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  • WndProc(ref Message m), Prevent minimize Games, Send key strokes.

    - by Stanomatic
    Overview: I am going to create a touch application that interfaces with games and other apps. This concept is similar to the app found on touch-buddy.com but I will be using C# and WPF instead of how the application is written in Perl. I have a few challenges I would like to evaluate. The touch-buddy app uses two approaches while interacting with games; 1. Client mode (Same machine runs both game and touch-buddy). 2. Server / Client mode where a separate box sends commands to the game machine. The reason I believe for this method was to circumvent the issue with games minimizing. In Client only mode I am faced with the issue where I touch a screen OTHER than the main screen where the game is viewed and then the game minimizes. Not all games have this behavior but I would like to conquer the games that do minimize and prevent it. Is it possible to keep a game front and center Focused and prevent minimizing utilizing C# WndProc(ref Message m)? I have been experimenting with WndProc(ref Message m) where I created a win form and when I press minimize on my own Win form and it will close an instance of notepad. This proves to me that I can capture a message, prevent that message from bubbling up and then send a message to another application. I then tried to click on notepad with my touch screen and keep my win form application in focus and not minimize. At this point I am unsuccessful. I need more time understanding message codes. Is this the right approach? Can it be done? Should I look at other libraries such as Windows Automation? Key input is my other concern. What is the best way to send key strokes to other apps/games. Should I tap into DirectX, use some kind of send key, Automation Framework? Can any of these handle the multiple key strokes that some simulation games require? I appreciate any links and or insight you may have. If you have gone down this path for any reason I would love to hear your comments. Stan

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  • Choosing proper database for a few users application

    - by tomo
    Requirements: tiny WinForms client app (C# 4.0, WinForms or WPF) a few users working simultinausly no database service at all - the whole engine as *.DLLs inside client apps database available as shared folder on one computer at least simple concurrrency checks compatible with nHibernate or EntityFramework / NET 4.0 backup as simple as copying files from shared folder - assuming no running clients at the moment no stored procedures/triggers required data size - a few tables and a few thousands rows after 2 years Nice to have: user access rights encrypted data I'm trying to choose between: MS Access SqlLite SqlServer Compact Edition. Can you recommend which one should be the best for these requirements?

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  • @Local annotation in EJB 3.

    - by stratwine
    Hi, I have a stateless session bean and a standalone-java-program acting as a client. The bean method executes just fine when the interface is marked @Remote. However,when I mark that interface with @Local instead of @Remote, I get the following Exception. [java] javax.naming.NamingException: Could not dereference object [Root exception is java.lang.RuntimeException: Could not find InvokerLocator URL at JNDIaddress "chapter1/HelloUserBean/local"; looking up local Proxy from Remote JVM?] But I expected even the latter to work, since it is the same computer that the code executes in. Seeing this behavior, I am assuming that, the Application-Server and the Standalone-Java-Program use different JVM instances and not a single JVM instance and so this client can access only through a remote interface. Is that assumption correct ? Thanks !

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  • Dealing with passwords securely

    - by Krt_Malta
    Hi I have a Java web service and a Java web client making use of this service. One of the functions is to create a new user account. My two concerns are: How will I send the user's password securely from the client. How will I store the user's password securely on the server. How can I achieve these? I know the theory basically behind security, security algorithms etc but can anyone give me some advice on how I should go about in coding? Could anyone point me to some good (and if possible not complicated) examples to follow since I found some examples on the Internet very contorted? Thanks a lot and regards, Krt_Malta

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  • Bypassing Browser popup blocking when automatic session timout occurs

    - by Joseph
    Hi all, Please help regarding the following issue. I have enabled the "Block popup" option in browser. We are doing a session validation using a background ajax call to check the session is active or not. If the session is not active for a desired interval a popup window will come for notification. Now comming to the problem . since the session notification popup is comming automatically without any client interaction, This popup is blocked by the browser. But if a client clicks anyother popup window in the form that popup window will not be blocked by the browser.

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  • Custom SQL Server driver

    - by hoodoos
    I had a crazy thought about writing my own SQL Server driver to make it work something like non-blocking http client, so it won't be thread thirsty and could handle lots of db queries within one thread. I tried to look over google for some guidelines about implementing SQL Server client protocol, but found none really, where do those guys get information about it when they write own implementations for PHP or python? I need a really low level to be documented so I can implement all phases of working with a connection through sockets. And would be really nice to have a an example in c# language. :)

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  • Finding an available network port on the machine

    - by Tomer Vromen
    I'm trying to implement a simple FTP server (a variation of the EFTP protocol) in linux. When a client connects and sends the PASV command, the server should respond with a port number, so the client can connect to that port to transmit the file. How can the server choose a port number? Do I need to iterate through all the ports from 1024 to 65535 until I find a port that the process can bind to? I know that calling bind() with 0 as the port automatically chooses the port to bind to, but then how can I know which port was chosen? Many thanks.

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  • Problem with "write" function in linux

    - by Dumitru Catalin
    I am trying to write 2 server/client programs under Linux, in which they communicate through named pipes. The problem is that sometimes when I try to write from the server into a pipe that doesn't exist anymore (the client has stopped), I get a "Resource temporarily unavailable" error and the server stops completely. I understand that this is caused by using a O_NONBLOCK parameter when opening the fifo chanel, indicating the point where the program would usually wait until it could write again in the file, but is there a way to stop this behavior, and not halt the entire program if a problem occurs (shouldn't the write command return -1 ad the program continue normally)? And another strange thing is that this error only occurs when running the programs outside the ide (eclipse). If I run both programs inside eclipse, on error the write function just returns -1 and the programs continues normally.

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  • Can you create a HIPAA compliant Amazon S3 Web Application?

    - by xkingpin
    I am facing some questions when trying to design an S3 application using ASP.NET MVC and trying to stay HIPAA compliant. My initial plan was to require an SSL connection to my web server, encrypt the images on my server, then send them to s3 using my private keys. Here's my obvious concerns: You cannot store unencrypted images in any temporary file cache when client views images within the browser. Even if I setup an ashx to generically handle the image in memory, couldn't this get stored in cache? Saying the images will be encrpyted because you will be connecting to my server via https still does not guarantee all browsers will not cache data. It's not possible to even consider the "Query String" with expiration option since data will be encrypted before being stored on disk at s3, and will again be decrypted at my server in memory. I think my only option would be to write/purchase some sort of ActiveX component that will not expose the image as a simple html image source or write my app as a client side WinForm application.

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  • WPF ClickOnce Bootstrap Dection Failure on One Machine

    - by Dexter Morgan
    Hello Friend, I've decided to use ClickOnce technology to deploy my new WPF application. By and large, ClickOnce works as advertised but I've hit a minor glitch regarding Bootstrapping and framework detection. Some background: - I'm using the standard Visual Studio-generated publish.htm page as my launch page. - The only prerequisite is the .NET Framework 4.0 Client Profile. - All clients using IE 8. - All clients already have the .NET 4.0 Client Profile installed. ClickOnce works as advertised on the vast majority of machines. The VS-generated JScript correctly detects that the framework is installed and presents the user with a Run button. The app launches just fine. I'm getting odd results on one of the machines, however. On the offending machine, the VS-generated JScript tells the user that the prereqs may not be installed -- or rather, it FAILS to detect that the framework is already installed. The "launch" link successfully launches the application but the Run link points to the bootstrapper setup.exe. Why is it failing to detect the framework on this one machine? It occurred to me that framework detection is largely a matter of examining the useragent string that's submitted by the browser. So, what you see below are two UserAgent strings. The first is from a machine where things are working properly. The second is from the offending machine. THIS ONE WORKS: 2011-01-11 15:14:14 W3SVC1 192.168.0.36 GET /publish.htm - 80 - 72.130.187.100 Mozilla/4.0+(compatible;+MSIE+8.0;+Windows+NT+6.0;+Trident/4.0;+SLCC1;+.NET+CLR+2.0.50727;+Media+Center+PC+5.0;+.NET+CLR+3.5.21022;+.NET+CLR+3.5.30729;+.NET+CLR+3.0.30729;+.NET4.0C) 304 0 0 THIS ONE DOESN'T: 2011-01-11 18:49:12 W3SVC1 192.168.0.36 GET /publish.htm - 80 - 76.212.204.169 Mozilla/4.0+(compatible;+MSIE+8.0;+Windows+NT+6.1;+WOW64;+Trident/4.0;+GTB6.6;+SLCC2;+.NET+CLR+2.0.50727;+.NET+CLR+3.5.30729;+.NET+CLR+3.0.30729;+Media+Center+PC+6.0;+.NET4.0C) 200 0 0 The useragent string of both machines clearly states, "hey the .NET 4.0 client profile is installed here" -- yet the second machine seems unable to detect it. I don't know enough about useragent strings to understand why the former works and the latter fails. The only difference as far as I can tell is that the offending machine is running 64bit. But that shouldn't make a difference. Should it? Any ideas? Dexter Morgan

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  • Multiple webservice calls

    - by Mujtaba Hassan
    I have a webservice (ASP.NET) deployed on a webfarm. A client application consumes it on daily basis. The problem is that some of its calls are duplicated (with difference of milliseconds). For example I have a function Foo(string a,string b). The client app calls this webmethod as Foo('test1','test2') once but my log shows that it is being called twice or sometimes 3 or 4 times randomly. Is this anything wrong with the webfarm or the code? Note that the webmethod has simple straighfarward insert and update statements.

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  • How can I consume a WSDL (SOAP) web service in Python?

    - by DavidM
    I want to use a WSDL SOAP based web service in Python. I have looked at the Dive Into Python code but the SOAPpy module does not work under Python 2.5. I have tried using suds which works partly, but breaks with certain types (suds.TypeNotFound: Type not found: 'item'). I have also looked at Client but this does not appear to support WSDL. And I have looked at ZSI but it looks very complex. Does anyone have any sample code for it? The WSDL is https://ws.pingdom.com/soap/PingdomAPI.wsdl and works fine with the PHP 5 SOAP client.

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  • How to get number of rows deleted from mysql in shell script

    - by simonlord
    Hi all I can't work out how to get the mysql client to return the number of rows deleted to the shell when running a delete. Does anyone know what option will enable this? Or ways around it? Here's what i'm trying, but i get no output: #!/bin/bash deleted=`mysql mydb -e "delete from mytable where insertedtime < '2010-04-01 00:00:00'"|tail -n 1` I was expecting something like this as the output from mysql: deleted 999999 Which is why i have the tail -n 1 so i only pick up the count and not the column name. When running the command by hand (mysql mydb -e "delete from mytable where insertedtime < '2010-04-01 00:00:00'") there is no output. When running the command interactively when running the mysql client i ge the following: mysql>delete from mytable where insertedtime < '2010-04-01 00:00:00'; Query OK, 0 rows affected (0.00 sec) I want to get the rows affected count into my shell variable. Any help would be most appreciated.

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  • Proper abstraction of the database tier in a 3 tier system?

    - by Earlz
    Hello, I am creating a 3 tier application. Basically it goes Client - (through optional server to be a thin-client) - Business Logic - Database Layer And basically making it so that there is never any skipping around. As such, I want for all of the SQL queries and such to be in the Database Layer. Well, now I'm a bit confused. I made a few static classes to start off the database tier but what should I do for the database connections? Should I just create a new database connection anytime I enter the Database Layer or would that be wasteful? Does Connection.Open() take time whenever you have a ConnectionPool? To me, it just feels wrong for the Business tier to have to pass in a IdbConnection object to the Database tier. It seems like the Database tier should handle all of that DB-specific code. What do you think? How can I do it the proper way while staying practical?

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  • Working with EnumSet class in GWT

    - by zenmonkey
    I am having trouble using EnumSet on the client side. I get this runtime error message: java.util.EnumSet.EnumSetImpl is not default instantiable (it must have a zero-argument constructor or no constructors at all) and has no custom serializer. Is this is a known issue? Here is what I am doing (basically a hello world app) Service: String echo (EnumSet<Names> name) throws IllegalArgumentException; Client: echoServ.echo (EnumSet.of(Names.JOHN), new AsyncCallback<String>() { ....... }); Shared enum class enum Names { JOHN, NUMAN, OBAMA }

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  • [Jquery Validation Plugin]How to conditionally execute a jquery validation?

    - by Pandiya Chendur
    I am validating form using jquery validation plugin...... rules: { Name: "required", MobileNo: { required: true, minlength: 10, remote: '<%=Url.Action("getClientMobNo", "Clients") %>' }, Address: "required" }, messages: { Name: "please provide a client name", MobileNo: { required: "Please provide a mobile phone no", rangelength: jQuery.format("Enter at least {0} characters"), remote: jQuery.format("This MobileNo is already in use") }, Address: "please provide client address" }, This works pretty well on add form validation but i use the same form for edit here they can use the same mobile no,but my plugin validates that mobileno saying there is already a mobileno... But how to execute remote attribute based on a condition, MobileNo: { required: true, minlength: 10, if($("#HfId").val() == ""){ remote: '<%=Url.Action("getClientMobNo", "Clients") %>' } }, Is this a valid jquery conditional validation statement.... How to skip remote attribute based on a condition....

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  • How to keep Hibernate mapping use under control as requirements grow

    - by David Plumpton
    I've worked on a number of Java web apps where persistence is via Hibernate, and we start off with some central class (e.g. an insurance application) without any time being spent considering how to break things up into manageable chunks. Over time as features are added we add more mappings (rates, clients, addresses, etc.) and then amount of time spent saving and loading an insurance object and everything it connects to grows. In particular you get close to a go-live date and performance testing with larger amounts of data in each table is starting to demonstrate that it's all too slow. Obviously there are a number of ways that we could attempt to partition things up, e.g. map only the client classes for the client CRUD screens, etc., which would have been better to get in place earlier rather than trying to work it in at the end of the dev cycle. I'm just wondering if there are recommendations about ways to handle/mitigate this.

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  • DB Design Pattern - Many to many classification / categorised tagging.

    - by Robin Day
    I have an existing database design that stores Job Vacancies. The "Vacancy" table has a number of fixed fields across all clients, such as "Title", "Description", "Salary range". There is an EAV design for "Custom" fields that the Clients can setup themselves, such as, "Manager Name", "Working Hours". The field names are stored in a "ClientText" table and the data stored in a "VacancyClientText" table with VacancyId, ClientTextId and Value. Lastly there is a many to many EAV design for custom tagging / categorising the vacancies with things such as Locations/Offices the vacancy is in, a list of skills required. This is stored as a "ClientCategory" table listing the types of tag, "Locations, Skills", a "ClientCategoryItem" table listing the valid values for each Category, e.g., "London,Paris,New York,Rome", "C#,VB,PHP,Python". Finally there is a "VacancyClientCategoryItem" table with VacancyId and ClientCategoryItemId for each of the selected items for the vacancy. There are no limits to the number of custom fields or custom categories that the client can add. I am now designing a new system that is very similar to the existing system, however, I have the ability to restrict the number of custom fields a Client can have and it's being built from scratch so I have no legacy issues to deal with. For the Custom Fields my solution is simple, I have 5 additional columns on the Vacancy Table called CustomField1-5. This removes one of the EAV designs. It is with the tagging / categorising design that I am struggling. If I limit a client to having 5 categories / types of tag. Should I create 5 tables listing the possible values "CustomCategoryItems1-5" and then an additional 5 many to many tables "VacancyCustomCategoryItem1-5" This would result in 10 tables performing the same storage as the three tables in the existing system. Also, should (heaven forbid) the requirements change in that I need 6 custom categories rather than 5 then this will result in a lot of code change. Therefore, can anyone suggest any DB Design Patterns that would be more suitable to storing such data. I'm happy to stick with the EAV approach, however, the existing system has come across all the usual performance issues and complex queries associated with such a design. Any advice / suggestions are much appreciated. The DBMS system used is SQL Server 2005, however, 2008 is an option if required for any particular pattern.

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  • Run Oracle Procedure just to lock row, without returning a resultset

    - by Pascal
    I want to run a procedure to force a row lock on a row, but I don't want to return a result set to the client, nor do I actually want to update anything. Below is the proc: CREATE OR REPLACE PROCEDURE SP_LOCK_Row (IDRow IN INTEGER) IS BEGIN SELECT * FROM TBLTable WHERE IDRow = IDRow FOR UPDATE; END; The problem is that I keep getting the error: PLS-00428: an INTO clause is expected in this SELECT statement. Is there a way for me to lock the row without actually having to return a result set back to the client? The SQL Server equivalent is: CREATE PROCEDURE dbo.SP_LOCK_Row( @IDRow INT) AS SELECT * FROM dbo.TBLTable WITH (UPDLOCK, ROWLOCK) WHERE IDRow = @IDRow Tks

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  • how do i set up a load balanced Rails web server using mongrel, lighttpd and iis on windows 2003

    - by user91519
    I understand that this is not the perfect environment for doing this but please stick with me and help if you can... The set up I want to achieve is to have my rails application running on a windows 2003 server, using a pack of mongrels with lighttpd acting as the load balancer and IIS in front of it all passing client requests to lighttpd. first of all i've followed these instructions: deploying to iis on windows And I've managed to get the application to run, BUT if the client clicks on a link button the app bombs out with a 500 server error. If I just run against one of the mongrel servers, the the app behaves ok, so I think its lightpd. Its almost as if the lighttpd gets confused with multiple GET requests (i.e. multiple clicks) and bombs out. Any help on why i'm getting 500 errors would be helpful, thanks.

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  • SQL - Joining multiple records to one record

    - by ho
    I've got a SQL Server database with the the following tables: Client (ClientID, ClientName) SalesAgent (AgentID, AgentName) Item (ItemID, Description) Purchase (PurchaseID, ClientID, Price) PurchaseSalesAgent (PurchaseID, AgentID) Each purchase is only ever one item to one client but there can have been multiple agents involved. I want to return the following list of columns: ClientName, Description, Price, Agents Where Agents is the names of all the agents involved in the purchase. Either as a comma separated list or as multiple columns with one agent in each. I'm looking for a way that's compatible with SQL Server 2000 but I'd also be interested in if there's a better way of doing it in SQL Server 2008.

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  • How to install system_timer gem on Windows 7

    - by user280405
    I got problem "Processing environment.rb: Pre Initialisation Phase (using rails 2.3.5)" "Processing environment.rb: Main Initialisation Phase" C:/Ruby/bin/rake: No such file or directory - svnversion [memcache-client] Could not load SystemTimer gem, falling back to Ruby's slower/unsafe timeout library: no such file to load -- system_timer rake aborted! unable to find server during initialization. C:/Ruby/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:2383:in `raw_load_rakefile' I dunno how to install this gem, because when i exec gem install system_timer i receiving: "Processing environment.rb: Pre Initialisation Phase (using rails 2.3.5)" "Processing environment.rb: Main Initialisation Phase" C:/Ruby/bin/rake: No such file or directory - svnversion [memcache-client] Could not load SystemTimer gem, falling back to Ruby's slower/unsafe timeout library: no such file to load -- system_timer rake aborted! unable to find server during initialization. C:/Ruby/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:2383:in `raw_load_rakefile' Anybody, help please!

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  • How can I start a TCP server in the background during a Perl unit test?

    - by John
    I am trying to write a unit test for a client server application. To test the client, in my unit test, I want to first start my tcp server (which itself is another perl file). I tried to start the TCP server by forking: if (! fork()) { system ("$^X server.pl") == 0 or die "couldn't start server" } So when I call make test after perl Makefile.PL, this test starts and I can see the server starting but after that the unit test just hangs there. So I guess I need to start this server in background and I tried the & at the end to force it to start in background and then test to continue. But, I still couldn't succeed. What am I doing wrong? Thanks.

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  • What's a good way to detect wrap-around in a fixed-width message counter?

    - by Kristo
    I'm writing a client application to communicate with a server program via UDP. The client periodically makes requests for data and needs to use the most recent server response. The request message has a 16-bit unsigned counter field that is echoed by the server so I can pair requests with server responses. Since it's UDP, I have to handle the case where server responses arrive out of order (or don't arrive at all). Naively, that means holding on to the highest message counter seen so far and dropping any incoming message with a lower number. But that will fail as soon as we pass 65535 messages and the counter wraps back to zero. Is there a good way to detect (with reasonable probability) that, for example, message 5 actually comes after message 65,000? The implementation language is C++.

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