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  • RichEdit control: Determine when text is changed?

    - by Rosarch
    I'm trying to count the number of times that text is changed in a given RichEdit control. I considered using events like key down, but that gets messy when you consider keys that don't change the text (like arrows, page up, etc). And how do you make sure you get all of those keys? It seems it would be simpler to register a callback for a onTextChanged event, if one exists. Is there any way to do something like that?

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  • Scala passing type parameters to object

    - by Shahzad Mian
    In Scala v 2.7.7 I have a file with class Something[T] extends Other { } object Something extends OtherConstructor[Something] { } This throws the error: class Something takes type parameters object Something extends OtherConstructor[Something] { However, I can't do this object Something[T] extends OtherConstructor[Something[T]] { } It throws an error: error: ';' expected but '[' found. Is it possible to send type parameters to object? Or should I change and simply use Otherconstructor

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  • How to do the processing and keep GUI refreshed using databinding?

    - by macias
    History of the problem This is continuation of my previous question How to start a thread to keep GUI refreshed? but since Jon shed new light on the problem, I would have to completely rewrite original question, which would make that topic unreadable. So, new, very specific question. The problem Two pieces: CPU hungry heavy-weight processing as a library (back-end) WPF GUI with databinding which serves as monitor for the processing (front-end) Current situation -- library sends so many notifications about data changes that despite it works within its own thread it completely jams WPF data binding mechanism, and in result not only monitoring the data does not work (it is not refreshed) but entire GUI is frozen while processing the data. The aim -- well-designed, polished way to keep GUI up to date -- I am not saying it should display the data immediately (it can skip some changes even), but it cannot freeze while doing computation. Example This is simplified example, but it shows the problem. XAML part: <StackPanel Orientation="Vertical"> <Button Click="Button_Click">Start</Button> <TextBlock Text="{Binding Path=Counter}"/> </StackPanel> C# part (please NOTE this is one piece code, but there are two sections of it): public partial class MainWindow : Window,INotifyPropertyChanged { // GUI part public MainWindow() { InitializeComponent(); DataContext = this; } private void Button_Click(object sender, RoutedEventArgs e) { var thread = new Thread(doProcessing); thread.IsBackground = true; thread.Start(); } // this is non-GUI part -- do not mess with GUI here public event PropertyChangedEventHandler PropertyChanged; public void OnPropertyChanged(string property_name) { if (PropertyChanged != null) PropertyChanged(this, new PropertyChangedEventArgs(property_name)); } long counter; public long Counter { get { return counter; } set { if (counter != value) { counter = value; OnPropertyChanged("Counter"); } } } void doProcessing() { var tmp = 10000.0; for (Counter = 0; Counter < 10000000; ++Counter) { if (Counter % 2 == 0) tmp = Math.Sqrt(tmp); else tmp = Math.Pow(tmp, 2.0); } } } Known workarounds (Please do not repost them as answers) Those two first are based on Jon ideas: pass GUI dispatcher to library and use it for sending notifications -- why it is ugly? because it could be no GUI at all give up with data binding COMPLETELY (one widget with databinding is enough for jamming), and instead check from time to time data and update the GUI manually -- well, I didn't learn WPF just to give up with it now ;-) and this is mine, it is ugly, but simplicity of it kills -- before sending notification freeze a thread -- Thread.Sleep(1) -- to let the potential receiver "breathe" -- it works, it is minimalistic, it is ugly though, and it ALWAYS slows down computation even if no GUI is there So... I am all ears for real solutions, not some tricks.

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  • How to make a Generic Repository?

    - by chobo2
    Hi I am wondering if anyone has any good tutorials(or maybe even a library that is already made and well documented) on making a generic repository. I am using currently linq to sql but it might change so I don't know if you can make a generic repository that would take little to no changes if I would say switch to entity framework. Thanks

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  • Mobile web - hidden numerical input

    - by user499846
    Hi I am writing a web app (mainly iphone targeted) where the user has to enter their dob as part of the log in, I need this to be <input type = 'password'however I also want to enable the numeric section of the keyboard. I would usually change the type attr to 'number' however as this needs to be hidden I wondered if there was another way to activate the numeric pad Cheers! (ps I do not want to use any frameworks such as jquery on this)

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  • How can I automate the "generate scripts" task in SQL Server Management Studio 2008 ?

    - by Brann
    I'd like to automate the script generation in SQL Server Management Studio 2008. Right now what I do is : Right click on my database, Tasks, "Generate Scripts..." manually select all the export options I need, and hit select all on the "select object" tab Select the export folder Eventually hit the "Finish" button Is there a way to automate this task? Edit : I want to generate creation scripts, not change scripts.

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  • Django Currency Conversion

    - by Koobz
    Is there any facility in Django for doing currency conversions? Obviously, rates change day by day but I'm somewhat hopeful that the locale module has some sort of web-service based converter :P There's a snippet here that handles the formatting: http://www.djangosnippets.org/snippets/552/ But I need to localize the values first.

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  • Restructuring Site - SEO

    - by a1anm
    I am planning to restructure my site slightly which means certain urls will be changing. I rank quite well for some of these pages in google. What can I do to retain this once I change the url's? Here is an example of some of the changes: twistedtime.com/mens-watches.html to twistedtime.com/shop-by/gender/mens-watches.html twistedtime.com/watch-brands/lip-watches.html to twistedtime.com/shop-by/watch-brands/lip-watches.html

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  • Background Image comes up as white when displayed using Javascript

    - by AndroidNewbie
    I am trying to change the background image whenever the document is loaded, and when it hits this point: document.body.style.backgroundImage="url('../images/mobile-bckground.png')"; The page simply makes the background plain white. It is displayed like this in my javascript: $(function() { document.body.style.backgroundImage="url('../images/mobile-bckground.png')"; }); I have verified the image is in the right location, why is it doing this?

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  • GORM column names for simple one to many mapping

    - by Toby Hobson
    I have this setup class User { Date lastLogin // logins is a history of logins static hasMany = [logins : Date] def setLastLogin(Date date) { if (date) { lastLogin = date addToLogins(date) } } } GORM is generating a table MEMBER_LOGINS which currently looks like this: USER_ID, LOGINS Instead I would like USER_ID, DATE I tried adding a mapping in User static mapping = { logins column: 'date'; } But that just changed the foreign key so i now have DATE, LOGINS How can I change the LOGINS column? Thanks!

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  • How to apply css locally on any online page?

    - by metal-gear-solid
    For testing I don't want to upload css to FTP on each change till site complete , but site and content is online. (i'm not talking about saving page locally then apply css) Can i just apply css locally to any online page. it would be easier to edit and see changes locally till css work end. and i want to see applied effect on FF and IE. How to do that? Is it possible.

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  • How to unit test business rules?

    - by Robert Lamb
    I need a unit test to make sure I am accumulating vacation hours properly. But vacation hours accumulate according to a business rule, if the rule changes, then the unit test breaks. Is this acceptable? Should I expose the rule through a method and then call that method from both my code and my test to ensure that the unit test isn't so fragile? My question is: What is the right way to unit test business rules that may change?

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  • jquery How to refresh pages when resize happens?

    - by Maju
    I have some indicator displays settings which float above a menu. Problem is when someone resizes the 'indicators stays on the same place', the page needs to 'refreshed to position correctly'. How to have a page refresh by itself when it detects the page is being resized? or is there any better way to do it? jQuery function findPosY(b) { var a = 0; if (b.offsetParent) { while (1) { a += b.offsetTop; if (!b.offsetParent) { break } b = b.offsetParent } } else { if (b.y) { a += b.y } } return a } function findPosX(b) { var a = 0; if (b.offsetParent) { while (1) { a += b.offsetLeft; if (!b.offsetParent) { break } b = b.offsetParent } } else { if (b.x) { a += b.x } } return a } function setNotifications() { $("#shortcut_notifications span").each(function () { if ($(this).attr("rel") != "") { target = $(this).attr("rel"); if ($("#" + target).length > 0) { var a = findPosY(document.getElementById(target)); var b = findPosX(document.getElementById(target)); $(this).css("top", a - 31 + "px");//-24 $(this).css("left", b + 83 + "px")//+60 } } }); $("#shortcut_notifications").css("display", "block") } CSS #shortcut_notifications { display:none; } .notification { color:#fff; font-weight:700; text-shadow:1px 0 0 #333; background:transparent url(../images/bg_notification.png) no-repeat center; position: absolute;/*absolute*/ width:37px;/*37*/ height:37px; display:block; text-align:center; padding-top:17px; color:#ffffff; } #nav li { display:block; float:right; padding:19px 21px; text-align: left; position:relative; height:24px; font-size:16px; } HTML <li class="settings"><a class="settings" href="#">Settings</a> <ul> <li><a href="#">Game Settings</a></li> <li><a href="#">Transactions </a></li> </ul> </li>

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  • WPF Databound Listbox

    - by Jeff
    I have a listbox bound to a list of objects for a data entry screen. The item template includes textblocks, a checkbox and comboboxes. When the listbox is populated I would like to change the foreground color of the textblocks to red if object.value1 = true and object.value2 = 0. Any ideas?

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  • const object and const constructor

    - by Muhammad alaa
    Is there any way to know if an object is a const object or regular object, for instance consider the following class class String { String(const char* str); }; if user create a const object from String then there is no reason to copy the passed native string and that because he will not make any manipulation on it, the only thing he will do is get string size, string search and other functions that will not change the string.

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  • Facebook Graph API authorization problem

    - by kujawk
    If I load the following URL in Firefox and login to Facebook, I'm getting a page displaying "An invalid next or cancel parameter was specified." https://graph.facebook.com/oauth/authorize?client_id=c8caf78d724d142ee82334131ef5c9ce&redirect_uri=http://www.facebook.com/connect/login_success.html&type=user_agent&display=touch&scope=offline_access,publish_stream But if I change the display parameter to display=page I no longer get this error. Any ideas as to why?

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  • How to open tab on mouse over using jquery without using iframe and putting all content in same page

    - by jitendra
    I just want to open another tab without refreshing and on mouse over like this http://fnagel.github.com/jQuery-Accessible-RIA/Tabs/mouseover.html . Is it possible with these things. Pages url should be change like as it now. I want to keep content in separate page on clicking on another tab it should open without refreshing i don't want to open tab content as a iframe I liked the idea of this http://jonplante.com/demo/tabs-1-2/?js=on but page url is not changing so other pages cannot be bookmarked

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