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• What is a proper way of building Winform apps with multiple "screens"

  - by CurtisHx

  What's a proper way of building a Winform app that has multiple 'screens'? For example, I'm trying to write a small backup program (mainly for giggles), and I've been dumping controls and containers onto the form. I'm using panels and group boxes to separate out the different screens (eg: I'm using a panel to hold all of the controls for the "Settings" window, and another panel to show all the current backups that have been set up). Well, my form.cs file ballooned into a massive amount of code, and I feel like I'm doing something wrong. I can hardly find anything in the file, and I'm ready to start over. This project was just for me to expand my knowledge of C# and .NET, so starting a new project is not a huge deal.

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• *Hidden Features* in your operating system that increase productivity?

  - by AdityaGameProgrammer

  As developers how much time, or do you spend time, In learning the hidden features tricks of your operating system ? How important do you feel is this for productivity in day to day programming? tasks. What do you mean when you list knowledge of an OS in your resume? What are your most useful hidden -less known features For example: A common problem of How can i open the cmd window in a specific location a do it yourself solution in say xp and what to do if something breaks Or are these something you look into as and when you find the need to do so?

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• netflix on ubuntu 12.04

  - by tsi25

  So I have got Ubuntu 12.04 on a system 76 lemur ultra laptop. I installed netflix via terminal with the following chain of commands: sudo apt-get update sudo apt-add-repository ppa:ehoover/compholio sudo apt-get update sudo apt-get install netflix-desktop when it was finished installing, I clicked the icon and something came up asking if you want to install some dependent software, but wouldn't let me interact with the window - so I hit tab and worked my way through that. But my computer shutdown before I could fully install GECKO. Now I have the netflix icon, but when i click it or right click it nothing happens. I had tried uninstalling it with the following commands, sudo apt-add --purge remove netflix-desktop and then reinstalling it but there's no change. does anyone know what I can do to get netflix to run from here? or what I can do to start troubleshooting? I searched around on AskUbuntu but couldn't find any answers to this specific problem.

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• ERROR with Ubuntu: Cannot open the disk 'D:\My Documents\My Virtual Machines\Ubuntu\Ubuntu-1.vmdk' or one of the snapshot disks it depends on

  - by leiyu

  Cannot open the disk 'D:\My Documents\My Virtual Machines\Ubuntu\Ubuntu-1.vmdk' or one of the snapshot disks it depends on. Reason: The physical disk is already in use. ====================== When I powered on my Ubuntu on VMwave, a window showed up within words above. I tried to remove the old hard disk in settings and created a new one, but it still doesnot work. Also, I tried to delete the .lck files and even the doc. BUT....... Has someone solved this problem? PLEASE do me a favour!!Many thanks!!

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• Menus and text boxes look graphically corrupted in 12.10

  - by Stanton.Sculpture

  If I let my computer run long enough the screen gets glitchy or graphically corrupted only in certain areas i.e. in text related boxes, menus, menu bars, scroll bars, the system monitor window, etc. It becomes difficult to read what I am typing. Its been happening quite often and I can only fix it by restarting the computer, but its only a matter of time before it happens again. Don't know what else to do, its been a thorn in my side for quite some time now and I need a fix soon because its only gets more frequent until I'm rebooting my computer five times a day. I attached a picture of what happens to this bug report: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1083474 I know I can repeat this bug but I don't know how to catch it and document it. Any help would be greatly appreciated. Thank you

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• choppy sound with random popping 13.04

  - by Goddard

  I was hoping some one could help me figure out why my audio is popping randomly. I just got some new speakers and it was popping previously, but I was using monitor speakers so it wasn't really noticeable. Now I have some Bose speakers hooked up via an analog cable. It is not the speakers because my Android phone plays audio fine. When I open the sound settings window the popping happens at exactly the same time a third sound device is displayed very quickly and then disappears. This keeps happening at about 30 second intervals. Any help is appreciate. If you need more details just let me know how to get them.

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• DX10 sprite and pixel shader

  - by Alex Farber

  I am using ID3DX10Sprite to draw 2D image on the screen. 3D scene contains only one textured sprite placed over the whole window area. Render method looks like this: m_pDevice-ClearRenderTargetView(...); m_pSprite-Begin(D3DX10_SPRITE_SORT_TEXTURE); m_pSprite-DrawSpritesImmediate(&m_SpriteDefinition, 1, 0, 0); m_pSprite-End(); Now I want to make some transformations with the sprite texture in a shader. Currently the program doesn't work with shader. How it is possible to add pixel shader to the program with this structure? Inside the shader, I need to set all colors equal to red, and multiply pixel values by some coefficient. Something like this: float4 TexturePixelShader(PixelInputType input) : SV_Target { float4 textureColor; textureColor = shaderTexture.Sample(SampleType, input.tex); textureColor.x = textureColor.x * coefficient; textureColor.y = textureColor.x; textureColor.z = textureColor.x; return textureColor; }

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• Thread problem with XNA C#

  - by Luis

  I'm development a network card game, and for now i've two players connected but there is a problem with one of them, this one can't do anything on the game. Looks that screen was blocked. I'm think that is because a code i used before. That code is: if (InvokeRequired) { this.Invoke(new MethodInvoker(delegate { ... })); return; } The code above is surrounding code to changing Button values, make connection with server and create game window. Without this code a warning is shown. InvalidOperationException was unhandled Cross-thread operation not valid: Control 'startGameButton' accessed from a thread other than the thread it was created on.

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• SFML: Monster following player on a straight line

  - by user3504658

  I've searched for this and found a few topics , usually they used a function normalize and using simple vector subtracting which is ok , but how should I do it in sfml ? Instead of using: Movement = p.position() - m.position(); p is the player and m is the monster I used something like this to move on a straight line: sf::Vector2f Tail(0,0); if((mPlayer.getPosition().y - mMonster.GetInstance().getPosition().y) >= (mPlayer.getPosition().x - mMonster.GetInstance().getPosition().x)){ //sf::Vector2f Tail(0,0); Tail.x = mPlayer.getPosition().x - mMonster.GetInstance().getPosition().x; } else if((mPlayer.getPosition().y - mMonster.GetInstance().getPosition().y) <= (mPlayer.getPosition().x - mMonster.GetInstance().getPosition().x)){ //sf::Vector2f Tail(0,0); Tail.y = mPlayer.getPosition().y - mMonster.GetInstance().getPosition().y; } if(!MonsterCollosion()) mMonster.Move(Tail * (TimePerFrame.asSeconds() * 1/2 ) ); It works ok if the the height = the width for the game window, although I think it's not the best looking game when it comes to a moving monster, since it starts fast and then it gets slower so what do you guys advise me to do ?

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• Windows 7 Virtual PC - &ldquo;RPC server unavailable&rdquo;

  - by Kelly Jones

  I use Windows 7 Virtual PC on my current project and I often bring home the files, so I can work some in the evenings.  Since my VHDs are large, I’ll only copy the undo disks, saved state, and virtual machine config files from my external drive.  I copy them to a small portable drive and once I get home, I’ll copy them to a large external drive. I’ve done this for over a year, but recently I started getting an error when I tried to start the VPC after the copying was finished.  It would open the initial window with the progress bar, but eventually the bar would stop, turn red, and then the error “RPC server unavailable” would appear.  When I first started seeing these, I’d try again, but no luck. After some testing, it turns out that my small portable drive is apparently going bad, so it was corrupting the files.  Lucky for me, that I never overwrote my good copies with corrupted copies, at least not at both the office and at home.

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• Can't set 1280x1024 with Nvidia Geforce 8400 GS

  - by torbengb

  I've just installed 10.04 LTS using the Windows installer. The system hangs during boot; the splash screen is frozen and it accepts neither Ctrl+Alt+F2 nor Ctrl+Alt+Del, only a hard reset. (I'm a linux noob.) When I edit the default Grub boot option to omit quiet splash, it gets to the point saying * setting sensors limit [OK] _ and there it stays. I can only get to the desktop using the Grub recovery boot option, of course with a lower resolution (800x600) but everything else seems to work fine. As I said, this is a new install. The only thing I've done is to use the Update Manager to get everything up to date, and activate the newest Nvidia driver using the "Hardware drivers" window. I had a similar problem when I installed 9.04 a year ago, and at that time posted this question with an answer that worked - this doesn't work with 10.04. Running nvidia-xconfig to create a new xorg.conf didn't fix it either (while in Recovery boot).

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• How do I set my environment up for TopCoder?

  - by Nils

  I tried out TopCoder today. While I liked the problem, the Java editor didn't work for me. The remote compiling time and the lack of unit tests also made it difficult to complete the task. I ended up coding the solution in Eclipse and the pasting it into the TopCoder window. I tried out EclipseCoder, but it didn't suit my needs either. What tools do you use and how do you hook up your development environment with TopCoder? How does TopCoder handle submissions, and is there any way to speed up the time it takes to process them?

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• No Grapical log in or anything just terminal code!!

  - by Jonthue

  I just install the unity alpha state 3, and i came across two errors, one stating it could not install a desktop feature or so and the other just had some errors that i had snap shot the error. When it says it was complete I restarted it and after it booted up, i see a long line of boot codes and then it stop with log in name and the after i put my log in name it ask for a password, but the thing is that their was no graphical lil window having my picture and my name, all I see was codes from terminal even after it admitted me in. Black screen white coding like it was a terminal on full screen only every thing was via terminal!!! HELP!!!!

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• Running a startup program in terminal as sudo

  - by Brandon

  I need to run a python script in a terminal, myscript.py at startup (on Lubunt). This script requires root. I've setup a .desktop file that runs the following command: lxterminal --command="python /home/d/Jarvis/alarm.py && /bin/bash" The terminal window opens at startup and runs the script, but then closes when the Python script returns an error (because it's not being run as root). When I change the Exec= to this... lxterminal --command="sudo python /home/d/Jarvis/alarm.py && /bin/bash" ... (prefixing command with 'sudo') which works. However, the terminal opens on startup and displays the [sudo] password for d: \ prompt, requiring me to input my password. I would like the execution of the python script at startup to be completely automatic with no user interaction. How can I accomplish this?

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• Kubuntu 11.10: How to remove "Search and launch"

  - by user38489

  Is it possible to remove the "Search and launch" whateveritis from my "desktop"? I've actually tried both Desktop and Netbook modes, but it stays there in both of them. I'm not afraid of editing files in the ~/.kde dir, but I would be really disappointed if this is the only way to do it. [more details/rants] I was able to wipe out several things but I've ended up with a black window that's movable (Alt-click) but not removable. Beside being surprised by the performances, I find Kubuntu extremely unfriendly, and I can't find the logic behind the items of the interface. I've tried to search for documentation, but what I've found is not updated and doesn't include the Netbook interface.

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• ubiquity "hangs" after hitting first "forward" button

  - by bumbling fool

  I've been trying to install Ubuntu but, no matter what I try (wifi connected, wifi not connected, disk blank, disk prepartitioned...), it just "hangs" at the first window (pick your language) with a non-stop hourglass after hitting "forward". This is on a Stinkpad T42. Shouldn't ubiquity at least tell me what's going on? I tried to find a log but /var/log/installer* isn't present. Initiating ubiquity from command line doesn't provide any debug info either. Even when using --debug or other combinations.

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• WINDOWS 7 DEAD BLUE SCREEN DOES NOT REBOOT OR INSTALL NEW WIN OS

  - by ADAM

  Windows died. So, I installed ubuntu, and have had difficulties downloading apps from the internet like skype or realplayer... etc. And It does not recognize my password. I needed to install drivers for my wireless from cd-rom. It does not show where to save new downloaded files and programs, and app and does not show how to install like windows does. So I would like to go back to windows. Window does not not start up anymore and I can not get safe mode with F8. It goes to black screen only and none of other parameters work when press f8! Any help is highly valued.

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• Phonon - Audio Hardware Setup

  - by Michael

  Does anyone know what configuration file is modified when I change settings within this area of the system settings? I keep choosing my Logitech USB Headset as the soundard, and, when I hit apply, it accepts that change and all is good. However, as soon as I close the system settings window, it loses the setting, so I have to leave it open all the time. How can I make this setting permanent? Thanks for any assistance. I'm actually running Kubuntu 11.10.

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• Displaying a grid based map using C++ and sdl

  - by user15386

  I am trying to create a roguelike game using c++ and SDL. However, I am having trouble getting it to display the map, which is represented by a 2d array of a tile class. Currently, my code is this: for (int y = 0; y!=MAPHEIGHT; y++) { for (int x = 0; x!=MAPWIDTH 1; x++) { apply_surface( x * TILEWIDTH, y * TILEHEIGHT, mymap[x][y].image, screen ); } } However, running this code causes it to both dither for a while before opening the SDL window, and (usually) tell me there is an access violation. How can I display my map?

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• Launching a URL from an OOB Silverlight Application

  So I'm working on this code browser mostly to help me with my fading memory. In the app I want to be able to launch a url. So I do my normal thing and put a line of code that looks like this:System.Windows.Browser.HtmlPage.Window.Navigate(new Uri(ThisURI), "_blank");I was agast when I realized that this didn't work, for that matter it didn't even blow... grr... but with a bit of research I found that the hyper link button worked so a ended up making a little class like this:public class MyHyperLink...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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• White lock screen in Gnome 3.4

  - by kedmond

  I'm using Gnome 3.4 on Ubuntu 12.04. I've noticed that my lock screen is white. If I move the mouse, click, or begin typing my password, my wallpaper appears in the background with the password prompt window, as you'd expect. But I don't think the default lock screen is supposed to just be a white screen, is it? How do I fix this? I can't seem to find anyone else with this problem and I don't know what I need to reinstall or change. Thanks!

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• How to implement the light trails for a tron game?

  - by Link

  Well I was creating a TRON style game, but had an issue with creating the actual light trails for the game. What I'm doing currently is I have an array the same size as my window in pixel size, implemented like this: int* collision[800][600]; Then when the bike goes on a certain pixel, it is marked with a 1 for traveled on. However what is the most efficient way to create a working light trail display? I tried to do something like this: int i, j; for(i=0; i<800; i++) for(j=0; j<600; j++) if(*collision[i][j] == 1) Image::applySurface(i, j, trailSurface, gameScreen); But it isn't working properly? It just fills the whole screen with a sprite instead. Whats a better/faster/working way to do this?

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• Compiz does not work with proprietary nvidia driver

  - by brandizzi

  I have a ThinkPad T420 with an NVidia Quadro video card. It crashes constantly when I close this lid (if you are curious..) and I suspect on a problem with nouveau drivers, so I installed the proprietary NVidia drivers. Howeer, when I install and use this driver, Compiz does not work. If I start a session with uses Compiz, no window manager/decorator is presented. I just can get Metacity working. Does anyone has any idea about what may be causing this problem?

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• Laptop not syncing with Ubuntu One

  - by Lolwhites

  I have a desktop running Maverick, and a laptop running Lucid. Both are supposed to be linked to my Ubuntu One account. The desktop syncs fine, but when I started the laptop for the first time in a couple of months, it wouldn't sync any more. The Ubuntu One Preferences window either reports "Synchronisation complete" even though no recent files have been downloaded nor have any test files created in the relevant synced folder been uploaded, or it says "Synchronisation in progress", which does not appear to be happening as it stays like this for ages and the lights on my router suggest no traffic is going through. Have repeatedly tried disconnecting and reconnecting, and removing the device from the account then reattaching it, all to no avail.

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• Time tracker for lxde

  - by deshmukh

  I have only recently started using lxde. And I am liking it. It is blazing fast, not-at-all resource hungry and just does what I want. The only thing I am missing is a time tracker tool. I have been using Hamster Time Tracker on gnome for quite some time. In lxde, I can still launch the application. But there are no reminders when the time limit is up, etc. The time tracker is just another window. Is there any way to get hamster working in lxde with notifications for time-up and an icon in the panel, etc.? Alternatively, is there another application like Hamster that will do all that Hamster does and WORKS in lxde?

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