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  • how to save extracted icon in delphi

    - by radick
    hi all I am trying to make icon extractor i am successful in getting icon to image1.picture.icon ,its looking same as orginal file icon, but when i am trying to save (iamge1.picture.icon.savetofile(c:\imahe.ico)) its not saving as it is ,it saving with less colur and looking ugly cany any one please tell me what i am doing wrong ? here is my code procedure TForm1.Button1Click(Sender: TObject); begin OpenDialog1.Filter:='All files |*.*'; OpenDialog1.Title:='Please select file'; if OpenDialog1.Execute then Edit1.Text:=OpenDialog1.FileName; end; procedure TForm1.Button3Click(Sender: TObject); var szFileName: string; Icon: TIcon; SHInfo: TSHFileInfo; begin szFileName := Edit1.Text; if FileExists(Edit1.Text) then begin Icon := TIcon.Create; SHGetFileInfo(PChar(szFileName), 0, SHInfo, SizeOf(SHInfo), SHGFI_ICON); Icon.Handle := SHInfo.hIcon; Image1.Picture.Icon := Icon; end; end; procedure TForm1.Button2Click(Sender: TObject); begin if SaveDialog1.Execute then begin Image1.Picture.Icon.SaveToFile(SaveDialog1.FileName+'.ico'); ShowMessage('done'); end; end;

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  • NHibernate flush should save only dirty objects

    - by Emilian
    Why NHibernate fires an update on firstOrder when saving secondOrder in the code below? I'm using optimistic locking on Order. Is there a way to tell NHibernate to update firstOrder when saving secondOrder only if firstOrder was modified? // Configure var cfg = new Configuration(); var configFile = Path.Combine( AppDomain.CurrentDomain.BaseDirectory, "NHibernate.MySQL.config"); cfg.Configure(configFile); // Create session factory var sessionFactory = cfg.BuildSessionFactory(); // Create session var session = sessionFactory.OpenSession(); // Set session to flush on transaction commit session.FlushMode = FlushMode.Commit; // Create first order var firstOrder = new Order(); var firstOrder_OrderLine = new OrderLine { ProductName = "Bicycle", ProductPrice = 120.00M, Quantity = 1 }; firstOrder.Add(firstOrder_OrderLine); // Save first order using (var tx = session.BeginTransaction()) { try { session.Save(firstOrder); tx.Commit(); } catch { tx.Rollback(); } } // Create second order var secondOrder = new Order(); var secondOrder_OrderLine = new OrderLine { ProductName = "Hat", ProductPrice = 12.00M, Quantity = 1 }; secondOrder.Add(secondOrder_OrderLine); // Save second order using (var tx = session.BeginTransaction()) { try { session.Save(secondOrder); tx.Commit(); } catch { tx.Rollback(); } } session.Close(); sessionFactory.Close();

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  • Bound checkbox does not update its datasource.

    - by Scott Chamberlain
    I have a checkbox who's checked value is bound to a binding source which is bound to a boolean data table column. When I click my save button to push my changes in my data table to my sql server the value in the data table is never changed. Designer code. this.cbxKeepWebInfinityChanges = new System.Windows.Forms.CheckBox(); this.preProductionBindingSource = new System.Windows.Forms.BindingSource(); // // cbxKeepWebInfinityChanges // this.cbxKeepWebInfinityChanges.AutoSize = true; this.cbxKeepWebInfinityChanges.DataBindings.Add(new System.Windows.Forms.Binding("Checked", this.preProductionBindingSource, "WEBINFINTY_CHANGES", true, System.Windows.Forms.DataSourceUpdateMode.OnPropertyChanged)); this.cbxKeepWebInfinityChanges.Location = new System.Drawing.Point(6, 98); this.cbxKeepWebInfinityChanges.Name = "cbxKeepWebInfinityChanges"; this.cbxKeepWebInfinityChanges.Size = new System.Drawing.Size(152, 17); this.cbxKeepWebInfinityChanges.TabIndex = 30; this.cbxKeepWebInfinityChanges.Text = "Keep WebInfinity Changes"; this.cbxKeepWebInfinityChanges.UseVisualStyleBackColor = true; this.cbxKeepWebInfinityChanges.CheckedChanged += new System.EventHandler(this.CauseApplyChangesActivation); // // preProductionBindingSource // this.preProductionBindingSource.AllowNew = false; this.preProductionBindingSource.DataMember = "PreProduction"; this.preProductionBindingSource.DataSource = this.salesLogix; Save Code //the comments are the debugger values before the call in going from checked when loaded to unchecked when saved. private void btnApplyChanges_Click(object sender, EventArgs e) { (...) // non related saving logic for other controls preProductionBindingSource.EndEdit(); // checked = false, databinding = true, datatable = true preProductionTableAdapter.Update(salesLogix.PreProduction); // checked = false, databinding = true, datatable = true } After the saving code the box rechecks itself. The same things happens when going from unchecked to checked. does not save the change and reverts to the old value. Other items I have bound to the same data-binding source (I have two combo boxes) are updating correctly.

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  • Override ActiveRecord#save, Method Alias? Trying to mixin functionality into save method...

    - by viatropos
    Here's the situation: I have a User model, and two modules for authentication: Oauth and Openid. Both of them override ActiveRecord#save, and have a fair share of implementation logic. Given that I can tell when the user is trying to login via Oauth vs. Openid, but that both of them have overridden save, how do "finally" override save such that I can conditionally call one of the modules' implementations of it? Here is the base structure of what I'm describing: module UsesOauth def self.included(base) base.class_eval do def save puts "Saving with Oauth!" end def save_with_oauth save end end end end module UsesOpenid def self.included(base) base.class_eval do def save puts "Saving with OpenID!" end def save_with_openid save end end end end module Sequencer def save if using_oauth? save_with_oauth elsif using_openid? save_with_openid else super end end end class User < ActiveRecord::Base include UsesOauth include UsesOpenid include Sequencer end I was thinking about using alias_method like so, but that got too complicated, because I might have 1 or 2 more similar modules. I also tried using those save_with_oauth methods (shown above), which almost works. The only thing that's missing is that I also need to call ActiveRecord::Base#save (the super method), so something like this: def save_with_oauth # do this and that super.save # the rest end But I'm not allowed to do that in ruby. Any ideas for a clever solution to this?

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  • Binding data to the custom DataGridView

    - by Jatin Chaturvedi
    All, I have a customized DataGridView where I have implemented extra functionality and bounded datasource in the same custom DataGridView (Using C# and .NET). Now, I could able to use it properly by placing it on a panel control. I have added label as button on panel control to display data from datasource on to datagrid and create a binding source. Another Label which act as a button is used to update data from grid to databse. Issue: I pressed show label to display data in a dsatagridview. Modified the grid cell value and immediately pressed update label which is on same panel control. I observed that, the cursor is still in the grid cell when I press Save button. While saving, the cell value is null even though I have entered something in the presentation layer. My expected behaviour is to get the modified value while saving. Special Case: After typing something in the grid cell, if I click on somewhere else like the row below where I entered something, before I click on Save button, it is working fine. (Here, mainly I tried to remove the focus from the currently modified cell) Is there any way to bind sources before I click on save button? Please suggest me. Please feel free to ask me if you need any information. I have also seen same kind of problem on this forum, but unfortunately the author got the answer and didnt post it back. here is that URL: http://social.msdn.microsoft.com/Forums/en/winformsdesigner/thread/54dcc87a-adc2-4965-b306-9aa9e79c2946 Please help me.

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  • How to test the expectation on the eventSpy

    - by Lorraine Bernard
    I am trying to test a backbone.model when saving. Here's my piece of code. As you can see from the comment there is a problem with toHaveBeenCalledOnce method. P.S.: I am using jasmine 1.2.0 and Sinon.JS 1.3.4 describe('when saving', function () { beforeEach(function () { this.server = sinon.fakeServer.create(); this.responseBody = '{"id":3,"title":"Hello","tags":["garden","weekend"]}'; this.server.respondWith( 'POST', Routing.generate(this.apiName), [ 200, {'Content-Type': 'application/json'}, this.responseBody ] ); this.eventSpy = sinon.spy(); }); afterEach(function() { this.server.restore(); }); it('should not save when title is empty', function() { this.model.bind('error', this.eventSpy); this.model.save({'title': ''}); expect(this.eventSpy).toHaveBeenCalledOnce(); // TypeError: Object [object Object] has no method 'toHaveBeenCalledOnce' expect(this.eventSpy).toHaveBeenCalledWith(this.model, 'cannot have an empty title'); }); }); console.log(expect(this.eventSpy));

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  • does sfWidgetFormSelect provide a string or an int of the selected item?

    - by han
    Hey guys, I'm having an annoying problem. I'm trying to find out what fields of a form were changed, and then insert that into a table. I managed to var_dump in doUpdateObjectas shown in the following public function doUpdateObject($values) { parent::doUpdateObject($values); var_dump($this->getObject()->getModified(false)); var_dump($this->getObject()->getModified(true)); } And it seems like $this-getObject()-getModified seems to work in giving me both before and after values by setting it to either true or false. The problem that I'm facing right now is that, some how, sfWidgetFormSelect seems to be saving one of my fields as a string. before saving, that exact same field was an int. (I got this idea by var_dump both before and after). Here is what the results on both var dumps showed: array(1) {["annoying_field"]=> int(3)} array(1) {["annoying_field"]=>string(1)"3"} This seems to cause doctrine to think that this is a modification and thus gives a false positive. In my base form, I have under $this->getWidgets() 'annoying_field' => new sfWidgetFormInputText(), under $this->setValidators 'annoying_field' => new sfValidatorInteger(array('required' => false)), and lastly in my configured Form.class.php I have reconfigured the file as such: $this->widgetSchema['annoying_field'] = new sfWidgetFormSelect(array('choices' => $statuses)); statuses is an array containing values like {""a", "b", "c", "d"} and I just want the index of the status to be stored in the database. And also how can I insert the changes into another database table? let's say my Log table? Any ideas and advice as to why this is happen is appreciated, I've been trying to figure it out and browsing google for various keywords with no avail. Thanks! Edit: ok so I created another field, integer in my schema just for testing. I created an entry, saved it, and edited it. this time the same thing happened!

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  • How do you save and retrieve a Key/IV pair securely?

    - by Shawn Steward
    I'm using VB.Net's RijndaelManaged (RM) to encrypt files, using the RM.GenerateKey and RM.GenerateIV methods to generate the Key and IV and encrypting the file using the CryptoStream class. I'm planning on saving this Key and IV to a file and want to make sure I'm doing it the right way. I am combining the IV+Key, and encrypting that with my RSA Public key and writing it out to a file. Then, to decrypt I use the RSA Private key on this file to get the IV+Key, split them up and set RM.Key and RM.IV to these values and run the decryptor. Is this the best method to accomplish this, or is there a preferred method for saving the IV & Key? Also, what's the best way to construct and deconstruct the byte array? I used the .Concat method to join them together and that seems to work well but I can't seem to find something as easy to deconstruct it. I played with the .Take method that takes the first x # of bytes and it works for the first part but can't find anything that gets the rest of it.

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  • Spider a Website and Return URLs Only

    - by Rob Wilkerson
    I'm not quite sure how best to define/articulate this, but I'm looking for a way to pseudo-spider a website. The key is that I don't actually want the content, but rather a simple list of URIs. I can get reasonably close to this idea with Wget using the --spider option, but when piping that output through a grep, I can't seem to find the right magic to make it work: wget --spider --force-html -r -l1 http://somesite.com | grep 'Saving to:' The grep filter seems to have absolutely no affect on the wget output. Have I got something wrong or is there another tool I should try that's more geared towards providing this kind of limited result set? Thanks. UPDATE So I just found out offline that, by default, wget writes to stderr. I missed that in the man pages (in fact, I still haven't found it if it's in there). Once I piped the return to stdout, I got closer to what I need: wget --spider --force-html -r -l1 http://somesite.com 2>&1 | grep 'Saving to:' I'd still be interested in other/better means for doing this kind of thing, if any exist.

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  • Designing small comparable objects

    - by Thomas Ahle
    Intro Consider you have a list of key/value pairs: (0,a) (1,b) (2,c) You have a function, that inserts a new value between two current pairs, and you need to give it a key that keeps the order: (0,a) (0.5,z) (1,b) (2,c) Here the new key was chosen as the average between the average of keys of the bounding pairs. The problem is, that you list may have milions of inserts. If these inserts are all put close to each other, you may end up with keys such to 2^(-1000000), which are not easily storagable in any standard nor special number class. The problem How can you design a system for generating keys that: Gives the correct result (larger/smaller than) when compared to all the rest of the keys. Takes up only O(logn) memory (where n is the number of items in the list). My tries First I tried different number classes. Like fractions and even polynomium, but I could always find examples where the key size would grow linear with the number of inserts. Then I thought about saving pointers to a number of other keys, and saving the lower/greater than relationship, but that would always require at least O(sqrt) memory and time for comparison. Extra info: Ideally the algorithm shouldn't break when pairs are deleted from the list.

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  • Stream PDF to another local App

    - by Nathan
    Hi, I'm currently trying to optimize a small firefox extension that will grab a pdf off the current document and send it to a port that another local application is listening on. Right now it uses a terrifying hackjob of cache viewer. The way I'm getting it is loading the cache, searching through it using the current URL and grabbing the file and saving it to a temp directory. Then I stream the file in, delete the temp, and send it through the socket. Now, my new design, ideally I'd want to build it from scratch and cut out saving it to the local machine at all, and just stream it through the socket. I've been looking at doing something like, //check page to ensure its a pdf //init in/out streams //stream through sock //flush Now, this would be vastly superior to the 400 line hacked up mess I have now, but I'm new to building FF extensions, and after reading a lot about URIs and the file streaming and such I'm probably more confused than when I started trying to fix this three hours ago. I'm okay with sending things through the sockets and whatnot, I understand that, I'm mainly confused about what multitude of interfaces I want to use. Gah! Thanks! Also, long time reader, first time poster!

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  • How SQLite on Android handles long strings?

    - by Levara
    I'm wondering how Android's implementation of SQLite handles long Strings. Reading from online documentation on sqlite, it said that strings in sqlite are limited to 1 million characters. My strings are definitely smaller. I'm creating a simple RSS application, and after parsing a html document, and extracting text, I'm having problem saving it to a database. I have 2 tables in database, feeds and articles. RSS feeds are correctly saved and retrieved from feeds table, but when saving to the articles table, logcat is saying that it cannot save extracted text to it's column. I don't know if other columns are making problems too, no mention of them in logcat. I'm wondering, since text is from an article on web, are signs like (",',;) creating problems? Is Android automaticaly escaping them, or I have to do that. I'm using a technique for inserting similar to one in notepad tutorial: public long insertArticle(long feedid, String title, String link, String description, String h1,tring h2, String h3, String p, String image, long date) { ContentValues initialValues = new ContentValues(); initialValues.put(KEY_FEEDID, feedid); initialValues.put(KEY_TITLE, title); initialValues.put(KEY_LINK, link); initialValues.put(KEY_DESCRIPTION, description ); initialValues.put(KEY_H1, h1 ); initialValues.put(KEY_H2, h2); initialValues.put(KEY_H3, h3); initialValues.put(KEY_P, p); initialValues.put(KEY_IMAGE, image); initialValues.put(KEY_DATE, date); return mDb.insert(DATABASE_TABLE_ARTICLES,null, initialValues); } Column P is for extracted text, h1, h2 and h3 are for headers from a page. Logcat reports only column p to be the problem. The table is created with following statement: private static final String DATABASE_CREATE_ARTICLES = "create table articles( _id integer primary key autoincrement, feedid integer, title text, link text not null, description text," + "h1 text, h2 text, h3 text, p text, image text, date integer);";

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  • Why is my django bulk database population so slow and frequently failing?

    - by bryn
    I decided I'd like to use django's model system rather than coding raw SQL to interface with my database, but I am having a problem that surely is avoidable. My models.py contains: class Student(models.Model): student_id = models.IntegerField(unique = True) form = models.CharField(max_length = 10) preferred = models.CharField(max_length = 70) surname = models.CharField(max_length = 70) and I'm populating it by looping through a list as follows: from models import Student for id, frm, pref, sname in large_list_of_data: s = Student(student_id = id, form = frm, preferred = pref, surname = sname) s.save() I don't really want to be saving this to the database each time but I don't know another way to get django to not forget about it (I'd rather add all the rows and then do a single commit). There are two problems with the code as it stands. It's slow -- about 20 students get updated each second. It doesn't even make it through large_list_of_data, instead throwing a DatabaseError saying "unable to open database file". (Possibly because I'm using sqlite3.) My question is: How can I stop these two things from happening? I'm guessing that the root of both problems is that I've got the s.save() but I don't see a way of easily batching the students up and then saving them in one commit to the database.

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  • Rails problem with Delayed_Job and Active Record

    - by Michael Waxman
    I'm using Delayed_Job to grab a Twitter user's data from the API, but it's not saving it in the model for some reason! Please help! (code below) class BandJob < Struct.new(:band_id, :band_username) #parameter def perform require 'json' require 'open-uri' band = Band.find_by_id(band_id) t = JSON.parse(open("http://twitter.com/users/show/#{band_username}.json").read) band.screen_name = t['screen_name'] band.profile_background_image = t['profile_background_image_url'] band.url = 'http://' + band_username + '.com' band.save! end end To clarify, I'm actually not getting any errors, it's just not saving. Here's what my log looks like: * [JOB] acquiring lock on BandJob [4;36;1mDelayed::Job Update (3.1ms)[0m [0;1mUPDATE "delayed_jobs" SET locked_at = '2009-11-09 18:59:45', locked_by = 'host:dhcp128036151228.central.yale.edu pid:2864' WHERE (id = 10442 and (locked_at is null or locked_at < '2009-11-09 14:59:45') and (run_at <= '2009-11-09 18:59:45')) [0m [4;35;1mBand Load (1.5ms)[0m [0mSELECT * FROM "bands" WHERE ("bands"."id" = 34) LIMIT 1[0m [4;36;1mBand Update (0.6ms)[0m [0;1mUPDATE "bands" SET "updated_at" = '2009-11-09 18:59:45', "profile_background_image" = 'http://a3.twimg.com/profile_background_images/38193417/fbtile4.jpg', "url" = 'http://Coldplay.com', "screen_name" = 'coldplay' WHERE "id" = 34[0m [4;35;1mDelayed::Job Destroy (0.5ms)[0m [0mDELETE FROM "delayed_jobs" WHERE "id" = 10442[0m * [JOB] BandJob completed after 0.5448 1 jobs processed at 1.8011 j/s, 0 failed ... Thanks!

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  • Loading user control dynamically looses data

    - by user228777
    I have a created a user control. This user control I dynamically load on a page inside Telerik Panelbar control. I have done all necessary coding to save the viewstate and load this dynamically created usercontrol every time page loads. On this User control I have a asp panel. By default this panel is invisible. When user clicks a button on this user control panel is made visible. On page load of this user control I populate all the controls on this panel. Everything works fine if I don’t load this use control dynamically but when I load this user control dynamically and if I make panel visible by default then only all fields on the panel are populated. But if I make by default invisible and on button click make panel visible none of the text boxes or comboboxes are populated. I populate comboboxes on page load of the userControl but inbetween postbacks all the comboboxes on the user control loose data. ON the parent page I am saving the viewstate This is my code on parent page to dynamically load userControl ( which has panel on it) Dim ucPiggyBank As SubscriberSetupPages_UserControls_PiggyBank = CType(LoadControl("~/SubscriberSetupPages/UserControls/PiggyBank.ascx"), SubscriberSetupPages_UserControls_PiggyBank) With ucPiggyBank .PiggyBankID = account.Id .ID = account.Id.ToString 'Setting up following 3 properties here to avoid database trips .PiggyBankEligibleAccounts = piggyBankEligibleAccountCollection .MemorizedNames = memorizednames .Period = period End With radPanelNewChild.Controls.Add(ucPiggyBank) radPanelNew.Items.Add(radPanelNewChild) radPanelNew.Expanded = True ‘this is the Panel item on parent page of Telerik Panelbar control. Dim radPanelPiggyBank As RadPanelItem = DirectCast(pnlbarPiggyBank.FindItemByValue("TestItem"), RadPanelItem) With radPanelPiggyBank .Items.Add(radPanelNew) .DataBind() End With ‘I am doing everything for saving viewstate on parent control This is the code on page load of userControl If Not IsPostBack Then If m_PiggyBankID <> Guid.Empty Then 'Load data Call GetPiggyBankDetails() End If I have a edit button on the user control which makes panel visible. It makes panel visible but with no data. Can you please tell me what’s happening? Thanks in advance.

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  • jquery form validation, and submit-on-change

    - by Bee
    I want to make all my settings forms across my site confirm that changes are saved, kinda like facebook does if you make changes in a form and then try to navigate away without saving. So I'm disabling the submit button on the forms only enabling if the values change. I then prompt the user to hit save before they leave the page in the case that they do have changes pending. var form = $('form.edit'); if(form.length > 0) { var orig_str = form.serialize(); $(':submit',form).attr('disabled','disabled'); form.on('change keyup', function(){ if(form.serialize() == orig_str) { setConfirmUnload(false); $(':submit',form).attr('disabled','disabled'); } else { setConfirmUnload(true); $(':submit',form).removeAttr('disabled') } }); $('input[type=submit]').click(function(){ setConfirmUnload(false); }); } function setConfirmUnload(on) { window.onbeforeunload = (on) ? unloadMessage : null; } function unloadMessage() { return 'If you navigate away from this page without saving your changes, they will be lost.'; } One of these forms needs some additional validation which I do using jQuery.validate library. e.g. if i wanted to ensure the user can't double submit the form on accident by double clicking on submit or somesuch (the actual validation in question is for a credit-card form and not this simple): $('form').validate({ submitHandler: function(form) { $(':submit', form).attr('disabled','disabled'); form.submit(); } }); Unfortunately both bits are trying to bind to submit button and they're interfering with each other such that the submit button remains disabled no matter what I do and it is impossible to submit the form at all. Is there some way to chain the validations together or something? Or some other way to avoid re-writing the validation code to repeat the "did you change anything in the form" business?

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  • Security considerations processing emails

    - by Timmy O' Tool
    I have process that will be reading emails from an account. The objective of the process is saving to a database those emails with image(s) as attachments. I will be saving sender, subject body and image path (the image will be saved on the process). I will be showing this information on a page so I would like to know all (or most of them :) ) security aspects to cover. I plan to sanitize the subject and body of the email. I can remove most of the tags, probably it would be enough keeping the <p> tag. I'm not sure if I can trust just in a sanitizer. I would like to HTML encode everything except for the <p> tag after sanitize, just in case. Any suggestion? I'm only accepting images as attachment as I said above, any security risk I have to take into account in relation to the attachment? Thanks!

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  • Canvas - @font-face doesn't work on IE9+

    - by iMoses
    I've created a widget which allows the user to locate free-text over an image using a textarea. When saving the image a background canvas application reads the text and calculates its position, then it draws the text to the canvas over the image and saves a new image file. The font I use for this widget is league-gothic which I am importing using the @font-face method. This seems to work great and without any issues on all browsers except (of-course) for IE9 and IE10. When using internet explorer you can clearly see that the font was indeed loaded since the textarea uses the same font, but when trying to draw the text onto the canvas the font-family reverts to one of its fallback, in this case Arial. I've searched quite a bit and found nothing. Unlike most font issues I found that concern the canvas element, I am completely sure that the font has indeed loaded as I am viewing it before saving the result. Anything at all will help me at the moment. If you have any insight, experience with similar bugs or whatever, please share :) Thanks in advance. P.S. I can't expose a code example at the moment, but if it becomes a problem I'll do my best to provide one.

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  • SQL query select from table and group on other column...

    - by scaryjones
    I'm phrasing the question title poorly as I'm not sure what to call what I'm trying to do but it really should be simple. I've a link / join table with two ID columns. I want to run a check before saving new rows to the table. The user can save attributes through a webpage but I need to check that the same combination doesn't exist before saving it. With one record it's easy as obviously you just check if that attributeId is already in the table, if it is don't allow them to save it again. However, if the user chooses a combination of that attribute and another one then they should be allowed to save it. Here's an image of what I mean: So if a user now tried to save an attribute with ID of 1 it will stop them, but I need it to also stop them if they tried ID's of 1, 10 so long as both 1 and 10 had the same productAttributeId. I'm confusing this in my explanation but I'm hoping the image will clarify what I need to do. This should be simple so I presume I'm missing something.

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  • How to improve my software project's speed?

    - by Blitzkr1eg
    I'm doing a school software project with my class mates in Java. We store the info on a remote db. When we start the application we pull all the information from the database and transform it into objects to use in our application (using java sql statemens). In the application we edit some of these objects and then when we exit the application we save or update information in the database using Hibernate. As you see we dont use Hibernate for pulling in information, we use it just for saving and updating. We have 2, but very similar problems. The loading of object(when we start the app) and the saving of objects(with Hibernate) in the db(when closing the app) is taking too much time. And our project its not a huge enterprise application, its a quite small app, we just manage some students, teachers, homeworks and tests. So our db is also very very small. How could we increase performance ? later edit: if we use a local database it runs very quick, it just runs slow on remote databases

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  • Prepping a conference

    - by Laurent Bugnion
    I have had the chance to talk at many conferences these past few years, and came up with a way to prepare them which works really well for me. Most importantly, it would make it quite easy to overcome an emergency (for example if my laptop would suddenly lose data). The whole code as well as the slides and other documents are in the cloud. I also use source control for my demos, so that I always have the latest and the greatest, but also a history of changes I made to my demos. Finally I have a system of code snippets which works great, and I often had very positive remarks from the audience regarding that. Putting everything in the cloud The one thing I used to be the most scared of was a sudden crash of my laptop, and being unable to restore in time for a conference. Most conferences ask speakers to send slides a few days (or weeks…) in advance, but let's face it, we all have last minute changes to our talks and I always come in the conference with updated slides that I pass to the management team. The answer to that dilemma used to be working off memory sticks, and that worked not bad. However last year I started putting all the documents relating to a conference in a DropBox folder, and that works great too. Obviously DropBox works only if you have connectivity, so if I for instance update slides while on an international flight, I cannot save to the cloud. The obvious answer to that is to backup everything on a memory stick… but I have to admit, I have been trusting my luck and working off my laptop HD and then synching everything to the cloud after landing. Of course on some US national flights you get WiFi on board, so in that case it is even simpler :) Usually after the conference is done, I remove the files from DropBox and copy them to their "final destination". They are backed up from there to BackBlaze, the great online backup service I am using routinely (I currently have about 90GB of data in BackBlaze). Outlining the presentations I like to have a written outline of my presentations written somewhere. I keep it simple, just write the various sections of the presentation with timing. I guess it is a remnant of the time when I was a private pilot, and using checklists for flight preparation. For example: Demo about designability 15' (0:37) Switch to Blend Open MainPage.xaml Create a DataTemplate ... Here I can immediately see during the presentation if I am taking too much time for my demo (0:37 is where I need to be when I am done with this section of the presentation, and 15' is the time that this particular section takes). I keep these sections reasonable, I don't detail every step of the preparation. Typically I have one such section for every 10-15 minutes of my talks. Yes, I am timing my presentations. I keep adjusting these numbers when I rehearse, and this really helps to feel more confident during the presentations. This is especially important for presentations that are long, like my MIX11 demo which clocked at 57 minutes (I had a lot of stuff to show…). Such presentations are risky, because if anything goes wrong, you will have to cut stuff, so the answer to that is: Rehearse, rehearse and when you're done rehearsing, rehearse a little more. I also have a "Preparation" section where I outline what I need to do before a presentation. For instance: Preparation Reboot in VHD Make sure MSN and Twitter are not running. Open VS10 and load demo Open Blend and load demo Run the WP7 emulator ... I typically start preparing my laptop an hour before the talk, starting everything I need to start and then putting my laptop to sleep. Saving and printing the outline, Timing Printing is a real problem because it is really hard to find a printer at most conference venues, and also quite hard in hotels. To solve that, I simply write everything in OneNote (synched to the cloud, now you start to know what I like ;) and then I print it to a PDF (I use CutePDFWriter) that I save to my Kindle. During the presentation, I read the outline off the Kindle (I mostly just need a quick check to see how I am timing). For timing during the presentation, I use the free tool ChronoGPS on my Windows Phone 7, but of course any phone these days has a clock/chrono application. In some conferences, they even have timers that the presenters can see, but they tend to count down and I prefer to count up… so I just use my own :) Source control for demos For demos, I create a separate folder and use Mercurial as source control. Mercurial has the huge advantage (over SVN or TFS) to work offline too, so I can commit while on a plane, and all the history is saved. Then when I have connectivity I push everything to the cloud (I am using the fantastic Trunksapp.com for my private repositories). Here too the obvious downside is the risk of losing my last changes if my laptop crashes before I can push to the cloud, and here too the obvious answer would be to work from a memory stick… though I have to admit I didn't do that lately (except when I was writing Silverlight 4 Unleashed, where I was really paranoid…) And code snippets? I am one of these presenters who hates to type in front of an audience. I can type really fast (writing two books has this advantage, it really teaches you to touch type and be fast at it) but in the context of an audience, on a stage where it is often damn cold (an issue I had a lot in past conferences, air conditioning can freeze your fingers and make it really hard to type), it doesn't work as well. I don't know for you, but I really dislike seeing a presentation where the speaker uses the backspace key more often than others ;) To solve that, I like to have my code ready in snippets, and drag them to the screen. Then I can spend time explaining each code snippet, while highlighting portions of the code (always highlight what you talk about, the audience often doesn't even see the cursor and doesn't know where you are on the screen!) Over the years I have used various solutions for code snippets, and now I have one which works really well… if you take a few precautions! I use the Visual Studio Toolbox. Preparing the code snippets You can store code snippets in the Toolbox for anything, XAML, C# etc. I arrange the snippets in the order in which I need them, which is a great way to remember what comes next in the presentation. I also separate them by topic, to make it easier to find them, for example when I switch to the slides and then back to the code. Remember that no matter how experienced you are, you will feel more nervous on stage than while you are preparing, so any way to make it easier for you is going to be beneficial to the audience. To store a code snippet, I do the following: Open the final demo that you want to show to the audience in Visual Studio. In your code, select a snippet of code that you want to explain in particular. Make sure that the Visual Studio Toolbox is open (menu View, Toolbox or Ctrl-Alt-X). Drag the selected snippet from the code window to the toolbox. (if needed) drag the snippet to the correct location (for example between two other code snippets so that you can access it as you speak through the demo). Right click on the snippet and select Rename Item from the context menu. Select a meaningful name. For me I use the following conventions: If it is a method, I use the method's name. If it is not a whole method, I use a descriptive name. If it is the content of a method (i.e. the body only, without the method's signature), I use "-> MethodName". This reminds me during the presentation that this is only the body, and that I need to insert that into an existing signature. This is the case, for instance, when I use Visual Studio to automatically generate the members of an interface’s implementation; then I only need to insert my snippet inside the generated method body. Saving the snippets This is the most important!! It happened to me a few times that VS10 lost its settings. When that happens, the snippets are lost too! Yeah that really sucks, especially (as it happened once) when this is the case about an hour before a talk… Stress and sweat follows, not good conditions to start a talk in front of an audience believe me. Thankfully, saving snippets is really easy with the following steps: Select the menu Tools, Import and Export Settings. Select Export selected environment settings and press Next. Uncheck All Settings. Then expand General Settings and select Toolbox (only!). Press Next. Select your source control folder and save under a meaningful name (for instance Snippets.vssettings). Commit to source control and push to the cloud. By the way, this also has the advantage of applying source control to the snippets file (which is an XML file), so you get history for free on that file! Reimporting the snippets If VS loses its settings and you need to reimport the snippets, this can be done super easily and very fast. Make sure that the Toolbox is empty. When you import snippets, they are merged with existing ones, they do not replace the content of the Toolbox. Unless merging is really what you want, make sure that your Toolbox is clean before you import, it is really easier. Select the menu Tools, Import and Export Settings. Select Import selected environment settings and press Next. Select No, just import new settings and press Next. Press Browse and select the Snippets.vssettings file. Press Finish. Et voila, all your snippets appear again in the Toolbox. Whew, the worst was averted and you can start your demo without sweating! (I had to do that once literally 5 minutes before the start of a demo, while my laptop was already hooked to the projector, and it went just fine). What about special tools? When using special tools (for example beta versions of tools you have an early access to), or a special configuration of your laptop, things can get tricky because you cannot really be sure that you will get a laptop with the same tools and the same configuration at the conference. To solve that, I use the following precautions: I make my demos from a Virtual Hard Disk. The great John Papa made a very easy-to-follow web page where he explains how to create a VHD and install Win7 to it. This gives you the full power of your laptop (as fast as booting from the metal). For me, I have a basic configuration that I saved on a USB harddrive (Win7 plus drivers, basic settings for desktop, folder options, taskbar etc) and Visual Studio 2010 SP1 on it. When preparing, I start by copying this "basis VHD" to my laptop. I install additional tools and configurations. I save the VHD back to the USB harddrive in a different folder. This would allow me to reinstall my demo environment quite fast, for example in case of harddrive failure. Replace the harddrive, copy the VHD to it, configure the BCD and you can start. Unfortunately this only works if the laptop itself still works. In the worst case of total failure, my security is to back all the installers up: The installers I use are synched on all my laptops and backed up to BackBlaze. If the worst happens and my laptop is absolutely broken, I can download the installer from BackBlaze and install on another laptop. This of course takes some time, and if that happens 5 minutes before a presentation, well… I don't have an answer to that, except of course crossing my fingers. Still, all that gives me additional security. Conclusion Remember folks, talking to an audience, large or small, will make you nervous. Just ask Scott Hanselman :) The goal here is to create the best possible conditions for you, and to create an environment where everything is saved and easy to restore, where everything is well known and provides you with additional confidence. The cooler you feel before the presentation (and during ;)), the better your presentation will be. Here too, the goal is to provide the best user experience you can have, which in turn will make it more enjoyable for your audience! Happy presenting :) Laurent   Laurent Bugnion (GalaSoft) Subscribe | Twitter | Facebook | Flickr | LinkedIn

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  • Compat Wireless Drivers Centrino N-2230

    - by user2699451
    So I am using linux and am having trouble installing the Compat Wireless drivers Hardware: Intel Centrino N-2230 OS: Linux Mint 64bit (kernel 13.08-generic) I followed this link http://www.mathyvanhoef.com/2012/09/compat-wireless-injection-patch-for.html Output: apt-get install linux-headers-$(uname -r) Reading package lists... Done Building dependency tree Reading state information... Done linux-headers-3.8.0-19-generic is already the newest version. 0 upgraded, 0 newly installed, 0 to remove and 19 not upgraded. charles-W55xEU compat-wireless-2010-10-16 # cd ~ charles-W55xEU ~ # dir adt-bundle-linux-x86_64-20130917.zip Desktop known_hosts_backup charles-W55xEU ~ # wget http://www.orbit-lab.org/kernel/compat-wireless-3-stable/v3.6/compat-wireless-3.6.2-1-snp.tar.bz2 --2013-10-29 10:28:23-- http://www.orbit-lab.org/kernel/compat-wireless-3-stable/v3.6/compat-wireless-3.6.2-1-snp.tar.bz2 Resolving www.orbit-lab.org (www.orbit-lab.org)... 128.6.192.131 Connecting to www.orbit-lab.org (www.orbit-lab.org)|128.6.192.131|:80... connected. HTTP request sent, awaiting response... 200 OK Length: 4443700 (4,2M) [application/x-bzip2] Saving to: ‘compat-wireless-3.6.2-1-snp.tar.bz2’ 100%[======================================>] 4 443 700 13,5KB/s in 11m 3s 2013-10-29 10:39:27 (6,55 KB/s) - ‘compat-wireless-3.6.2-1-snp.tar.bz2’ saved [4443700/4443700] charles-W55xEU ~ # tar -xf compat-wireless-3.6.2-1-snp.tar.bz2 charles-W55xEU ~ # cd compat-wireless-3.6-rc6-1 bash: cd: compat-wireless-3.6-rc6-1: No such file or directory charles-W55xEU ~ # dir adt-bundle-linux-x86_64-20130917.zip Desktop compat-wireless-3.6.2-1-snp known_hosts_backup compat-wireless-3.6.2-1-snp.tar.bz2 charles-W55xEU ~ # cd compat-wireless-3.6.2-1-snp/ charles-W55xEU compat-wireless-3.6.2-1-snp # dir code-metrics.txt defconfigs linux-next-pending pending-stable compat drivers MAINTAINERS README config.mk enable-older-kernels Makefile scripts COPYRIGHT include net udev crap linux-next-cherry-picks patches charles-W55xEU compat-wireless-3.6.2-1-snp # wget http://patches.aircrack-ng.org/mac80211.compat08082009.wl_frag+ack_v1.patch --2013-10-29 10:40:52-- http://patches.aircrack-ng.org/mac80211.compat08082009.wl_frag+ack_v1.patch Resolving patches.aircrack-ng.org (patches.aircrack-ng.org)... 213.186.33.2, 2001:41d0:1:1b00:213:186:33:2 Connecting to patches.aircrack-ng.org (patches.aircrack-ng.org)|213.186.33.2|:80... connected. HTTP request sent, awaiting response... 200 OK Length: 1049 (1,0K) [text/plain] Saving to: ‘mac80211.compat08082009.wl_frag+ack_v1.patch’ 100%[======================================>] 1 049 --.-K/s in 0s 2013-10-29 10:40:56 (180 MB/s) - ‘mac80211.compat08082009.wl_frag+ack_v1.patch’ saved [1049/1049] charles-W55xEU compat-wireless-3.6.2-1-snp # patch -p1 < mac80211.compat08082009.wl_frag+ack_v1.patch patching file net/mac80211/tx.c Hunk #1 succeeded at 792 (offset 115 lines). charles-W55xEU compat-wireless-3.6.2-1-snp # wget -Ocompatwireless_chan_qos_frag.patch http://pastie.textmate.org/pastes/4882675/download --2013-10-29 10:43:18-- http://pastie.textmate.org/pastes/4882675/download Resolving pastie.textmate.org (pastie.textmate.org)... 178.79.137.125 Connecting to pastie.textmate.org (pastie.textmate.org)|178.79.137.125|:80... connected. HTTP request sent, awaiting response... 301 Moved Permanently Location: http://pastie.org/pastes/4882675/download [following] --2013-10-29 10:43:20-- http://pastie.org/pastes/4882675/download Resolving pastie.org (pastie.org)... 96.126.119.119 Connecting to pastie.org (pastie.org)|96.126.119.119|:80... connected. HTTP request sent, awaiting response... 200 OK Length: 2036 (2,0K) [application/octet-stream] Saving to: ‘compatwireless_chan_qos_frag.patch’ 100%[======================================>] 2 036 --.-K/s in 0,001s 2013-10-29 10:43:21 (3,35 MB/s) - ‘compatwireless_chan_qos_frag.patch’ saved [2036/2036] charles-W55xEU compat-wireless-3.6.2-1-snp # patch -p1 < compatwireless_chan_qos_frag.patch patching file drivers/net/wireless/rtl818x/rtl8187/dev.c patching file net/mac80211/tx.c Hunk #1 succeeded at 1495 (offset 8 lines). patching file net/wireless/chan.c charles-W55xEU compat-wireless-3.6.2-1-snp # make ./scripts/gen-compat-autoconf.sh /root/compat-wireless-3.6.2-1-snp/.config /root/compat-wireless-3.6.2-1-snp/config.mk > include/linux/compat_autoconf.h make -C /lib/modules/3.8.0-19-generic/build M=/root/compat-wireless-3.6.2-1-snp modules make[1]: Entering directory `/usr/src/linux-headers-3.8.0-19-generic' CC [M] /root/compat-wireless-3.6.2-1-snp/compat/main.o LD [M] /root/compat-wireless-3.6.2-1-snp/compat/compat.o CC [M] /root/compat-wireless-3.6.2-1-snp/drivers/bcma/main.o In file included from /root/compat-wireless-3.6.2-1-snp/include/linux/bcma/bcma.h:8:0, from /root/compat-wireless-3.6.2-1-snp/drivers/bcma/bcma_private.h:8, from /root/compat-wireless-3.6.2-1-snp/drivers/bcma/main.c:8: /root/compat-wireless-3.6.2-1-snp/include/linux/bcma/bcma_driver_pci.h:217:23: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘bcma_core_pci_init’ In file included from /root/compat-wireless-3.6.2-1-snp/include/linux/bcma/bcma.h:10:0, from /root/compat-wireless-3.6.2-1-snp/drivers/bcma/bcma_private.h:8, from /root/compat-wireless-3.6.2-1-snp/drivers/bcma/main.c:8: /root/compat-wireless-3.6.2-1-snp/include/linux/bcma/bcma_driver_gmac_cmn.h:95:23: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘bcma_core_gmac_cmn_init’ In file included from /root/compat-wireless-3.6.2-1-snp/drivers/bcma/main.c:8:0: /root/compat-wireless-3.6.2-1-snp/drivers/bcma/bcma_private.h:25:15: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘bcma_bus_register’ /root/compat-wireless-3.6.2-1-snp/drivers/bcma/main.c:152:15: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘bcma_bus_register’ /root/compat-wireless-3.6.2-1-snp/drivers/bcma/main.c:17:21: warning: ‘bcma_bus_next_num’ defined but not used [-Wunused-variable] /root/compat-wireless-3.6.2-1-snp/drivers/bcma/main.c:93:12: warning: ‘bcma_register_cores’ defined but not used [-Wunused-function] make[3]: *** [/root/compat-wireless-3.6.2-1-snp/drivers/bcma/main.o] Error 1 make[2]: *** [/root/compat-wireless-3.6.2-1-snp/drivers/bcma] Error 2 make[1]: *** [_module_/root/compat-wireless-3.6.2-1-snp] Error 2 make[1]: Leaving directory `/usr/src/linux-headers-3.8.0-19-generic' make: *** [modules] Error 2 charles-W55xEU compat-wireless-3.6.2-1-snp # make install Warning: You may or may not need to update your initframfs, you should if any of the modules installed are part of your initramfs. To add support for your distribution to do this automatically send a patch against ./scripts/update-initramfs. If your distribution does not require this send a patch against the '/usr/bin/lsb_release -i -s': LinuxMint tag for your distribution to avoid this warning. make -C /lib/modules/3.8.0-19-generic/build M=/root/compat-wireless-3.6.2-1-snp modules make[1]: Entering directory `/usr/src/linux-headers-3.8.0-19-generic' CC [M] /root/compat-wireless-3.6.2-1-snp/drivers/bcma/main.o In file included from /root/compat-wireless-3.6.2-1-snp/include/linux/bcma/bcma.h:8:0, from /root/compat-wireless-3.6.2-1-snp/drivers/bcma/bcma_private.h:8, from /root/compat-wireless-3.6.2-1-snp/drivers/bcma/main.c:8: /root/compat-wireless-3.6.2-1-snp/include/linux/bcma/bcma_driver_pci.h:217:23: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘bcma_core_pci_init’ In file included from /root/compat-wireless-3.6.2-1-snp/include/linux/bcma/bcma.h:10:0, from /root/compat-wireless-3.6.2-1-snp/drivers/bcma/bcma_private.h:8, from /root/compat-wireless-3.6.2-1-snp/drivers/bcma/main.c:8: /root/compat-wireless-3.6.2-1-snp/include/linux/bcma/bcma_driver_gmac_cmn.h:95:23: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘bcma_core_gmac_cmn_init’ In file included from /root/compat-wireless-3.6.2-1-snp/drivers/bcma/main.c:8:0: /root/compat-wireless-3.6.2-1-snp/drivers/bcma/bcma_private.h:25:15: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘bcma_bus_register’ /root/compat-wireless-3.6.2-1-snp/drivers/bcma/main.c:152:15: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘bcma_bus_register’ /root/compat-wireless-3.6.2-1-snp/drivers/bcma/main.c:17:21: warning: ‘bcma_bus_next_num’ defined but not used [-Wunused-variable] /root/compat-wireless-3.6.2-1-snp/drivers/bcma/main.c:93:12: warning: ‘bcma_register_cores’ defined but not used [-Wunused-function] make[3]: *** [/root/compat-wireless-3.6.2-1-snp/drivers/bcma/main.o] Error 1 make[2]: *** [/root/compat-wireless-3.6.2-1-snp/drivers/bcma] Error 2 make[1]: *** [_module_/root/compat-wireless-3.6.2-1-snp] Error 2 make[1]: Leaving directory `/usr/src/linux-headers-3.8.0-19-generic' make: *** [modules] Error 2 charles-W55xEU compat-wireless-3.6.2-1-snp # It keeps giving errors, same with other sites, I get the same errors??? I am lost, help needed

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  • Downloading image from Picasa Web Albums loses metadata

    - by Jarrod
    I have several photos on my Picasa Web Albums account. I have added captions, tags and location information to many of them through the PWA web interface. I assumed that PWA was saving this information in an IPTC, or some other metadata tag inside the image, but whenever I go to 'Download Photo' (on a single image), the resulting image, when saved to my computer, has no tags whatsoever. Does anybody know why this is the case? Does PWA require Picasa to be installed to preserve this information?

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  • Save Remote SSL Certificate via Linux Command Line

    - by Jim
    Can you think of any linux command-line method for saving the certificate presented by a HTTPS server? Something along the lines of having curl/wget/openssl make a SSL connection and save the cert rather than the HTTP response content. The gui equivalent to what I'm looking for would be to browse to the HTTPS site, double-click on the browser "secure site" icon, and export the cert. Except the goal here is to do it non-interactively. Thanks, Jim

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  • How to Setup Java Application

    - by Ari
    I have a 'desktop' java application which is in the form of a jar file. How can I: Store this application on a single server. Grant access via Terminal Services to a specific OU to run this application from the central location. Disallow the copying or moving of the application (jar file) to any other location. Allow the saving/copying/moving of the output of the application on an authorized user's local drive. Thanks.

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