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Search found 4275 results on 171 pages for 'symbol capture'.

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• Save a camera photo with an overlayed image - iphone SDK

  - by user157733

  I think this should be simple but I am having some difficulty implementing it. I take a photo from the camera, the user can then move and scale it. They then choose "use" and they get a preview of their image. Now what I want to do is overlay an image on top of this preview image - which is also ok. But the part I am having difficulty is then I want to save the photo taken WITH the image that is over it into the library. I just have a UIView with my overlay image about the UIView where my camera photo is previewed. I guess I just need to take a screen capture of these? I don't want to loose resolution OR end up with my UI buttons etc in the final image. Any suggestions or links would be really useful. Thanks :-)

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• Sniffing LPT Traffic

  - by ArcherT

  I need to intercept LPT output traffic. After a couple of hours of research, I've come to understand that the only way to do this is by writing a kernel-mode driver, more precisely a "filter driver"...? I've downloaded the WDK, but the terminology and vast number of driver types is a little overwhelming. I'm basically trying to understand what kind of driver I should be writing; my target environment is Windows XP SP2 and 3 only. Some background info, if it matters: I have a bunch of legacy DOS apps that print to LPT1. I'd like to be able to capture this output and redirect this data (after GDI calls) to a modern USB (network) printer. Fortunately, the latter part of the problem's easy. I'm hoping someone could point me in the right direction. TIA.

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• Using clojure.contrib functions in slime REPL

  - by Tyler

  I want to use the functions in the clojure.contrib.trace namespace in slime at the REPL. How can I get slime to load them automatically? A related question, how can I add a specific namespace into a running repl? On the clojure.contrib API it describes usage like this: (ns my-namespace (:require clojure.contrib.trace)) But adding this to my code results in the file being unable to load with an "Unable to resolve symbol" error for any function from the trace package. I use leiningen 'lein swank' to start the ServerSocket and the project.clj file looks like this (defproject test-project "0.1.0" :description "Connect 4 Agent written in Clojure" :dependencies [[org.clojure/clojure "1.2.0-master-SNAPSHOT"] [org.clojure/clojure-contrib "1.2.0-SNAPSHOT"]] :dev-dependencies [[leiningen/lein-swank "1.2.0-SNAPSHOT"] [swank-clojure "1.2.0"]]) Everything seems up to date, i.e. 'lein deps' doesn't produce any changes. So what's up?

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• Powershell 2.0 error handling - Command line call vs. ISE

  - by Gromix

  Hi, In the context of deployment scripts, I would like to capture any error than happens and stop immediately. I have notice some significant differences between the following calls: powershell.exe -File Script.ps1 powershell.exe -Command "& '.\Script.ps1'" powershell.exe .\Script.ps1 For example, the -File call will handle errors in the exact same way as the ISE. The other two seem to ignore the $ErrorActionPreference variable, and do not seem to catch Write-Error in try/catch blocks. Could someone help me understand the implications of each one, and why they are behaving differently? Thanks, Romain

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• Link error (LNK2019) when including other projects in Visual Studio 2005

  - by jules

  I am trying to work with several projects on visual studio 2005. I have one project that depends on two others. I have included those two project in the first project solution, and set the dependencies correctly. I get this error when linking the project: 1>server_controller.obj : error LNK2019: unresolved external symbol "public: __thiscall server_communication::TcpServer::TcpServer(class boost::asio::io_service &,struct server_communication::ServerParameters &)" (??0TcpServer@server_communication@@QAE@AAVio_service@asio@boost@@AAUServerParameters@1@@Z) referenced in function "public: __thiscall server_controller::ServerController::ServerController(class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >,class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >)" (??0ServerController@server_controller@@QAE@V?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@0@Z) I seems that the symbols can not be found in the other projects, even though there are defined in those projects.

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• Universal iPhone/iPad Windows-based app with Core Data crashes on iPhone SDK 4 beta 3

  - by Tarfa

  Hi all. I installed iPhone OS 4.0 Beta 3. When I create a new Windows-based universal app with Core Data (File New Project Windows-based Application --- select Universal in drop down and check the "Use Core Data for storage" check box) the app launches fine into the iPhone simulator but crashes in the iPad simulator. The console message returned is: dyld: Symbol not found: _OBJC_CLASS_$_NSURL Referenced from: /Users/tarfa/Library/Application Support/iPhone Simulator/3.2/Applications/5BB644DC-9370-4894-8884-BAEBA64D9ED0/Universal.app/Universal Expected in: /Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator3.2.sdk/System/Library/Frameworks/CoreFoundation.framework/CoreFoundation I'm stumped. Anyone else experiencing this problem?

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• How to have onSearchRequested not open a web browser.

  - by pcm2a

  I have a button in my app. When it is pressed I call the onSearchRequested() method. When this is called the stock search box comes up so the user can type some junk in there. When they press "Go" I need the results returned back to my application but instead the stock browser is opened and a google search is performed. How can I tell it to return the results to my application instead. I've tried these items in my manifest.xml file: <meta-data android:name="android.app.default_searchable" android:value=".MainActivity" /> <activity android:name=".MainActivity" android:launchMode="singleTop" <intent-filter> <action android:name="android.intent.action.SEARCH" /> </intent-filter> I've also tried to capture the result in my onCreate with this: Intent intent = getIntent(); if (Intent.ACTION_SEARCH.equals(intent.getAction()))

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• XCode Developer Documentation crashes after clicking any link on the startup screen

  - by Noah Sussman

  I just installed XCode 3.2.1. When I open the Developer Documentation and click any link on the startup screen, XCode crashes. Has anyone run into this problem? Also hints as to how to debug would be excellent -- I've only been using XCode for a week. I can still get into the documentation if I open some code and then right-click a symbol and choose "Find in Documentation." But its annoying that I can't just open the docs and browse them.

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• Creating a Box Control over an area of the map with OpenLayers

  - by Bernie Perez

  I am using OpenLayers to create a box of interest with my program. I am using this code: var control = new OpenLayers.Control(); OpenLayers.Util.extend(control, { draw: function () { this.box = new OpenLayers.Handler.Box( control, {"done": this.notice}, {keyMask: OpenLayers.Handler.MOD_SHIFT}); this.box.activate(); }, notice: function (bounds) { areaSelected(bounds); } }); map.addControl(control); to capture the "Shift Create a Box" control and use the area selected as my area of interest. However the values come back as pixels. But I want Longitude and Latitude, not pixels. The Mouse Position control does show the correct long & lat. I really don't care how to box is created, I just want an easy way for the user to select a area of the map and I need to get the lat & longs of the area. (Box, Circle, doesn't matter)

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• Create a thumbnail of a dwg in in a linux envrionment

  - by Kyle

  Creating a ruby on rails site that uses RMagick to create thumbnails for many types of images. RMagick cannot read dwg files however. I've tried a few things, looked into the Java library JDWGLib, which would probably allow me to write a converter, but it would be a total from the ground up solution, where I just need a thumbnail. Also considered using a viewer program to open the file in a remote X session and do a screen capture, however I'm not sure how I could ever guarantee that the viewer had completed opening when I took the screenshot. I'm not concerned with being able to manipulate the file other than to create the thumbnail. It is going to be used for commercial purposes, so any libraries used need to be compatible.

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• I need to know what link is clicked, how do i get these variables with cherrypy?

  - by user291071

  Lets say I display 3 links, I want to accomplish 2 things, know which link is clicked, and record this choice in a list/pickle or txt file but also capture this variable in cherrypy so I can perform another action. How do I do this? Its been suggested that I use a query string which makes sense but I can't get the querystring variable to cherrypy to use for further actions. So would anyone have a simple code of cherrypy with lets say 2 pages and have one page display 2 links with a querystring in each and the second page able to get that value?

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• Building two executables in one project

  - by Rui Pacheco

  Hi, I've a project that must produce two executables: the main application and an executable that is called by a separate process. I've created the second file in Xcode and added a second target of type Cocoa Shell Tool. I can now build the second executable but when I try to build my project normally I get an error saying there's two executables present: ld: duplicate symbol _main in <path>/SecondExecutable.o and <path>/main.o (<path> was added by me to protect the innocent and their intelectual property). How can I configure Xcode to build both at the same time?

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• What happens with TCP packets between two Socket.BeginReceive calls?

  - by Rodrigo

  I have a doubt about socket programming. I am developing a TCP packet sniffer. I am using Socket.BeginAccept, Socket.BeginReceive to capture every packet, but when a packet is received I have to process something. It is a fast operation, but would take some milliseconds, and then call BeginReceive again. My question is, what would happen if some packets are sent while I am processing, and haven't called BeginReceive? Are packets lost, or are they buffered internally? Is there a limit?

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• How to differentiate between scrollbar click events and scrollbar drag events?

  - by Sameer

  I need to scroll an EXT-GWT grid by some custom amount instead of the default 1-2 rows. Since I couldn't find any parameter that let me do this, I overrode the event handler to capture scroll or mousewheel events. On any such event, I just programmatically move the scroller further by the required amount in the same direction, keeping a flag to ensure that it doesn't go into an infinite loop. However, this technique fails when the user scrolls the grid with the scroller. Specifically, when I drag the scroller from some position to the top of the scroll track, the rows displayed in the grid are not the topmost rows in the grid but some rows further down. I figured that if I could differentiate between the events generated by the scroll-up and scroll-down buttons and those generated by scroller drag, I could handle them separately and rectify the issue. Any way this could be done? Or is there a way to specify the amount by which a scrollbar should scroll in one step? Thanks -Sameer

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• Ruby: How to loop through an object that may or may not be an array?

  - by Shpigford

  I have an each method that is run on some user-submitted data. Sometimes it will be an array, other times it won't be. Example submission: <numbers> <number>12345</number> </numbers> Another example: <numbers> <number>12345</number> <number>09876</number> </numbers> I have been trying to do an each do on that, but when there is only one number I get a TypeError (Symbol as array index) error.

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• SQL Get Top 10 records by date

  - by Pselus

  I have a table full of bugs. The BugTitle is the page erroring and I also capture the error line. I would like to build an SQL Query that selects the top 10 bugs based on bugtitle and error line. I have this query: SELECT COUNT(BugTitle) AS BugCount, BugTitle, ErrLine FROM Bugs WHERE BugDate >= DateAdd(Day, -30, DateDiff(Day, 0, GetDate())) GROUP BY BugTitle, ErrLine ORDER BY BugCount, ErrLine DESC But I'm not sure if it's correct. I'm pretty sure that my test data only has 1 bug that happens on the same line but that's not showing up with this query. Can anyone help?

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• How to make a loop over all keys of a HashMap?

  - by Roman

  I try to do it in the following way: public String getValue(String service, String parameter) { String inputKey = service + ":" + parameter; Set keys = name2value.keySet(); Iterator itr = keys.iterator(); while (itr.hasNext()) { if (inputKey.equal(itr.next())) { return name2value.get(inputKey); } return ""; } } And I get an error message: cannot find symbol method.equal(java.lang.Object). I think it is because itr.next() is not considered as a string. How can I solve this problem? I tried to replace Set keys by Set<String> keys. It did not help.

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• What is the C# equivalent of java.util.regex?

  - by peter.murray.rust

  I am converting Java code to C# and need to replace the use of Java's regex. A typical use is import java.util.regex.Matcher; import java.util.regex.Pattern; //... String myString = "B12"; Pattern pattern = Pattern.compile("[A-Za-z](\\d+)"); Matcher matcher = Pattern.matcher(myString); String serial = (matcher.matches()) ? matcher.group(1) : null; which should extract a capture group from a matched target string. I'd be grateful for simple examples. EDIT: I have now added the C# equivalent of the code as an answer. EDIT: Here is a tutorial on the use of the actual expressions. EDIT: Here is a useful comparison of C# and Java (and Perl.)

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• Winforms panel event after scroll

  - by Charlie boy

  Hello I have a panel in wich I do a bounch af rater complex drawing in the paint event. Since the drawing-code is kind of heavy, it gets rather twitchy when I scroll the panel, since the paint event is raised in such short intervals. My question is really this; Can i capture evnts such as "on scroll start" and "on scroll end" on a winforms control? If so, I could then just pause the drawing-code until the scroll is complete. Thanks in advance!

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• Double encoded url being fully decoded in ASP.NET

  - by Brad R

  I have just come across something that is quite strange and yet I haven't found any mention on the interwebs of others having the same problem. If I hit my ASP.NET application with a double encoded url then the Request["myQueryParam"] will do a double decode of the query for me. This is not desirable as I have double encoded my query string for a good reason. Can others confirm I'm not doing something obviously wrong, and why this would happen. A solution to prevent it, without doing some nasty query string parsing, would be great too! As an example if you hit the url: http://localhost/MyApp?originalUrl=http%3a%2f%2flocalhost%2fAction%2fRedirect%3fUrl%3d%252fsomeUrl%253futm_medium%253dabc%2526utm_source%253dabc%2526utm_campaign%253dabc (For reference %25 is the % symbol) Then look at the Request["originalUrl"] (page or controller) the string returned is: http://localhost/Action/Redirect?Url=/someUrl?utm_medium=abc&utm_source=abc&utm_campaign=abc I would expect: http://localhost/Action/Redirect?Url=%2fsomeUrl%3futm_medium%3dabc%26utm_source%3dabc%26utm_campaign%3dabc I have also checked in Fiddler and the URL is being passed to the server correctly (one possible culprit could have been the browser decoding the URL before sending).

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• Which Win32 API reports the Format preference in the Region and Language control panel?

  - by Integer Poet

  Windows 7 and Windows Vista have a Region and Language control panel which contains a Formats tab which contains a popup menu titled Format. This menu allows the user to select from among many language-oriented sets of number, currency, time, and date formatting preferences regardless of the language of the base system. For example, I could decide I prefer the default currency symbol to be Japanese yen on a US English system. The Windows Contacts application changes its behavior depending on these format preferences. For example, if I select Japanese formatting preferences, Windows Contacts displays and lets me edit phonetic names (AKA "ruby", "yomi", and "furigana") but not middle names. If I select US English formatting preferences, Windows Contacts displays and lets me edit middle names but not phonetic names. I need to write code (native C calling Win32) which mirrors the behavior of the Windows Contacts application in this respect. Which API should I call?

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• Problem creating PostGIS template database

  - by omat

  I am trying to build a template geographic database for PostGIS (1.5) on Mac OS X Snow Leopard (10.6) for my GeoDjango application. I am following: http://docs.djangoproject.com/en/dev/ref/contrib/gis/install/#creating-a-spatial-database-template-for-postgis I've managed to come up to the point where the provided postgis.sql should be run (i.e. psql -d template_postgis -f $POSTGIS_SQL_PATH/postgis.sql) At that point I am getting an error at the first SQL statement that is tried to be run. When I try that on the psql prompt the result is as follows: template_postgis=# CREATE OR REPLACE FUNCTION st_spheroid_in(cstring) RETURNS spheroid AS '/usr/local/pgsql/lib/postgis-1.5','ellipsoid_in' LANGUAGE 'C' IMMUTABLE STRICT; NOTICE: type "spheroid" is not yet defined DETAIL: Creating a shell type definition. ERROR: could not load library "/usr/local/pgsql/lib/postgis-1.5.so": dlopen(/usr/local/pgsql/lib/postgis-1.5.so, 10): Symbol not found: _DatumGetFloat4 Referenced from: /usr/local/pgsql/lib/postgis-1.5.so Expected in: /opt/local/lib/postgresql83/bin/postgres in /usr/local/pgsql/lib/postgis1.5.so Any ideas what might have been messed up?

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• Accurate Timings with Oscilloscopes on PC

  - by Paul Bullough

  In the world of embedded software (firmware) it is fairly common to observe the order of events, take timings and optimise a program by getting it to waggle PIO lines and capturing their behavior on an oscilloscope. In days gone by it was possible to toggle pins on the serial and parallel ports to achieve much the same thing on PC-based software. This made it possible to capture host PC-based software events and firmware events on the same trace and examine host software/firmware interactions. Now, my new laptop ... no serial or parallel ports! This is increasingly the case. So, does anyone have any suggestions as to go about emitting accurate timing signals off a "modern" PC? It strikes me that we don't have any immediately programmable, lag-free output pins left. The solution needs to run off a laptop, so using add-on cards that only plug into desktops are not permitted.

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• Twitter - Get users live tweets on my website instantly

  - by Gublooo

  Hello guys, I was checking out the stocktwits.com website. While signing up I provided them with my twitter username. Now whenever I tweet and if my tweet contains $ and a stock ticker symbol - it instantly appears on Stocktwits.com I am interested in implementing something similar in my website. Just wanted an understanding of how this would work. This is how I'm assuming it would work at a high level: 1) On my website - require users to provide their twitter usernames 2) Run a cron job every few minutes to pull the latest tweets for each of the usernames provided using something like http://twitter.com/statuses/user_timeline/username.xml I've tried Stocktwits and they updates are almost instantaneous - so it does not appear like they are checking for updates every few minutes. What are the best ways to implement this solution Thanks

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• How can I play video by touching the button on the video thumnail of the video in tableviewcell ?

  - by srikanth rongali

  I have a table view in which if each cell is touched video plays. Each cell have image of the video cell.imageView.image. And on the image I have a button (UIButton) with play symbol. If I touch the play button the corresponding video should be played same like the when cell is touched. I have a selector for the play button. But I need (NSIndex*)indexPath to get the current row. But I can't access the indexPath in my selector. How can I make this? Thank You.

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