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  • c# winforms - scrollable panel with rectangles

    - by Peanut
    Hi, I'm new to winforms and have tried to track down an answer to the following with no luck ... I have a panel in winforms and add to it a Rectangle that is wider than the panel itself. I've set the panel AutoScroll property to true however the panels horizontal scrollbar never appears. Why is this? And how do I get the scrollbar to scroll? Here is my code to add the rectangle: private void panel1_Paint(object sender, PaintEventArgs e) { Graphics g = e.Graphics; Rectangle rec = new Rectangle(2, 2, 400, 40); g.DrawRectangle(new Pen(Color.Black), rec); g.FillRectangle(new SolidBrush(Color.Blue), rec); } If I add a Label control to the panel and give it a text value that will go beyond the bounds of the panel - then the autoscroll works, but just not for a rectangle. Many thanks.

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  • Algorithm on trajectory analysis.

    - by Arman
    Hello, I would like to analyse the trajectory data based on given templates. I need to stack the similar trajectories together. The data is a set of coordinates xy,xy,xy and the templates are again the lines defined by the set of control points. I don't know to what direction to go, maybe to Neural Networks or pattern recognition? Could you please advace me page, book or library to start with? kind regards Arman. PS. Is it the right place to ask the question?

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  • Query for props list with or without values

    - by vitto
    Hi, I'm trying to make a SELECT on three relational tables like these ones: table_materials -> material_id - material_name table_props -> prop_id - prop_name table_materials_props - row_id -> material_id -> prop_id - prop_value On my page, I'd like to get a result like this one but i have some problem with the query: material prop A prop B prop C prop D prop E wood 350 NULL NULL 84 16 iron NULL 17 NULL NULL 201 copper 548 285 99 NULL NULL so the query should return something like: material prop_name prop_value wood prop A 350 wood prop B NULL wood prop C NULL wood prop D 84 wood prop E 16 // and go on with others rows i thought to use something like: SELECT * FROM table_materials AS m INNER JOIN table_materials_props AS mp ON m.material_id = mp.material_id INNER JOIN table_materials_props AS p ON mp.prop_id = p.prop_id ORDER BY p.prop_name the problem is the query doesn't return the NULL values, and I need the same prop order for all the materials regardless of prop values are NULL or not I hope this example is clear!

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  • SQL server virtual memory usage and performance

    - by user365035
    Hello, I have a very large DB used mostly for analytics. The performance overall is very sluggish. I just noticed that when running the query below, the amount of virtual memory used greatly exceeds the amount of physical memory available. Currently, physical memory is 10GB (10238k bytes) whereas the virtual memory returns significantly more - 8388607k bytes. That seems really wrong, but I'm at a bit of a loss on how to proceed. USE [master]; GO select cpu_count , hyperthread_ratio , physical_memory_in_bytes / 1048576 as 'mem_MB' , virtual_memory_in_bytes / 1048576 as 'virtual_mem_MB' , max_workers_count , os_error_mode , os_priority_class from sys.dm_os_sys_info

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  • Many RewriteBase in one .htaccess file?

    - by Martti Laine
    Hello I have a domain and a wordpress-blog on same server. Now I have a problem (surprise). The wordpress is located on /httpdocs/blog/ and domain is pointing to /httpdocs/ and I'm trying to redirect it to /httpdocs/domain/. But, obvisiously, I have permalinks in Wordpress. Here's my current .htaccess: RewriteEngine On RewriteBase /blog/ RewriteCond %{REQUEST_FILENAME} !-f RewriteCond %{REQUEST_FILENAME} !-d RewriteRule . /blog/index.php [L] RewriteBase / RewriteCond %{HTTP_HOST} domain.com RewriteCond %{REQUEST_URI} !^/domain RewriteCond %{REQUEST_URI} !^/cgi-bin RewriteRule ^(.*)$ domain/$1 [L] But as you already propably assumed, this doesn't work. Wordpress' permalinks affects to /domain/ also, so my images and other urls go wrong. Any advice? Is it possible to use RewriteBase like this? Martti Laine

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  • Can't debug code using VS 2010 beta 2

    - by Nathan W
    This is really strange and I can't seem to figure out why it won't work. I have a C# dll that is a add on for another program, the main program is not mine or a .Net app so I am starting it with Start external program in the debugging tab and and passing my program as a command line and the program starts and loads my add on however my Visual Studio debugger doesn't step into the debugger and won't hit my break points. I checked the module window and it's not even loaded in there, I used process explorer and had a look at main program and my dll was loaded into the main app. The project is set to debug, symbols to full and still nothing. I created the project in VS 2008 and it worked fine and am now trying to get this to work in VS 2010 and no go. Anyone know what could be causing this?

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  • How Can I List a TDictionary in Alphabetical Order by Key in Delphi 2009?

    - by lkessler
    How can I use a TEnumerator to go through my TDictionary in sorted order by key? I've got something like this: var Dic: TDictionary<string, string>; begin Dic := TDictionary<string, string>.create; Dic.Add('Tired', 'I have been working on this too long'); Dic.Add('Early', 'It is too early in the morning to be working on this'); Dic.Add('HelpMe', 'I need some help'); Dic.Add('Dumb', 'Yes I know this example is dumb'); { The following is what I don't know how to do } for each string1 (ordered by string1) in Dic do some processing with the current Dic element Dic.Free; end; So I would like to process my dictionary in the order: Dumb, Early, HelpMe, Tired. Unfortunately the Delphi help is very minimal in describing how TEnumerator works and gives no examples that I can find. There is also very little written on the web about using Enumerators with Generics in Delphi.

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  • Posting a textarea form with cURL

    - by Joey
    How would I go about posting a textarea form? <form method="post" action="/user/test/shoutbox/add" id="shoutPost" class="clearit"> <input name="formtoken" type="hidden" value="852f8fde54190fa5f9aa47172d492f829c1b"/> <input type="hidden" name="backto" value="/user/text/shoutbox" /> <textarea id="shoutmsg" name="message"></textarea> <input type="submit" name="submit" class="confirmButton" value="Post" id="sbPost" /> This should work right? curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1); curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); curl_setopt ($ch, CURLOPT_POST, 1); $postfields .= "&message=".$msg; $postfields .= "&submit=sbPost"; curl_setopt($ch, CURLOPT_POSTFIELDS,$postfields); curl_setopt ($ch, CURLOPT_FOLLOWLOCATION, 1); $page = curl_exec($ch); but it's not posting for some reason...

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  • Blogger (Python) API: How do I retrieve a post by post ID?

    - by larsks
    Having previously obtained a post ID from a call to gdata.blogger.client.add_post()... post = client.add_post(...) post_id = post.get_post_id() ...how do I use that post id to retrieve the post in the future? I thought maybe gdata.blogger.client.Query would be the way to go, but this doesn't support post id as a query term. The example code distributed with the Python gdata module doesn't have an example of this use case, and after poking around gdata.blogger.client.* for a while I'm not making much progress. I could obviously iterate through all the posts in the blog until find the one with the corresponding id, but that would be a terrible, terrible idea.

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  • Back again to use Rails 2.3.5 from Rails 3

    - by dreame4
    Hi, Recently, I had seen information about Rails 3.0 beta and I had wanted to trial it. So I used gem update and installed this version. But now, I need to go back to Rails 2.3.5. How could I do it? I was thinking about this two solutions: Uninstalling Rails 3. I read that somebody removed Rails 3 by using gem uninstall but he came across some problems then. Did anyone try to remove it in this way? Using different versions Rails at the same time. Is it possible at all? It will resolve all my problems but I could find nothing about this issue in google. Hope somebody could help me :) Greetings, dreame4

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  • javascript form validation in rails?

    - by Elliot
    Hey guys, I was wondering how to go about form validation in rails. Specifically, here is what I'm trying to do: The form lets the user select an item from a drop down menu, and then enter a number along with it. Using RJS, the record instantly shows up in a table below the form. Resetting the form with AJAX isn't a problem. The issue is, I don't want the person to be able to select the same item from that drop down menu twice (in 1 day at least). Without using ajax, this isn't a problem (as I have a function for the select statement currently), but now that the page isn't reloading, I need a way to make sure people cant add the same item twice in one day. That said, is there a way to use some javascript/ajax validation to make sure the same record hasn't been submitted during that day, before a duplicate can be created? Thanks in advance! Elliot

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  • Firefox doesn't show my CSS

    - by vtortola
    Hi, I have a strange problem, Firefox doesn't show the CSS of the page I'm doing, but Internet Explorer does. I have tried at home and at one of my friend's home, and it happens in both. But, if I go to the Firefox Web Developer toolbar (i have it installed) and select CSS=Edit CSS, then the styles appears appears in the page and in the editor! As soon I close it, they disappears again. I have no idea what the problem is :( Do you have any idea about what could be the problem? thanks in advance.

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  • Showing HTML comment strings (<!-- -->) in HTML files

    - by Andrei
    Hello all. I'm building a source code search engine, and I'm returning the results on a HTML page (aspx to be exact, but the view logic is in HTML). When someone searches a string, I also return the whole line of code where this string can be found in a file. However, some lines of code come from HTML/aspx files and these lines contain HTML specific comments (). When I try to print this line on the HTML page, it interprets it as a comment and does not show it on the screen....how should I go about solving this so that it actually shows up? Any help would be welcomed. Thanks. edit: err...i see now that firebug could help me with this: <!-- -->

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  • search array and get array key

    - by SoulieBaby
    Hi all, I have an array, which I'd like to search for a value in and retreive the array key if it exists, but not sure how to even go about doing that. Here's my array: Array ( [hours] => Array ( [0] => 5 [1] => 5 [2] => 6 [3] => 6 [4] => 8 [5] => 10 ) ) So I'd like to search the hours array for 10, if 10 exists in the array, I want the key (5) to be returned. If that makes sense? Am trying to do it dynamically so the search string (10) will change, but I figure if I can get it working for number 10, I can get it working with a variable number :)

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  • JW Player: cross-browser "display:none" player behavior

    - by two7s_clash
    Is there a simple, upfront method to have FF and IE treat hidden JW Players the same? I am placing different instances of the player dynamically in jQuery generated tabs. In effect, switching tabs hides the parent div of each player. In FireFox, the tab switch and accompanying "display" change stops the player. This doesn't happen in IE. I would like it to. What is the easiest way to have both browsers act the same? I am hoping for a CSS/HTML solution, either thorough the way the players are embedded or a style rule Otherwise I suppose I will need to add an item listener that compares the currently selected tab id to currently active players... but I'd rather not go that route. Thanks for your tips! EDIT: So, I'd rather be able to change the player CSS or markup on tab change than send stop events to all the players but the player in the currently active tab.

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  • winsock compile error

    - by ioil
    The following errors are from a file with just windows and winsock2 included. C:\Users\ioil\Desktop\dm\bin>dmc sockit.c typedef struct fd_set { ^ C:\Users\ioil\Desktop\dm\bin\..\include\win32\WINSOCK2.H(85) : Error: 'fd_set' is already defined } fd_set; ^ C:\Users\ioil\Desktop\dm\bin\..\include\win32\WINSOCK2.H(88) : Error: identifier or '( declarator )' expected struct timeval { ^ C:\Users\ioil\Desktop\dm\bin\..\include\win32\WINSOCK2.H(129) : Error: 'timeval' is already defined }; ^ C:\Users\ioil\Desktop\dm\bin\..\include\win32\WINSOCK2.H(132) : Error: identifier or '( declarator )' expected struct hostent { ^ C:\Users\ioil\Desktop\dm\bin\..\include\win32\WINSOCK2.H(185) : Error: 'hostent' is already defined Fatal error: too many errors --- errorlevel 1 C:\Users\ioil\Desktop\dm\bin> What's already been tried : placing the winsock.dll file in the same directory as the compiler and program to be compiled, placing it in the system32 directory, and entering it in the registry with the regsrv32 command. Don't really know where to go from here, appreciate any advice . . .

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  • When should assertions stay in production code?

    - by Carl Seleborg
    Hi all, There's a discussion going on over at comp.lang.c++.moderated about whether or not assertions, which in C++ only exist in debug builds by default, should be kept in production code or not. Obviously, each project is unique, so my question here is not so much whether assertions should be kept, but in which cases this is recommendable/not a good idea. By assertion, I mean: A run-time check that tests a condition which, when false, reveals a bug in the software. A mechanism by which the program is halted (maybe after really minimal clean-up work). I'm not necessarily talking about C or C++. My own opinion is that if you're the programmer, but don't own the data (which is the case with most commercial desktop applications), you should keep them on, because a failing asssertion shows a bug, and you should not go on with a bug, with the risk of corrupting the user's data. This forces you to test strongly before you ship, and makes bugs more visible, thus easier to spot and fix. What's your opinion/experience? Cheers, Carl See related question here

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  • Svn log - svn: '.' is not a working copy

    - by fampinheiro
    I'm getting "svn: '.' is not a working copy" when i use the svn log command. I know that i need a working copy for the log command to work but can this be done directly on a repository? My goal is to display the information (change history) of a repository. I think updating the working copy whenever i need the log information is not a good solution. Is there an alternative solution to this or updating a working copy every time i need to log is the only way to go? Thanks in advance.

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  • Ruby from the command line - sticking - Windows

    - by tyndall
    I have seen this behavior on Windows with Ruby for a long time. If I install a gem sometimes the command line will just get "lost" and stop printing output until you go back to the command line and hit enter a few times. I notice this in other places too. Like starting up a Ruby on Rails console. Or generating a model with Rails. Have other people seen this? What causes this? The weird thing is this doesn't happen all the time. I have never seen this with PHP, Lua, Perl or Python from the command line. I have seen this on Vista and Windows 7 (32-bit and 64-bit). This happens on multiple machines.

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  • How do I edit a "ell in an MFC Listbox?

    - by Pedro
    I have CListBox control that has 2 columns and any number of rows. I want the user to be able to click(or maybe double-click) a "cell" and be able edit the text therein. link text (Can't post images yet, need +10). What I mean is that I want to be able to click and edit any of the places where it says "TEST" by clicking on the text to make it editable. How should I go about this? I suppose I should use a mouse click event but how would I make the cell editable?

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  • jabber based server and client application in cocoa

    - by Miraaj
    Hi all, I have implemented an application which supports text chat. Now I want to implement voice chat and later video chat in it, but I have less time provided by client :( So I am planning to go for some open source code in cocoa, which I can use and easily in-corporate in my application. After analysis over net I found that Jabber related client/ chat server application should be best according to my requirements. I have found that there are several jabber based client-server application but mostly written in java, C or C++. Can anyone suggest me some links or code for cocoa based, jabber server and client application?? Also I want to ask that lets say I got server application in C and client application in cocoa, then will I be able to transmit text, multimedia messages between client nodes?? Thanks, Miraaj

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  • How to determine direction of navigation from IE WebBrowser (IHtmlWindow2 or Javascript)

    - by Geoff Cox
    I'm uisng the WPF Web Browser control and when it fires the Navigating event, the event args always contain NavigationMode.New. It should be set to NavigationMode.Back if the user chooses to 'Go Back' from the web control. So its off to the COM ActiveX control underneath to determine the direction of navigation. I've been looking at IHtmlWindow2 and IHtmlDocument2 and IOmHistory, but don't see anything that happens on navigation to tell me if the navigation is caused by going back, forward, a new address, or a refresh. Since IHtmlWindow and Javascript have the same DOM, maybe someone knows how from Javascript. I've also been looking at the IWebBrowser2 interface, but can't find anything there either. Is there an event or property I need to inspect?

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  • Silverlight authentication during startup - how to mimic syncronous behavior?

    - by jkohlhepp
    I have a Silverlight app that is using the MVVM pattern. I have a WCF service which will allow me to authenticate users (I don't have direct control over that service - assume it is a black box that just returns me the user info and a list of privileges the user has). So, when the app starts up, I want to pull security data from that service. Right now, when I do this, my views and view models can end up getting initialized before the service returns with the security data. This causes problems because the view models need to disable buttons and make things visible/invisible based on the user having certain privileges. Is there a pattern that allows me to prevent the initialization of the views / view models until the WCF call has returned? How would you go about solving this problem as elegantly as possible?

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  • How get Android 2.1 SDK to recognize new class: SignalStrength

    - by Doughy
    The new Android 2.1 SDK (version 7) has a new class called SignalStrength: http://developer.android.com/reference/android/telephony/SignalStrength.html I updated my SDK in Eclipse to include the 2.1 add-on, and now I am trying to use this new class. However, when I go to do an import android.telephony.SignalStrength, it can't find it. Do I have to somehow reset my project to refresh the SDK so it knows about the new libraries? How can I get it to recognize this new class? Thanks.

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  • Comparing Clojure books

    - by Michiel Borkent
    Currently there is (afaik) one completed Clojure book available: Programming Clojure by Stuart Halloway. Two are being written and partially available at Manning: The Joy of Clojure by Fogus and Houser Clojure in Action by Amit Rathore Another one is about to be published in May: Practical Clojure (The Definitive Guide) by Luke Van der Hart Are these books more or less the same and meant as a general introduction to Clojure? Does it make sense to buy them all, or is there a risk of having three very similar books? Will there be books that go into more specialized areas of Clojure and targetted for 'intermediate' or 'advanced' Clojure programmers?

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