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  • Disable JPanel with visual effect

    - by Ryan
    I'm looking for a good way to disable a JPanel. I'm using a MVC design for a Java Swing GUI. I want the JPanel to be disabled while the model is processing stuff. I've tried setEnabled(false). That disables user input on the JPanel, but I'd like it to be grayed out to add a more visual effect. Thanks in advance!

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  • Nginx load distribution and multi-domain SSL

    - by Steve Clark
    I'm researching into the best methods of two new parts of our infrastructure, hopefully finding a single solution for both. 1) We're currently running a single application server, and we're going to be adding an additional application server and load balance between the two. 2) We handle a few thousand domains across the application server(s), and we're looking to support SSL. The best method i've come across so far is using nginx for it's Load Distribution to serve the requests to the application servers, and for it's SSL support. If a request is using SSL, nginx accepts the request on, terminates SSL and pipes to apache (app servers). Now, that's all good, but i'm yet to figure out how we can let nginx handle multiple domains using SSL. We're potentially looking at using UCC SSL Certs, so we can support 150 domains on a single certificate, with each cert on a single IP. I'm all new to this (My experience is just with physical load balancers and a single domains on SSL), so any advice would be very much appreciated.

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  • What could be causing LVM errors on first boot after install in Debian?

    - by ianfuture
    Hi, I've installed Debian (lenny) on a machine at home. It was set up during install to have a /boot partition, then the rest was encrypted, then had an LVM ontop of that, then all the other partitons inside LVM. After install completed and on first boot it asked for password to un-encrypt(same password for both drives) then it showed an error which said LVM could not find a physical device with a particular UUID or something similar. LVM install is over two HDs. One is 120GB and one 40GB. 120GB is Master on its IDE cable and this has /boot on it. 40GB is slave on the other IDE cable. Is there anything that could be done to rescue this install? Or diagnose problem? It took ages to get installed due to time spent enrypting drives and I'd rather not go through that again. :( Thanks.. Ian

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  • Overheating on Ubuntu 12.04

    - by mati
    I have a Dell Inspiron Q17R with two graphic cards and I noticed that it is overheating. I installed Bumblebee, Jupiter and Flashblock, and I followed this guide as well, but it still got up to 74C. Is there anything more I can do? It still doesn't really seem to be working well and the fan keeps spinning really fast. After performing the following test: sensors in the terminal, this is what I got: Adapter: Virtual device temp1: +75.0°C (crit = +100.0°C) temp2: +75.0°C (crit = +100.0°C) coretemp-isa-0000 Adapter: ISA adapter Physical id 0: +68.0°C (high = +86.0°C, crit = +100.0°C) Core 0: +68.0°C (high = +86.0°C, crit = +100.0°C) Core 1: +65.0°C (high = +86.0°C, crit = +100.0°C) it doesn't look good.

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  • Procedure for dual booting (2 copies of Win-7) off 2 partitions on same disk

    - by Sam Holder
    What procedure should I follow to set a dual boot (both Win-7 x64) on a machine where (ideally): Both operating systems will be installed on the same physical disk in different partitions When booting into either operating system the contents of the other OS partition disk will not be seen (this just seems safer) Other hard drives in the system will be visible by both OS's 1 copy of Win7 is already installed. Is it as simple as shrinking the existing volume and creating the partition, then sticking the CD in and booting off it and formatting the new partition and then installing another copy of windows onto the new partition? Or will that not work? Or are there gotchas?

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  • Use multiple inheritance to discriminate useage roles?

    - by Arne
    Hi fellows, it's my flight simulation application again. I am leaving the mere prototyping phase now and start fleshing out the software design now. At least I try.. Each of the aircraft in the simulation have got a flight plan associated to them, the exact nature of which is of no interest for this question. Sufficient to say that the operator way edit the flight plan while the simulation is running. The aircraft model most of the time only needs to read-acess the flight plan object which at first thought calls for simply passing a const reference. But ocassionally the aircraft will need to call AdvanceActiveWayPoint() to indicate a way point has been reached. This will affect the Iterator returned by function ActiveWayPoint(). This implies that the aircraft model indeed needs a non-const reference which in turn would also expose functions like AppendWayPoint() to the aircraft model. I would like to avoid this because I would like to enforce the useage rule described above at compile time. Note that class WayPointIter is equivalent to a STL const iterator, that is the way point can not be mutated by the iterator. class FlightPlan { public: void AppendWayPoint(const WayPointIter& at, WayPoint new_wp); void ReplaceWayPoint(const WayPointIter& ar, WayPoint new_wp); void RemoveWayPoint(WayPointIter at); (...) WayPointIter First() const; WayPointIter Last() const; WayPointIter Active() const; void AdvanceActiveWayPoint() const; (...) }; My idea to overcome the issue is this: define an abstract interface class for each usage role and inherit FlightPlan from both. Each user then only gets passed a reference of the appropriate useage role. class IFlightPlanActiveWayPoint { public: WayPointIter Active() const =0; void AdvanceActiveWayPoint() const =0; }; class IFlightPlanEditable { public: void AppendWayPoint(const WayPointIter& at, WayPoint new_wp); void ReplaceWayPoint(const WayPointIter& ar, WayPoint new_wp); void RemoveWayPoint(WayPointIter at); (...) }; Thus the declaration of FlightPlan would only need to be changed to: class FlightPlan : public IFlightPlanActiveWayPoint, IFlightPlanEditable { (...) }; What do you think? Are there any cavecats I might be missing? Is this design clear or should I come up with somethink different for the sake of clarity? Alternatively I could also define a special ActiveWayPoint class which would contain the function AdvanceActiveWayPoint() but feel that this might be unnecessary. Thanks in advance!

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  • Citrix Xen VM's lose networking

    - by Ash
    My client has a XenServer 6.0.2 installation with 2 Window Server 2008 R2 virtual machines. Whenever the virtual machines are rebooted they lose their IP settings (IP address, subnet, gateway). Each time after a reboot I need to login to each VM via XenCenter and re-apply the required static IP settings. This causes issues with connected iSCSI drives within each VM - drives need to be reconnected after each reboot. For example, a network adapter has the following settings pre-reboot: Description . . . . . . . . . . . : Citrix PV Ethernet Adapter #0 Physical Address. . . . . . . . . : C6-FB-A2-4F-2C-F3 IPv4 Address. . . . . . . . . . . : 10.101.0.101(Preferred) Subnet Mask . . . . . . . . . . . : 255.255.255.0 Default Gateway . . . . . . . . . : 10.101.0.10 DNS Servers . . . . . . . . . . . : 10.101.0.100 NetBIOS over Tcpip. . . . . . . . : Enabled Post-reboot: Description . . . . . . . . . . . : Citrix PV Ethernet Adapter #0 Physical Address. . . . . . . . . : C6-FB-A2-4F-2C-F3 Autoconfiguration IPv4 Address. . : 169.254.153.174(Preferred) Subnet Mask . . . . . . . . . . . : 255.255.0.0 Default Gateway . . . . . . . . . : DNS Servers . . . . . . . . . . . : 10.101.0.100 NetBIOS over Tcpip. . . . . . . . : Enabled Under XenCenter -- Virtual Network Interfaces, each adapter is set to a static MAC address (i.e. "Use this MAC address"). I have tried the following commands within one VM but this had no effect: netsh winsock reset catalog netsh int ip reset Can someone please help?

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  • USB Dongle detected but connect option greyed out

    - by GrimSweeper48
    Hey I have just converted one of our physical license servers into a VMware server. It uses a USB key for a license doggle (WIBU-Key) for some software we have. Now it detects that the USB is plugged in on VMware Server (shows up as Wibu-box) under devices. But when I click on it all the options are greyed out including the connect and as such the VM can't read it? The VM is running Windows Server 2003. Anyone have any ideas? Ive attached an image so you can see clearer.

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  • SMS + Web app: Providers of SMS "Long codes" for use by U.S. carrier subscribers within U.S.?

    - by fourh
    Q.: How to get a cellular phone SMS "Long code" for use by U.S. carrier subscribers within U.S.? Background: I'm building a web app that receives queries from/sends answers to cell phones. The app design (and business model) expects to communicate with cell devices via SMS, addressing the web app via an SMS "Long code" (VMN or MSISDN). The mobile phone subscribers will be sending/receiving within the U.S. and using U.S. carriers. Long codes are not available within the U.S. cellular services.

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  • Free UI tools for Cappuccino?

    - by avp
    Hi, I'm looking for free tools to design the UI for my web app. I'm pretty new to this field, so please point me to acceptable solutions. Basically, I need to fill a "screen" with some controls, that's it. Thanks. EDIT: Well, as soon as nobody answers, maybe somebody can help me with this problem for some framework other than Cappuccino?

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  • Open Source - EER Modeling Tool

    - by Nick Fergis
    Is there a good open source or reasonably priced EER modeling tool for MySQL besides MySQL Workbench? I find the MySQL Workbench interface to be clunky. I would like to be able to manage my production schema beginning all design changes in the EER and propogating those out to my schema for created and altered tables. Is anyone use a tool they love to manage their environments in this way? Thanks. - Nick

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  • Which MS technologies would be suited for a data intensive application?

    - by steve.tse
    I'm a junior VB.net developer with little application design knowledge. I've been reading a lot of material online regarding different design patterns, frameworks, and methodologies. It's become a bit confusing for me. Right now I'm trying to decide on what language would be best suited to convert an existing VB6 application (with SQL server backend.) I need to update the UI and add more user functionality and reporting capabilities. Initially I was thinking of using WPF and attempting the MVVM model for this big project. Reports would be generated from SSRS. A peer suggested using ASP.net and I don't have enough experience to determine what would be better. The senior programmers here are stuck on using VB6 and don't have any input on what to use. They are encouraging me to use the latest technologies. This application would be for ~20 users in a central location. Ideally I would stick to a Microsoft .net language. Current interface is similar to a datagrid table where the user would click in to see the detail of each record. They would need to have multiple records open at any given time. I look forward to all the advice I can get. EDIT 2010/04/22 2:47 PM EST What is your audience? Internal clients within an intranet How complex are the interactions you expect to implement? not very... displaying data from SQL server to UI. Allow user updates to said data. Typically just one user modifying a record. Do you require near real-time data updates? no How often do you expect to update the application after the first release? twice/year Do you expect a well-defined set of client platforms? Yes, windows xp environment, potentially upgrading to Win7. Currently in IE.6 moving to IE7 or 8 within a couple of months. Do users need access from anywhere? No, just from their PC.

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  • Is there an open source MVP framework for C++?

    - by morpheous
    I am looking for a lightweight set of C++ classes that implement/show how to use the MVP design pattern, so that I can refactor some legacy code I am working on. A library/framework would be nice to get me started. A quick google search seems to bring up only C# examples - is anyone aware of any C++ ones out there? [Edit] I am particularly interested in a Passive viewer, as I want to completely decouple the view from the model.

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  • VPN server on Windows Server 2008 for a small office

    - by cmbrnt
    I'm going to refurbish the IT-infrastructure for a small organization with one single office, and I'm not sure what VPN server to use. In your opinion, would the built-in Windows Server 2008 VPN server suffice or are there any specific problems with it as opposed to, for example, OpenVPN? I'd rather run a Windows native VPN server, but if there are few (preferably free) good alternatives, I could install VMware ESXi and virtualize both Windows and an OpenVPN-server. By the way, because of a low budget this office runs a solution with only one physical server. Any advice would be great to help me grasp this field of which I'm quite a novice. Thank you!

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  • Install Windows with QEMU

    - by Radium
    I want to understand if it is possible to install Windows from Qemu to a physical HDD. I was trying to do that by doing something like this: qemu-system-x64 -m1024 -vnc :1 -hda /dev/sda -cdrom .../Windows.iso Installed successfully. But when i tried to boot normally got a blue screen telling me that a hardware change appeared so go away. I guess the problem is not because of QEMU-CPU emulation or smth, but because of HDD`s UID change which is used inside of Windows registry. Am i right? So if yes how to workaround this? Maybe i need to prepare Windows before the reboot? I have successfully installed FreeBSD via QEMU and thought with Windows it will go the same ...

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  • Characters spilled over multiple columns in Oracle 11g?

    - by vicky21
    This is related to question: How to store unlimited characters in Oracle 11g? If maximum I need is 8000 characters, can I just add 3 more varchar2 columns so that I will have 4 columns with 2000 char each to get 8000 chars. So when the first column is full, values would be spilled over to the next column and so on. Will this design have any bad side effects? Please suggest.

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  • how to place text or image over another one ?

    - by tismon
    Hi, i am trying to place something(text/image) on another image. how can i do this in Action script ? My pain area is to find out the edges of the base image and bend the placing script or image accordingly.. An example for this can be http://www.zazzle.com/cr/design/pt-mug. somebody please help me. regards tismon

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  • Custom Control for Line

    - by Hamid
    I want to design a custom Control for Line (vertical or horizontal line) basic usercontrol is rectangle and not suitable for line what s your idea about line control?

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  • What are common uses of condition variables in C++?

    - by jasonline
    I'm trying to learn about condition variables. I would like to know what are the common situations where condition variables are used. One example is in a blocking queue, where two threads access the queue - the producer thread pushes an item into the queue, while the consumer thread pops an item from the queue. If the queue is empty, the consumer thread is waiting until a signal is sent by the producer thread. What are other design situations where you need a condition variable to be used?

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  • Win7 Professional x64 16GB (4.99GB usable)

    - by Killrawr
    I've installed Corsair Vengeance CMZ16GX3M2A1600C10, 2x8GB, DDR3-1600, PC3-12800, CL10, DIMM and my BIOS picks up that there is 16GB, Windows says there is 16GB, CPU-z says there is 16GB. But it only says I can use 4.99GB out of 16GB. Motherboard is P55-GD65 (MS-7583) Supports four unbuffered DIMM of 1.5 Volt DDR3 1066/1333/1600*/2000*/2133* (OC) DRAM, 16GB Max Windows (Above screenshot specifies that I am on a System type: 64-bit OS) CPU-z Microsoft says that the physical memory limit on a 64 bit win7 professional operating system is 192GB. Dxdiag Run Command BIOS Screenshot #1 BIOS Screenshot #2 Why is my OS limiting me to just over a quarter of the available memory? is there anyway to increase it?

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