case 0: gamePanel.Show(); this.Text = title + " - Game Menu"; break; case 1: scoreboardPanel.Show(); this.Text = title + " - Display Menu"; break; } } private void logoutButton_Click(object sender, EventArgs e) { login = new Login(); login.Show(); this.Hide(); } Login.cs class: using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Text; using System.Windows.Forms; namespace FootballLeagueSystem { public partial class Login : Form { MainMenu menu; public Login() { InitializeComponent(); } private void administratorLoginButton_Click(object sender, EventArgs e) { string username1 = "08247739"; string password1 = "08247739"; if ((userNameTxt.Text.Length) == 0) MessageBox.Show("Please enter your username!"); else if ((passwordTxt.Text.Length) == 0) MessageBox.Show("Please enter your password!"); else if (userNameTxt.Text.Equals("") || passwordTxt.Text.Equals("")) MessageBox.Show("Invalid Username or Password!"); else { if (this.userNameTxt.Text == username1 && this.passwordTxt.Text == password1) MessageBox.Show("Welcome Administrator!", "Administrator Login"); menu = new MainMenu(); menu.Show(); this.Hide(); } } private void managerLoginButton_Click(object sender, EventArgs e) { { string username2 = "1111"; string password2 = "1111"; if ((userNameTxt.Text.Length) == 0) MessageBox.Show("Please enter your username!"); else if ((passwordTxt.Text.Length) == 0) MessageBox.Show("Please enter your password!"); else if (userNameTxt.Text.Equals("") && passwordTxt.Text.Equals("")) MessageBox.Show("Invalid Username or Password!"); else { if (this.userNameTxt.Text == username2 && this.passwordTxt.Text == password2) MessageBox.Show("Welcome Manager!", "Manager Login"); menu = new MainMenu(); menu.Show(); this.Hide(); } } } private void cancelButton_Click(object sender, EventArgs e) { this.Close(); } } } Where is the error? What am I doing wrong?

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  • How to charge an iPhone on a Windows PC without Installaing iTunes

    - by Martin Hollingsworth
    I want to be able to charge my iPhone on my work computer, which is running Windows Server 2008 SP1 64-Bit. When I plug the iPhone in with the USB cable, it will not charge. Windows attempts to locate a driver for the device but only comes up with a generic Camera device and even if I allow that to be installed, the iPhone still does not charge. I have checked the computer's BIOS settings and did not find anything relating to power on the USB devices. I also tried this on ports at the back of the computer in addition to those on the front. The PC is a Dell Optiplex 780. As far as I can tell USB devices do not charge unless Windows has installed an appropriate driver. Since it is a work computer I do not want to install iTunes which does include a driver. I have a workaround that I will post as an answer for reference.

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  • How to draw complex shape from code behind for custom control in resource dictionary

    - by HopelessCoder
    Hi I am new to wpf and am having a problem which may or may not be trivial. I have defined a custom control as follows in the resource dictionary: <ResourceDictionary x:Class="SyringeSlider.Themes.Generic" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:local="clr-namespace:SyringeSlider"> <Style TargetType="{x:Type local:CustomControl1}"> <Setter Property="Template"> <Setter.Value> <ControlTemplate TargetType="{x:Type local:CustomControl1}"> <Border Background="{TemplateBinding Background}" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}"> <Canvas Height="{TemplateBinding Height}" Width="{TemplateBinding Width}" Name="syringeCanvas"> </Canvas> </Border> </ControlTemplate> </Setter.Value> </Setter> </Style> </ResourceDictionary> Unfortunately I cannot go beyond this because I would like to draw a geometry onto the canvas consisting of a set of multiple line geometries whose dimensions are calculated as a function of the space available in the canvas. I believe that I need a code behind method to do this, but have not been able to determine how to link the xaml definition to a code behind method. Note that I have set up a class x:Class="SyringeSlider.Themes.Generic" for specifically this purpose, but can't figure out which Canvas property to link the drawing method to. My drawing method looks like this private void CalculateSyringe() { int adjHeight = (int) Height - 1; int adjWidth = (int) Width - 1; // Calculate some very useful values based on the chart above. int borderOffset = (int)Math.Floor(m_borderWidth / 2.0f); int flangeLength = (int)(adjHeight * .05f); int barrelLeftCol = (int)(adjWidth * .10f); int barrelLength = (int)(adjHeight * .80); int barrelRightCol = adjWidth - barrelLeftCol; int coneLength = (int)(adjHeight * .10); int tipLeftCol = (int)(adjWidth * .45); int tipRightCol = adjWidth - tipLeftCol; int tipBotCol = adjWidth - borderOffset; Path mySyringePath = new Path(); PathGeometry mySyringeGeometry = new PathGeometry(); PathFigure mySyringeFigure = new PathFigure(); mySyringeFigure.StartPoint = new Point(0, 0); Point pointA = new Point(0, flangeLength); mySyringeFigure.Segments.Add(new LineSegment(pointA, true)); Point pointB = new Point(); pointB.Y = pointA.Y + barrelLength; pointB.X = 0; mySyringeFigure.Segments.Add(new LineSegment(pointB, true)); // You get the idea....Add more points in this way mySyringeGeometry.Figures.Add(mySyringeFigure); mySyringePath.Data = mySyringeGeometry; } SO my question is: 1) Does what I am trying to do make any sense? 2) Can a use a canvas for this purpose? If not, what are my other options? Thanks!

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  • Xen 4.1 host (dom0) with blktap disks ("tap:aio:") not connecting

    - by Manwe
    Problem using blktap with xen-4.1 running Ubuntu Precise stock kernel with dom0 xen-4.1. I get: [ 5.580106] XENBUS: Waiting for devices to initialise: 295s...290s. ... [ 300.580288] XENBUS: Timeout connecting to device: device/vbd/51713 (local state 3, remote state 1) And some syslog lines: May 17 13:07:30 localhost logger: /etc/xen/scripts/blktap: add XENBUS_PATH=backend/tap/10/51713 May 17 13:07:31 localhost logger: /etc/xen/scripts/blktap: Writing backend/tap/10/51713/hotplug-status connected to xenstore. with tap:aio: disk lines. file:/ works. disk = [ 'tap:aio:/data/root.img,xvda1,w', ] Problem exists with lucid and precises domU kernels and both guests work in Ubuntu hardy dom0 Host 64bit 2.6.24-28-xen xen-3.3 3.2.0-24-generic #37-Ubuntu SMP Wed Apr 25 08:43:22 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux Distributor ID: Ubuntu Description: Ubuntu 12.04 LTS Release: 12.04 Codename: precise

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  • ubuntu Grub boot hangs on external usb drive

    - by schoetbi
    Hi, i just gave xubuntu another try and installed it ordinarily on a external usb harddisk. I have another harddisk installed inside the laptop that has Windows Xp on it. Now the problem: When I boot from the external drive the boot menu of Grub 2 shows up and i see all installed bootable partitions including windows. Now I select Xubuntu and wait. When the Xubuntu Logo shows up the boot process hangs. Now the funny thing. When the logo shows up I can unplug the usb drive and reconnect it real fast. Then the boot process will continue!!! Since I am a Linux newbie I would appreciate every hint that can solve this so that I can enjoy a smooth Linux boot:-) EDIT Grub version is: tobias@ubuntu:~$ grub-install -v grub-install (GRUB) 1.98+20100804-5ubuntu3 Kernel is: tobias@ubuntu:~$ uname -r 2.6.35-23-generic Xubuntu is 9.10 Thanks

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  • Podcast aggregation - please recommend for Windows 7

    - by bazza-formez
    Hi, I need a good podcast aggregator. I was using Juice 2.2, but that will not work on my new pc which is running Windows 7 (64 bit). Could anyone recommend one please ? I need the following functionality : 1- Subscribe to podcasts (mp3's from radio shows) using rss 2- Have OPML support so I can load up my old subscriptions easily 3- That runs quietly in the backgrond and looks after itself 4- That deletes old episodes automatically after a set time 5- Isn't just designed for an IPOD (I use a simple generic mp3 player to listen). Any ideas? Thanks! Bazza

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  • PUT parameters not working in python / google app engine

    - by magegu
    hi, i'm working on a simple RESTful webservice with python with the webapp framework on the google app engine. Basically i'm sending all request via AJAX/jquery - for POST it works like a charm, but when I'm sending data with PUT, the parameters are empty / not processed. this is my PUT: $.ajax({ type: "PUT", url: "/boxes", data: { name: this.name, archived: this.archived }, success: function(msg){ } }); firebug saids i'm putting: Parameter application/x-www-form-urlencoded archived false name 123112323asdasd but using this python code: from google.appengine.ext import webapp from google.appengine.ext.webapp import util, template from google.appengine.ext import db from google.appengine.api.datastore_types import * from django.utils import simplejson as json import cgi import datetime class BoxHandler(webapp.RequestHandler): def post(self): #working print "test" self.response.out.write(self.request.get("name")) def put(self): print "test" #not working self.response.out.write(self.request.get("name")) will just return test Status: 200 OK Content-Type: text/html; charset=utf-8 Cache-Control: no-cache Expires: Fri, 01 Jan 1990 00:00:00 GMT Content-Length: 0 so .. hm, is there anything i'm missing here? cheers, Martin

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