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  • Delphi: How to diagnose sluggish UI?

    - by Ian Boyd
    i have a form, which you can pretend is laid out like Windows Explorer: panel on the left splitter client panel +------------+#+-----------------------+ | |#| | | |#| | | |#| | | |#| | | Left |#| Client | | |#| | | |#| | | |#| | | |#| | | |#| | +------------+#+-----------------------+ ^ | +----splitter The the left and client area panels are each rich with controls. The problem is that using the splitter is very sluggish. i would expect that a modern 2 GHz computer can re-display the form as fast as a human can push the mouse around. But that's definitely not the case, and it takes about 200-300 ms before the form is fully re-adjusted. The form has about 100 visual controls on it, no code, or custom controls. How do i go about tracing who's the cause of the sluggishness?

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  • Mouse Capture and Selection

    - by Tommy
    I have a control, that moves around alot of different controls inside of it in the form of a grid. So basically, none of the container control is shown at any point. But i do have capture of all the mousedown and mousemove events of the controls inside. What id like to do, is create an effect alot like the desktop of a windows computer, where you can drag, and every control that is inside of the mouse's drag will be thrown in a list, and when the mouse is released i can perform an action on all the selected items. Is this possible?

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  • MIDI on Android: Libs and So Forth

    - by yar
    I've been contemplating (re)building an app on iPad for some time, where I would use objective-C and DSMI to send MIDI signals to a host computer. This is not bad (I mean, except for actually writing the app). Now I'm contemplating perhaps developing the app for Android tablets (TBA). In Java, what options are available for MIDI message communication? I'm quite familiar with javax.sound.midi, but then I would need a virtual MIDI port to send messages to the host. On the other hand, if the app were done in Adobe AIR, what options would I have available for communicating with MIDI? Obviously another option is to send/receive messages over a TCP/IP socket to a Java host, and talk that way, but it sounds a tad cumbersome... or perhaps not? DSMI does use a host program, after all.

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  • How can one make a web-site accessible only when someone has a dongle?

    - by Brian M. Hunt
    Suppose you want to add an extra layer of credentials on top of a SSL-encrypted login/password, but you don't want to increase complexity to the user. Is there a way to add the requirement of the possession of a dongle to web-server authentication schemes with existing cross-platform browser capabilities? In other words, to get access to the web-site, you would need a username, password, and a USB dongle that has been plugged into the client computer. The dongle would presumably do some sort of challenge/response. It'd be ideal if this dongle solution worked with Firefox automatically or with the simple addition of a plugin. Thoughts and suggestions are appreciated.

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  • Java Compiler - Load Method

    - by Brian
    So I have been working on a java project where the goal is to create a virtual computer. So I am basically done but with one problem. I have created a compiler which translates a txt document with assembly code in it and my compiler has created a new-file with this code written as machine executable ints. But now I need to write a load method that reads these ints and runs the program but I am having difficulty doing this. Any help is much appreciated....also this is not homework if you are thinking this. The project was simply to make a compiler and now I am trying to complete it for my own interest. Thanks. Here is what I have so far for load: public void load(String filename) { FileInputStream fs = new FileInputStream(filename); DataInputStream dos = new DataInputStream(fs); dos.readInt();

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  • Craft a JSONpath expression so that it retrieves only a specific value?

    - by Alex
    Hello, I have some JSON of which the following is a small sample: results": { "div": [ { "class": "sylEntry", "id": "sylOne", "div": [ { "class": "sT", "id": "sOT", "p": "Mon 11/17, Computer work time" }, { "class": "des", "id": "dOne", "p": "All classes Siebel 0218" } ] }, I would like to only retrieve the "p" content for the div element with class "sT". I would like to use a loop and doing something like this: var arrayOfResults = $.results..div.p does not work because I only want to retrieve the p value for the div element with class "sT". So how do I construct my JSONpath so that it will retrive the array of p elements that are contained within the divs class "sT". Thanks!!

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  • Scheduled task username changed

    - by Ernst
    Hi, I created a user on our exchange server, but later changed the username. Now, when I create a scheduled task for that user, and change it's settings (run only when logged on), the username is automatically changed back to the old username. What's causing this and how do I make sure the correct, new username is used for the task (otherwise it won't run), security settings are okay. I did already log in with a different user to delete the profile on the computer and tried again with this user to no avail. The OS is windows xp, the exchange server is on windows server 2003. Thanks

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  • TortoiseSVN shows red ! decorator for folder, but no files within it are marked with !

    - by Clay Nichols
    I'm new to SVN. I'm using the latest version (svn 1.6.9, TortoiseSVN 1.6.7.18415). Some folders who a red exclamation point next to them. If I drill down, I find a sub folder with ! as well but no files within that are marked with ! (all are either a green checkmark or no icon (because they are Ignored (like .exe files) . What I've tried: Cleanup {reported success} Add {reports nothing to add. All files either under version control has been ignored per the .ignore property. Commit {succeeds} SVNupdate {succeeds} Restarted computer. Some oddities: -I had a bunch of CVS folders (these files were copied over from a PC that was using CVS but we don't need that version history so I didn't import it into SVN). I deleted those CVS\ folders and they are showing up (as unversioned files) when I CheckIn. Any ideas?

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  • How can I create an .xls file with a readwrite password from Delphi

    - by dummzeuch
    I know that it is possible to create .xls files from Delphi using ADO, OLE automation with Excel and even using several commercial libraries. My requirement now is not just creating a new .xls file and adding data to it but in addition protecting it with a password against editing. I guess this would be possible using OLE automation but that would require an Excel installation on the computer and also add all the potential hassle of OLE automation which I would like to avoid. Does any of the other solutions provide the option of password protecting the file? (Yes, I know this is far from secure, but the customer requests it. Just in case it matters: I am using Delphi 2007.)

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  • Silverlight 4 launch a trusted application into the browser ?

    - by Niklaos
    Hi guys, I just lost 5 hours looking for a answer which i haven't been able to find :p First, I'd like to force a trusted application (i need to access the file system) to display into the browser. Based on what i found on google a trusted application must be installed and launched as a desktop application (also called out-of-browser application). So, i want to have an installed application on the client side but meanwhile, the user must also be able to start this same application into a browser window when he goes on my web site. Is this possible ? Second, I'd like to give to the user the possibility to start the application from the browser. To be clear be the application is installed on the client computer but i want a button on my web site which starts the desktop application. How can i do that ? Thanks

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  • SelfReferenceProperty vs. ListProperty Google App Engine

    - by John
    Hi All, I am experimenting with the Google App Engine and have a question. For the sake of simplicity, let's say my app is modeling a computer network (a fairly large corporate network with 10,000 nodes). I am trying to model my Node class as follows: class Node(db.Model): name = db.StringProperty() neighbors = db.SelfReferenceProperty() Let's suppose, for a minute, that I cannot use a ListProperty(). Based on my experiments to date, I can assign only a single entity to 'neighbors' - and I cannot use the "virtual" collection (node_set) to access the list of Node neighbors. So... my questions are: Does SelfReferenceProperty limit you to a single entity that you can reference? If I instead use a ListProperty, I believe I am limited to 5,000 keys, which I need to exceed. Thoughts? Thanks, John

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  • Must See Conference Videos for Python/Django Developers

    - by Koobz
    There's lots of good conference videos online regarding Python and Django development. Instead of watching ST:TNG at the computer, I figure it'd more productive to hone my knowledge . Fire away with some of your most inspiring and educational Python, Django, or simply programming related talks. Provide an explanation of why you found the talk useful. Examples: James Bennet on Re-usable Apps - Got me to take a serious look at django apps. Put together a fairly robust site in two days afterwards with django-cms, django-photologue, django-contact-form. Good advice on when your app is crossing boundaries and why it's good to err on the site of 'make it a separate app.'

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  • List of IP addresses/hostnames from local network in Python

    - by joshhunt
    How can I get a list of the IP addresses or host names from a local network easily in Python? It would be best if it was multi-platform, but it needs to work on Mac OS X first, then others follow. Edit: By local I mean all active addresses within a local network, such as 192.168.xxx.xxx. So, if the IP address of my computer (within the local network) is 192.168.1.1, and I have three other connected computers, I would want it to return the IP addresses 192.168.1.2, 192.168.1.3, 192.168.1.4, and possibly their hostnames.

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  • Postback problem downloading zip file

    - by Chris Conway
    I've got a problem on a webforms application where a user selects some criteria from dropdowns on the page and hits a button on the page which calls this method: protected void btnSearch_Click(object sender, EventArgs e) They then click on button to download a zip file based on the criteria which calls this method: protected void btnDownload_Click(object sender, EventArgs e) In IE, they are prompted with the bar at the top of the browser that tells them "To help protect your security, Internet Explorer blocked this site from downloading files to your computer". When they click on that bar to download the file, it fires the btnSearch_Click event again. Response.ContentType and Response.AddHeader has been set up correctly. The problem is, that btnSearch appends criteria so basically it is being appended twice and causing problems. Is there something I can do to prevent this? This is a vs2008 web app using c# 3.5 for what it's worth. Thanks!

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  • Ubuntu Eye-Infinity across 3 displays

    - by Peter G Mac.
    So I purchased a computer recently and have been trying to customise the display. Radeon 6800 series Ubuntu 10.10 I have three 22inch 1080P lcd monitors that are mounted together. Everything is working smooth. How do I get the 'big-desktop' display where I have one enormous display across all monitors? Linux - ATI Catalyst Control Center 11.2 does not give me an option to 'group' my profiles like the pictures on their site show with Windows. I have been searching all over for help. Much Obliged, -Peter

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  • 405: Method Not Allowed WCF

    - by luiscarlosch
    I can perfectly call a WCF web method from localhost. I published to this server: http://luiscarlosch.com/WebFormClean.aspx (only firefox or chrome) with the Visual Studio publishing tool and it works fine. The problem is when a try to access it from another computer. I get the 405: Method Not Allowed. But It doest make sense because It works fine when i access it remotely from the publisher computer as I said. Any idea? [ServiceContract(Namespace = "")] [AspNetCompatibilityRequirements(RequirementsMode = AspNetCompatibilityRequirementsMode.Allowed)] public class ContactProxy { [WebGet()] [OperationContract] public Contact getByID(int IDContact) { Contact contact = new Contact(IDContact); return contact; } [OperationContract] public EntityData insertEntityData(int IDEntityDataFieldType, int IDContact, String value) { //Contact contact = new Contact(); // contact.insertEntityData(IDEntityDataFieldType, IDContact, value); EntityData entityData = new EntityData(); entityData.save(IDEntityDataFieldType, IDContact, value); return entityData; } } Neither method seems to work. I just noticed some user were able to access http://luiscarlosch.com/WebFormClean.aspx because they change the values. So. some clients can read the methods but some cant. This should be happening. Web Config <?xml version="1.0"?> <configuration> <configSections> </configSections> <connectionStrings> <add name="ApplicationServices" connectionString="data source=.\SQLEXPRESS;Integrated Security=SSPI;AttachDBFilename=|DataDirectory|\aspnetdb.mdf;User Instance=true" providerName="System.Data.SqlClient" /> </connectionStrings> <system.web> <compilation debug="true" targetFramework="4.0" /> <customErrors mode="Off"/> <authentication mode="Forms"> <forms loginUrl="~/Account/Login.aspx" timeout="2880" /> </authentication> <membership> <providers> <clear/> <add name="AspNetSqlMembershipProvider" type="System.Web.Security.SqlMembershipProvider" connectionStringName="ApplicationServices" enablePasswordRetrieval="false" enablePasswordReset="true" requiresQuestionAndAnswer="false" requiresUniqueEmail="false" maxInvalidPasswordAttempts="5" minRequiredPasswordLength="6" minRequiredNonalphanumericCharacters="0" passwordAttemptWindow="10" applicationName="/" /> </providers> </membership> <profile> <providers> <clear/> <add name="AspNetSqlProfileProvider" type="System.Web.Profile.SqlProfileProvider" connectionStringName="ApplicationServices" applicationName="/"/> </providers> </profile> <roleManager enabled="false"> <providers> <clear/> <add name="AspNetSqlRoleProvider" type="System.Web.Security.SqlRoleProvider" connectionStringName="ApplicationServices" applicationName="/" /> <add name="AspNetWindowsTokenRoleProvider" type="System.Web.Security.WindowsTokenRoleProvider" applicationName="/" /> </providers> </roleManager> </system.web> <system.webServer> <modules runAllManagedModulesForAllRequests="true"/> </system.webServer> <system.serviceModel> <behaviors> <serviceBehaviors> <behavior name="MyServiceTypeBehaviors" > <serviceMetadata httpGetEnabled="true" /> </behavior> </serviceBehaviors> <endpointBehaviors> <behavior name="WebApplicationTest.WCFProxy.EmployeeProxyAspNetAjaxBehavior"> <enableWebScript /> </behavior> <behavior name="WebApplicationTest.WCFProxy.EntityDataFieldCollectionProxyAspNetAjaxBehavior"> <enableWebScript /> </behavior> <behavior name="WebApplicationTest.WCFProxy.Service1AspNetAjaxBehavior"> <enableWebScript /> </behavior> <behavior name="WebApplicationTest.WCFProxy.ContactProxyAspNetAjaxBehavior"> <enableWebScript /> </behavior> </endpointBehaviors> </behaviors> <serviceHostingEnvironment aspNetCompatibilityEnabled="true" multipleSiteBindingsEnabled="true" /> <services> <service name="WebApplicationTest.WCFProxy.EmployeeProxy" behaviorConfiguration="MyServiceTypeBehaviors" > <endpoint address="" behaviorConfiguration="WebApplicationTest.WCFProxy.EmployeeProxyAspNetAjaxBehavior" binding="webHttpBinding" contract="WebApplicationTest.WCFProxy.EmployeeProxy" /> <endpoint contract="IMetadataExchange" binding="mexHttpBinding" address="mex" /> </service> <service name="WebApplicationTest.WCFProxy.EntityDataFieldCollectionProxy" behaviorConfiguration="MyServiceTypeBehaviors" > <endpoint address="" behaviorConfiguration="WebApplicationTest.WCFProxy.EntityDataFieldCollectionProxyAspNetAjaxBehavior" binding="webHttpBinding" contract="WebApplicationTest.WCFProxy.EntityDataFieldCollectionProxy" /> <endpoint contract="IMetadataExchange" binding="mexHttpBinding" address="mex" /> </service> <service name="WebApplicationTest.WCFProxy.Service1"> <endpoint address="" behaviorConfiguration="WebApplicationTest.WCFProxy.Service1AspNetAjaxBehavior" binding="webHttpBinding" contract="WebApplicationTest.WCFProxy.Service1" /> </service> <service name="WebApplicationTest.WCFProxy.ContactProxy" behaviorConfiguration="MyServiceTypeBehaviors" ><!--new--> <endpoint address="" behaviorConfiguration="WebApplicationTest.WCFProxy.ContactProxyAspNetAjaxBehavior" binding="webHttpBinding" contract="WebApplicationTest.WCFProxy.ContactProxy" /> <endpoint contract="IMetadataExchange" binding="mexHttpBinding" address="mex" /> </service> </services> <bindings /> <client /> </system.serviceModel> </configuration>

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  • Which connection string for MySql ODBC connector 5.2.6?

    - by stighy
    it seems i can't make work a connection to MySql using ODBC connector 5.2.6. In a 64 bit environment, in a VBA excel application, i use this string, but it not work: "Driver={MySQL ODBC 5.2 Driver}; Server=myserver;Database=mydb;User=readonly;Password=mypass;Option=3" I have also used Driver={MySQL ODBC 5.2w Driver} and Driver={MySQL ODBC 5.2a Driver} But the error is: ODBC driver unknow. Can someone help me ? Ps: it works with a DSN setted, but i would like to use a connection string so i don't go to each user computer and set a DSN. Thanks

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  • What's a reasonable number of rows and tables to be able to join in MySQL?

    - by Philip Brocoum
    I have one table that maps locations to postal codes. For example, New York State has about 2000 postal codes. I have another table that maps mail to the postal codes it was sent to, but this table has about 5 million rows. I want to find all the mail that was sent to New York State, which seems simple enough, but the query is unbelievably slow. I haven't been able to even wait long enough for it to finish. Is the problem that there are 5 million rows? I can't help but think that 5 million shouldn't be such a large number for a computer these days... Oh, and everything is indexed. Is SQL just not designed to handle such large joins?

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  • IIS 7 - floats returning with commas instead of periods

    - by cc0
    I'm having trouble reading rows with float values, because these rows return for example 12,34 instead of 12.34 as it should. I suspect this is because both my IIS and SQL server is on a Norwegian Windows Server 2008. So I went to the regional settings and customized the default decimal symbol, then restarted my servers. The output in the database now shows the period decimal symbol, but when I request it through the IIS server it comes comma separated (the IIS server is on another computer, but that also has the default decimal symbol set to period). The IIS server is IIS7 and the SQL Server is 2008 Does anyone have any idea how to fix this? Any help would be greatly appreciated.

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  • How do I get the server hostname from a mounted directory with cocoa/obj-c?

    - by Andrew
    Currently when I open a file with my program I can select files on a server by clicking on the server name in the sidebar in an NSOpenPanel and then selecting the file. No problem, this works fine for using the file as long as the shared directory is mounted. I get a path like "/Volumes/SHARENAME/filename.bla". My question is how do I get the server hostname of the computer it came from. For instance, if I clicked on the device with name SERVERNAME under "Shared" in the NSOpenPanel how do I get SERVERNAME from "/Volumes/SHARENAME/filename.bla". I have looked at quite a bit of documentation and have been unable to find a solution for this problem. Any help toward this will be greatly appreciated. Thank you.

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  • Windows 7 running as server

    - by Artur
    I'm developing a program using Windows 7. There are WCF services (soap, rest) that are used by currently by Silverlight but very soon I'll start development of the mobile application that would make use of these services. On day to day basis I use Mac and Apache to host my website, but during the development of this program I would like to use IIS7 to put my services online. I have absolutely no problems to access all the services via localhost but as soon as I'm trying to connect through the internet I get "The connection has timed out". I'm sure that my router is configured right as it works perfectly fine when I'm on Mac OS, but it looks like Windows simply blocks incoming connections from outside; I cannot even connect from another computer on the same network. So is there a way of using Windows 7 as server with IIS7 or is it only possible with Windows Server? I know it might be like enabling/disabling one setting somewhere but I just cannot find it. Please help.

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  • svn hangs when connecting to server but only for me!

    - by vgm64
    I've checked out two repositories with svn and they both have some odd behavior when using commands like svn -u status. That command in particular will hang, and top says the process is sleeping. I can check out and update those repos (usually), but this in particular will hang until I kill -9 it. It doesn't happen on anyone else's computer (I'm running Mac OSX 10.6) who uses these repos. I just checked out a fresh clean version of one of the repos, and did svn -u status and it froze. Anyone have any thoughts? Could some settings be corrupted?

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  • Are there programming languages taht rely on non-latin alphabets?

    - by Jaxsun
    Every programming language I have ever seen has been based on the Latin alphabet, this is not surprising considering I live in Canada... But it only really makes sense that there would be programming languages based on other alphabets, or else bright computer scientists across the world would have to learn a new alphabet to go on in the field. I know for a fact that people in countries dominated by other alphabets develop languages based off the Latin alphabet (eg. Ruby from Japan), but just how common is it for programming languages to be based off of other alphabets like Arabic, or Cyrillic, or even writing systems which are not alphabetic but rather logographic in nature such as Japanese Kanji? Also are any of these languages in active widespread use, or are they mainly used as teaching tools? This is something that has bugged me since I started programming, and I have never run across someone who could think of a real answer.

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  • tidy/efficient function writing in R

    - by romunov
    Excuse my ignorance, as I'm not a computer engineer but with roots in biology. I have become a great fan of pre-allocating objects (kudos to SO and R inferno by Patrick Burns) and would like to improve my coding habits. In lieu of this fact, I've been thinking about writing more efficient functions and have the following question. Is there any benefits in removing variables that will be overwritten at the start of the next loop, or is this just a waste of time? For the sake of argument, let's assume that the size of old and new variables is very similar or identical.

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  • Android alarm not working

    - by erdomester
    I've been struggling with this for hours. I've also checked the documentation and several topics. I found this code in two topics, both guys said the code was working perfectly, but not on my computer. The first Toast appears, but the second one never. What is wrong? public class HelloAndroid2 extends Activity { @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); Intent intent = new Intent(this, AlarmReceiver.class); PendingIntent pendingIntent = PendingIntent.getBroadcast(this, 0, intent, PendingIntent.FLAG_ONE_SHOT); AlarmManager alarmManager = (AlarmManager) getSystemService(ALARM_SERVICE); alarmManager.set(AlarmManager.RTC_WAKEUP, System.currentTimeMillis() + (10 * 1000), pendingIntent); Toast.makeText(this, "Alarm set", Toast.LENGTH_LONG).show(); } public final class AlarmReceiver extends BroadcastReceiver { @Override public void onReceive(Context context, Intent intent) { Toast.makeText(context, "Alarm worked.", Toast.LENGTH_LONG).show(); } } }

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