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• Game/Application menu as a central part of the game/application

  - by Javalicious

  I am developing a Java application, well, it's actually a small game. I want to build up the application as follows: when it starts, a window should appear which has a menu with four choices: 'Start game', 'Options', 'Highscores' and 'Quit'. If you then click game, the game starts, preferrably in the same window, if you click options, well you know the drill. How should I program this? At the moment, I'm considering using a CardLayout, but I'm not sure this is the right way to do this. Do you guys maybe have another proposition?

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• Trying to convert openGL to MFC coordinates and having Problems with "gluProject"

  - by Erez

  Hi, i'm trying to find the naswer on the web and can't find a full solution that i can use and that will work... I'm developing a MFC project with static picture as the canvas for an openGL class that draw the grphics for my game. On moush down, i need to retrive a shape coordinate from the openGL class. I'm looking for a way to convert the openGL coordinates to MFC coordinates but no matter what i try i get junk after using the gluProject or gluUnProject (i've tried to do both ways but non is working) GLdouble modelMatrix[16]; glGetDoublev(GL_MODELVIEW_MATRIX,modelMatrix); GLdouble projMatrix[16]; glGetDoublev(GL_PROJECTION_MATRIX,projMatrix); int viewport[4]; glGetIntegerv(GL_VIEWPORT,viewport); POINT mouse; // Stores The X And Y Coords For The Current Mouse Position GetCursorPos(&mouse); // Gets The Current Cursor Coordinates (Mouse Coordinates) ScreenToClient(hWnd, &mouse); GLdouble winX, winY, winZ; // Holds Our X, Y and Z Coordinates winX; = (float)point.x; // Holds The Mouse X Coordinate winY; = (float)point.y; // Holds The Mouse Y Coordinate winY = (float)viewport[3] - winY; glReadPixels(winX, winY, 1, 1, GL_DEPTH_COMPONENT, GL_FLOAT, &winZ); GLdouble posX=s1->getPosX(), posY=s1->getPosY(), posZ=s1->getPosZ(); // Hold The Final Values gluUnProject( winX, winY, winZ, modelMatrix, projMatrix, viewport, &posX, &posY, &posZ); gluProject(posX, posY, posZ, modelMatrix, projMatrix, viewport, &winX, &winY, &winZ); This is just part of the code i've tried. ofcourse not gluProject and gluUnProject together. just had them both here to show.....and i know there is lots of junk over there, its from some of my tries... p.s. i've tried many many more combinations and examples from the web and nothing seem to work in my case.... Can any one show me what is the right way to do the transformation? 10x

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• iPhone hitTest broken after rotation

  - by Adam

  Hi all, I have a UIView that contains a number of CALayer subclasses. I am using the following code to detect which layer a touch event corresponds to: - (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event { UITouch *touch = [touches anyObject]; CGPoint touchPoint = [touch locationInView:self]; NSLog(@"%@,%@",NSStringFromCGPoint(point),[self.layer hitTest:point].name); } This works fine until the device is rotated. When the device is rotated all current layers are removed from the superlayer, and new CALayers are created to fit the new orientation. The new layers are correctly inserted and viewable in the correct orientation. After the rotation the hitTest method consistently returns nil when clearly clicking on the newly created layers and registers for locations of layers which are incorrect. The coordinates of the hit test are correct, but no layers are found. Am I missing a function call or something after handling the rotation? Cheers, Adam

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• image upload-showing image on a form

  - by mnmyles

  hi guyz; i am using netbeans6.7.1 and phpmyadmin for my db to develop a java application to manage students records i want to upload students photos through browsing by clicking a browse buton which i have included in my interface I mean when i click on that button a JFilechooser pops up which filter only images(i have acomplished this) 1.) what i need is when i click on the "Attach button" of the JFilechooser, i want the image i chose to be attached to a jtextArea on the form i'm working with and the JFilechooser be diposed off. 2.) Also how i can save this form together with the image to a database table Is there a place where i can find a good guide/tutorial about that

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• How do I suppress eclipse warning: Referenced identifier 'VIEWNAME:secondaryid' in attribute 'id' ca

  - by Jeremy

  In eclipse 3.4, here is the section of my plugin.xml: <extension point="org.eclipse.ui.views"> <view allowMultiple="true" class="the.full.class.name" icon="images/icon.gif" id="VIEWNAME" name="View Name"> </view> </extension> <extension point="org.eclipse.ui.perspectiveExtensions"> <perspectiveExtension targetID="com.p21csi.fps.sim.rcp.perspective.SimPerspective"> <view closeable="false" id="VIEWNAME:secondaryid" minimized="false" moveable="false" ratio=".75" relationship="left" relative="org.eclipse.ui.editorss" showTitle="true" standalone="true" visible="true"> </view> </perspectiveExtension> </extension> The application works fine, I just can't get rid of that annoying warning!

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• WPF - Binding problem

  - by Erez

  Why after clicking the button the text in the textblock doesn't change ? XAML: <Grid> <Grid.RowDefinitions> <RowDefinition/> <RowDefinition/> </Grid.RowDefinitions> <TextBlock Text="{Binding Name}"/> <Button Click="Button_Click" Grid.Row="1" Margin="20">Click Me</Button> </Grid> Code behind: public partial class Window1 : Window, INotifyPropertyChanged { private Person _myPerson; public Person MyPerson { get { return _myPerson; } set { _myPerson = value; if (PropertyChanged != null) { PropertyChanged(this, new PropertyChangedEventArgs("MyPerson")); } } } public Window1() { MyPerson = new Person { Name = "A" }; DataContext = MyPerson; InitializeComponent(); } private void Button_Click(object sender, RoutedEventArgs e) { MyPerson = new Person { Name = "B" }; } #region INotifyPropertyChanged Members public event PropertyChangedEventHandler PropertyChanged; #endregion }

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• Treeview - Link Button Post Back Problem

  - by cagin

  Hi there I' m working on a web application. That has a master page and two pages. These pages under the that master page. I am trying navigate that pages with a TreeView which on the master page. When i click to treeview node i can go to page which i want but there is no postback. But if i use linkbutton postback event happen. I use a break point on master page's pageload event. When i use treeview, v.s doesnt stop on break point line but if i use link button v.s stop on that line. How can i do postback with using treeview? Thanks for your helps

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• How to close window in ie using link and onbeforeunload?

  - by Salil

  Hi All, I open a pop-up window using following code in main.html function openwindow(url) { window.open(url, "mywindow","location=1,status=1,scrollbars=1,resizable=no,width=650,height=650"); } Open In My child.html i used function closewindow() { self.close(); } function closeIt() { return "Your chat will be terminated. Are you sure?" } < a href="javascript:void(0)" onclick="closewindow();"Close Window< /a     When i click on close window it gize me alert message that i given on event onbeforeunload but it not close the window when i click on Ok.Also this happens only in I.E. & working fine in mozilla, netscape, safari. I checked it on IE6 & IE8 Any help is Appreciated. Regards, Salil Gaikwad

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• Issue passing NSMutableDictionary to a method

  - by roswell

  Hello all, I've got a chunk of code that's passing an NSMutableDictionary (amongst other things) to a method in another class: [self.shuttle makeAPICallAndReturnResultsUsingMode:@"login" module:@"login" query:credentials]; The NSMutableArray credentials is previously defined like this: NSMutableDictionary *credentials = [[NSMutableDictionary alloc] init]; [credentials setObject:username forKey:@"username"]; [credentials setObject:password forKey:@"password"]; The method that receives it looks like this: -(id)makeAPICallAndReturnResultsUsingMode:(NSString *)mode module:(NSString *)module query:(NSMutableDictionary *)query The code works fine up until this point within the above method: [query setObject:self.sessionID forKey:@"session_id"]; At this point, the application terminates -- the console informs me of this exception: * Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '* -[NSCFDictionary setObject:forKey:]: method sent to an uninitialized mutable dictionary object' This leads me to believe that I must initialize NSMutableDictionary in some way in my new method before I can access it, but I have no idea how. Any advice?

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• Add Command prompt in VS 2008 Express Edition manually

  - by Kumar

  Hi all, To add the Command prompt in VS 2008 express edition, i have done the following steps: Tools-ExternalTools-Click on Add- Then I have entered the following information. Title: Visual Studio 2008 Command Prompt Command: cmd.exe Arguments: %comspec% /k ""C:\Program Files\Microsoft Visual Studio 9.0\VC\vcvarsall.bat"" x86 Initial Directory: $(ProjectDir) Then OK/Apply: After this when I went to Tools Menu and click on Visual Studio 2008 Command Prompt, command prompt open but got the following error message: '"C:\Program Files\Microsoft Visual Studio 9.0\VC\vcvarsall.bat"' is not recognized as an internal or external command, operable program or batch file. C:\Program Files\Microsoft Visual Studio 9.0\Common7\IDE Please somebody help me to fix this problem.. Or somebody teach me freshly how to add command prompt in Tools Menu manually in VS 2008 Express Edition. Thanks, Kumar

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• Window out of the screen when maximized using WPF shell integration library

  - by Eduardo Molteni

  I'm using the WPF Shell Integration Library to create a custom chrome of my wpf app. All is good, but when maximizing the app, 6 or 7 pixels are out of the screen. This is the code I'm using: <Style TargetType="{x:Type local:MainWindow}"> <Setter Property="shell:WindowChrome.WindowChrome"> <Setter.Value> <shell:WindowChrome ResizeBorderThickness="6" CaptionHeight="10" CornerRadius="0" GlassFrameThickness="1"/> </Setter.Value> </Setter> <Setter Property="Template"> <Setter.Value> <ControlTemplate TargetType="{x:Type local:MainWindow}"> <Grid> <Border BorderThickness="1" BorderBrush="#389FD1" Background="#389FD1"> <ContentPresenter Margin="0,22,0,0" Content="{TemplateBinding Content}"/> </Border> <StackPanel Orientation="Horizontal" HorizontalAlignment="Right" VerticalAlignment="Top" > <TextBlock Text="{Binding NombreUsuario}" Foreground="White" Margin="5,5,20,5" Opacity=".8" /> <Button Style="{StaticResource ImageButton}" Height="20" Width="20" Margin="0" Click="WindowMinimize" shell:WindowChrome.IsHitTestVisibleInChrome="True"> <Image Height="10" Width="10" Source="/Resources/Images/minimize.png" /> </Button> <Button Style="{StaticResource ImageButton}" Height="20" Width="20" Margin="0" Click="WindowMaximizeRestore" shell:WindowChrome.IsHitTestVisibleInChrome="True" > <Image Height="10" Width="10" Source="/Resources/Images/maximize.png" /> </Button> <Button Style="{StaticResource ImageButton}" Height="20" Width="20" Margin="0" Click="WindowClose" shell:WindowChrome.IsHitTestVisibleInChrome="True"> <Image Height="10" Width="10" Source="/Resources/Images/close.png" /> </Button> </StackPanel> </Grid> </ControlTemplate> </Setter.Value> </Setter> </Style>

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• Efficient 4x4 matrix inverse (affine transform)

  - by Budric

  Hi, I was hoping someone can point out an efficient formula for 4x4 affine matrix transform. Currently my code uses cofactor expansion and it allocates a temporary array for each cofactor. It's easy to read, but it's slower than it should be. Note, this isn't homework and I know how to work it out manually using 4x4 co-factor expansion, it's just a pain and not really an interesting problem for me. Also I've googled and came up with a few sites that give you the formula already (http://www.euclideanspace.com/maths/algebra/matrix/functions/inverse/fourD/index.htm). However this one could probably be optimized further by pre-computing some of the products. I'm sure someone came up with the "best" formula for this at one point or another? Thanks.

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• 2D Inverse Kinematics Implementation

  - by Vic

  Hi I am trying to implement Inverse Kinematics on a 2D arm(made up of three sticks with joints). I am able to rotate the lowest arm to the desired position. Now, I have some questions: How can I make the upper arm move alongwith the third so the end point of the arm reaches the desired point. Do I need to use the rotation matrices for both and if yes can someone give me some example or an help and is there any other possibl;e way to do this without rotation matrices??? The lowest arm only moves in one direction. I tried google it, they are saying that cross product of two vectors give the direction for the arm but this is for 3D. I am using 2D and cross product of two 2D vectors give a scalar. So, how can I determine its direction??? Plz guys any help would be appreciated.... Thanks in advance Vikram

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• Best practice to handle Parent Form Child Form relation using Presentation Model

  - by Rajarshi

  According to Presentation Model notes by Martin Fowler and also on MSDN documentation about Presentation Model, it is explained that the Presentation Model Class should be unaware of the UI class and similarly Business Model Class should be unaware of the Presentation Model class. The UI should databind extensively to the Presentation Model, the Presentation Model in turn will co-ordinate with one or more Domain/Business Model objects to get the job done. The Presentation Model basically presents the Domain Model data in a way to facilitate maximum data binding in UI, allowing the UI take as less decisions as possible and thus increase testability of Presentation behaviours. This also makes the presentation model class generic, i.e. agnostic of any particular UI technology. Now, consider there is a List form (say CustomerList) and there is another Root form (say Customer) and there is a Use Case of allowing to Edit a Customer from the CustomerList form on a button click. For simplicity of discussion, consider that some actions took place when Customer List is opened from menu (i.e. Customer menu clicked) and the Customer List has been shown from the Menu click event. Now as per the above Use Case, I need to open the Customer Root UI (single Customer) from the Customer List. How do I do that? Build necessary objects (BusinessModel, PresentationModel, UI) in click event of Edit button and call CustomerEdit UI from there? Build the CustomerEdit UI from Presentation Model Class and show UI from presentation model? this can be done in any of the two ways below - a. Create objects in the following sequence DomainModel-PresentationModel-UIForm b. Use Unity.Resolve(); Either ways, Presentation Model is violated as the P model now has to the refer the concrete UI assembly, where CustomerEdit is located. Also the P Model has to refer and use a WinForm directly making it less UI technology agnostic. Even though the violations are in theory and can be ignored, I would still seek the community's opinion about whether I am going wrong direction. Please suggest if there's a better way to call the Child Form from the List (Parent) Form. Rajarshi

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• jquery boxy plugin: prevent multiple instances of the same dialog when clicking the link multiple ti

  - by Lyon

  Hi, I'm using the Boxy jQuery plugin to open dialog windows and populating it through ajax. http://onehackoranother.com/projects/jquery/boxy/ Here's my code so far: $("a.create").click(function (e) { url = $(e.target).attr('href'); Boxy.load(url, {title:'Test'}); }); This opens up a dialog alright. However, if I click the link again, another dialog will open. How can I make it such that the previously opened Boxy dialog will come into focus? I only want one instance of this dialog. I tried assigning a variable to var ele = Boxy.load(); but the variable ele returns undefined... Alas, I can't make out much from the limited Boxy documentation available. Enabling the option modal: true would prevent the user from clicking on the link multiple times, but I don't want the overlay to show. Thanks for any light you can shed on this. -Lyon

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• Enterprise distribution Program for iPhone

  - by Mohammed Sadiq

  Hi all, I would like to implement a application which backs up all the internal datas like sms, mms, videos, audios, documents, call history stored in iPhone. But this seems to be not possible with api docs that the apple has released so far ... I have gone through the pdf of ENterprise distribution program and some of the links related to Enterprise Distribution Program, specifies about the Remote wipe and accessing of internal datas like Calendar, sms, mms ect .... But they didnt mention how to do it programmatically. Does Apple provide any special priviledges like extra api support to access the internal data in their Enterprise Distribution Program?. Is there any difference between Enterprise Distribution Program and Standard Distribution Program in the development point of view? And since in-house distribution does not require Apple approval, shall we use some other method which are not officially mentioned in apple docs, to access the internal stored data .. If so can anyone point out the way to do it? Any help would be greatly appreciated awaiting for your response Best regards, Mohammed Sadiq ....

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• How to do early binding for event handler in JavaScript? (example with jQuery)

  - by Sven Larson

  JavaScript's late binding is great. But how do I early bind when I want to? I am using jQuery to add links with event handlers in a loop to a div. The variable 'aTag ' changes in the loop. When I click the links later, all links alert the same message, which is the last value of 'aTag'. How do I bind a different alert message to all links? All links should alert with the value that aTag had when the event handler was added, not when it was clicked. for (aTag in tagList) { if (tagList.hasOwnProperty(aTag)) { nextTag = $('<a href="#"></a>'); nextTag.text(aTag); nextTag.click(function() { alert(aTag); }); $('#mydiv').append(nextTag); $('#mydiv').append(' '); } }

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• find the position of the cursor where user have clicked and display one div where user have clicked.

  - by Avinash

  Hi all, I want to determine the position of the cursor where user have clicked. And display one div at bottom side of the page where user have clicked. For example on stack over flow home page if some one click on the logo. Then the div should be displayed at the bottom position of the logo. Same way if i click on the bottom link then that div should be displayed at the bottom portion of the page. I am using mootools as my JS framework. But any JavaScript code will be helpful for me. Hope this is clear to all. Thanks in advance Avinash

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• Vector math, finding coördinates on a planar between 2 vectors

  - by Will Kru

  I am trying to generate a 3d tube along a spline. I have the coördinates of the spline (x1,y1,z1 - x2,y2,z2 - etc) which you can see in the illustration in yellow. At those points I need to generate circles, whose vertices are to be connected at a later stadium. The circles need to be perpendicular to the 'corners' of two line segments of the spline to form a correct tube. Note that the segments are kept low for illustration purpose. [apparently I'm not allowed to post images so please view the image at this link] http://img191.imageshack.us/img191/6863/18720019.jpg I am as far as being able to calculate the vertices of each ring at each point of the spline, but they are all on the same planar ie same angled. I need them to be rotated according to their 'legs' (which A & B are to C for instance). I've been thinking this over and thought of the following: two line segments can be seen as 2 vectors (in illustration A & B) the corner (in illustraton C) is where a ring of vertices need to be calculated I need to find the planar on which all of the vertices will reside I then can use this planar (=vector?) to calculate new vectors from the center point, which is C and find their x,y,z using radius * sin and cos However, I'm really confused on the math part of this. I read about the dot product but that returns a scalar which I don't know how to apply in this case. Can someone point me into the right direction? [edit] To give a bit more info on the situation: I need to construct a buffer of floats, which -in groups of 3- describe vertex positions and will be connected by OpenGL ES, given another buffer with indices to form polygons. To give shape to the tube, I first created an array of floats, which -in groups of 3- describe control points in 3d space. Then along with a variable for segment density, I pass these control points to a function that uses these control points to create a CatmullRom spline and returns this in the form of another array of floats which -again in groups of 3- describe vertices of the catmull rom spline. On each of these vertices, I want to create a ring of vertices which also can differ in density (amount of smoothness / vertices per ring). All former vertices (control points and those that describe the catmull rom spline) are discarded. Only the vertices that form the tube rings will be passed to OpenGL, which in turn will connect those to form the final tube. I am as far as being able to create the catmullrom spline, and create rings at the position of its vertices, however, they are all on a planars that are in the same angle, instead of following the splines path. [/edit] Thanks!

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• C# .net How we valiadate a xml with Multiple xml-schemas

  - by allen8374

  <SOAP-ENV:Envelope xmlns:SOAP-ENV="http://www.w3.org/2003/05/soap-envelope" xmlns:SOAP-ENC="http://www.w3.org/2003/05/soap-encoding" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:m0="http://www.MangoDSP.com/schema" xmlns:m1="http://www.onvif.org/ver10/schema"> <SOAP-ENV:Body> <m:CreateView xmlns:m="http://www.MangoDSP.com/mav/wsdl"> <m:View token=""> <m0:Name>View1</m0:Name> <m0:ProfileToken>AnalyticProfile1</m0:ProfileToken> <m0:IgnoreZone> <m0:Polygon> <m1:Point y="0.14159" x="0.12159"/> <m1:Point y="0.24159" x="0.34159"/> <m1:Point y="0.14359" x="0.94159"/> </m0:Polygon> </m0:IgnoreZone> <m0:SceneType>Outdoor</m0:SceneType> <m0:CustomParameters> <m0:CustomParameter> <m0:Name>ViewParam1</m0:Name> <m0:CustomParameterInt>0</m0:CustomParameterInt> </m0:CustomParameter> </m0:CustomParameters> <m0:SnapshotURI><!--This element is ignored for the create view request --> <m1:Uri>http://www.blabla.com</m1:Uri> <m1:InvalidAfterConnect>true</m1:InvalidAfterConnect> <m1:InvalidAfterReboot>true</m1:InvalidAfterReboot> <m1:Timeout>P1Y2M3DT10H30M</m1:Timeout> </m0:SnapshotURI> </m:View> </m:CreateView> </SOAP-ENV:Body> </SOAP-ENV:Envelope> xmlns:m="http://www.MangoDSP.com/mav/wsdl" as localfile:"ma.wsdl" xmlns:m0="http://www.MangoDSP.com/schema" as localfile:"MaTypes.xsd" how can i validate it.

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• Transparent PNG menu item backgrounds in IE6 with rollovers

  - by evh

  Hi I have been trying to do this for what feels like all my life I have a list menu with block display links, each link has a sliding doors png background image. I have used this javascript (http://www.ideashower.com/our_solutions/png-hover/) to implement the alphaimageloader fix for ie6 using a transparent gif. When I test it for the first time it works but if I click to a different page and then click back it doesn't work anymore - the menu completely disappears, I can get it to work again by duplicating the transparent gif and changing it's name, but again if I go to another page and then come back to it, it stops working and the menu dissappears. Is this a server caching issue or something like that. Any thoughts on this would be much appreciated! Thanks

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• Asp.net fileupload control postback problems

  - by Spooky2010

  using ASP.net, vs2008 C#. Im using a FileUpload control on a webform. The uploading of a file (ie PDF dcouments) to a server directory works ok. I have on the webform a "preview" button that the user can use to preview the PDF file after they have selected it via the Fileupload browse feature. I do this by if (this.FileUpload1.HasFile) { localURL = FileUpload1.PostedFile.FileName; // use this to preview file. Other methods are restricted by local security requirements Process.Start(localURL); } My problems is that after the button click Postback occurs the location of the selected file disappears from the textbox part of the Fileupload control. How can i keep this info there, so the user does not have to browse again and instead can just click upload to upload the file. Any help appreciated thanks

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• Having trouble with fadeIn and fadeOut in IE8 with jQuery

  - by TheDelChop

  Guys, Here is my site: http://www.dreamweddinggroup.com/redesign and I'm having a hell of a tough time figuring out why in gods name my fadeIn, fadeOut and corner() functions won't work in IE8. They were working for a time, but now they have broken and I can't for the life of me figure it out. Can anybody see anything that would cause the problem here? To see what I'm talking about, if you were to click on the "About Us" link at the bottom of the page, you should see the text fade in. Then if you were to click on "Why Dream Wedding Group", the "About Us" text should fade out, and when it fades back in, you would see the new text. Thank you, Joe

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• replace file with hardlink to another file atomically

  - by Ben Clifford

  I have two directory entries, a and b. Before, a and b point to different inodes. Afterwards, I want b to point to the same inode as a does. I want this to be safe - by which I mean if I fail somewhere, b either points to its original inode or the a inode. most especially I don't want to end up with b disappearing. mv is atomic when overwriting. ln appears to not work when the destination already exists. so it looks like i can say: ln a tmp mv tmp b which in case of failure will leave a 'tmp' file around, which is undesirable but not a disaster. Is there a better way to do this? (what I'm actually trying to do is replace files that have identical content with a single inode containing that content, shared between all directory entries)

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• How To find the location of any treeviewitem in silverlight

  - by user312772

  Hi I am new in silverlight 3. I want to find the location of any treeview Item . Although I applied this code GeneralTransform gt = ProjectTree.TransformToVisual(Application.Current.RootVisual as UIElement); Point offset = gt.Transform(new Point(0, 0)); double controlTop = offset.Y; double controlLeft = offset.X; Here Project tree is the root element of the treeview. This code is working But when I applied this for any child TreeViewelement of Treeview then an exception occurs "Value does not fall within the expected range." How to find the location of this child treeview element object

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