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Articles indexed Saturday January 15 2011

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• Trying to understand why VLANs need to be created on intermediate switches

  - by Jon Reeves

  I'm currently studying for the Cisco switching exam and having trouble understanding exactly how 802.1q tagging works. Given three daisy chained switches (A,B, and C) with trunk ports between them and VLAN 101 defined on both end switches (A and C), I'm not sure why the VLAN also needs to be defined on the middle one (B)? Note that I am not disputing that it does need to be configured, I'm just trying to understand why exactly. As I understand it, traffic from VLAN 101 on switch A will be tagged as it goes through the trunk to switch B. According to the documentation I have read, trunks will pass all VLANs by default, and the .1q tag is only removed when the frame leaves through an access port on the relevant VLAN. From this I would expect switch B to simply forward the tagged frame unchanged through the trunk to switch C. Can anyone shed some light on how switch B processes this frame and why it does not get forwarded through the other trunk ?

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• PostgreSQL 8.4 - Tablespace Optimization

  - by FloE

  I'm currently running a PostgreSQL Database with about 1.5 billion rows / 500 GB of data (including indices). There are several schemata: on for the (read only, irregular changes / updates) 'core-model' and one for every user (about 20 persons). The users can access the core and store data in their own schema, so everything is located in one database. The server runs with CentOS and PostgreSQL 8.4 and is used for scientific studies, exploration etc and is running quite well. These days an upgrade of the DB storage hard disks arrive - all with the same performance as the old ones. I'm looking for the best way to distribute the data on these disks. It would be possible to separate frequently used objects (the core-data) from the user schemata, but I'm not sure if this is really worth the effort. It seems to be a much better idea to move the WAL files (pg_xlog directory) to its own partition. http://www.postgresql.org/docs/8.4/static/wal-internals.html What are your opinions? Are there any tablespace- or partitioning-related performance documentations / benchmarks?

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• Laptop Brightness in Gnome and /proc - Thinkpad W510

  - by hakre

  I can set the brightness of my laptop screen already via /proc. I can read and change the value. Now I've set the value to 33 and then I went into gnome power management and enabled the option that it should reduce the backlight brightness being on battery. That works, the screen gets darker. If I now read out the current setting from /proc it still says it's 33. So I assume that there is another node in /proc to be used to control the brightness. The node I use so far is: /proc/acpi/video/VID/LCD0/brightness

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• Shortcut key for "Open file location" in Windows 7

  - by richardh

  I'm new to Windows (former Mac user) and using Windows 7 for about two months now. I almost exclusively use the taskbar to navigate to files (i.e., I press the Win/meta key and start typing... my libraries and naming conventions make it pretty easy to get the correct file). Then I press enter and the file opens. Awesome. But sometimes I want to see the file in its folder (i.e., maybe I want to rename, move, copy, etc.). To do this I need to mouse/trackpad over and right click to get the "Open in file location" options. Is there another way, short of searching for the folder name instead? Is there a hotkey/shortcut for "Open file location"? Thanks!

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• I do not have a degree but have 7 years of experience with ASP.NET, C#, can a institute offer me a degree?

  - by Asif

  Hi, I couldn't find time and money to study due to financial issues,however I managed to land some good jobs and projects and 2 multinational and my portfolio now has good clients on it too, however I still feel that I lack something important so was wondering if someone knows an college/university that offers degrees if you are a qualified professional, I'm also willing to study for few weeks if required.

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• Hangs up on install "Who are you" -- Dell Inspiron 1150 [closed]

  - by Writer595

  Possible Duplicate: Installer gets stuck with a grayed out forward button. I'm installing to a Dell Inspiron 1150 from a CD. I get to the window labeled "Who are you?," and enter info into all the fields. The prompt at the bottom says "Ready when you are..." The BACK button is available, but the FORWARD button is grayed out. I tried going BACK, and I tried reentering the info, and I tried restarting the install, but I can't get it past this screen.

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• Disk failure is imminent Laptop Hard drive ~5 months old

  - by Drew

  There's another post about this, but I don't have enough 'points' to say anything on that thread. So I'll start my own ... with more details! My computer still boots, but gnome domain reports problems with HDD smart. This has been confirmed in the bios as it makes me press f1 to boot up now. I tried running HDD disk check in the bios, but it fails running the tests. As in, running the tests failed not that the tests themselves indicated a failed drive. Here is what disk utility is reporting as failing: Reallocated Sector Count FAILING Normalized: 132 Worst: 132 Threshold: 140 Value: 544 Current Pending Sector Count WARNING Normalized: 200 Worst: 1 Threshold: 0 Value: 2 Is this related to the insane number of DRDY errors on the drive? kernel: [51345.233069] ata1.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 kernel: [51345.233076] ata1.00: BMDMA stat 0x4 kernel: [51345.233081] ata1.00: failed command: READ DMA kernel: [51345.233090] ata1.00: cmd c8/00:00:00:8b:4a/00:00:00:00:00/e0 tag 0 dma 131072 in kernel: [51345.233092] res 51/40:00:a8:8b:4a/10:04:00:00:00/e0 Emask 0x9 (media error) kernel: [51345.233097] ata1.00: status: { DRDY ERR } kernel: [51345.233103] ata1.00: error: { UNC } kernel: [51345.291929] ata1.00: configured for UDMA/100 kernel: [51345.291944] ata1: EH complete kernel: [51347.682748] ata1.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 kernel: [51347.682754] ata1.00: BMDMA stat 0x4 kernel: [51347.682759] ata1.00: failed command: READ DMA kernel: [51347.682768] ata1.00: cmd c8/00:00:00:8b:4a/00:00:00:00:00/e0 tag 0 dma 131072 in kernel: [51347.682770] res 51/40:00:a8:8b:4a/10:04:00:00:00/e0 Emask 0x9 (media error) kernel: [51347.682774] ata1.00: status: { DRDY ERR } kernel: [51347.682777] ata1.00: error: { UNC } Did Ubuntu 10.10 and/or EXT4 eat my work laptop? What steps can I take to backup my important information, which is probably the home folder. Please include steps to recover my data on the new hard drive as well. It does me little good to have backups I can't use.

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• Getting trayer to work with dual screen setup

  - by Ikke

  I'm using XMonad as my window manager, and want to use trayer as a icon panel for things like nm-applet. The problem was that the panel wouldn't appear on the top of the screen. If I set it to the bottom it just appeared. After a lot of trying, I found out it is because my xorg.conf is setup for dualscreens, and probably the trayer panel is spawned outside my view (I currently have only a single screen, but I switch a lot). After manualy tweaking the xorg.conf file to allow for just one screen, the panel appears on the right spot. These are the things I had to modify: Section "Monitor" Identifier "0-LVDS" Option "VendorName" "ATI Proprietary Driver" Option "ModelName" "Generic Autodetecting Monitor" Option "DPMS" "true" Option "PreferredMode" "1366x768" Option "TargetRefresh" "60" Option "Position" "0 0" # Was 1280 256 Option "Rotate" "normal" Option "Disable" "false" EndSection SubSection "Display" Viewport 0 0 Virtual 1366 768 # Was 2646 2646 Depth 24 EndSubSection The problem is ofcourse that I can't use my dual screen setup anymore. Is there a way to force trayer on the right position even with the dualscreen setup?

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• Resources for Game Development in iPhone for beginners [closed]

  - by Volatil3

  Possible Duplicate: What are the best iPhone game development resources? Hi I'm a programmer but I have never worked on Game programming so have no idea about OpenGL and all that. I am more interested to get into physics based games like Angry Birds and want to implement fewer ideas. Can you recommend me some good books which not only teach the concept of game programming but also practical implementation in iPhone platform? Thanks in advance

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• When using SELECT can you modify the value of a returned field based on other fields?

  - by user570759

  When using MySQL SELECT can you change the value of a returned field based on other fields? For example, if I have this select: SELECT city,state,country FROM table Now if city is empty AND state is empty, I want the value of country to returned empty as well (whether country actually has a value or not). Example table: id | city | state | country ----------------------------- 1 | Here | There | MyCountry 2 | | | YourCountry So with the above table, I want the results for id=1 to return Here,There,MyCountry but the results for id=2 should be empty,empty,empty Thanks

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• Modifying WPF listbox items container when using groupstyle

  - by rulestein

  I have a listbox that is grouping the items with a GroupStyle. I would like add a control at the bottom of the stackpanel that holds all of the groups. This additional control needs to be part of the scrolling content so that the user would scroll to the bottom of the list to see the control. If I were using a listbox without the groups, this task would be easy by modifying the ListBox template. However, with the items grouped, the ListBox template seems to only apply on a per group basis. I can modify the GroupStyle.Panel, but that doesn't allow me to add items to that panel. <----- I would like to add a control to this stackpanel

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• CSS and jQuery slider height/positioning question

  - by wilwaldon

  TEST SITE If you look at the example above the slider on the right has 2 images. The first one is smaller than the second. The second is around 500px high. What I'm looking to do is expand the slider vertically depending on the height of the images inside. I believe the js is setting the height of the image when it is called from the server and I can't find a way to override it with the CSS. Any help would be very appreciated. Thank you!

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• jQuery - Increase the value of a counter when a button is clicked

  - by Taimur

  Hi, I'm making a system where a user clicks a button and their score increases. There is a counter which I would like to increase the value of using jQuery (so that the page does not need to refresh) when the button is clicked. How would I go about this? <script type="text/javascript" src="http://code.jquery.com/jquery-1.4.3.min.js"></script> <script type="text/javascript"> $("#update").click(function() { $("#counter")++; } </script> #update is the button, #counter is the counter. In php, ++ increases something's value. What's the jQuery equivalent? Also, when the button is clicked, it needs to send a request which updates the score value in a mysql database as well, without the page refreshing. Does anyone know how I would do that? Thanks a lot UPDATE: I've tried a few of the methods below, but nothing seems to work! Do I need to change anything else for it to work? I've created a test page for it: <html> <body> <script type="text/javascript" src="http://code.jquery.com/jquery-1.4.3.min.js"></script> <script type="text/javascript"> var count = 0; $("#update").click(function() { count++; $("#counter").html("My current count is: "+count); } </script> <button id="update" type="button">Button</button> <div id="counter">1</div> </body> </htlm>

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• flip a 1bpp .bmp image horizontally

  - by user576844

  I am trying to write a program containing two source files: main program written in C and assembly(x86 32 and 64) module callable from C. The C declaration for the assembly routine looks like this: void mirrorbmp1(void *img, int width, int height) The task involves Mirror/flipping a 1 bpp .BMP image horizontally while Handling any image width properly, not only multiples of 8. I am new to assembly programming and have very little idea about how i should do the ask. Any help would be appreciated.

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• vim opens my folds on paste. how to prevent that ?

  - by Stefano Borini

  There's something weird going on in my fortran folding. This is the example file module foo contains subroutine hello() end subroutine hello subroutine hello() end subroutine subroutine hello() end subroutine end module foo subroutine hello() end subroutine subroutine hello() end subroutine subroutine hello() end subroutine and this is the vimrc syntax on au! BufRead,BufNewFile *.f90 setfiletype fortran set foldmethod=syntax let fortran_fold=1 The annoying thing is the following. If I cut (dd) and paste (P) a folded subroutine outside the module/end module block, the freshly pasted fold stay closed. If I paste it inside the module/end module block, the newly pasted folded region appears instead unfolded. Can you reproduce the issue (vim 7.2 here) and do you know any workaround/fix ?

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• Could DataGridView be this dumb? or its me?lol

  - by Selase

  Am trying to bind data to a dropdown list on pageload based on a condition. Code explains further below. public partial class AddExhibit : System.Web.UI.Page { string adminID, caseIDRetrieved; DataSet caseDataSet = new DataSet(); SqlDataAdapter caseSqlDataAdapter = new SqlDataAdapter(); string strConn = WebConfigurationManager.ConnectionStrings["CMSSQL3ConnectionString1"].ConnectionString; protected void Page_Load(object sender, EventArgs e) { adminID = Request.QueryString["adminID"]; caseIDRetrieved = Request.QueryString["caseID"]; if (caseIDRetrieved != null) { CaseIDDropDownList.Text = caseIDRetrieved; //CaseIDDropDownList.Enabled = false; } else { try { CreateDataSet(); DataView caseDataView = new DataView(caseDataSet.Tables[0]); CaseIDDropDownList.DataSource = caseDataView; CaseIDDropDownList.DataBind(); } catch (Exception ex) { string script = "<script>alert('" + ex.Message + "');</script>"; } } } The CreateDataset method that is called in the if..else statement is contains the following code. private void CreateDataSet() { SqlConnection caseConnection = new SqlConnection(strConn); caseSqlDataAdapter.SelectCommand = new SqlCommand("Select CaseID FROM Cases", caseConnection); caseSqlDataAdapter.Fill(caseDataSet); } However when i load the page and as usual the condition that is supposed to bid the data is met, the gridview decides to displays as follows... IS IT ME OR ITS THE DATAGRID?...??

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• The program fails to display `cout` when it is run

  - by Jeff - FL

  Hello, I justed started a C++ course & I wrote, compiled, debugged & ran my first program: // This program calculates how much a little league team spent last year to purchase new baseballs. #include <iostream> using namespace std; int baseballs; int cost; int total; int main() { baseballs, cost, total; // Get the number of baseballs were purchased. cout << "How many baseballs were purchased? "; cin >> baseballs; // Get the cost of baseballs purchased. cout << "What was the cost of each baseball purchased? "; cin >> cost; // Calculate the total. total = baseballs * cost; // Display the total. cout << "The total amount spent $" << total << endl; return 0; } The only probelm that I encountered was that when I ran the program it failed to display the total amount spent (cout). Could someone please explain why? Thanks Jeff H - Sarasota, FL

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• How to figure out why ssh session does not exit sometimes?

  - by WilliamKF

  I have a C++ application that uses ssh to summon a connection to the server. I find that sometimes the ssh session is left lying around long after the command to summon the server has exited. Looking at the Centos4 man page for ssh I see the following: The session terminates when the command or shell on the remote machine exits and all X11 and TCP/IP connections have been closed. The exit status of the remote program is returned as the exit status of ssh. I see that the command has exited, so I imagine not all the X11 and TCP/IP connections have been closed. How can I figure out which of these ssh is waiting for so that I can fix my summon command's C++ application to clean up whatever is being left behind that keeps the ssh open. I wonder why this failure only occurs some of the time and not on every invocation? It seems to occur approximately 50% of the time. What could my C++ application be leaving around to trigger this?

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• web design PSD to html -> more direct ways?

  - by Assembler

  At work I see one colleague designing a site in Photoshop/Fireworks, I see another taking this data, slicing it up and using Dreamweaver to rebuild the same from scratch. It seems like too much mucking around! I know that Photoshop can output a tables based HTML, and Fireworks will create divs with absolute positioning; neither appear to be very helpful. Admittedly, I haven't tried much of (DW/FW) (CS4/CS3) since becoming a programmer, so I don't know if new versions are addressing this work flow issue, but are we still double handling things? Can we attach some sort of layout metadata (this is a rollover button, this will be a SWF, this will be text, this logo will hide "xyz" <h1> text etc) to slices to aid in layout generation? are there some secret tools which assist in this conversion process? Or are we still restricted to doing things by hand? The frustration continues when said hand built page needs to be reworked again to fit Smarty Templates/Wordpress/generic CMS. I acknowledge that designers need to be free of systems to be able to do whatever, but most conventional sites have: a header with navigation a sidebar with more links the main content part maybe another sidebar a footer Given the similarity of a lot of components, shouldn't there be a more systematic approach to going from sliced designs to functional HTML? Or am I over-simplifying things? -edit- Mmmmm.... I suppose I will accept an answer, but they weren't really what I was looking for. It just seems like designing the DOM is a bit of holy grail ("It's only a model!"), and maybe with all the "groovy" things you can do with HTML and Javascript, it would be mighty hard work, but with a set of constraints (that 960 stuff looks interesting), some well designed reset style sheets and a bit of... fairy dust? we should be able to improve the work flow. Photoshop's tables by themselves are pretty much useless, I agree, but surely we can take this data, and then select a group of cells and say "right, this is a text div, overflow:auto" or "these cells are an image block, style it with the same height/width as the selected area". Admittedly here at work there are other elephants in the room that need to make their formal introductions to management, but some parts of the designpage workflow seem... uneducated at best.

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• Linux, GNU GCC, ld, version scripts and the ELF binary format -- How does it work??

  - by themoondothshine

  Hey all, I'm trying to learn more about library versioning in Linux and how to put it all to work. Here's the context: -- I have two versions of a dynamic library which expose the same set of interfaces, say libsome1.so and libsome2.so. -- An application is linked against libsome1.so. -- This application uses libdl.so to dynamically load another module, say libmagic.so. -- Now libmagic.so is linked against libsome2.so. Obviously, without using linker scripts to hide symbols in libmagic.so, at run-time all calls to interfaces in libsome2.so are resolved to libsome1.so. This can be confirmed by checking the value returned by libVersion() against the value of the macro LIB_VERSION. -- So I try next to compile and link libmagic.so with a linker script which hides all symbols except 3 which are defined in libmagic.so and are exported by it. This works... Or at least libVersion() and LIB_VERSION values match (and it reports version 2 not 1). -- However, when some data structures are serialized to disk, I noticed some corruption. In the application's directory if I delete libsome1.so and create a soft link in its place to point to libsome2.so, everything works as expected and the same corruption does not happen. I can't help but think that this may be caused due to some conflict in the run-time linker's resolution of symbols. I've tried many things, like trying to link libsome2.so so that all symbols are alised to symbol@@VER_2 (which I am still confused about because the command nm -CD libsome2.so still lists symbols as symbol and not symbol@@VER_2)... Nothing seems to work!!! Help!!!!!! Edit: I should have mentioned it earlier, but the app in question is Firefox, and libsome1.so is libsqlite3.so shipped with it. I don't quite have the option of recompiling them. Also, using version scripts to hide symbols seems to be the only solution right now. So what really happens when symbols are hidden? Do they become 'local' to the SO? Does rtld have no knowledge of their existence? What happens when an exported function refers to a hidden symbol?

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• How do you pronounce large hex numbers?

  - by warrenm

  This question might be subjective, but I'm hoping there's some consensus that I just don't know about. Short hex numbers are relatively easy to spell out (e.g., 0xC4A might be "cee-four-ay"). Hex numbers ending with a multiple of three zeros are likewise pretty easy (e.g., 0xC000 might be "cee-thousand"). But is there a concise way to pronounce 0xFFFF0000 or 0xCA000000? Magic numbers like 0xDEADBEEF are popular for their pronounceability, but I'm mostly asking about large-ish, round numbers that seem like they should have a more concise pronunciation.

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• Identifying individual values in a text box using Flash

  - by Jamash1989

  I want to identify specific strings in a text box from user input to add to a score variable, like so - if (userWords.text == firstWord) { score = score + 1; } The example given adds 1 to the score, but if a user adds a space then a second word the text box views it as a whole and not individual words, resulting in no values added to the score variable. The problem lies with the whole text box being viewed as one entire string. Instead, I want to split it up so word1 will add 1 to the score, word2 will add 1 to the score, etc. I am ultra confused with this problem, so thank you to anyone that may help.

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• Adding and removing elements efficiently from Collection object

  - by user569125

  Hi, Below coding is the working sample,but still i am not happy with this code with related to performancewise.Please have a look and let me know if any better approach is there.Thanks in advance. Adding items to the arraylist object String resultItems[] = paging.getMoveLeftArray().split(","); String fields[]={"id","name","name1"}; leftObj=new ArrayList(); for(int i=0;i<resultItems.length;i++){ //below line mea TestVO bean=new TestVO(); String resultItem = resultItems[i]; String idANDname[] = resultItem.split("@"); String id = idANDname[0]; // name or id should not contain "-" String name[] = idANDname[1].split("-"); //values and fileds are always having same length for(int j=0;j<name.length;j++) { PropertyUtils.setProperty(bean, fields[j], name[j]); } leftObj.add(bean); } Removing items from the arraylist object:availableList contains all the TestVO objects: String []removeArray=paging.getMoveRightArray().split(","); tempList=new CopyOnWriteArrayList(); newTempList=new CopyOnWriteArrayList(); for(int i=0;i<availableList.size();i++){ boolean flag = false; TestVO tempObj = (TestVO )availableList.get(i); int id =(Integer)tempObj.getId(); // System.out.println("id value"+id); // availableList.get(i).getClass().getField(name); for(int j=0;j<removeArray.length;j++){ String resultItem = removeArray[j]; String idandname[] = resultItem.split("@"); for(int k=0;k<idandname.length;k++){ String ids[]=idandname[0].split("-"); if(id==Integer.parseInt(ids[0])){ flag = true; break; } } } if(flag){ tempList.add(tempObj); } else{ newTempList.add(tempObj); }

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• Checkbox alignment in Internet Explorer, Firefox and Chrome

  - by Andrej

  Checkbox alignment with its label (i.e., vertical centering) cross different web browsers makes me crazy. Pasted below is standard html code: <label for="ch"><input id="ch" type="checkbox">My Checkbox</label> I tested different CSS tricks (e.g., link 1, link 2); most solutions works fine in FF, but are completely off in Chrome or IE8. I'm looking for any references or pointers to solve this issue. Thanks in advance. EDIT According to Elq suggestion I modified the HTML <div class="row"> <input type="checkbox" id="ch1" /> <label for="ch1">Test</label> </div> and CSS .row{ display: table-row; } label{ display: table-cell; vertical-align: middle; } Works now in Firefox, Internet Explorer 8, and Chrome on Windows. Fails on Firefox and Chrome on Linux. Also works in Firefox and Safari on Mac, but fails on Chrome.

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• UITextView doesn't not resize when keyboard appear if loaded from a tab bar cotroller

  - by elio.d

  I have a simple view controller (SecondViewController) used to manage a UITextview (I'm building a simple editor) this is the code of the SecondViewController.h @interface SecondViewController : UIViewController { IBOutlet UITextView *textView; } @property (nonatomic,retain) IBOutlet UITextView *textView; @end and this is the SecondViewController.m // // EditorViewController.m // Editor // // Created by elio d'antoni on 13/01/11. // Copyright 2011 none. All rights reserved. // @implementation SecondViewController @synthesize textView; /* // Implement loadView to create a view hierarchy programmatically, without using a nib. - (void)loadView { } */ // Implement viewDidLoad to do additional setup after loading the view, typically from a nib. - (void)viewDidLoad { [super viewDidLoad]; self.view.backgroundColor = [UIColor colorWithPatternImage:[UIImage imageNamed:@"uiViewBg.png"]]; textView.layer.borderWidth=1; textView.layer.cornerRadius=5; textView.layer.borderColor=[[UIColor darkGrayColor] CGColor]; [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardWillAppear:) name:UIKeyboardWillShowNotification object:nil]; [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardWillDisappear:) name:UIKeyboardWillHideNotification object:nil]; } -(void) matchAnimationTo:(NSDictionary *) userInfo { NSLog(@"match animation method"); [UIView setAnimationDuration:[[userInfo objectForKey:UIKeyboardAnimationDurationUserInfoKey] doubleValue]]; [UIView setAnimationCurve:[[userInfo objectForKey:UIKeyboardAnimationCurveUserInfoKey] intValue]]; } -(CGFloat) keyboardEndingFrameHeight:(NSDictionary *) userInfo { NSLog(@"keyboardEndingFrameHeight method"); CGRect keyboardEndingUncorrectedFrame = [[ userInfo objectForKey:UIKeyboardFrameEndUserInfoKey ] CGRectValue]; CGRect keyboardEndingFrame = [self.view convertRect:keyboardEndingUncorrectedFrame fromView:nil]; return keyboardEndingFrame.size.height; } -(CGRect) adjustFrameHeightBy:(CGFloat) change multipliedBy:(NSInteger) direction { NSLog(@"adjust method"); return CGRectMake(20, 57, self.textView.frame.size.width, self.textView.frame.size.height + change * direction); } -(void)keyboardWillAppear:(NSNotification *)notification { NSLog(@"keyboard appear"); [UIView beginAnimations:nil context:NULL]; [self matchAnimationTo:[notification userInfo]]; self.textView.frame = [self adjustFrameHeightBy:[self keyboardEndingFrameHeight: [notification userInfo]] multipliedBy:-1]; [UIView commitAnimations]; } -(void)keyboardWillDisappear:(NSNotification *) notification { NSLog(@"keyboard disappear"); [UIView beginAnimations:nil context:NULL]; [self matchAnimationTo:[notification userInfo]]; self.textView.frame = [self adjustFrameHeightBy:[self keyboardEndingFrameHeight: [notification userInfo]] multipliedBy:1]; [UIView commitAnimations]; } // Override to allow orientations other than the default portrait orientation. - (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation { return YES; } (void)didReceiveMemoryWarning { // Releases the view if it doesn't have a superview. [super didReceiveMemoryWarning]; // Release any cached data, images, etc that aren't in use. } (void)viewDidUnload { // Release any retained subviews of the main view. // e.g. self.myOutlet = nil; } (void)dealloc { [super dealloc]; } @end the problem is that if load the view controller from a tab bar controller the textView doesn't resize when the keyboard appear, but the SAME code works if loaded as a single view based app. I hope I was clear enough. I used the tabBar template provided by xcode no modifications.

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