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• Bring another processes Window to foreground when it has ShowInTaskbar = false

  - by Mongus Pong

  We only want one instance of our app running at any one time. So on start up it looks to see if the app is running and if it is, it calls SetForegroundWindow on the Main Window. This is all good and well ... for the most part.. When our app starts up it will show a Splash screen and a Logon form. Both of these forms have ShowInTaskBar = false. Because of this, if you try to start up another copy of the app when the Logon form is showing, that Logon form is not brought to the front! Especially as the user cant see anything in the taskbar as well, all they figure is that the app is duff and cannot start. There is no indication that there is another instance running. Is there any way around this problem?

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• I need to do a BASICE For Loop algorithm for a java Pyramid

  - by user1665119

  Question 2. USE THE FOR LOOP. Design and write an algorithm that will read a single positive number from the keyboard and will then print a pyramid out on the screen. The pyramid will need to be of a height equal in lines to the number inputted by the operator. Your program is not to test for negative numbers, nor is it to cater for them. For your test, use the number 7. If you would like to take the problem further, try 18 and watch what happens. Example input: 4 Example output: 1 121 12321 1234321

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• Setting many key/value pairs

  - by Andrew

  Hi, I'm working on a rake task which imports from a JSON feed into an ActiveRecord called Person. Person has quite a few attributes and rather than write lines of code for setting each attribute I'm trying different methods. The closest I've got is shown below. This works nicely as far as outputing to screen but when I check the values have actually been set on the ActiveRecord itself it's always nil. So it looks like I can't use .to_sym to solve my problem? Any suggestions? I should also mention that I'm just starting out with Ruby, have been doing quite a bit of Objective-c and now need to embrace the Interwebs :) http = Net::HTTP.new(url.host, url.port) http.read_timeout = 30 json = http.get(url.to_s).body parsed = JSON.parse(json) if parsed.has_key? 'code' updatePerson = Person.find_or_initialize_by_code(parsed['code']) puts updatePerson.code parsed.each do |key, value| puts "#{key} is #{value}" symkey = key.to_sym updatePerson[:symkey] = value.to_s updatePerson.save puts "#{key}....." # shows the current key puts updatePerson[:symkey] # shows the correct value puts updatePerson.first_name # a sample key, it's returning nil end

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• iPhone OpenGL Template is cheating?

  - by carrots

  XCode's OpenGL template seems to be cheating to solve this "stretched" viewport problem I've been trying to understand for the last 3 hours. In the iphone "OpenGL ES Application" template, the colorful square that bounces up and down on the screen is not really a square at all! ES1Renderer.m (the ES2 file as well) static const GLfloat squareVertices[] = { -0.5f, -0.33f, 0.5f, -0.33f, -0.5f, 0.33f, 0.5f, 0.33f, }; But it comes out looking square on the device/simulator due to the stretching/squashing effect of a non-square viewport. I tried to fix it by fiddling with glFrustumf() but that doesn't seem to change the aspect ratio. I was able to get things looking good (not-stretched) when I fed glViewport() with a 1:1 widht:height.. But this doesn't seem like the answer because it offsets the viewport placement. What's the right way to correct for this stretching and why doesn't XCode do it that way?

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• Floating child window in WPF

  - by Dusan Kocurek

  I want to create floating child window in .NET 3.0 WPF application. What I'm doing is: sideWindow = new SideWindow(this); sideWindow.Left = System.Windows.Forms.Screen.PrimaryScreen.Bounds.Width - sideWindow.Width; sideWindow.Top = 125; sideWindow.WindowStartupLocation = WindowStartupLocation.Manual; sideWindow.Owner = this; sideWindow.Show(); This is running fine except one customer. According to trace messages the window is created, but the client doesn't see it! Any idea about similar problems? Thank you very much.

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• How to make some simple GUI controls?

  - by daniels

  I need to make a DirectX or OpenGL app and i will need a custom GUI for that. I think a button, a input text box, a list box (that will need a scroll bar as there will be more items that can fit on the screen) and a slider control will be enough. I know about CeGUI framework but i just don't like it, way too many XML files for my taste. My question is where should i start in learning how to do this custom GUI controls, are there any tutorial available or any material that could get me started? I haven't done a GUI contol myself before.

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• Question regarding the use of iframes in Safari and Chrome's startup pages

  - by Wesley

  If you have ever used a new release of either Chrome or Safari, you know that when you add a new tab, the default screen is a grid like setup with your most favorite links sitting there waiting to be clicked on. What makes it even nicer is the graphical interface, with actual pictures of the websites they are representing. I am looking to do something similar, how is it done? Are they simply iframes? iframes set with css? If anyone has any knowledge about the actual implementation of this seemingly simple festure, please share!! Thanks

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• How to change TextView background color when touching in and out of view?

  - by MikeShiny

  This has to be a very simple fix, but I can't seem to figure it out. I have got my program to change the background color to change onClick, and onTouch with ACTION_DOWN and ACTION_UP. But I need it to change the color when touching the screen and going in and out of the TextView. I need it to function like a mouseOver/mouseOut event. Is there a way to do this on android? Or am I stuck with onTouch, where the action has to start from within the TextView? Right now I set the onTouch Listener on the textview itself. Should I set it somewhere else and then check if the x and y are within the Textview? Or is there another event listener I should be using? I am new to Android, any help would be appreciated. Thanks. Mike

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• Rails: How do I run a before_save only if certain conditions are met?

  - by Shpigford

  I have a before_save method that I call that renames an uploaded image. before_save :randomize_file_name def randomize_file_name extension = File.extname(screen_file_name).downcase key = ActiveSupport::SecureRandom.hex(8) self.screen.instance_write(:file_name, "#{key}#{extension}") end That method is part of my Item model. That works great when I create a new item or need to update the image associated with an item...but the problem is that if I need to update an item but NOT the image, the randomize_file_name method still gets run and renames the file in the database (though not the file itself, obviously). So, I'm thinking I need to figure out a way to only run randomize_file_name if a file is included in the form submission...but I'm not sure how to pull that off.

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• Creating a fancy search bar with Swing components

  - by Kavon Farvardin

  I'm trying to come up with an elegant recreation of the search bar component in Thunderbird. The clear button doesn't appear until there is text in the box, so that screen-shot is a bit inaccurate. Should I use a layered pane and get some buttons to float above the box? (but then getting the text to not appear below the buttons would be hacky) Maybe just put buttons at the ends of the search bar and have it somehow blend in? Any ideas or maybe a style reconsideration is welcome, thank you.

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• I can't get the MapsDemo that comes with "Google APIs by Google Inc, Android API8, revision 2" to work

  - by Hanspeter Adam

  I have tried everything according to instructions to get the MapsDemo to work on API8. I followed all the certificate signing instructions and all I get is a blank (blue) screen on the emulator. I see that people have been having the same issues but all the suggested solutions boil down to the certificate signing and that has not worked for me. One guy on the Internet even said he got it to work but never said how!!!! So, I thought I'd try the MapsDemo that comes with "Google APIs by Google Inc, Android API7, revision 1". There I saw the map come up on the emulator but only once. That one time it came up clearly and I was able to pan it but after exiting the app and trying it again, it no longer worked. Now all I get is some faint outlines that makes it look like it's trying to work but for some reason is not successful. I am running on Windows Vista Service Pack 2 and using Eclipse Helios. Please help, Hans

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• Drupal does not recognize my website has been installed

  - by Marcos Buarque

  After a successful Drupal install, I was trying to follow the security recommendations and reverted the settings.php file to 444 permissions (read, read, read). Then, all of a sudden, right after doing that, Drupal does not recognize the installation process was completed. It went back to the install screen. Worst of all. I did chmod back to 666 (write, write, write) but it does not work any more. When I move forward as if I was going to install Drupal again, he tells me he does not have permissions to create the files folder under sites/default... But since the installation has already been completed... the files folder is already there... I am puzzled... Could it be some sort of server caching? Since this is one of my first adventures with a Linux server, I am a bit confused. Any help appreciated... Thanks.

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• How to split Code for iOS 3.0 and iOS 3.2 so I can use MPMoviePlayerViewController if OS 3.2++

  - by Allisone

  I have a video that I play. To use full screen in iOS 3.2 I use the MPMoviePlayerViewController (seems to only work with that Class). But if I want to build for iOS 3.0 I obviously get several errors, because this class is not known in iOS 3.0. I also know how to get what I want with MPMoviePlayerController in iOS 3.0, but I can only have one, either the code for iOS 3.0 or the code for iOS 3.2. How to cope with that ? I guess I have to use multiple targets, do you have suggestions on how to do that (always when I tried multiple targets I got errors and gave up :) ) ?

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• Using Selenium to Determining The Visibility of Elements for Print media

  - by Tom Howard

  I would like to determine if particular elements on a page are visible when printed as controlled by CSS @media rules. Is there a way to do this with Selenium? I know there is the isDisplayed method, which takes the CSS into account, but there is nothing I can find to tell Selenium which media type to apply. Is there a way to do this? Or is there another way to test web pages to make sure the elements you want are printed (and those you don't aren't)? Update: For clarity, there are no plans to have a javascript print button. The users will print using the normal print functionality of the browser (Chrome, FF and IE). @media css rules will be used to control what is shown and hidden. I would like Selenium to pretend it is a printer instead of a screen, so I can test if certain elements will be visible in what would be the printed version of the page.

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• PC reboots spontaenously: debugging tips [closed]

  - by aaron

  I swapped my core 2 duo for a quad core recently, and generally things run fine, but every now and then my computer just restarts. I don't even get a blue screen (Vista 32). Core temp isn't a problem. My thinking is that my power supply is inadequate, but I haven't been able to test that (one idea was to under clock the cpu to see if that helped, but going up in speed was the only simple thing to do in the BIOS) Two cases where I semi-consistanly get problems: - Borderlands windowed after some period of time (and some other games, but Borderlands does it pretty regularly) - watching a video (e.g. quicktime/vlc) and having another video running Another thought is non-cpu heat? Maybe the graphics card? Any thoughts on how to track this down appreciated. Thanks!

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• Warning vs. error

  - by Samuel

  I had an annoying issue, getting a "Possible loss of precision" error when compiling my Java program on BlueJ (But from what i read this isn't connected to a specific IDE). I was surprised by the fact that the compiler told me there is a possible loss of precision and wouldnt let me compile/run the program. Why is this an error and not a warning saying you might loose precision here, if you don't want that change your code? The program runs just fine when i drop the float values, it wouldn't matter since there is no point (e.g [143.08, 475.015]) on my screen. On the other hand when i loop through an ArrayList and in this loop i have an if clause removing elements from the ArrayList it runs fine, just throws an error and doesn't display the ArrayList [used for drawing circles] for a fraction of a second. This appears to me as a severe error but doesn't cause (hardly) any troubles, while i wouldn't want to have such a thing in my code at all. What's the boundary?

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• Comparing two xml files

  - by Ragini

  I have two large xml files. Almost 1.4 mb each. I want to compare them and see the differing part. I am using linux. Is there any free tool which can do this for me ? Or any other technique ? I used "diff" command in linux and tried to output the result in another file. (diff file1.xml file2.xml result.xml) But the resulted file showed "Could not parse the xml". However it showed something on screen. I would like the differ part to be stored somewhere if possible. (or atleast I should be able to see it properly) Thanks Ragini

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• Secondary keys in a B-tree

  - by Phenom

  Let's say that there is a file that contains an unsorted list of student information, which includes a student ID number as well as other information. I want to make a program that retrieves student information based on student ID number. In order to make it efficient, I store the student IDs in a B-tree. So when I enter a student ID number, it searches the B-tree to see if its there or not. It also does one more thing. If it finds the student ID number, then it also returns where in the file that student's information is. This is the secondary key. The program uses this information to locate the rest of the student's information and prints it to screen. Can this be done? Is this how a b-tree works?

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• Qt: Animating the 'roll down' of a QWidget

  - by eAi

  I have a QWidget that contains various other widgets. I want to animate it appearing on the screen by gradually revealing it from the top down, increasing it's height from 0 to whatever it's natural height would be. The way I have it currently is: mAnimation = new QPropertyAnimation(this, "maximumHeight"); mAnimation->setStartValue(0); mAnimation->setEndValue(400); mAnimation->start(); This has two issues: - It crashes when the height reaches a certain height, with a "qDrawShadeRect: Invalid parameters" error. - If I change the 0 to 100, it works fine, but the widgets contained within the QWidget I'm animating have their layout changed as the widget animates, starting very squashed together and gradually spreading apart as they get more space. This looks ugly! Does anyone have any suggestions?

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• Session Timeout in VB.NET

  - by BornReady

  Hi, I have written a page with an iFrame that basically cycles through a series of internal pages on our server displaying daily activity for our company. The problem I think is that it sporadically loses its session and redirects back to the login screen to keep losing its session which is the default behavior for anyone on our site trying to access a webpage without being logged in. I have set the session timeout to 4hrs, the iframe cycles through 6 pages anywhere from 10 seconds to 5 minutes on each, and I have even set the META refresh on the page to refresh every 3 hours. I don't understand what else could possibly stop this page from staying active. Any help or ideas is greatly appreciated. Thank you!

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• Please quickly help with this problem I got 52 minutes left.

  - by Hamish Grubijan

  Write a program that prints the numbers from 1 to 100. But for multiples of three print "Fizz" instead of the number and for the multiples of five print "Buzz". For numbers which are multiples of both three and five print "FizzBuzz". Woman said use any common language. Please make it short and test it. My screen is small. Thanks. P.S. I have test anxiety particularly after talking to people in suits. I also stayed up all night studying Java codes.

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• "Single NSMutableArray" vs. "Multiple C-arrays" --Which is more Efficient/Practical?

  - by RexOnRoids

  Situation: I have a DAY structure. The DAY structure has three variables or attributes: a Date (NSString*), a Temperature (float), and a Rainfall (float). Problem: I will be iterating through an array of about 5000 DAY structures and graphing a portion of these onto the screen using OpenGL. Question: As far as drawing performance, which is better? I could simply create an NSMutableArray of DAY structures (NSObjects) and iterate on the array on each draw call -- which I think would be hard on the CPU. Or, I could instead manually manage three different C-Arrays -- One for the Date String (2-Dimensional), One for the temperature (1-Dimensional) and One for the Rainfall (1-Dimensional). I could keep track of the current Day by referencing the current index of the iterated C-Arrays.

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• changing window.location without triggering refresh

  - by jdwyah

  I have an AJAX form that submits GET requests. Because these are all GET requests these should be easily bookmark-able. Preferably I'd make my Ajax request, update the screen and then update window.location.href to be the URL for the new page. Unfortunately this reloads the page. Is there any way I can get around this? Basically I'd like the URL bar to be a permalink bar, but it needs to be able to change to keep up with the state of the page. window.location.hash is no good because that doesn't get sent to the server.

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• Prompts for windows authentication when viewing a page in Web site

  - by Sri Kumar

  Hello All, When i try to view a PARTICULAR page in my web site, it prompts for user name and password. Irrespective of providing proper user name/password and clicking OK or directly clicking Cancel button, the page is getting loaded properly. I am not sure why the authentication screen appears!!! It happens only for that particular page. Initially I thought it could be with file permission but copy pasted another page (which works fine) and renaming it doesn't solve the problem. Thoughts pl. EDIT I copied the source from the browser for that particular page and saved it as HTML. When i try to open the HTML file, it prompts for authentication.

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• iPhone + OpenGL + Touches: FPS drop

  - by Anton

  Hey there, Recently I ran into a very strange issue: touching the screen of the iPhone and moving a finger around can eat up to 50% of my FPS. Yeah, I checked my code for possible bottlenecks – not the issue. The last resort I tried before writing this post – commenting out all the touch processing code and looking at FPS then. Results are: no touches – 58-60. Touching and moving the finger – 35-40 FPS instantly. The rendering is done in a separate thread, so that no main runloop events shall collide with it. However, it's very crushial for me (and the game I develop) to resolve this issue, because such FPS drop is really noticeable. Thank you for your help in advance. UPDATE: seems that setting rendering thread's priority to higher value helps a bit...

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