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  • Displaying Video using a Window Handle

    - by fergs
    I'm working on a C# wrapper for Dallmeier camera's and currently have a working wrapper. I can connect to a camera via passing the window handle (in my application its a picture box handle), this is used to send video and messages. Once connected I can then send the StartLiveView command and then a live stream video will be shown in the picture box. Can someone explain how this works by just giving the window handle? And how can I grab an Image from this stream when Picturebox1.Image is null?

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  • jQuery lava-lamp-like effect bouncing all over the place!

    - by Nathan Loding
    I followed the tutorial found here and added my own flare to it: tutorial What I was looking to accomplish was to put a specific image on the left and right side of the list item. So instead of just the generic <li id="blob"></li> created in the tutorial, I did <li id="blob"><div class="blob-wrap"><div class="leftimage"></div><div class="rightimage"></div></li> to accomplish the particular effect I wanted. It works beautifully ... except that the image attempts to bounce back the "currentPageItem" if I leave the mouse hovering over one of the list items. Here's a JS Bin example: http://jsbin.com/odome What do I need to do to fix it? jQuery is firing the "hoverOut" function (or whatever you want to call it). But why?

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  • Creating properly aligned partitions on a replacement disk

    - by Marius Gedminas
    I've a typical small office server with two hard disks configured for RAID-1 (mirroring). Each disk has several partitions: one for swap, the others paired in several /dev/mdX arrays. Every couple of years one of the disks dies and is replaced. The replacement typically goes something like this: # copy partition table from the remaining good disk to the empty replacement disk # (instead of /dev/good_disk and /dev/new_disk I use /dev/sda and /dev/sdb, as appropriate) sfdisk -d /dev/good_disk | sfdisk /dev/new_disk # install boot loader grub-install /dev/new_disk # create swap partition reusing the same UUID, so I don't need to edit /etc/fstab mkswap /dev/new_disk1 -U xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx # hot-add the new partitions to my RAID arrays mdadm /dev/md0 -a /dev/new_disk2 mdadm /dev/md1 -a /dev/new_disk5 mdadm /dev/md2 -a /dev/new_disk6 mdadm /dev/md3 -a /dev/new_disk7 mdadm /dev/md4 -a /dev/new_disk8 The disks were originally partitioned with cfdisk back in 2009, and so the partition table is aligned traditionally to cylinder boundaries (255 heads * 63 sectors). This is not the optimum configuration for new 4K-sector drives. My question is: how can I create a set of partitions for the new disk and ensure they're properly aligned, and have correct sizes for my RAID arrays (rounding up is acceptable, I suppose, but rounding down is definitely not)?

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  • Simple .NET webcam library

    - by Vegard Larsen
    Is there a simple library for .NET that has a simply API that let's you do something like; // pseudo-code List<Webcam> cams = Webcam.GetAll(); Image i = cams[0].GrabImage(); I've looked at DirectShow and WIA, both seem to be much more complicated than this. I've also looked at this CodeProject project, but it really is much more complicated than what I need. The library should support image grabbing and video grabbing, and preferably live streaming of video. Edit: It is preferable if it is free (or at least very cheap), as this is a hobby project.

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  • as3 loops and event listeners

    - by Ross
    I have an array that returns multidimensional data from an mysql database, when this is collected the createNews function creates the user interface. The problem I am having is the loop is iterating quicker than the ui is being created, is there a way to use event listeners with loops so it only continues after my function has completed its work. Any solutions or ideas are much appreciated; Thanks, R. var t:Array = responds.serverInfo.initialData; for (var i:uint = 0; i < t.length; i++) { var date = t[i][1]; var newstitle = t[i][2]; var story= t[i][3]; var image = t[i][4]; createNews(date, newstitle, story, image); }

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  • What are Windows code pages?

    - by Mike D
    I'm trying to gain a basic understanding of what is meant by a Windows code page. I kind of get the feeling it's a translation between a given 8 bit value and some 'abstraction' for a given character graphic. I made the following experiment. I created a "" character literal with two versions of the letter u with an umlaut. One created using the ALT 129 (uses code page 437) value and one using the ALT 0252 (uses code page 1252) value. When I examined the literal both characters had the value 252. Is 252 the universal 8 bit abstraction for u with an umlaut? Is it the Unicode value? Aside from keyboard input are there any library routines or system calls that use code pages? For example is there a function to translate a string using a given code table (as above for the ALT 129 value)?

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  • Metric 3d reconstruction

    - by srand
    I'm trying to reconstruct 3D points from 2D image correspondences. My camera is calibrated. The test images are of a checkered cube and correspondences are hand picked. Radial distortion is removed. After triangulation the construction seems to be wrong however. The X and Y values seem to be correct, but the Z values are about the same and do not differentiate along the cube. The 3D points look like as if the points were flattened along the Z-axis. What is going wrong in the Z values? Do the points need to be normalized or changed from image coordinates at any point, say before the fundamental matrix is computed? (If this is too vague I can explain my general process or elaborate on parts)

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  • Evolution of an Application: how to manage and improve core engine?

    - by Phil Carter
    The web application I work on has been live for a year now, but it's time for it to evolve and one of the ways in which it is evolving is into a multi-brand application - in this case several different companies using the application, different templates/content and some slight business logic changes between them. The problem I'm facing is implementing a best practice across the site where there are differences in business logic for each brand. These will mostly be very superficial, using a an alternative mailing list provider or capturing some extra data in a form. I don't want to have if(brand === x) { ... } else { ... } all over the site especially as most of what needs to be changed can be handled with extending the existing class. I've thought of several methods that could be used to instantiate the correct class, but I'm just not sure which is going to be best especially as some seem to lead to duplication of more code than should be necessary. Here's what I've considered: 1) Use a Static Loader similar to Zend_Loader which can take the class being requested, and has knowledge of the Brand and can then return the correct object. $class = App_Loader::getObject('User', $brand); 2) Factory classes. We use these in the application already for Products but we could utilise them here also to provide a transparent interface to the class. 3) Routing the page request to a specific brand controller. This however seems like it would duplicate a lot of code/logic. Is there a pattern or something else I should be considering to solve this problem? 4) How to manage a growing project that has multiple custom instances in production? Update This is a PHP application so the decisions on which class to load are made per request. There could be upwards of 100+ different 'brands' running.

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  • Use native HBitmap in C# while preserving alpha channel/transparency. Please check this code, it works on my computer...

    - by David
    Let's say I get a HBITMAP object/handle from a native Windows function. I can convert it to a managed bitmap using Bitmap.FromHbitmap(nativeHBitmap), but if the native image has transparency information (alpha channel), it is lost by this conversion. There are a few questions on Stack Overflow regarding this issue. Using information from the first answer of this question (How to draw ARGB bitmap using GDI+?), I wrote a piece of code that I've tried and it works. It basically gets the native HBitmap width, height and the pointer to the location of the pixel data using GetObject and the BITMAP structure, and then calls the managed Bitmap constructor: Bitmap managedBitmap = new Bitmap(bitmapStruct.bmWidth, bitmapStruct.bmHeight, bitmapStruct.bmWidth * 4, PixelFormat.Format32bppArgb, bitmapStruct.bmBits); As I understand (please correct me if I'm wrong), this does not copy the actual pixel data from the native HBitmap to the managed bitmap, it simply points the managed bitmap to the pixel data from the native HBitmap. And I don't draw the bitmap here on another Graphics (DC) or on another bitmap, to avoid unnecessary memory copying, especially for large bitmaps. I can simply assign this bitmap to a PictureBox control or the the Form BackgroundImage property. And it works, the bitmap is displayed correctly, using transparency. When I no longer use the bitmap, I make sure the BackgroundImage property is no longer pointing to the bitmap, and I dispose both the managed bitmap and the native HBitmap. The Question: Can you tell me if this reasoning and code seems correct. I hope I will not get some unexpected behaviors or errors. And I hope I'm freeing all the memory and objects correctly. private void Example() { IntPtr nativeHBitmap = IntPtr.Zero; /* Get the native HBitmap object from a Windows function here */ // Create the BITMAP structure and get info from our nativeHBitmap NativeMethods.BITMAP bitmapStruct = new NativeMethods.BITMAP(); NativeMethods.GetObjectBitmap(nativeHBitmap, Marshal.SizeOf(bitmapStruct), ref bitmapStruct); // Create the managed bitmap using the pointer to the pixel data of the native HBitmap Bitmap managedBitmap = new Bitmap( bitmapStruct.bmWidth, bitmapStruct.bmHeight, bitmapStruct.bmWidth * 4, PixelFormat.Format32bppArgb, bitmapStruct.bmBits); // Show the bitmap this.BackgroundImage = managedBitmap; /* Run the program, use the image */ MessageBox.Show("running..."); // When the image is no longer needed, dispose both the managed Bitmap object and the native HBitmap this.BackgroundImage = null; managedBitmap.Dispose(); NativeMethods.DeleteObject(nativeHBitmap); } internal static class NativeMethods { [StructLayout(LayoutKind.Sequential)] public struct BITMAP { public int bmType; public int bmWidth; public int bmHeight; public int bmWidthBytes; public ushort bmPlanes; public ushort bmBitsPixel; public IntPtr bmBits; } [DllImport("gdi32", CharSet = CharSet.Auto, EntryPoint = "GetObject")] public static extern int GetObjectBitmap(IntPtr hObject, int nCount, ref BITMAP lpObject); [DllImport("gdi32.dll")] internal static extern bool DeleteObject(IntPtr hObject); }

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  • layout problam in android

    - by mahdi
    Hi i try show layout like image 1 (textView and editText in same line) but my out put shown like image 2 ! i try with this code : <?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="wrap_content" android:padding="5px" > <TextView android:id="@+id/label" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="URL:" android:layout_alignBaseline="@+id/entry" android:layout_alignParentLeft="true"/> /> <EditText android:id="@+id/entry" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_toRightOf="@id/label" android:layout_alignParentTop="true" /> <Button android:id="@+id/button" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="center_horizontal" android:paddingRight="30px" android:paddingLeft="30px" android:text="Go..." /> </LinearLayout> please help me thanks

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  • links for 2010-12-15

    - by Bob Rhubart
    Pravin Janardanam: Security in OBIEE 11g, Part 1 Guest blogger Pravin Janardanam kicks off a two-part series in which he tackles the differences in security between OBIEE 11g and 10g, and provides some hints on security migration from a 10g environment. (tags: oracle otn businessintelligence obiee) HttpClusterServlet Configuration (Weblogic Server Acting as a Proxy) Quick tips from Divay Dureja. (tags: oracle weblogic servlet configuration) Accelerating Deployment of Virtualized Infrastructures with the Oracle VM Blade Cluster Reference Configuration "The Oracle VM blade cluster reference configuration is a single-vendor solution that addresses every layer of the virtualization stack with Oracle hardware and software components." - from the white paper. (tags: oracle otn oraclevm virtualization) A SOA Safari (Antony Reynolds' Blog) SOA author Antony Reynolds shares links to some of his favorite SOA titles available for reading on Safari. (tags: oracle otn soa) Using Crossbow and Solaris 11 Express Zones for a single machine proof of concept environment with Puppet "My last blog entry was about my debugging experience with Puppet and promise to share the setup that I used. I now follow up that previous entry with this one which describes my Crossbow + NAT + S11 Zones proof of concept." - Michael Tin (tags: oracle solaris crossbow) @myfear: One thing you did not know about Java EE class loading in GlassFish 2.x "Be careful migrating apps from one app server to the other. And don't expect to have a strong hierarchical class loader in place. That is especially true for GF 2.x class loading." Oracle ACE Director Markus Eisele (tags: oracle otn oracleace java glassfish weblogic)

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  • Activerecord-PostgreSQL Adapter Error

    - by Tian
    When running "rake db:migrate", i receive the following error: Please install the postgresql adapter: gem install activerecord-postgresql-adapter (dlopen(/Library/Ruby/Gems/1.8/gems/pg-0.9.0/lib/pg_ext.bundle, 9): no suitable image found. Did find: /Library/Ruby/Gems/1.8/gems/pg-0.9.0/lib/pg_ext.bundle: mach-o, but wrong architecture - /Library/Ruby/Gems/1.8/gems/pg-0.9.0/lib/pg_ext.bundle) Postgres 8.4.4 installed using the pre-built image file. Then ran sudo gem install pg to install pg-0.9.0 Config/database.yml: development: adapter: postgresql Does anyone know what the problem is?

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  • Why does 6.times.map work in ruby 1.8.7 but not 1.8.6

    - by Lee
    The following code snippet works fine in 1.8.7 on Mac OS X, but not in 1.8.6 on Ubuntu. Why? Is there a workaround? Works in 1.8.7: $ ruby --version ruby 1.8.7 (2009-06-08 patchlevel 173) [universal-darwin10.0] ltredgate15:eegl leem$ irb >> 6.times.map {'foo'} => ["foo", "foo", "foo", "foo", "foo", "foo"] >> But not in 1.8.6: # ruby --version ruby 1.8.6 (2008-08-11 patchlevel 287) [i686-linux] Ruby Enterprise Edition 20090610 # irb irb(main):001:0> 6.times.map {'foo'} LocalJumpError: no block given from (irb):1:in `times' from (irb):1 irb(main):002:0> Why is there a difference? What's the workaround for 1.8.6?

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  • Setting outbound 'Expires:' in Squid server's HTTP header

    - by IkeaPimp
    I'm having a problem where items served by my Squid server are being cached by Limelight for too long, sometimes days. It happens when a piece of content has been static for a long time (weeks) and then undergoes numerous changes in a matter of hours. Limelight gets its content from our Squid server and I'm told that if I can add 'Expires: 15m' in the HTTP header the Squid server sends, Limelight will not cache the image for more than 15 min. Unfortunately, I can fond no setting in Squid that will allow me to add this to the header. Here's the HTTP header as presently being sent: HTTP/1.0 200 OK Date: Tue, 15 Dec 2009 23:57:33 GMT Server: nginx/0.5.26 Content-Type: image/jpeg Content-Length: 83843 Last-Modified: Tue, 15 Dec 2009 23:52:00 GMT Accept-Ranges: bytes Age: 450 X-Cache: HIT from squid01.prod.mydomain X-Cache-Lookup: HIT from squid01.prod.mydomain:3128 Via: 1.0 squid01.prod.mydomain:3128 (squid/2.6.STABLE14) Connection: close

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  • How to recognize touch events and control a script object inside UIWebView?

    - by Markus S.
    Situation: I have an UIView with an UIWebView in it. When the viewDidLoad the Javascript Object inside the UIWebView is called (Microsoft Seadragon AJAX JS). For your Understanding: Seadragon loads a specified megapixel image(JPEG) and in a Desktop Browser like Firefox i can Zoom into the image and I can drag the crop for example from the middle to the left. In the iPhone Simulator (for iPad) only the Zooming Function is working on one single tap but when i try to drag the crop (with left mouse button click and holding it) I'm dragging the whole UIWebView but not the crop of course! Is that feature which the simulator isn't able to handle or what's yout solutin guys? Special Thanks!! P.S.: It's a bit jiggling when the zooming function of Seadragon is called. Is that authentic to the real performance of the iPad or does the simulator not have the power as the iPad has?

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  • Rotate a feature programatically Open Layers

    - by Ozaki
    TLDR I want to rotate a Feature in my open layers. I want it to face a certain heading that I am receiving from server. I know that you can make a feature spin on a point or so on: window.setInterval(function() {rotateFeature( pointFeature, 360 / 20, origin)}, 100); as from the open layers example. But I want to be able to face it towards a heading I am given, so. Can I face a feature towards a heading? Can I face a feature(image) in the same way? If not is it possible to automatically calculate the rotation required and position it that way? Or any ideas on how I could do this with the image? (hoping not to have 360 images) Thanks in advance.

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  • How to get jQuery draggable elements scroll with mb.imageNavigator

    - by bulltorious
    I am using jQuery mb.imageNavigator (1.8) from http://pupunzi.open-lab.com/mb-jquery-components/mb-imagenavigator/ to implements a Risk type game adjucation system. Using the imageNavigator plugin I am able to scroll around a large game map of the world. My issue is when I declare some elements as draggable and drag them onto the map image, their location does not stay relative to where in the picture I put them. They just stay fixed on the screen no matter where I scroll. Does anyone know how to make the the draggable elements scroll with the image? Matteo posts about "you can add an additional content layer that overlay image and moves with it" and posts an example, but I can't make it work. <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> ` <head> <script type="text/jscript" src="lib/jquery/jquery-1.3.2.js"> </script> <script type="text/jscript" src="lib/jquery/jquery-ui-1.7.2.custom.min.js"> </script> <script type="text/jscript" src="lib/utilities/mbImgNav.min.js_0.js"> </script> <script type="text/jscript" src="lib/utilities/start.js"> </script> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>New Web Project</title> </head> <body> <div id="AdamsAshTray" style="float:right; background-color:red; z-index:999"> test test test </div> <div id="navArea"> <div imageUrl="someimage" navPosition="BR" navWidth="100" style="display:none;" class="imagesContainer"> <span class="title">zuccheriera</span> <div class="description"> <STRONG>description1</STRONG> </div> </div> </div> </body> $(document).ready(function(){ $("#navArea").imageNavigator({ areaWidth:1820, areaHeight:1000, draggerStyle: "1px dotted red", navOpacity: .8 }) $("#AdamsAshTray").draggable({ grid: [20,20] }); })`

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  • In WPF how to define a Data template in case of enum?

    - by Ashish Ashu
    I have a Enum defined as Type public Enum Type { OneType, TwoType, ThreeType }; Now I bind Type to a drop down Ribbon Control Drop Down Menu in a Ribbon Control that displays each menu with a MenuName with corresponding Image. ( I am using Syncfusion Ribbon Control ). I want that each enum type like ( OneType ) has data template defined that has Name of the menu and corrospending image. How can I define the data template of enum ? Please suggest me the solution, if this is possible !! Please also tell me if its not possible or I am thinking in the wrong direction !!

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  • Cocos2D SpriteSheet animation problem, my number of frames is much larger.

    - by vaibhav-tekam
    Hello, I am trying to use SpriteSheet to run an animation. My frames are of 320x480 in size each, So I am able to put max 6 frames on the texture image. But my animation consists of frame number ranging from 50 to 200 sometimes, and all are of size 320x480. But this much number of frames cannot be added on the Texture image as the size is restricted to 1024x1024. Is there any other approach I can try out. Can I play one animation after the other.And won't it be hampering the performance. Please, I need suggestions. Best, Vaibhav Tekam.

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  • CSS for https urls

    - by Vincent
    Hello, looking for some help with images referenced within the stylesheet. I have no problems with these from non secure locations within the site but only from https. The stylesheet loads fine and displays everything correctly except for the images. example: body { margin: 0; padding: 0; background: url(/img/background_tile.gif) top left repeat-x; text-align: center; background-color: #fff; } All my css files and other image paths inside the code use relative urls to images. How can I make sure they all work fine without hard coding my image paths with https or http? I want the code to work fine with http and https. Thanks

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  • RewriteCond and Alias

    - by Ralphz
    I have defined alias that looks like this: Alias /pictures/sm/ /var/www/my_site/data/_active_thumbnails/ Later in the VirtualHost section have: DocumentRoot /var/www/my_site/sites/www.my_site.com/htdocs RewriteCond %{REQUEST_FILENAME} !-f RewriteRule ^/thumbnails/(.*)\.(jpg|JPG) /images/stg-list-img.png [PT,L] What I'm trying to do is to display /images/stg-list-img.png placeholder image only if the original image does not exist on the drive. Right now it's replacing all the images from /thumbnails/. It looks like the RewriteCond is not aware about the Alias. Is there the way to overcome it? Thanks

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  • jQuery trigger mouseover function when page loads with the mouse over the element

    - by Gal V
    Hello all, I have an ASP.NET document, with an Image element within it. I created a mouseover function on this image element and it's working fine. The question is: If the mouse is ALREADY over the element when the document loads itself, the mouseover function doesn't trigger (I need to mouseout and then mouseover again in order to trigger it). Is there any way to check in the $(document).ready function if the mouse is already on top of this element? and if yes- trigger the mouseover function. Thanks all!

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  • iPad UIViewController loads as portrait when device is in landscape

    - by jud
    I have an application with 3 view controllers. They are all have shouldAutoRotateToInterfaceOrientation returning YES. The first two, my main menu and my submenu both autorotate just fine. The third viewcontroller, which programatically loads a UIImageView from a jpg file in the program's bundle, will only display in portrait. In the viewcontroller containing the image, i have this: NSString *imageName = [NSString stringWithFormat:@"%@-00%d.jpg",setPrefix,imageNumber]; UIImageView *pictureView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:imageName]]; pictureView.frame = CGRectMake(0, 0, 1024, 768); [self.view addSubview:pictureView]; and again, I have shouldAutoRotateToInterfaceOrientation returning YES for all orientations. My image shows up, but is sideways, and the 0,0,1024,768 values I used to make my rectangle start from the top right corner going down, instead of starting at the top left and going across (holding in landscape). Am I missing a parameter I need to set in order to ensure the imageview shows up in landscape instead of portrait?

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  • Regex to match 2 things in 1 HTML file

    - by CyberK
    Hi, I have a HTML file which contains the following: <img src="MATCH1" bla="blabla"> <something:else bla="blabla" bla="bla"><something:else2 something="something"> <something image="MATCH2" bla="abc"> Now I need a regex to match both MATCH1 and MATCH2 Also the HTML contains multiple parts like this, so it can be in the HTML 1, 2, 3 of x times.. When I say: <img\s*src="(.*?)".*?<something\s*image="(.*?)" It doesn't match it. What am I missing here? Thanks in advance!

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