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• Resizing JPEG image during decoding

  - by Thomas

  I'm working on a program that creates thumbnails of JPEG images on the fly. Now I was thinking: since a JPEG image is built from 8x8-pixel blocks (Wikipedia has a great explanation), would it be possible to skip part of the decoding? Let's say that my thumbnails are at least 8 times smaller than the original image. We could then map each 8x8 block in the input file to 1 pixel in the decoding output, by including only the constant term of the discrete cosine transform. Most of the image data can be discarded right away, and need not be processed. Moreover, the memory usage is reduced by a factor of 64. I don't want to implement this from scratch; that'll easily take a week. Is there any code out there that can do this? If not, is this because this approach isn't worthwhile, or simply because nobody has thought of it yet?

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• C#/.Net: What are the best practices for setting ResXResourceReader's basepath?

  - by raj.tiwari

  I am working on a Windows Forms application in C#/.Net. I want to use a resource file that contains translations of my strings. My my project in visual studio I have the following hierarchy: Project CS files ... Resources\ resource.en-US.resx I am trying to read in the resource file as follows: m_ResourceReader = new ResXResourceReader("resources/resource.en-US.resx"); When I run this project, Visual Studio seems to look for the resources folder in the bin/Debug output folder of my project. My questions are: What is the right way to reference a resource file? I would like my installer to place this resource file under my application's folder under Program Files\MyApp\resources\resource.en-US.resx. What would be the way to make ResXResourceReader read it from that location. Thanks for your help. -Raj

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• How does Garbage Collection in Java work?

  - by Bright010957

  I was wondering how the garbage collector in Java deals with the following situation. Object A has a reference to Object B and Object B has a reference to Object C. The main program has a reference to Object A. So you can use Object B trough Object A, and Object C trough Object B trough Object A. What happens to Object B and Object C, if the link between Object A and Object B is set to null? Should Object B and Object C now been collected by the Garbage Collector? I mean there is still a connection between Object B and Object C.

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• get site source code as register user(c#)

  - by nir143

  hi. i downloaded a sourcecode of a site,but i downloaded it i saw it identify my program as a guest,i search at google and figure out that i can send a cookie when i "ask" the source code. that what i have managed to do and it still dont identify me as register user: CookieContainer cj = new; CookieContainer(); string all = ""; HttpWebRequest req = (HttpWebRequest)WebRequest.Create(Url); req.CookieContainer = cj; HttpWebResponse res = (HttpWebResponse)req.GetResponse(); CookieCollection cs=cj.GetCookies(req.RequestUri); CookieContainer cc = new CookieContainer(); cc.Add(cs); req.CookieContainer = cc; StreamReader read = new StreamReader(res.GetResponseStream()); all = read.ReadToEnd(); read.Close(); return all; what is wrong here? tyvm for help:)

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• ListView FocusedItem Becomes NULL

  - by Andy and Tyler

  When the program runs, there is a series of ListView forms. We populated one of them with items (as strings) and we check whether the state of selection has changed. Once it's changed, we grab the text of the selected item using FocusedItem.Text. The first time works just fine but when another selection is made, the selected item returns as null. The only way we can temporarily get around this issue is to clear and repopulate the form. The disadvantage is that we lose the highlighted item. There got to be another way around this. Maybe we're not clear on how ListView really works? Any ideas?

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• How to prevent Excel from wanting to start in Safe Mode?

  - by paulland

  We have a background process that calls Excel for generation of report spreadsheets. Occasionally, a crash or inadvertent server reboot will occur while Excel is running. The first launch of Excel after the restart brings up the dialog box (paraphrasing here) "Would you like to start Excel in safe mode?" (Yes/No) The issue is that our background app can't handle this dialog box, and acts as if Excel will not start properly, and the background jobs fail as a result. I can find CL switches for starting Excel in safe mode, but I can't find anything that will instruct Excel to always start in normal mode without that prompt dialog. (I don't have access to the other program's code, so I can't make it pass through a "Yes" value if it runs into that box.) Is there a registry hack or some other way I can force Excel into normal mode every time it's called?

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• Using TCPDF and FPDI with cake php

  - by kwhohasamullet

  Hi Guys, I have go TCPDF setup in my cake php install and am now trying to also use FPDI with it as i need to add a PDF to the start of the PDF that is being generated. WHen trying to do this i am using 3 classes XTCPDF which holds my header data FPDI - FPDI class TCPDF - TCPDF class and it is setup as so: XTCPDF extends FPDI FPDI extends TCPDF When i try and generate a PDF with this using commands from teh FPDI classs i get the following error: Fatal error: Cannot access protected property XTCPDF::$PDFVersion in C:\Program Files\XAMPP\xampp\htdocs\quote\app\vendors\fpdi\fpdi_pdf_parser.php on line 388 Im thinking this may be a scope problem but im not too sure, i have also tested by changing it around to not include XTCPDF class but the same error occurs, EDIT: The code that i am using that accesses the FPDI class is: $tcpdf->setSourceFile(APP.'webroot'.DS.'img'.DS.'pdf'.DS.'front_cover.pdf'); $frontCover = $tcpdf->importPage(1); $tcpdf->useTemplate($frontCover); Thanks in advance for any help :D

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• A report writer for non-programmers?

  - by Earlz

  Hello, we are wanting for users to be able to write their own reports in our application. It is a web application. We don't care if they must download an application in order to create reports, but we need for them to be able to print off reports from the web in PDF format or similar. The report writer is to be used by non-programmers, or at best very light programmers(like the ones that make VBA macros and such). (the writer is not a core part of the program though. So if there is a learning curve, then that is acceptable to a certain extent) We were looking at Crystal Reports but it seems like it'll cost $7000 which is just way too much for right now(though our system is very flexible so could support it eventually). We are also looking at Fast Reports which seems pretty promising, but I'm not sure the report writer would be easy for non-programmers to grasp. Can someone recommend a good report writer for non programmers that won't break the bank?

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• GDB doesnt like my typedef

  - by yan bellavance

  It seems that the following is to deep for the debugger in Qt even though the program uses it without problem typedef QMap <int, QStringList> day2FileNameType; typedef QMap <int, day2FileNameType> month2day2FileNameType; typedef QMap <int, month2day2FileNameType> year2month2day2FileNameType; year2month2day2FileNameType y2m2d2f; now the first 2 typeDefs work okay with the debugger but the third one retrieving data for watch view (over 100 pending request) Is it wrong for me to try and use such a typedef as year2month2day2FileNameType?

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• WPF DataGridTextColumn Can't type point for float data

  - by Alvin

  I had a WPF DataGrid and use DataGridTextColumn Binding to a Collection. The items in Collection had some float property. When my program launched, I modify the value of float property in DataGrid, if I type a integer value, it works well. But if I type char . for a float value, char . can't be typed. I had to type all the numbers first, and then jump to the . position to type char . to finish my input. So how can I type . in my situation? Thanks.

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• How do I create an Access 2003 MDE programmatically or by command line in Access 2007?

  - by Ned Ryerson

  I have a legacy Access 2003 database file that must remain in that format to preserve its menus and toolbars. I have recently moved to Access 2007 in my build environment and will be deploying the compiled Access 2003 program with the Access 2007 runtime. In Access 2003, I could script the process of creating an MDE with the Access Developer Extensions (WZADE.mde) using the command line and an .xml file of build preferences (without creating an install package). The Access 2007 developer extensions do not seem to offer a similar option. I can "Package a Solution", but it creates an accdr and buries it in a CD installer. I've tried programmatic options like Docmd.RunCommand acMakeMDEFILe and Syscmd(603, mdbpath, mdepath) but they no longer work in Access 2007. Of course, i can manually create an MDE using Database ToolsCreate MDE, but that is no scriptable as far as I can tell.

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• CACLS Confusion

  - by codeulike

  During my NSIS setup script for a WinForms app, I use the following CACLS command to give the Users group full rights to a subfolder: Exec 'CACLS "$INSTDIR\SubFolder" /E /T /C /G "Users":F' So in effect the CACLS command executed is something like: CACLS "c:\Program Files\MyApp\SubFolder" /E /T /C /G "Users":F When I then look at the Folder permissions in Windows Explorer (right click on the folder and choose Properties, go to the Security tab), the correct permissions are there but they are uneditable. Furthermore, clicking the Advanced button for the 'Advanced Security Settings' shows that SubFolder is inheriting the "Users" group permissions from a 'Parent Object', but what is that Parent Object, because its not the folder above. Why are the permissions added by CACLS uneditable, and why are they inherited from nonexistent parent object? I thinking I may have set the options on CACLS wrong. I'm on Windows XP.

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• run .net consolapp out of a cgi script

  - by Nico

  Hello there, i have written a simple cgi python script which looks like this #!c:/Python25/python.exe -u import cgi import os def main(): print "Content-type: text/html\n" form = cgi.FieldStorage() print form["firstname"].value os.execvp("D:\\path\\to\\my\\consolapp.exe", [""]) main() As you can se i'd like to start a consoleapp which i have written in .net. But my consoleapp crashs when i call the cgi script. So i did a little debuging and write a text file after some actions i do in my .net program. The result was that my programm crash everytime i'd like to open a access mdb file. It told me that i need the Microsoft Data Access Components (MDAC). But i cant belive this message because my .net consoleapp runs without errors if i start it from my own. So can anybody give me some advise how i can call my .net consol ab through a webscript. I'm happy for every advise So it don't have to be a solution using a cgi script. Regards, Nico

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• Beginner to RUBY - require_relative problem

  - by WANNABE

  Hi, I'm learning Ruby (using version 1.8.6) on Windows 7. When I try to run the stock_stats.rb program below, I get the following error: C:\Users\Will\Desktop\ruby>ruby stock_stats.rb stock_stats.rb:1: undefined method `require_relative' for main:Object (NoMethodE rror) I have three v.small code files: stock_stats.rb require_relative 'csv_reader' reader = CsvReader.new ARGV.each do |csv_file_name| STDERR.puts "Processing #{csv_file_name}" reader.read_in_csv_data(csv_file_name) end puts "Total value = #{reader.total_value_in_stock}" csv_reader.rb require 'csv' require_relative 'book_in_stock' class CsvReader def initialize @books_in_stock = [] end def read_in_csv_data(csv_file_name) CSV.foreach(csv_file_name, headers: true) do |row| @books_in_stock << BookInStock.new(row["ISBN"], row["Amount"]) end end # later we'll see how to use inject to sum a collection def total_value_in_stock sum = 0.0 @books_in_stock.each {|book| sum += book.price} sum end def number_of_each_isbn # ... end end book_in_stock.rb require 'csv' require_relative 'book_in_stock' class CsvReader def initialize @books_in_stock = [] end def read_in_csv_data(csv_file_name) CSV.foreach(csv_file_name, headers: true) do |row| @books_in_stock << BookInStock.new(row["ISBN"], row["Amount"]) end end # later we'll see how to use inject to sum a collection def total_value_in_stock sum = 0.0 @books_in_stock.each {|book| sum += book.price} sum end def number_of_each_isbn # ... end end Thanks in advance for any help.

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• get a process id from process name

  - by AJINKYA

  Hi i am trying to do a project using windows API in C language. The small part in my project is to get process ID of lsass.exe. i have tried the program below but it wont work. i have read about the CreateToolhelp32Snapshot, Process32First, Process32Next functions can anyone help me explaining how to use them in the code. So please help me. i am a beginner to windows API so i will appreciate it if anyone can suggest me an good ebook to refer.

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• Sql Server CE - Temporary disable auto increment on a specific collum

  - by Fábio Antunes

  Hi guys. I have this little question, thats been on my head for while now. Here it goes: Is it possible to temporary disable the Auto_Increment on the collum ID. So that i can add a new row to the table and being able specify the ID value when inserting the row. And then in the end enable the Auto_Increment again, and let do its work as usual? And if its possible how can i do it. The Table structure is very simple Collum Name (atributes) ID (Primary Key, Auto Increment, int, not null) Name (nvarchar(100), not null) Notice: The table name is: People. Lets also consider that the table already has data and cannot be changed. The database server is SQL Server CE. The SQL commands will be executed in a C# program, if its of any help. I really hope its possible, it would come very handy. Thanks

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• Good freeware COM/ActiveX Type Library Explorer?

  - by Tomalak

  I used to have a dated, but valuable solution to display COM/ActiveX control- and type-library contents (ProgIDs, method names and signatures, enumerations, constants, interfaces/coclasses, etc.) of all such libraries registered on my system. It provided an Explorer-like overview of everything that was available to ActiveX development/scripting and served as an automatic API documentation tool since official docs for most COM/ActiveX libraries are either missing completely or fragmentary at best. My recent move to a 64bit Windows rendered the program I had unusable, due to internal dependencies on the 32bit VB6 runtime (comctl32.ocx) that is no longer supported on 64bit Windows. Does anyone know an alternative that still works?

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• switch views using a button, going to a table view, iphone

  - by Jaime Rae

  My program has 4 buttons and each button calls a different table view. That works fine, but my problem is, the view controller I'm using brings up a table view that covers up my navigation bar and my tab bar. I need to replace that coding with something that will bring up a table and not cover up my nav and tab bars. Here is the coding I'm using: -(IBAction)buttonNorthWest { NorthWestViewController *nwController = [[NorthWestViewController alloc] initWithNibName:@"NorthWestView" bundle:nil]; self.nwViewController = nwController; [self.view insertSubview:nwViewController.view atIndex:0]; [self presentModalViewController:nwViewController animated:YES]; [nwController release]; } The [self presentModalViewController....] is the problem. Does anyone know how I can replace that code with something that keeps my nav and tab bars? Thanks, Jaime

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• Serial Mac OS X constantly freezes/locks/dissappears for USB to Arduino

  - by Niraj D

  I have a problem with my C++ code running in Xcode with both the AMSerial library as well as the generic C (ioctl, termios). After a fresh restart, my application works well but after I "kill" the program the Serial (I think) is not released. I have checked my open files under /dev and have killed the connection to serial USB from there, but my C++ still can't open the USB port. I have narrowed this down to being a low level Mac OS X issue, regarding blocking the port indefinitely, regardless of closing it using the aforementioned libraries. Just for context, I'm trying to send numbers through my USB port, serially to an Arduino Duemilanove at 9600 baud. Running Serial Monitor in Arduino is perfectly fine, however, running through a C++ application it freezes up my computer, occasionally, my mouse/keyboard freeze up: requiring a hard reset. How can this problem be fixed? It seems like Mac OS X is not USB friendly!

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• Cake bake undefined function mysql_query on easyphp

  - by fabbrillo

  Hi, when i try to use the shell to build models cake bake M i get this error: Fatal error: Call to undefined function mysql_query() in C:\Program Files\EasyPH P-5.3.2\www\cake\cake\libs\model\datasources\dbo\dbo_mysql.php on line 588 on phpinfo(); mysql extension is enabled, i'm using mysql driver running if(!function_exists('mysql_query')) echo 'error'; else echo 'all fine'; on a separate file prints all fine but on dbo_mysql.php just before line 588 prints error i believe the database configuration is correct as on http://127.0.0.1/cake/ it says Your database configuration file is present. and Cake is able to connect to the database. i'm using the latest stable version of cakephp and easyphp on windows xp pro sp3, paths are setted correctly any idea? thank you

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• java.lang.IllegalStateException: Parent was not null, but this component not related

  - by Muneeswaran Balasubramanian

  Hi to all, I have the following exception at the time of running jsf program. org.apache.jasper.JasperException: An exception occurred processing JSP page /pages/general/internalServerErrorPage.jsp at line 44 41: <link rel="shortcut icon" href="<%=request.getContextPath()%>/resources/images/infomindzicon.ico" type="image/x-icon" /> 42: </head> 43: <body id="sscmsMainBody"> 44: <h:form id="internalServerErrorPageForm" binding="#{ServerErrorBean.initForm}"> 45: <rich:page id="richPage" theme="#{LayoutSkinBean.layoutTheme}" 46: width="#{LayoutSkinBean.layoutScreenWidth}" 47: sidebarWidth="0"> Caused by: javax.servlet.ServletException: javax.servlet.jsp.JspException: java.lang.IllegalStateException: Parent was not null, but this component not related at org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:858) at org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:791) at org.apache.jsp.pages.general.internalServerErrorPage_jsp._jspService(internalServerErrorPage_jsp.java:207) at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70) at javax.servlet.http.HttpServlet.service(HttpServlet.java:717) at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:377) What is the meaning of this exception and how can i resolve this?Please help me.Thanks in advance.

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• Storing file permissions in Subversion repository

  - by graham.reeds

  How do you store file permissions in a repository? A few files need to be read-only to stop a third party program from trashing it but after checking out of the repository they are set to read-write. I looked on google and found a blog post from 2005 that states that Subversion doesn't store file-permissions. There are patches and hook-scripts listed (only one url still exists). Three years later does Subversion still not store file permissions and are hooks the only way to go about this? (I've never done hooks and rather use something that is native to Subversion.)

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• Computing MD5SUM of large files in C#

  - by spkhaira

  I am using following code to compute MD5SUM of a file - byte[] b = System.IO.File.ReadAllBytes(file); string sum = BitConverter.ToString(new MD5CryptoServiceProvider().ComputeHash(b)); This works fine normally, but if I encounter a large file (~1GB) - e.g. an iso image or a DVD VOB file - I get an Out of Memory exception. Though, I am able to compute the MD5SUM in cygwin for the same file in about 10secs. Please suggest how can I get this to work for big files in my program. Thanks

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• LicenseException for Xceed DataGrid for WPF

  - by ewall

  I have developed a simple DB-editing app using Xceed's excellent DataGrid for WPF (UX Edition version 3.7), which is now ready for deployment... except that when I run it on a machine other than the development one where it was built, I am getting the runtime exception for invalid licensing. I have included my license key in the App.xaml.cs exactly as specified in the Xceed docs, like so: public partial class App : System.Windows.Application { protected override void OnStartup(StartupEventArgs e) { Xceed.Wpf.DataGrid.Licenser.LicenseKey = "DGF37-xxxxx-xxxxx-xxxx"; base.OnStartup(e); } } The correct version of the DataGrid DLLs are being included in the setup and the application's program directory, and there are no other versions on the target machine. Debugging doesn't show me anything useful other than the LicenseException that is thrown when the code tries to use the DataGrid, with the message that reads "Xceed.Wpf.DataGrid.Licenser.LicenseKey property must be set to a valid license key in the code of your application before using this product..." Any idea what's going wrong here?

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• Creating line graph/chart in vb.net (VS2008)

  - by typoknig

  I am reluctant to ask this question because a lot of similar questions have been asked, but after reading through them I am not getting the info I need. I am trying to follow this tutorial and I think it is going to work ok, but I have a lot of data to put in and the tutorial has the reader create the chart data points manually. I want the data points to be generated from an integer which can change while the program is running (thus the chart size needs to change) and the y coordinate of the data points needs to come from an array. I have attempted to "bind" the data but I am messing it up somehow and I don't even think that is the best way to do what I want. Also, I do not have to use the methods suggested in the tutorial, I am looking for the highest quality most efficient way to generate a line graph in vb.net (VS2008) based on the criteria I previously mentioned.

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