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• Why is OnDragEnter not called?

  - by Harvey

  I have added the COleDropTarget variable to my view class, Registered it in the OnCreate(), which is being called at startup. I added the OnDragEnter and OnDrop virtual functions (not the others yet, as OnDragLeave). But they are not called when I drag (or drop) a piece of text over them. I just happened to think about the fact that I had already implemented the dropfiles function to the same window. Is this preventing the text drag? What else do I need? TIA, Harvey

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• Dinamically creating a member ID card as pdf using PHP?

  - by aefxx

  I need to code a PHP script that would let me generate a pdf file which displays a member ID card (something like a credit card used to identify oneself) at a certain resolution. Let me explain: I do have the basic blueprint of the card in png file format. The script needs to drop in a member's name and birth day along with a serial. So far, no problem - there are plenty of good working PHP librarys out there. My problem is to ensure that the resulting pdf (the generated image of the card, to be precise) meets a certain resolution (preferably 300dpi), so that printing it would look right. Any ideas? EDIT I solved it using the TCPDF library which let's you scale images at a certain resolution. Get it here: http://www.tecnick.com/public/code/cp_dpage.php?aiocp_dp=tcpdf

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• How to drag items between 2 sorted lists with jQuery?

  - by sa125

  Hi - I'm trying to implement drag/drop/sort between 2 list elements: <ul id="first"> <li>item 1</li> <li>item 2</li> <li>item 3</li> </ul> <ul id="second"> <li>item 4</li> <li>item 5</li> <li>item 6</li> </ul> Basically I just want to be able to pass items between the lists and sort the items in each list. What's the simplest way to implement this using jQuery?

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• Winforms control that works like ajax tag-completion

  - by Sargola

  Heya, I want to create a winforms app where you can assign tags to an entity. ofc I want the customer to re-use existing tags a lot. That's why I want to show them the list of tags while they are typing (similar to intellisense in VS and the tags-dropdown even here in stackoverflow ;)) do you have any control(s) in mind that offers this functionality? can I reuse a ComboBox for this? (here I need to drop it down programatically - how?) I want to have the taglist getting input-focus but not lose the mainform-focus, and I want it to be on top over all windows and even range out of the mainform-area (like intellisense in vs) thx!

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• MouseLeftButtonUpEvent & Bubbling in Canvas

  - by Maxim

  Hi guys, I think I'm going crazy... I have Canvas with event handlers for MouseMove & MouseLeftButtonUp. However MouseLeftButtonUp is not being fired when it happens with cursor over TextBlock that is inside canvas. (it fires just fine when I release mouse button in empty space of the canvas) I tried attaching handler via AddHandler and using regular += syntax, nothing seems to work. I tried using Canvas.CaptureMouse() but it doesnt seem to work either (CaptureMouse returns true btw). MouseLeftButtonUp just doesnt want to propagate to it's parent when it happens over TextBlock (or any other element with IsHitTestVisible = true) inside Canvas. Please help.

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• Efficient Map Overlays in on Android Google Map...

  - by Ahsan

  Hi Friends, I want to do the following and am kind of stuck on these for a few days.... 1) I have used helloItemizedOverlay to add about 150 markers and it gets very very slow.....any idea what to do ? I was thinking about threads....(handler) ... 2) I was trying to draw poly lines ( I have encoded polylines, but have managed to decoded those) that move when I move the map.....(the only solution that I found was for Geopoints to be transformed into screen co-ordinates...which wont move if I move the map !) 3) I was looking for some sort of a timer function that executes a given function, say, every 1 minute or so.... 4) I was also looking for ways to clear the Google map from all the markers/lines etc.... Thanks a lot... :) - ahsan

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• Synchronizing scroll positions for 2 WPF DataGrids

  - by Philipp Schmid

  I am trying to synchronize the horizontal scroll position of 2 WPF DataGrid controls. I am subscribing to the ScrollChanged event of the first DataGrid: <toolkit:DataGrid x:Name="SourceGrid" ScrollViewer.ScrollChanged="SourceGrid_ScrollChanged"> I have a second DataGrid: <toolkit:DataGrid x:Name="TargetGrid"> In the event handler I was attempting to use the IScrollInfo.SetHorizontalOffset, but alas, DataGrid doesn't expose IScrollInfo: private void SourceGrid_ScrollChanged(object sender, ScrollChangedEventArgs e) { ((IScrollInfo)TargetGrid).SetHorizontalOffset(e.HorizontalOffset); // cast to IScrollInfo fails } Is there another way to accomplish this? Or is there another element on TargetGrid that exposes the necessary IScrollInfo to achieve the synchronization of the scroll positions? BTW, I am using frozen columns, so I cannot wrap both DataGrid controls with ScrollViewers.

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• Passing Custom event arguments to timer_TICK event

  - by Nimesh

  I have class //Create GroupFieldArgs as an EventArgs public class GroupFieldArgs : EventArgs { private string groupName = string.Empty; private int aggregateValue = 0; //Get the fieldName public string GroupName { set { groupName = value; } get { return groupName; } } //Get the aggregate value public int AggregateValue { set { aggregateValue = value; } get { return aggregateValue; } } } I have another class that creates a event handler public class Groupby { public event EventHandler eh; } Finally I have Timer on my form that has Timer_TICK event. I want to pass GroupFieldArgs in Timer_TICK event. What is the best way to do it?

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• capture MouseEnter / MouseLeave on Image in WPF TreeViewItem

  - by pileggi

  Hi! I've done my TreeView all with XAML but now I'd like to manage an event with code-behind and I don't know how. The HierarchicalDataTemplate contains an Image. I need to capture the events MouseEnter / MouseLeave on the Image. I've tried in this way: <Image x:Name="imgArticolo" Source="{Binding imgArt}"> <Image.Style TargetType="{x:Type Image}"> <Style> <EventSetter Event="MouseEnter" Handler="iArt_MouseEnter"/> </Style> </Image.Style> </Image> But it doesn't work: error: "MouseEnter member not recognized or not accessible" (from italian) Can you, please, help me? Thank you! Pileggi

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• AJAX CascadingDropdown - Setting the selected index - C# - ASP.NET

  - by rpm1984

  Hi, I have a CascadingDropDown on an ASP.NET page. Now, the prompt text is "Select State". (list of states). However, on a different version of this page (ie querystring), i might want to set the selected index to "California" for example. How can i do this? The web service used by the ajax control (ie GetStates) gets invoked at the same time the jquery document.ready function is triggered (ie asynchronously). So when i try and set the selected index in jquery, the items are not yet bound. Is there a way to attach a handler to the ajax dropdown so that i can set the selected index once the webservice call has completed, and the items are bound? Thanks in advance.

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• Multiple MCs, Single Listener, AsBroadcaster

  - by Brett

  I'm currently working trying to have multiple MCs inside a container MC which when they mini MCs are clicked will broadcast a message so that I can act upon them. This would be simple in AS 3 as it would be mc.addEventListener(MouseEvent.CLICK, obj); however, this is AS 2 and so I am semi-forced to use the broadcastMessage('myMessage'); and mc.addListener(obj); event handler. The main problem is that the broadcaster isn't broadcasting any messages. The second problem is that there are 5 MCs and when I click one of them, I get 5 trace messages about the click. I can't seem to keep the MC clicks unique even though they are all given separate instance names vie the properties panel. Any help would be appreciated. A link to my code is here (pastie.org #481511). Can you see anything wrong?

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• Django - categories & sub-categories

  - by Bluey

  Some advice needed on how I can structure my models for my site. I have seen this post from Django project but still a little lost. Also come across Django-MPTT - but that's no help and possibly overkill. I'm looking to have categories & subcategories that are shown in the URLs like this: mysite.com/Level1/Maths/Calculations/Addition/ mysite.com/Level3/English/ mysite.com/Level2/English/Storytelling/ In my admin interface I'm looking to have drop downs for each level of category or subcategory. Also at each level I will be querying items (another model) like get all items that have the category 'Level1' AND 'Maths'. There could also be a situation where I have five or more subcategories. How is it best to create my models for best performance? It it worth using tagging instead?

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• how to debug ExceptionInInitializationError?

  - by grmn.bob

  I am getting an exception in a very simple 'study' application, so I expect the problem to be in my project setup, but I don't know how to debug ... What is the context of the exception, "ExceptionInInitializationError"? Where is it documented? A: Search Android Developers Guide Stack trace from within Eclipse Debugger with: select thread - right-click - copy stack Thread [<3> main] (Suspended (exception ExceptionInInitializerError)) Class.newInstance() line: 1479 Instrumentation.newActivity(ClassLoader, String, Intent) line: 1021 ActivityThread.performLaunchActivity(ActivityThread$ActivityRecord, Intent) line: 2367 ActivityThread.handleLaunchActivity(ActivityThread$ActivityRecord, Intent) line: 2470 ActivityThread.access$2200(ActivityThread, ActivityThread$ActivityRecord, Intent) line: 119 ActivityThread$H.handleMessage(Message) line: 1821 ActivityThread$H(Handler).dispatchMessage(Message) line: 99 Looper.loop() line: 123 ActivityThread.main(String[]) line: 4310 Method.invokeNative(Object, Object[], Class, Class[], Class, int, boolean) line: not available [native method] Method.invoke(Object, Object...) line: 521 ZygoteInit$MethodAndArgsCaller.run() line: 860 ZygoteInit.main(String[]) line: 618 NativeStart.main(String[]) line: not available [native method]

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• Rows dropping when I try to join data from two tables

  - by blcArmadillo

  I have a fairly simple query I'm try to write. If I run the following query: SELECT parts.id, parts.type_id FROM parts WHERE parts.type_id=1 OR parts.type_id=2 OR parts.type_id=4 ORDER BY parts.type_id; I get all the rows I expect to be returned. Now when I try to grab the parent_unit from another table with the following query six rows suddenly drop out of the result: SELECT parts.id, parts.type_id, sp.parent_unit FROM parts, serialized_parts sp WHERE (parts.type_id=1 OR parts.type_id=2 OR parts.type_id=4) AND sp.parts_id = parts.id ORDER BY parts.type_id In the past I've never really dealt with ORs in my queries so maybe I'm just doing it wrong. That said I'm guessing it's just a simple mistake. Let me know if you need sample data and I'll post some. Thanks.

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• How to remove child(Movieclip) and add to new parent (Movieclip)

  - by vineth

  Hi, I need to remove the child(movieClip) from the parent(movieClip) while dragging and add the same child(movieClip) to another movieclip when dropped. this method is used for dragging function pickUp(event:MouseEvent):void { event.target.startDrag(); } when i drop it function dropIt(event:MouseEvent):void { event.target.parent.removeChild(event.target); //for removing from previous parent clip event.target.dropTarget.parent.addChild(event.target); // add to new Moviclip } But the clip is not visible or not available while dropping... Help me to overcome from this Problem.

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• Hiding privates from Javascript Intellisense

  - by Robert Koritnik

  Is it possible to hide certain functions/fields from displaying in javascript intellisense drop down list in Visual Studio 2008? Either by javascript documentaion XML of by naming privates in a certain way? I've seen <private /> in jquery vsdoc file that implies exactly this behaviour, but doesn't meet my expectations { __hiddenField: 0, /// <private /> increment: function(){ /// <summary>Increments a private variable</summary> __hiddenField++; } } But since fields can't contain documentation (because they have no body) they have to be documented at the top. But still doesn't work: { /// <field name="__hiddenField" type="Number" private="true">PRIVATE USE</field> __hiddenField: 0, increment: function(){ /// <summary>Increments a private variable</summary> __hiddenField++; } } Impossible is a perfectly possible answer and will be accepted if you have the knowledge that it's actually not possible.

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• ASP.NET AJAX UpdatePanel problem

  - by Velika

  I'll try and be concise: 1) I have a dropdownlist with Autopostback set to TRUE 2) I have an UpdatePanel that contains a Label. 3) When the downdownlist selection is changed, I want to update the label. Problem: Focus is lost on the dropdownlist, forcing the user to click on the dropdownlist to reset focus back to the control. My "solution": In the DropDownList_SelectionChanged event, set focus back to the drop down list: dropdownlist1.focus() Problem: While this works great in IE, Firefox and Chrome change the scroll position such that the control which was assigned focus is positioned at the bottom on the visible portion of the browser window. This is often a very disorientating side effect. How can this be avoided so it works in FF as it does in IE?

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• HTML - How do I know when all frames are loaded?

  - by Yuval Peled

  I'm using .NET WebBrowser control. How do I know when a web page is fully loaded? I want to know when the browser is not fetching any more data. (The moment when IE writes 'Done' in its status bar...). Notes: The DocumentComplete/NavigateComplete events might occur multiple times for a web site containing multiple frames. The browser ready state doesn't solve the problem either. I have tried checking the number of frames in the frame collection and then count the number of times I get DocumentComplete event but this doesn't work either. this.WebBrowser.IsBusy doesn't work either. It is always 'false' when checking it in the Document Complete handler.

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• Multi page ordering form php or ajax

  - by Adam

  I'm looking to create a multi page ordering form the first page would contain some dropdown and text fields, the second page would contain more text fields, the third page would be an order summery with paypal payment option. I'm just wondering what the best way to create this order form is. I've used sessions in the past but never with users entering in text and picking items from drop downs, does anyone have any resources for doing this? Or does anyone know of a jquery or other ajax example or plugin I might be able to use and modify. any insight would be a big help. thanks

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• How can I stop IIS7 from using HttpHandlers?

  - by mcintyre321

  I'm having a bit of a play around with IIS7, just trying to catch events manually in global.asax and skip the ASP pipeline entirely. To this end, I've set <httpHandlers> <clear/> </httpHandlers> <httpModules> <clear/> </httpModules> but when I call the server I get a YSOD [HttpException]: No http handler was found for request type 'GET' at System.Web.HttpApplication.MapHttpHandler(HttpContext context, String requestType, VirtualPath path, String pathTranslated, Boolean useAppConfig) at System.Web.HttpApplication.MapHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) What do I need to do to completely prevent IIS from handling things? What I want is just to do Response.Writes in event handlers and async methods set up in HttpApplication.Init

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• detachEvent not working with named inline functions

  - by Polshgiant

  I ran into a problem in IE8 today (Note that I only need to support IE) that I can't seem to explain: detachEvent wouldn't work when using a named anonymous function handler. document.getElementById('iframeid').attachEvent("onreadystatechange", function onIframeReadyStateChange() { if (event.srcElement.readyState != "complete") { return; } event.srcElement.detachEvent("onreadystatechange", onIframeReadyStateChange); // code here was running every time my iframe's readyState // changed to "complete" instead of only the first time }); I eventually figured out that changing onIframeReadyStateChange to use arguments.callee (which I normally avoid) instead solved the issue: document.getElementById('iframeid').attachEvent("onreadystatechange", function () { if (event.srcElement.readyState != "complete") { return; } event.srcElement.detachEvent("onreadystatechange", arguments.callee); // code here now runs only once no matter how many times the // iframe's readyState changes to "complete" }); What gives?! Shouldn't the first snippet work fine?

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• Multiple rows with a single INSERT in SQLServer 2008

  - by Todd

  I am testing the speed of inserting multiple rows with a single INSERT statement. For example: INSERT INTO [MyTable] VALUES (5, 'dog'), (6, 'cat'), (3, 'fish) This is very fast until I pass 50 rows on a single statement, then the speed drops significantly. Inserting 10000 rows with batches of 50 take 0.9 seconds. Inserting 10000 rows with batches of 51 take 5.7 seconds. My question has two parts: Why is there such a hard performance drop at 50? Can I rely on this behavior and code my application to never send batches larger than 50? My tests were done in c++ and ADO.

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• POSIX threads and signals

  - by Donal Fellows

  I've been trying to understand the intricacies of how POSIX threads and POSIX signals interact. In particular, I'm interested in: What's the best way to control which thread a signal is delivered to (assuming it isn't fatal in the first place)? What is the best way to tell another thread (that might actually be busy) that the signal has arrived? (I already know that it's a bad idea to be using pthread condition variables from a signal handler.) For reference about why I want this, I'm researching how to convert the TclX package to support threads, or to split it up and at least make some useful parts support threads. Signals are one of those parts that is of particular interest.

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• Why `#import("dart:unittest")` can't run?

  - by Freewind

  I write some dart test code: #import("dart:unittest"); main() { test('this is a test', () { int x = 2+3; expect(x).equals(5); }); } It doesn't display any error in dart editor, but when I press the "run" button, it reports: Do not know how to load 'dart:unittest''file:///home/freewind/dev/dart/editor /samples/shuzu.org/test/model_test.dart': Error: line 1 pos 1: library handler failed #import("dart:unittest"); ^ I see there is a "dart:unittest" library in my dart-sdk. Why it can't be run?

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• Why can event handlers can only be bound to HttpApplication events during IHttpModule initialization

  - by Venemo

  This is just another "working in dev server, why not working in IIS" type question. So, I created a nice DAL using NHibernate as described here. When creating an ISession, I hook up an event handler to the HttpApplication.EndRequest to take care of cleaning it up. However, I deployed my site to IIS and it says: Event handlers can only be bound to HttpApplication events during IHttpModule initialization. Since when? What for? Why? How can I bypass it?

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