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• How should a Gnome applet store its configuration data?

  - by George Edison

  I have a Gnome applet written in Python. In order to save configuration data/settings, it creates a file ~/.appname. However, this prevents multiple instances of the applet from being added to the panel because each cannot have its own settings. How can I store the settings in a way that allows each instance to have its own unique settings? Update: I specifically want to know how to store settings per instance.

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• Can I use reflection to find the bin/[Configuration] folder in ASP.NET instead of the asp temporary

  - by vfilby

  I have an ASP.NET website and I want to find the /bin/[Configuration] folder to use an external tool. When I use reflection to get calling assemblies location it returns something similar to: C:\Windows\Microsoft.NET\Framework\...\Temporary ASP.NET Files\a1388a5e\...\my.dll Since each dll has its own directory under the temp ASP.NET Files this fails for me. How can I get the location of the binary, not asp.net's temporary cache?

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• How to publish an ASP.NET MVC application to a free host

  - by Lirik

  Hi, I'm using a free web host (0000free) which supports ASP.NET MVC, but it uses Mono. This is the first time I deploy an MVC application, so I'm a little confused as to where I need to deploy it. I have Visual Studio 2010 and I used its Publish Feature (i.e. right click on the project name and click publish) and I tried several things: Publish method: FTP to the root folder. Publish method: FTP to the publich_html folder. Publish method: File System to the root folder. Publish method: File System to the publich_html folder. Publish method: File System to a local directory on my computer and then FTP to root and also tried the public_html folder. I went into the cPanel (control panel) to try and see if ASP.NET has to be added/enabled for my web site, but I didn't see anything there. I can't browse to Index.aspx nor can I redirect to it from index.html (as suggested from other posts on the host forum), right now I have a link from index.html to Index.aspx but it's not working either (see http://www.mydevarmy.com) I've also tried renaming Index.aspx to Default.aspx, but that doesn't work either. The search utility of the forum of the host is somewhat weak, so I use google to search their forum: http://www.google.com/search?q=publish+asp.net+site%3A0000free.com%2Fforum%2F&ie=utf-8&oe=utf-8&aq=t&rls=org.mozilla:en-US:official&client=firefox-a I've been reading Pro ASP.NET MVC Framework and they have a chapter about publishing, but it doesn't provide any specific information with respect to the location of publishing, this is all they say (and it's not very helpful in my case): Where Should I Put My Application? You can deploy your application to any folder on the server. When IIS first installs, it automatically creates a folder for a web site called Default Web Site at c:\Inetpub\wwwroot\, but you shouldn’t feel any obligation to put your application files there. It’s very common to host applications on a different physical drive from the operating system (e.g., in e:\websites\ example.com). It’s entirely up to you, and may be influenced by concerns such as how you plan to back up the server. Here is the exception I get when I try to view my Index.aspx page: Unrecognized attribute 'targetFramework'. (/home/devarmy/public_html/Web.config line 1) Description: HTTP 500. Error processing request. Stack Trace: System.Configuration.ConfigurationErrorsException: Unrecognized attribute 'targetFramework'. (/home/devarmy/public_html/Web.config line 1) at System.Configuration.ConfigurationElement.DeserializeElement (System.Xml.XmlReader reader, Boolean serializeCollectionKey) [0x00000] in <filename unknown>:0 at System.Configuration.ConfigurationSection.DoDeserializeSection (System.Xml.XmlReader reader) [0x00000] in <filename unknown>:0 at System.Configuration.ConfigurationSection.DeserializeSection (System.Xml.XmlReader reader) [0x00000] in <filename unknown>:0 at System.Configuration.Configuration.GetSectionInstance (System.Configuration.SectionInfo config, Boolean createDefaultInstance) [0x00000] in <filename unknown>:0 at System.Configuration.ConfigurationSectionCollection.get_Item (System.String name) [0x00000] in <filename unknown>:0 at System.Configuration.Configuration.GetSection (System.String path) [0x00000] in <filename unknown>:0 at System.Web.Configuration.WebConfigurationManager.GetSection (System.String sectionName, System.String path, System.Web.HttpContext context) [0x00000] in <filename unknown>:0 at System.Web.Configuration.WebConfigurationManager.GetSection (System.String sectionName, System.String path) [0x00000] in <filename unknown>:0 at System.Web.Configuration.WebConfigurationManager.GetWebApplicationSection (System.String sectionName) [0x00000] in <filename unknown>:0 at System.Web.Compilation.BuildManager.get_CompilationConfig () [0x00000] in <filename unknown>:0 at System.Web.Compilation.BuildManager.Build (System.Web.VirtualPath vp) [0x00000] in <filename unknown>:0 at System.Web.Compilation.BuildManager.GetCompiledType (System.Web.VirtualPath virtualPath) [0x00000] in <filename unknown>:0 at System.Web.Compilation.BuildManager.GetCompiledType (System.String virtualPath) [0x00000] in <filename unknown>:0 at System.Web.HttpApplicationFactory.InitType (System.Web.HttpContext context) [0x00000] in <filename unknown>:0

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• Custom ViewModel with MVC 2 Strongly Typed HTML Helpers return null object on Create ?

  - by Barbaros Alp

  Hi, I am having a trouble while trying to create an entity with a custom view modeled create form. Below is my custom view model for Category Creation form. public class CategoryFormViewModel { public CategoryFormViewModel(Category category, string actionTitle) { Category = category; ActionTitle = actionTitle; } public Category Category { get; private set; } public string ActionTitle { get; private set; } } and this is my user control where the UI is <%@ Control Language="C#" Inherits="System.Web.Mvc.ViewUserControl<CategoryFormViewModel>" %> <h2> <span><%= Html.Encode(Model.ActionTitle) %></span> </h2> <%=Html.ValidationSummary() %> <% using (Html.BeginForm()) {%> <p> <span class="bold block">Baslik:</span> <%=Html.TextBoxFor(model => Model.Category.Title, new { @class = "width80 txt-base" })%> </p> <p> <span class="bold block">Sira Numarasi:</span> <%=Html.TextBoxFor(model => Model.Category.OrderNo, new { @class = "width10 txt-base" })%> </p> <p> <input type="submit" class="btn-admin cursorPointer" value="Save" /> </p> <% } %> When i click on save button, it doesnt bind the category for me because of i am using custom view model and strongly typed html helpers like that <%=Html.TextBoxFor(model => Model.Category.OrderNo) %> How can i fix this ? Thanks in advance

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• drupal - using variable_set, hook block and hook menu to save config values then print out in custom

  - by bert

  I am trying to 1) implement the hook menu and variable_set in the block hook and to solicit and store configuration values from user, 2) then use retrieve configuration values and 3) pass them out into a template using theme hook when page is shown. However I need a bit of a push on step two and three! // ===================== file: my_module.php function my_module_block($op = 'list', $delta = 0, $edit = array()) { switch($op) { case 'list': $blocks[0] = array( 'info' => t('Find Something'), // required value - this shows up in your list of blocks 'region' => 'left', // default region on the page 'weight' => 0, // position the block vertically within its column. 'visibility' => 1, // permit the block to be displayed for a given user. 'status' => TRUE, // enabled ); return $blocks; break; // case configure case 'configure': // not used ? // case save (save configuration values) case 'save': variable_set('my_module_text_bottom', $edit['my_module_text_bottom']); variable_set('my_module_text_top', $edit['my_module_text_top']); break; } } function my_module_menu(){ $items = array(); // add menu items $items['my_module'] = array( // add a menu item here... ); // administration setting - callback my_module_admin $items['admin/settings/my_module'] = array( 'title' => 'Lookup on Something', 'description' => 'Description of my module settings page', 'page callback' => 'drupal_get_form', 'page arguments' => array('my_module_admin'), 'access arguments' => array('access administration pages'), 'type' => MENU_NORMAL_ITEM, ); return $items; } // setup administrative default values (see: site configiration) function my_module_admin() { $form = array(); $form['my_module_text_top'] = array( '#type' => 'textarea', '#title' => t('Text of top of page'), '#default_value' => variable_get('my_module_text_top', 'my_module_text_top: This is configurable text found in the module configuration.'), '#size' => 1024, '#maxlength' => 1024, '#description' => t("text above the Find a Retailer block."), '#required' => TRUE, ); $form['my_module_text_bottom'] = array( '#type' => 'textarea', '#title' => t('Text at bottom of page'), '#default_value' => variable_get('my_module_text_bottom', 'my_module_text_bottom: This is configurable text found in the module configuration.'), '#size' => 1024, '#maxlength' => 1024, '#description' => t("text below the Find a Retailer block."), '#required' => TRUE, ); return system_settings_form($form); } // registering a theme function my_module_theme(){ return array( 'my_module_show' => array( 'arguments' => array('content' => "hello"), 'template' => 'my_module_show' ), ); } // implementing a theme function theme_my_module_show($content){ $output = '<ul>$content</ul>'; return $output; } function my_module(){ $output = ''; $variables = ""; $output .= theme('my_module_show', $variables); return $output; } // ===================== file: my_module_show.tpl.php print $text1; print $text2;

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• Django custom managers - how do I return only objects created by the logged-in user?

  - by Tom Tom

  I want to overwrite the custom objects model manager to only return objects a specific user created. Admin users should still return all objects using the objects model manager. Now I have found an approach that could work. They propose to create your own middleware looking like this: #### myproject/middleware/threadlocals.py try: from threading import local except ImportError: # Python 2.3 compatibility from django.utils._threading_local import local _thread_locals = local() def get_current_user(): return getattr(_thread_locals, 'user', None) class ThreadLocals(object): """Middleware that gets various objects from the request object and saves them in thread local storage.""" def process_request(self, request): _thread_locals.user = getattr(request, 'user', None) #### end And in the Custom manager you could call the get_current_user() method to return only objects a specific user created. class UserContactManager(models.Manager): def get_query_set(self): return super(UserContactManager, self).get_query_set().filter(creator=get_current_user()) Is this a good approach to this use-case? Will this work? Or is this like "using a sledgehammer to crack a nut" ? ;-) Just using: Contact.objects.filter(created_by= user) in each view doesn`t look very neat to me. EDIT Do not use this middleware approach !!! use the approach stated by Jack M. below After a while of testing this approach behaved pretty strange and with this approach you mix up a global-state with a current request. Use the approach presented below. It is really easy and no need to hack around with the middleware. create a custom manager in your model with a function that expects the current user or any other user as an input. #in your models.py class HourRecordManager(models.Manager): def for_user(self, user): return self.get_query_set().filter(created_by=user) class HourRecord(models.Model): #Managers objects = HourRecordManager() #in vour view you can call the manager like this and get returned only the objects from the currently logged-in user. hr_set = HourRecord.objects.for_user(request.user)

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• How to handle custom Java exception in Flex app.

  - by mico

  Hello, we are using BlazeDS as a proxy between Flex and Java. The approach is the same as in (http://www.flexpasta.com/index.php/2008/05/16/exception-handling-with-blazeds-and-flex/) Java exception declaration: public class FlexException extends RuntimeException { private String name = 'John'; public FlexException(String message) { super(message); } public String getName() { return name; } } Then, we are throwing it: public void testMethod(String str) throws Exception { throw new FlexException("Custom exception"); } Flex part: private function faultHandler(event:FaultEvent):void { var errorMessage:ErrorMessage = event.message as ErrorMessage; trace("error++"); } and remote object is instantiated here: <mx:RemoteObject id="mySample" destination="mySample" channelSet="{cs1}" fault="faultHandler(event)" /> But in event.fault I get "Server.Processing" and event.faultString equals "There was an unhandled failure on the server. Custom exception" How can I receive the data is specified in exception props ? BlazeDS log is similar to the log that was mentioned in the comment [BlazeDS] 11:28:13.906 [DEBUG] Serializing AMF/HTTP response Version: 3 (Message #0 targetURI=/2/onStatus, responseUR|-) (Typed Object #0 ‘flex.messaging.messages.ErrorMessage’) headers = (Object #1) rootCause = null body = null correlationId = “2F1126D7-5658-BE40-E27C-7B43F3C5DCDD” faultDetail = null faultString = “Login required before authorization can proceed.” clientId = “C4F0E77C-3208-ECDD-1497-B8D070884830? timeToLive = 0.0 destination = “books” timestamp = 1.204658893906E12 extendedData = null faultCode = “Client.Authentication” messageId = “C4F0E77C-321E-6FCE-E17D-D9F1C16600A8? So the quesion is why rootClause is null? How can I get that Exception object not just a string 'Custom exception'?

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• How to access "Custom" or non-System TFS workitem fields using PowerShell?

  - by DaBozUK

  When using PowerShell to extract information from TFS, I find that I can get at the standard fields but not "Custom" fields. I'm not sure custom is the correct term, but for example if I look at the Process Editor in VS2008 and edit the Work Item type, there are fields such as listed below, with Name, Type and RefName: Title String System.Title State String System.State Rev Integer System.Rev Changed By String System.ChangedBy I can access these with Get-TfsItemHistory: Get-TfsItemHistory "$/path" -Version "D01/12/10~" -R | Select -exp WorkItems | Format-Table Title, State, Rev, ChangedBy -Auto So far so good. However, there are also some other fields in the WorkItem type, which I'm calling "Custom" or non-System fields, e.g.: Activated By String Microsoft.VSTS.Common.ActivatedBy Resolved By String Microsoft.VSTS.Common.ResolvedBy And the following command does not retrieve the data, just spaces. Get-TfsItemHistory "$/path" -Version "D01/12/10~" -R | Select -exp WorkItems | Format-Table ActivatedBy, ResolvedBy -Auto I've also tried the names in quotes, the fully qualified refname, but no luck. How do you access these "non-System" fields? Thanks Boz UPDATE: From Keith's answer I can get the fields I need: Get-TfsItemHistory "$/Hermes/Main" -Version "D01/12/10~" -Recurse ` | Select ChangeSetId, Comment -exp WorkItems ` | Select ChangeSetId, Comment, @{n='WI-Id'; e={$_.Id}}, Title -exp Fields ` | Where {$_.ReferenceName -eq 'Microsoft.VSTS.Common.ResolvedBy'} ` | Format-Table ChangesetId, Comment, WI-Id, Title, @{n='Resolved By'; e={$_.Value}} -Auto

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• Save Dialog on top of another custom dialog is behaving strangely!

  - by Raghu

  I have a save as image feature for charts in my application. The chart control is a custom user control with custom logic in them. It also has some scaling based on size, zoom etc. However, while saving them as an image I would like to give the user the option to set the size of the image (eg: 800x600 px @ 300 DPI). To do this I have created a Form with textboxes/checkboxes etc for various settings for image. One of these TextBoxes is for the file name. The file name textbox is readonly and is accompanied with a browse button which shows a SaveFileDialog when clicked. The user clicks "Save As Image" in the main form's menu. I show the ImageExportDialog using the code below: using(ImageExportDialog dlg = new ImageExportDialog()) { if(dlg.ShowDialog() == DialogResult.OK) { //get the settings selected by the user and generate the image } } In the ImageExportDialog, the user clicks on the browse button and the SaveFileDialog is shown as follows: using(SaveFileDialog dlg = new SaveFileDialog()) { if(dlg.ShowDialog() == DialogResult.OK) { txtFileName.Text = dlg.FileName; } } Now the problem is, when the user clicks on "Save" button in the SaveFileDialog, as expected the txtFileName.Text is set, but the parent custom dialog also seems to return from the ShowDialog method and the DialogResult is the same as the one for SaveFileDialog! The control then goes on to the "get the settings selected by the user and generate the image" part of the code above. Not really sure what I am doing wrong here!

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• Utility of List<T>.Sort() versus List<T>.OrderBy() for a member of a custom container class

  - by ccomet

  I've found myself running back through some old 3.5 framework legacy code, and found some points where there are a whole bunch of lists and dictionaries that must be updated in a synchronized fashion. I've determined that I can make this process infinitely easier to both utilize and understand by converging these into custom container classes of new custom classes. There are some points, however, where I came to concerns with organizing the contents of these new container classes by a specific inner property. For example, sorting by the ID number property of one class. As the container classes are primarily based around a generic List object, my first instinct was to write the inner classes with IComparable, and write the CompareTo method that compares the properties. This way, I can just call items.Sort() when I want to invoke the sorting. However, I've been thinking instead about using items = items.OrderBy(Func) instead. This way it is more flexible if I need to sort by any other property. Readability is better as well, since the property used for sorting will be listed in-line with the sort call rather than having to look up the IComparable code. The overall implementation feels cleaner as a result. I don't care for premature or micro optimization, but I like consistency. I find it best to stick with one kind of implementation for as many cases as it is appropriate, and use different implementations where it is necessary. Is it worth it to convert my code to use the LINQ OrderBy instead of using List.Sort? Is it a better practice to stick with the IComparable implementation for these custom containers? Are there any significant mechanical advantages offered by either path that I should be weighing the decision on? Or is their end-functionality equivalent to the point that it just becomes coder's preference?

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• How can I save an ASP.NET IFRAME from a custom entity's OnSave event, reliably?

  - by Forgotten Semicolon

  I have a custom ASP.NET solution deployed to the ISV directory of an MS Dynamics CRM 4.0 application. We have created a custom entity, whose data entry requires more dynamism than is possible through the form builder within CRM. To accomplish this, we have created an ASP.NET form surfaced through an IFRAME on the entity's main form. Here is how the saving functionality is currently laid out: There is an ASP.NET button control on the page that saves the entity when clicked. This button is hidden by CSS. The button click event is triggered from the CRM OnSave javascript event. The event fires and the entity is saved. Here are the issues: When the app pool is recycled, the first save (or few) may: not save be delayed (ie. the interface doesn't show an update, until the page has been refreshed after a few sec) Save and Close/New may not save For issue 1.1 and 2, what seems to be happening is that while the save event is fired for the custom ASP.NET page, the browser has moved on/refreshed the page, invalidating the request to the server. This results in the save not actually completing. Right now, this is mitigated with a kludge javascript delay loop for a few seconds after calling the button save event, inside the entity OnSave event. Is there any way to have the OnSave event wait for a callback from the IFRAME?

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• How do I bind to a custom view in Cocoa using Xcode 4?

  - by Newt

  I'm a beginner when it comes to writing Mac apps and working with Cocoa, so please forgive my ignorance. I'm looking to create a custom view, that exposes some properties, which I can then bind to an NSObjectController. Since it's a custom view, the Bindings Inspector obviously doesn't list any of the properties I've added to the view that I can then bind to using Interface Builder. After turning to the Stackoverflow/Google for help, I've stumbled across a couple of possible solutions, but neither seem to be quite right for my situation. The first suggested creating an IBPlugin, which would then mean my bindings would be available in the Bindings Inspector. I could then bind the view to the controller using IB. Apparently IBPlugins aren't supported in Xcode 4, so that one's out the window. I'm also assuming (maybe wrongly) that IBPlugins are no longer supported because there's a better way of doing such things these days? The second option was to bind the controller to the view programmatically. I'm a bit confused as to exactly how I would achieve this. Would it require subclassing NSObjectController so I can add the calls to bind to the view? Would I need to add anything to the view to support this? Some examples I've seen say you'd need to override the bind method, and others say you don't. Also, I've noticed that some example custom views call [self exposeBinding:@"bindingName"] in the initializer. From what I gather from various sources, this is something that's related to IBPlugins and isn't something I need to do if I'm not using them. Is that correct? I've found a post on Stackoverflow here which seems to discuss something very similar to my problem, but there wasn't any clear winner as to the best answer. The last comment by noa on 12th Sept seems interesting, although they mention you should be calling exposeBinding:. Is this comment along the right track? Is the call to exposeBinding really necessary? Apologies for any dumb questions. Any help greatly appreciated.

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• Entity Framework LINQ Query using Custom C# Class Method - Once yes, once no - because executing on the client or in SQL?

  - by BrooklynDev

  I have two Entity Framework 4 Linq queries I wrote that make use of a custom class method, one works and one does not: The custom method is: public static DateTime GetLastReadToDate(string fbaUsername, Discussion discussion) { return (discussion.DiscussionUserReads.Where(dur => dur.User.aspnet_User.UserName == fbaUsername).FirstOrDefault() ?? new DiscussionUserRead { ReadToDate = DateTime.Now.AddYears(-99) }).ReadToDate; } The linq query that works calls a from after a from, the equivalent of SelectMany(): from g in oc.Users.Where(u => u.aspnet_User.UserName == fbaUsername).First().Groups from d in g.Discussions select new { UnReadPostCount = d.Posts.Where(p => p.CreatedDate > DiscussionRepository.GetLastReadToDate(fbaUsername, p.Discussion)).Count() }; The query that does not work is more like a regular select: from d in oc.Discussions where d.Group.Name == "Student" select new { UnReadPostCount = d.Posts.Where(p => p.CreatedDate > DiscussionRepository.GetLastReadToDate(fbaUsername, p.Discussion)).Count(), }; The error I get is: LINQ to Entities does not recognize the method 'System.DateTime GetLastReadToDate(System.String, Discussion)' method, and this method cannot be translated into a store expression. My question is, why am I able to use my custom GetLastReadToDate() method in the first query and not the second? I suppose this has something to do with what gets executed on the db server and what gets executed on the client? These queries seem to use the GetLastReadToDate() method so similarly though, I'm wondering why would work for the first and not the second, and most importantly if there's a way to factor common query syntax like what's in the GetLastReadToDate() method into a separate location to be reused in several different places LINQ queries. Please note all these queries are sharing the same object context.

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• No event is firing when placing a custom data bound control in DataRepeater control in Windows forms

  - by Remo

  Hi, Custom events in a custom data bound control are not firing in DataRepeater control. When I debug it I found that the DataRepeater Control recreates the control using Activator.CreateInstance and Copies the Properties and Events. In my case copying events doesn't copy the custom events that I hooked in. For example public class MyClass : Control { public event EventHandler MyEvent; protected virtual void OnMyEvent() { if(this.MyEvent != null) { this.MyEvent(this,EventArgs.Empty); } } private int selectedIndex= -1; public int SelectedIndex { get { return this.selectedIndex; } set { if(this.selectedIndex != value) { this.selectedIndex = value; this.OnMyEvent(); } } } // // DataBinding stuff goes here // } public Form1() { InitialiseComponent(); ArrayList list = new ArrayList(); list.Add("one"); this.dataRepeater1.DataSource = list; // One Repeater MyClass test = new Myclass(); test.DataSource = GetDataTable(); this.dataRepeater1.ItemTemplate.Controls.Add(test); test.MyEvent +=new EventHandler(test_MyEvent); } // This Event should fire when selected index of Datatable is changed and is firing when placed directly in the form and not firing when place in DataRepeater control/////////////////////// private void test_MyEvent(object sender, EventArgss e) { // This event is not fired/////////////////////// } private DataTable GetDataTable() { ..// Create a data Table and return } Any help Appreciated. Thanks,

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• How to support comparisons for QVariant objects containing a custom type?

  - by Tyler McHenry

  According to the Qt documentation, QVariant::operator== does not work as one might expect if the variant contains a custom type: bool QVariant::operator== ( const QVariant & v ) const Compares this QVariant with v and returns true if they are equal; otherwise returns false. In the case of custom types, their equalness operators are not called. Instead the values' addresses are compared. How are you supposed to get this to behave meaningfully for your custom types? In my case, I'm storing an enumerated value in a QVariant, e.g. In a header: enum MyEnum { Foo, Bar }; Q_DECLARE_METATYPE(MyEnum); Somewhere in a function: QVariant var1 = QVariant::fromValue<MyEnum>(Foo); QVariant var2 = QVariant::fromValue<MyEnum>(Foo); assert(var1 == var2); // Fails! What do I need to do differently in order for this assertion to be true? I understand why it's not working -- each variant is storing a separate copy of the enumerated value, so they have different addresses. I want to know how I can change my approach to storing these values in variants so that either this is not an issue, or so that they do both reference the same underlying variable. It don't think it's possible for me to get around needing equality comparisons to work. The context is that I am using this enumeration as the UserData in items in a QComboBox and I want to be able to use QComboBox::findData to locate the item index corresponding to a particular enumerated value.

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• How to create custom MouseEvent.CLICK event in AS3 (pass parameters to function)?

  - by fromvega

  Hello, This question doesn't relate only to MouseEvent.CLICK event type but to all event types that already exist in AS3. I read a lot about custom events but until now I couldn't figure it out how to do what I want to do. I'm going to try to explain, I hope you understand: Here is a illustration of my situation: for(var i:Number; i < 10; i++){ var someVar = i; myClips[i].addEventListener(MouseEvent.CLICK, doSomething); } function doSomething(e:MouseEvent){ /* */ } But I want to be able to pass someVar as a parameter to doSomething. So I tried this: for(var i:Number; i < 10; i++){ var someVar = i; myClips[i].addEventListener(MouseEvent.CLICK, function(){ doSomething(someVar); }); } function doSomething(index){ trace(index); } This kind of works but not as I expect. Due to the function closures, when the MouseEvent.CLICK events are actually fired the for loop is already over and someVar is holding the last value, the number 9 in the example. So every click in each movie clip will call doSomething passing 9 as the parameter. And it's not what I want. I thought that creating a custom event should work, but then I couldn't find a way to fire a custom event when the MouseEvent.CLICK event is fired and pass the parameter to it. Now I don't know if it is the right answer. What should I do and how?

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• Custom titlebar - system titlebar being shown for a brief moment?

  - by user291701

  Hi, I've got a custom layout I want to use as the titlebar of my android app. The technique found (linked at the bottom) works, but the system titlebar is displayed before onCreate() is called. Obviously that looks pretty jarring, as for a moment the system titlebar is shown, then my custom titlebar is shown: // styles.xml <resources> <style name="MyTheme"> <item name="android:windowTitleSize">40dip</item> </style> </resources> // One of my activities, MyTheme is applied to it in the manifest. protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); requestWindowFeature(Window.FEATURE_CUSTOM_TITLE); setContentView(R.layout.my_activity); getWindow().setFeatureInt(Window.FEATURE_CUSTOM_TITLE, R.layout.my_custom_header); } I could always hide the system titlebar and display my own in-line perhaps with each and every layout, but, that's not very friendly. Thanks http://www.londatiga.net/it/how-to-create-custom-window-title-in-android/

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• Custom stream wrappers, what could they be useful for in web applications?

  - by michael

  I suppose the concept is language agnostic, but I don't know what it's called in other languages. In PHP they're Stream Wrappers. In short, a wrapper class that allows manipulation of a streamable resource (resource that can be read to/written to/seek into, such as a file, a db, an url). For example, in a template engine (a view), upon including a template file such as: include "view.wrapper://path/to/my/template/file.phtml"; my custom wrapper, declared elsewhere and associated with "view.wrapper", would first intercepts the file to replace such things as short tags (<?=) with a more verbose counterpart (<?php echo). This allows developers to use short tags in views, even if the server isn't set to allow it. It can also be applied to the preprocessing of views pseudo syntax such as {@myVar} (e.g. replacing it with $this->myVar). This is only one application of custom stream wrappers, but the feature seems powerful enough to make me think that there are others that could make life a lot simpler for developers. What have you built, or thought about building, custom stream wrappers for? where have you seen some interesting implementations? I'm particularly interested in their applications in web development.

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• Adding UIViews with dynamic heights iphone

  - by Andy Jacobs

  in my viewcontroller's view i need to add a couple of custom UIView's, i do that in the loadView method so in my custom uiview's drawRect method i add a couple of UILabel's. in my viewcontroller's view i need to add all those custom UIView's underneath each other but i don't know what their height is sometimes 20px, 40px, 60px, depending on the outcome of the drawRect so when i init my custom UIView i give it a frame height of lets say 50.. but when the drawRect is done and it's only 20, 50 is too much so i need to adjust the frame height but how can i determine what's the visible height of the custom UIView and where can i catch it in my viewcontroller when the custom uiview has finished his drawRect method is there some kind of autoresize and where do i catch it in my viewcontroller, so i can position the custom uiview right under neath each other.

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• What should I use for the .SWF path in FlowPlayer's configuration if I'm developing from my desktop?

  - by codeninja

  I'm having an extremely difficulty time getting the flowplayer to show up and the worst part is I have no idea what is wrong because I'm not getting any error messages! I have an external javascript file: C:/desktop/mysite/js/jq/plugins.js calling $f() from: C:/desktop/mysite/thirdparty/flowplayer/flowplayer.js the swf files also live there... I'm working on file/desktop (no localhost or webserver) $(video.id).flowplayer("thirdparty/flowplayer/flowplayer-3.1.15.swf", { clip:{ .... }, // min Flash version version:[9,115], // older versions will see a custom message onFail:function(){ alert("Failed!"); }, onError:function(errCode,errMsg){ alert(errCode+errMsg); } }); I don't know what path to use for the SWFs to get them to load, is the path relative to the javascript (plugins.js) that calls $f() or is it relative to the path of the flowplayer.js ?? bangs head on wall

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• Cross Thread Exception in PropertyChangedEvent in WPF

  - by Ashish Ashu

  I have a ListView that is binded to my custom collection. At run time , I am updating the certain properties of my entity in my custom collection in my ViewModel. At the same time , I am also doing the custom sorting in the listview. The custom sorting is applicable when I click on the any column header of the listview. For example, I am updating the current datetime on my entity on every 5 seconds and simulaneously , I am applying custom sorting based on DateTime. (The Listview is third party control). Hence I am doing two operations on my custom collection at the same time. Should I pass the dispatcher of my control in the view model and call any methods ( which updates any entity in my custom collection ) through UI dispatcher ?

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• Help in XPath expression

  - by Ashish Gupta

  I have an XML document which contains nodes like following:- <a class="custom">test</a> <a class="xyz"></a> I was tryng to get the nodes for which class is NOT "Custom" and I wrote an expression like following:- XmlNodeList nodeList = document.SelectNodes("//*[self::A[@class!='custom'] or self::a[@class!='custom']]"); Now, I want to get IMG tags as well and I want to add the following experession as well to the above expression:- //*[self::IMG or self::img] ...so that I get all the IMG nodes as well and any tag other than having "custom" as value in the class attribute. Any help will be appreciated. EDIT :- I tried the following and this is an invalid syntax as this returns a boolean and not any nodelist:- XmlNodeList nodeList = document.SelectNodes("//*[self::A[@class!='custom'] or self::a[@class!='custom']] && [self::IMG or self::img]");

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• Can Hibernate automatically uppercase a column on read/insert via configuration?

  - by T Reddy

  We have some columns with data that must always be in uppercase to ensure uniqueness. I was wondering if hibernate can force all such columns to uppercase via some configuration file change? We actually use a custom UserType for encrypting/decrypting column data for some other table, but I figured that would be overkill just to uppercase everything... Alternatively, I was thinking about modifying the models such that all getters/setters will uppercase any string coming and going. The worst(?) case scenario is to modify the Oracle column constraint to ignore case while checking uniqueness. Any thoughts?

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• I created a custom (WPF) DataGridBoundColumn and get unexpected behaviour, what am I missing?

  - by aspic

  Hi, I am using a DataGrid (from Microsoft.Windows.Controls.DataGrid) to display items on and on this DataGrid I use a custom Column which extends DataGridBoundColumn. I have bound an ObservableCollection to the ItemSource of the DataGrid. Conversation is one of my own custom datatypes which a (among other things) has a boolean called active. I bound this boolean to the DataGrid as follows: DataGridActiveImageColumn test = new DataGridActiveImageColumn(); test.Header = "Active"; Binding binding1 = new Binding("Active"); test.Binding = binding1; ConversationsDataGrid.Columns.Add(test); My custom DataGridBoundColumn DataGridActiveImageColumn overrides the GenerateElement method to let it return an Image depending on whether the conversation it is called for is active or not. The code for this is: namespace Microsoft.Windows.Controls { class DataGridActiveImageColumn : DataGridBoundColumn { protected override FrameworkElement GenerateElement(DataGridCell cell, object dataItem) { // Create Image Element Image myImage = new Image(); myImage.Width = 10; bool active=false; if (dataItem is Conversation) { Conversation c = (Conversation)dataItem; active = c.Active; } BitmapImage myBitmapImage = new BitmapImage(); // BitmapImage.UriSource must be in a BeginInit/EndInit block myBitmapImage.BeginInit(); if (active) { myBitmapImage.UriSource = new Uri(@"images\active.png", UriKind.Relative); } else { myBitmapImage.UriSource = new Uri(@"images\inactive.png", UriKind.Relative); } // To save significant application memory, set the DecodePixelWidth or // DecodePixelHeight of the BitmapImage value of the image source to the desired // height or width of the rendered image. If you don't do this, the application will // cache the image as though it were rendered as its normal size rather then just // the size that is displayed. // Note: In order to preserve aspect ratio, set DecodePixelWidth // or DecodePixelHeight but not both. myBitmapImage.DecodePixelWidth = 10; myBitmapImage.EndInit(); myImage.Source = myBitmapImage; return myImage; } protected override FrameworkElement GenerateEditingElement(DataGridCell cell, object dataItem) { throw new NotImplementedException(); } } } All this works as expected, and when during the running of the program the active boolean of conversations changes, this is automatically updated in the DataGrid. However: When there are more entries on the DataGrid then fit at any one time (and vertical scrollbars are added) the behavior with respect to the column for all the conversations is strange. The conversations that are initially loaded are correct, but when I use the scrollbar of the DataGrid conversations that enter the view seems to have a random status (although more inactive than active ones, which corresponds to the actual ratio). When I scroll back up, the active images of the Conversations initially shown (before scrolling) are not correct anymore as well. When I replace my custom DataGridBoundColumn class with (for instance) DataGridCheckBoxColumn it works as intended so my extension of the DataGridBoundColumn class must be incomplete. Personally I think it has something to do with the following: From the MSDN page on the GenerateElement method (http://msdn.microsoft.com/en-us/library/system.windows.controls.datagridcolumn.generateelement%28VS.95%29.aspx): Return Value Type: System.Windows. FrameworkElement A new, read-only element that is bound to the column's Binding property value. I do return a new element (the image) but it is not bound to anything. I am not quite sure what I should do. Should I bind the Image to something? To what exactly? And why? (I have been experimenting, but was unsuccessful thus far, hence this post) Thanks in advance.

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• What is New in ASP.NET 4.0 Code Access Security

  - by Xiaohong

  ASP.NET Code Access Security (CAS) is a feature that helps protect server applications on hosting multiple Web sites, ASP.NET lets you assign a configurable trust level that corresponds to a predefined set of permissions. ASP.NET has predefined ASP.NET Trust Levels and Policy Files that you can assign to applications, you also can assign custom trust level and policy files. Most web hosting companies run ASP.NET applications in Medium Trust to prevent that one website affect or harm another site etc. As .NET Framework's Code Access Security model has evolved, ASP.NET 4.0 Code Access Security also has introduced several changes and improvements. The main change in ASP.NET 4.0 CAS In ASP.NET v4.0 partial trust applications, application domain can have a default partial trust permission set as opposed to being full-trust, the permission set name is defined in the <trust /> new attribute permissionSetName that is used to initialize the application domain . By default, the PermissionSetName attribute value is "ASP.Net" which is the name of the permission set you can find in all predefined partial trust configuration files. <trust level="Something" permissionSetName="ASP.Net" /> This is ASP.NET 4.0 new CAS model. For compatibility ASP.NET 4.0 also support legacy CAS model where application domain still has full trust permission set. You can specify new legacyCasModel attribute on the <trust /> element to indicate whether the legacy CAS model is enabled. By default legacyCasModel is false which means that new 4.0 CAS model is the default. <trust level="Something" legacyCasModel="true|false" /> In .Net FX 4.0 Config directory, there are two set of predefined partial trust config files for each new CAS model and legacy CAS model, trust config files with name legacy.XYZ.config are for legacy CAS model: New CAS model: Legacy CAS model: web_hightrust.config legacy.web_hightrust.config web_mediumtrust.config legacy.web_mediumtrust.config web_lowtrust.config legacy.web_lowtrust.config web_minimaltrust.config legacy.web_minimaltrust.config   The figure below shows in ASP.NET 4.0 new CAS model what permission set to grant to code for partial trust application using predefined partial trust levels and policy files:    There also some benefits that comes with the new CAS model: You can lock down a machine by making all managed code no-execute by default (e.g. setting the MyComputer zone to have no managed execution code permissions), it should still be possible to configure ASP.NET web applications to run as either full-trust or partial trust. UNC share doesn’t require full trust with CASPOL at machine-level CAS policy. Side effect that comes with the new CAS model: processRequestInApplicationTrust attribute is deprecated  in new CAS model since application domain always has partial trust permission set in new CAS model.   In ASP.NET 4.0 legacy CAS model or ASP.NET 2.0 CAS model, even though you assign partial trust level to a application but the application domain still has full trust permission set. The figure below shows in ASP.NET 4.0 legacy CAS model (or ASP.NET 2.0 CAS model) what permission set to grant to code for partial trust application using predefined partial trust levels and policy files:     What $AppDirUrl$, $CodeGen$, $Gac$ represents: $AppDirUrl$ The application's virtual root directory. This allows permissions to be applied to code that is located in the application's bin directory. For example, if a virtual directory is mapped to C:\YourWebApp, then $AppDirUrl$ would equate to C:\YourWebApp. $CodeGen$ The directory that contains dynamically generated assemblies (for example, the result of .aspx page compiles). This can be configured on a per application basis and defaults to %windir%\Microsoft.NET\Framework\{version}\Temporary ASP.NET Files. $CodeGen$ allows permissions to be applied to dynamically generated assemblies. $Gac$ Any assembly that is installed in the computer's global assembly cache (GAC). This allows permissions to be granted to strong named assemblies loaded from the GAC by the Web application.   The new customization of CAS Policy in ASP.NET 4.0 new CAS model 1. Define which named permission set in partial trust configuration files By default the permission set that will be assigned at application domain initialization time is the named "ASP.Net" permission set found in all predefined partial trust configuration files. However ASP.NET 4.0 allows you set PermissionSetName attribute to define which named permission set in a partial trust configuration file should be the one used to initialize an application domain. Example: add "ASP.Net_2" named permission set in partial trust configuration file: <PermissionSet class="NamedPermissionSet" version="1" Name="ASP.Net_2"> <IPermission class="FileIOPermission" version="1" Read="$AppDir$" PathDiscovery="$AppDir$" /> <IPermission class="ReflectionPermission" version="1" Flags ="RestrictedMemberAccess" /> <IPermission class="SecurityPermission " version="1" Flags ="Execution, ControlThread, ControlPrincipal, RemotingConfiguration" /></PermissionSet> Then you can use "ASP.Net_2" named permission set for the application domain permission set: <trust level="Something" legacyCasModel="false" permissionSetName="ASP.Net_2" /> 2. Define a custom set of Full Trust Assemblies for an application By using the new fullTrustAssemblies element to configure a set of Full Trust Assemblies for an application, you can modify set of partial trust assemblies to full trust at the machine, site or application level. The configuration definition is shown below: <fullTrustAssemblies> <add assemblyName="MyAssembly" version="1.1.2.3" publicKey="hex_char_representation_of_key_blob" /></fullTrustAssemblies> 3. Define <CodeGroup /> policy in partial trust configuration files ASP.NET 4.0 new CAS model will retain the ability for developers to optionally define <CodeGroup />with membership conditions and assigned permission sets. The specific restriction in ASP.NET 4.0 new CAS model though will be that the results of evaluating custom policies can only result in one of two outcomes: either an assembly is granted full trust, or an assembly is granted the partial trust permission set currently associated with the running application domain. It will not be possible to use custom policies to create additional custom partial trust permission sets. When parsing the partial trust configuration file: Any assemblies that match to code groups associated with "PermissionSet='FullTrust'" will run at full trust. Any assemblies that match to code groups associated with "PermissionSet='Nothing'" will result in a PolicyError being thrown from the CLR. This is acceptable since it provides administrators with a way to do a blanket-deny of managed code followed by selectively defining policy in a <CodeGroup /> that re-adds assemblies that would be allowed to run. Any assemblies that match to code groups associated with other permissions sets will be interpreted to mean the assembly should run at the permission set of the appdomain. This means that even though syntactically a developer could define additional "flavors" of partial trust in an ASP.NET partial trust configuration file, those "flavors" will always be ignored. Example: defines full trust in <CodeGroup /> for my strong named assemblies in partial trust config files: <CodeGroup class="FirstMatchCodeGroup" version="1" PermissionSetName="Nothing"> <IMembershipCondition    class="AllMembershipCondition"    version="1" /> <CodeGroup    class="UnionCodeGroup"    version="1"    PermissionSetName="FullTrust"    Name="My_Strong_Name"    Description="This code group grants code signed full trust. "> <IMembershipCondition      class="StrongNameMembershipCondition" version="1"       PublicKeyBlob="hex_char_representation_of_key_blob" /> </CodeGroup> <CodeGroup   class="UnionCodeGroup" version="1" PermissionSetName="ASP.Net">   <IMembershipCondition class="UrlMembershipCondition" version="1" Url="$AppDirUrl$/*" /> </CodeGroup> <CodeGroup class="UnionCodeGroup" version="1" PermissionSetName="ASP.Net">   <IMembershipCondition class="UrlMembershipCondition" version="1" Url="$CodeGen$/*"   /> </CodeGroup></CodeGroup>   4. Customize CAS policy at runtime in ASP.NET 4.0 new CAS model ASP.NET 4.0 new CAS model allows to customize CAS policy at runtime by using custom HostSecurityPolicyResolver that overrides the ASP.NET code access security policy. Example: use custom host security policy resolver to resolve partial trust web application bin folder MyTrustedAssembly.dll to full trust at runtime: You can create a custom host security policy resolver and compile it to assembly MyCustomResolver.dll with strong name enabled and deploy in GAC: public class MyCustomResolver : HostSecurityPolicyResolver{ public override HostSecurityPolicyResults ResolvePolicy(Evidence evidence) { IEnumerator hostEvidence = evidence.GetHostEnumerator(); while (hostEvidence.MoveNext()) { object hostEvidenceObject = hostEvidence.Current; if (hostEvidenceObject is System.Security.Policy.Url) { string assemblyName = hostEvidenceObject.ToString(); if (assemblyName.Contains(“MyTrustedAssembly.dll”) return HostSecurityPolicyResult.FullTrust; } } //default fall-through return HostSecurityPolicyResult.DefaultPolicy; }} Because ASP.NET accesses the custom HostSecurityPolicyResolver during application domain initialization, and a custom policy resolver requires full trust, you also can add a custom policy resolver in <fullTrustAssemblies /> , or deploy in the GAC. You also need configure a custom HostSecurityPolicyResolver instance by adding the HostSecurityPolicyResolverType attribute in the <trust /> element: <trust level="Something" legacyCasModel="false" hostSecurityPolicyResolverType="MyCustomResolver, MyCustomResolver" permissionSetName="ASP.Net" />   Note: If an assembly policy define in <CodeGroup/> and also in hostSecurityPolicyResolverType, hostSecurityPolicyResolverType will win. If an assembly added in <fullTrustAssemblies/> then the assembly has full trust no matter what policy in <CodeGroup/> or in hostSecurityPolicyResolverType.   Other changes in ASP.NET 4.0 CAS Use the new transparency model introduced in .Net Framework 4.0 Change in dynamically compiled code generated assemblies by ASP.NET: In new CAS model they will be marked as security transparent level2 to use Framework 4.0 security transparent rule that means partial trust code is treated as completely Transparent and it is more strict enforcement. In legacy CAS model they will be marked as security transparent level1 to use Framework 2.0 security transparent rule for compatibility. Most of ASP.NET products runtime assemblies are also changed to be marked as security transparent level2 to switch to SecurityTransparent code by default unless SecurityCritical or SecuritySafeCritical attribute specified. You also can look at Security Changes in the .NET Framework 4 for more information about these security attributes. Support conditional APTCA If an assembly is marked with the Conditional APTCA attribute to allow partially trusted callers, and if you want to make the assembly both visible and accessible to partial-trust code in your web application, you must add a reference to the assembly in the partialTrustVisibleAssemblies section: <partialTrustVisibleAssemblies> <add assemblyName="MyAssembly" publicKey="hex_char_representation_of_key_blob" />/partialTrustVisibleAssemblies>   Most of ASP.NET products runtime assemblies are also changed to be marked as conditional APTCA to prevent use of ASP.NET APIs in partial trust environments such as Winforms or WPF UI controls hosted in Internet Explorer.   Differences between ASP.NET new CAS model and legacy CAS model: Here list some differences between ASP.NET new CAS model and legacy CAS model ASP.NET 4.0 legacy CAS model  : Asp.net partial trust appdomains have full trust permission Multiple different permission sets in a single appdomain are allowed in ASP.NET partial trust configuration files Code groups Machine CAS policy is honored processRequestInApplicationTrust attribute is still honored    New configuration setting for legacy model: <trust level="Something" legacyCASModel="true" ></trust><partialTrustVisibleAssemblies> <add assemblyName="MyAssembly" publicKey="hex_char_representation_of_key_blob" /></partialTrustVisibleAssemblies>   ASP.NET 4.0 new CAS model: ASP.NET will now run in homogeneous application domains. Only full trust or the app-domain's partial trust grant set, are allowable permission sets. It is no longer possible to define arbitrary permission sets that get assigned to different assemblies. If an application currently depends on fine-tuning the partial trust permission set using the ASP.NET partial trust configuration file, this will no longer be possible. processRequestInApplicationTrust attribute is deprecated Dynamically compiled assemblies output by ASP.NET build providers will be updated to explicitly mark assemblies as transparent. ASP.NET partial trust grant sets will be independent from any enterprise, machine, or user CAS policy levels. A simplified model for locking down web servers that only allows trusted managed web applications to run. Machine policy used to always grant full-trust to managed code (based on membership conditions) can instead be configured using the new ASP.NET 4.0 full-trust assembly configuration section. The full-trust assembly configuration section requires explicitly listing each assembly as opposed to using membership conditions. Alternatively, the membership condition(s) used in machine policy can instead be re-defined in a <CodeGroup /> within ASP.NET's partial trust configuration file to grant full-trust.   New configuration setting for new model: <trust level="Something" legacyCASModel="false" permissionSetName="ASP.Net" hostSecurityPolicyResolverType=".NET type string" ></trust><fullTrustAssemblies> <add assemblyName=”MyAssembly” version=”1.0.0.0” publicKey="hex_char_representation_of_key_blob" /></fullTrustAssemblies><partialTrustVisibleAssemblies> <add assemblyName="MyAssembly" publicKey="hex_char_representation_of_key_blob" /></partialTrustVisibleAssemblies>     Hope this post is helpful to better understand the ASP.Net 4.0 CAS. Xiaohong Tang ASP.NET QA Team

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