dynamic library - Page 313

iTunes + External Hard Drive problem

- by Samwho

Okay, so I've always stored my music on my external hard drive and run it from there with iTunes. Recently, however, it's being a little awkward. I think it was because I accidentally tried to run a song off my hard drive when it wasn't plugged in and, as would be expected, it said it couldn't find it. So I plug the hard drive in, locate the file and off it goes. But now it won't find any of the files... When I go to the "Get Info" page on the right click menu on a song I notice it has prepended file://localhost/ to everything, so my paths look like this: "file://localhost/E:/Sam/Media/Music/[song name]" I went into the iTunes Music Library.xml file and did a search and replace for file://localhost/ and replaced it with nothing and tried opening iTunes again and it just added file://localhost/ to every file again! Anyone have any idea why it does this and how to fix it without reimporting my library?

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iTunes high CPU usage

- by Calm Storm

I upgraded to iTunes 10.4.1 and use Windows 7 and my itunes library is not that large at all (say about 20gb) When I start iTunes the CPU goes between 60-80% and stays there for a long time. I see that the itunes.exe takes about 70% of CPU in Process Explorer and it spawns a SearchProtocolHost.exe every 2 mins or so which takes < 0.1% CPU. Other than that iTunes.exe is always at 70-90% and never lets me do anything else. Does someone have a suggestion? EDIT: I have tried reinstalling 10.4.1 completely deleting my library and starting with a plain installation and that does not work I have tried downgrading to 10.3.x and that does not work either :(

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Windows xp media center, iTunes, Home sharing problem with app Remote and Apple tv2

- by Amador

Hello everybody, greetings from Mexico, sorry about my english but here it goes: I recently bought and apple tv 2nd generation it works just fine, i can see you tube videos but i cant see my library. My pc is conected to the same wi-fi than my apple tv. I have the latest software. I have my firewall off. I turned off and on my router. Search for iphone, ipad remotes on, sharing my library on my local network on, in itunes. Ive checked that my id was the same. On top of that the Remote app doesnt seem to work either. Please help, im kinda loosing my mind over this

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Valid path to deploy vm on host

- by ELSheepO

I've recently added a VM to the library in SCVMM to use with MS Test Pro 2010, and run into a problem. I cannot import it using test pro, it just won't give me any option to import in the lab manager. Also, if I try to deploy it back to the host it came from, it gives me a error saying the path is not valid. Anyone have any insight into this? Also, SCVMM seems to freeze everytime I try to create a new VM from the template of the VM I've stored in the library, the same one thats giving me the problem when I try to deploy it on to the host. Thanks.

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License compatibility question

- by Ivaylo Slavov

I have a question regarding software licenses. I plan to put a license to a framework that I have written. My intention is that the license should be open, in order to maintain a community. Also I want to control when a new version is released and which changes will be included. The license should allow the framework to be used with commercial products, therefore respecting their own license. I have done some quick research and I decided to double license my work under the Apache License 2.0 (ASL) and Eclipse Public License (EPL). My point is that the EPL will provide me the ability to control the release cycle as well as the contributions to the project and the Apache license will take care for any patents a 3rd party might want to use in a derived work. Also both are open licenses. My question is related to the GLP and LGPL licenses. If I have the above licenses to my framework, will it be possible and legal, for someone to create a derived work of my framework, that is also a derived work of, or links a library that is under the LGPL license? Thanks in advance. EDIT: To be clear I will explain how I expect things to work. The framework will define some common API for certain functionalities as well as a Wrapper class that will invoke an implementation of that API. The Wrapper will be part of the framework, but it will internally call the actual implementation. This implementation should be in a separate library, and such libraries I would like to be developed and maintained by community. Surely the community will have to access the framework but I want to limit changes to the framework by the community but I want to provide freedom for any API implementation (a derived work of the framework). The framework will enable flexible configuration mechanisms that will tell which implementation of an API will be used.

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Do input template languages exist?

- by marczellm

When I have to create some textual representation of data, I can use a template language, so that my code does not have to worry about the structure of the output file - I can sometimes even write code that's independent of whether the output is XML, LaTeX or any other plain text. A simple example: Template (in separate file): <someXmlTag> $variableName </someXmlTag> Code: Template(temstring).substitute(variableName="value") Result (written to output file): <someXmlTag> value </someXmlTag> I want to do the same, but in the opposite direction. I have XML or plain text or whatever files to input. I want to describe the input structure in a separate file that looks like the input but has these variable declarations in it, and I want to handle it with code that's independent of the structure. Is there a library for this concept? (We usually handle XML input by using an XML parser library to describe the input structure in program code, handle plaintext input by writing regexes in code, and don't handle LaTeX input because LaTeX can't really be parsed.)

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Named my RPi 512MB @jerpi_bilbo

- by hinkmond

To keep our multiple Raspberry Pi boards apart from each other, I've now named my RPi Model B w/512MB: "jerpi_bilbo", which stands for Java Embedded Raspberry Pi - Bilbo (named after the Hobbit from the J.R.R. Tolkien stories). I also, set up a Twitter account for him. You can follow him at: @jerpi_bilbo He's self-tweeting, manual prompted so far (using Java Embedded 7.0 and twitter4j Java library). Works great! I'm setting him up to be automated self-tweeting soon, so watch for that... Here's a pointer to the open source twitter4j Java library: download here Just unzip and extract out the twitter4j-core-2.2.6.jar and put it on your Java Embedded classpath. Here's how @jerpi_bilbo uses it to Tweet with his Java Embedded runtime: import twitter4j.*; import java.io.* public final class Tweet { public static void main(String[] args) { String statusStr = null; if ((args.length 0) && (args[0] != null)) { statusStr = args[0]; } else { statusStr = new String("Hello World!"); } // Create new instance of the Twitter class Twitter twitter = new TwitterFactory().getInstance(); try { Status status = twitter.updateStatus(statusStr); System.out.println ("Successfully updated the status to: " + status.getText()); } catch (Exception e) { e.printStackTrace(); } } } That's all you need. Java Embedded rocks the RPi! And, @jerpi_bilbo is alive... Hinkmond

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How do I debug why an OSX key binding stopped working?

- by nall

Recently, I've realized that my ^A key binding has stopped working in OSX. My assumption is that some application has registered ^A as a hotkey, but I don't know that for certain. I don't recall installing anything new lately, but it's certainly possible that I did and just forgot. Some other pertinent info: ^A doesn't work in any application -- this isn't just a Terminal.app issue Other control combos (eg: ^E) still work as expected Looking through the Keyboard System Preferences pane shows nothing bound to ^A A reboot doesn't help However, logging into under a freshly made account does cause the issue to go away (i.e.: ^A works for the test account) My StandardKeyBinding.dict has the correct value for ^A Note: I don't have a DefaultKeyBinding.dict in /Library/KeyBindings or ~/Library/KeyBindings Any ideas on how to debug this?

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Good resources for learning modern OpenGL (3.0 or later)?

- by MatterGoal

I stumble upon the search of a good resource to start with OpenGL (3.0 or later) . Well, I found a lot of books but none of them can be considered a good resource! Here two examples: OpenGL Programming Guide (7th edition) http://www.amazon.com/exec/obidos/ASIN/0321552628/khongrou-20 This is FULL of deprecated material! Almost every chapters begin with a note about that. OpenGL Superbible (5th Edition) http://www.amazon.com/exec/obidos/ASIN/0321712617/khongrou-20 This book uses a library created by the author to explain the main arguments, hiding what you want to learn! I don't want to learn how to use your library! I want to learn OpenGL! I hope that you understand this is not the same question like "hey I'm not able to use Google... tell me how to learn OpenGL". I've just finished a full and deep search but I can't find a good and complete resource to learn the "new" OpenGL avoiding deprecated topics. Can someone heading me in the right direction? I know C++ and I have 10 years of experience in development... where I can find a good resource?! I want to spend time on it and I want to learn deeply. (please feel free to edit my question, my English is terrible!)

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iPhone VPN to iTunes Home Sharing [migrated]

- by Philip Crumpton

my goal is to set up a VPN on a Windows machine that contains my iTunes library then connect to that VPN with my iPhone and be able to utilize Home Sharing remotely. I have read that this can easily be set up if the iTunes library is on a Mac (Network Beacon and YazSoft ShareTool are two products I quickly found). I can't find anyone who has had success on a Windows machine, though. In my thinking, there are two options (aside from buying a Mac): 1.) Existing utility that takes care of this for me (like the Mac-only options listed above) and is compatible with iPhone (Hamachi is NOT compatible with iPhone VPN) 2.) Manually configure a VPN to allow Bonjour multicast (can't find any information on this) FYI my router is a Linksys WRT54GL running Tomato 1.28

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Is this too much to ask for a game programming and developing enthusiast? Am I doing this wrong?

- by I_Question_Things_Deeply

I have been a computer-fanatic for almost a decade now. I've always loved and wondered how computers work, even from the purest, lowest hardware level to the very smallest pixel on the screen, and all the software around that. That seems to be my problem though ... as I try to write code (I'm pretty fluent at C++) I always sit there enormous amounts of time in front of a text-editor wondering how every line, statement, datum, function, etc. will correspond to every Assembly and machine instruction performed to do absolutely everything necessary for the kernel to allocate memory to run my compiled program, and all of the other hardware being used as well. For example ... I would write cout << "Before memory changed" << endl; and run the debugger to get the Assembly for this, and then try and reverse disassemble the Assembly to machine code based on my ISA, and then research every .dll, library file, linked library, linking process, linker source code of the program, the make file, the kernel I'm using's steps of processing this compilation, the hardware's part aside from the processor (e.g. video card, sound card, chipset, cache latency, byte-sized registers, calling convention use, DDR3 RAM and disk drive, filesystem functioning and so many other things). Am I going about programming wrong? I mean I feel I should know everything that goes on underneath English syntax on a computer program. But the problem is that the more I research every little thing the less I actually accomplish at all. I can never finish anything because of this mentality, yet I feel compelled to know everything... what should I do?

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Apache RewriteRule ignoring RewriteCond?

- by winsmith

So I have an Apache running on OSX Server 10.4 (don't ask) with multiple sites. In 0002_[example.com].conf, I have this bit of code: <Directory "/Library/WebServer/Documents/secret/"> RewriteEngine On RewriteCond %{REMOTE_ADDR} !^137\.250\. RewriteRule .* /messages/secret.html </Directory> However, in this configuration, the RewriteCond always seems to evaluate to false, since the secret directory gets shown even if the client's address does not begin with 137.250. If I change the config to this <Directory "/Library/WebServer/Documents/secret/"> RewriteEngine On RewriteRule .* /messages/secret.html RewriteCond %{REMOTE_ADDR} !^137\.250\. </Directory> the condition either does not get evaluated at all or always evaluates to true. Either way, all clients get blocked. What am I doing wrong?

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Where is OS X's $PATH set?

- by thepurplepixel

I have a little $PATH problem: I just reinstalled MacPorts, and my path contains the MacPorts directories as it should at the beginning of $PATH. However, despite me having no such setting in my ~/.bashrc, ~/.bash_profile or ~/.profile, /Library/Frameworks/Python.framework/Versions/2.6/bin is somehow getting appended to the beginning of my $PATH: 0 07:15:11pm ~ $ echo $PATH /Library/Frameworks/Python.framework/Versions/2.6/bin:/opt/local/bin:/opt/local/sbin:/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin:/usr/X11/bin I'd like to remove it as the MacPorts version of Python is newer. This must be appended after all the above-listed files are read, but I can't think of where. There is no mention of this in /etc/profile, /etc/bashrc or /etc/paths. Any assistance would be greatly appreciated. Thanks!

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Using (embedding?) wireshark in a C application for sniffing

- by happy_emi

I'm writing a C/C++ application which needs (among other things) to sniff packets and save the output in a file. This file will be read and processed by wireshark after a few days, using a LUA script to do some other stuff. My question is for the sniffing part which must be provided by my application. I can see two ways to do this: 1) Fork the wireshark process in background (of course using the command line version) 2) Using wireshark as library: no forking but include stuff like "wireshark.h" and link against libwireshark.so, thus using function calls to do the sniffing. So far I haven't found any documentation about #2 and it seems that #1 is the "right way" to embed sniffing capabilities in my code. Do you think I'm doing he right thing? Does wireshark allow embedding as a library?

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Songbird very slow, freezes

- by Cawas

I've read on few places that Songbird is no good with more than some thousands of library items because it starts getting quite slow. Well, in my case (which is a clean install) I've imported 17k items (which I know is not that much) and instead of becoming just too slow it frequently gets to not responding for several minutes until getting back to its senses again. That's for whichever random operation such as deleting 1 item from library. I've also read on few more places that gives very little hope on fixing this issue, but I wonder... Is there any way to tweak it and make it work as fast as expected? Am I missing something or is the software just not intended for libraries with more than 10 thousand thingies?

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A unique identifier for a Domain

- by jchoover

I asked a question over on StackOverflow and was directed to ask a related one here to see if I could get any additional input. Basically, I am looking to have my application aware of what domain it's running under, if any at all. (I want to expose certain debugging facilities only in house, and due to our deployment model it isn't possible to have a different build.) Since I am over paranoid, I didn't want to just rely on the domain name to ensure we are in house. As such I noted the DOMAIN_CONTROLLER_INFO (http://msdn.microsoft.com/en-us/library/ms675912(v=vs.85).aspx ) returned from DsGetDcName (http://msdn.microsoft.com/en-us/library/ms675983(v=vs.85).aspx) has a GUID associated with it, however I can find little if any information on it. I am assuming this GUID is generated at the time the first DC in a domain is created, and that it would live on for the life of the domain. Does anyone else have any inner knowledge and would be kind enough to confirm or deny my assumptions?

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iTunes for Ubuntu Studio

- by soundblastdj

I have finally gotten my old Mac HDD sorted out, and now I would like to know if anybody has either: a) a way to run iTunes without wine, as it did not work out well for me the last time I tried it, or b) any other media player that will sync with an iPod and, more importantly, use the same file system. When my Mac died, I started to get into open source. I bought a MacBook Air, only out of necessity. For almost two years now, I have not once backed up or synced my iPod. I am getting nervous that it may give up on it's life soon and would like to find a solution. I don't have enough room on my Air, and it would just erase my iPod anyway... Another thing that I am having trouble with is the way iTunes arranged the music. Now, it is arranged all by artist, then album, the song and I would like to have a media library, but somewhere around 400GB of music is a lot to sift through (I have attempted in the past). Thus I am looking for something that will use the same library format. A side note: As I was writing this I started to wonder; Is a Hackintosh in order here? If somebody will give me instructions on how to install MacOSX for free (maybe Mavericks?) in a dual boot with Ubuntu, I will be ever grateful. :) Thanks, soundblastdj

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trouble installing mercurial 1.5 on os x 10.5.8 (without using MacPorts)

- by gjvis

i'm having trouble installing mercurial 1.5 (build 20100307) from the prebuilt installer on os x 10.5.8. the installer is halting telling me that i need to install python 2.6 to continue. i've installed the latest version of python (2.6.5) twice now but its not helping. which python is reporting /Library/Frameworks/Python.framework/Versions/2.6/bin/python, but i can see that i also have 2.3 and 2.5 in /System/Library/Frameworks/Python.framework/Versions directory, which i suspect is being picked up by the installer ahead of the 2.6 install. if possible i'd like to install mercurial and python without having to resort to MacPorts, but if that is the only option then so be it :)

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403 error after adding javascript to masterpage for sharepoint.

- by Jeremy

I am attempting to add highslide-with-html.js from http://highslide.com/ to my masterpage. I am receiving a 403 forbidden error when I use the provided masterpage. I have placed it in C:\Program Files\Common Files\Microsoft Shared\web server extensions\12\TEMPLATE\LAYOUTS\1033. Test javascript files such as pirate.js which consists solely of alert("Arr!"); have loaded from the same directory. I have provided the code for the masterpage. When I do not reference the problem javascript file there is no 403 error. <%@ Master language="C#" %> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <%@ Import Namespace="Microsoft.SharePoint" %> <%@ Register Tagprefix="SPSWC" Namespace="Microsoft.SharePoint.Portal.WebControls" Assembly="Microsoft.SharePoint.Portal, Version=12.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c" %> <%@ Register Tagprefix="SharePoint" Namespace="Microsoft.SharePoint.WebControls" Assembly="Microsoft.SharePoint, Version=12.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c" %> <%@ Register Tagprefix="WebPartPages" Namespace="Microsoft.SharePoint.WebPartPages" Assembly="Microsoft.SharePoint, Version=12.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c" %> <%@ Register Tagprefix="PublishingWebControls" Namespace="Microsoft.SharePoint.Publishing.WebControls" Assembly="Microsoft.SharePoint.Publishing, Version=12.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c" %> <%@ Register Tagprefix="PublishingNavigation" Namespace="Microsoft.SharePoint.Publishing.Navigation" Assembly="Microsoft.SharePoint.Publishing, Version=12.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c" %> <%@ Register TagPrefix="wssuc" TagName="Welcome" src="~/_controltemplates/Welcome.ascx" %> <%@ Register TagPrefix="wssuc" TagName="DesignModeConsole" src="~/_controltemplates/DesignModeConsole.ascx" %> <%@ Register TagPrefix="PublishingVariations" TagName="VariationsLabelMenu" src="~/_controltemplates/VariationsLabelMenu.ascx" %> <%@ Register Tagprefix="PublishingConsole" TagName="Console" src="~/_controltemplates/PublishingConsole.ascx" %> <%@ Register TagPrefix="PublishingSiteAction" TagName="SiteActionMenu" src="~/_controltemplates/PublishingActionMenu.ascx" %> <html dir="<%$Resources:wss, multipages_direction_dir_value %>" runat="server" __expr-val-dir="ltr"> <head runat="server"> <meta name="GENERATOR" content="Microsoft SharePoint"> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> <meta http-equiv="Expires" content="0"> <SharePoint:RobotsMetaTag runat="server" __designer:Preview="" __designer:Values="<P N='InDesign' T='False' /><P N='ID' T='ctl00' /><P N='Page' ID='1' /><P N='TemplateControl' ID='2' /><P N='AppRelativeTemplateSourceDirectory' R='-1' />"/> <title id="onetidTitle"> <asp:ContentPlaceHolder id="PlaceHolderPageTitle" runat="server"/> </title> <Sharepoint:CssLink runat="server" __designer:Preview="<link rel="stylesheet" type="text/css" href="/Style%20Library/en-US/Core%20Styles/Band.css"/> <link rel="stylesheet" type="text/css" href="/Style%20Library/en-US/Core%20Styles/controls.css"/> <link rel="stylesheet" type="text/css" href="/Style%20Library/zz1_blue.css"/> <link rel="stylesheet" type="text/css" href="/_layouts/1033/styles/core.css"/> " __designer:Values="<P N='InDesign' T='False' /><P N='ID' T='ctl01' /><P N='Page' ID='1' /><P N='TemplateControl' ID='2' /><P N='AppRelativeTemplateSourceDirectory' R='-1' />"/>  <SharePoint:CssRegistration name="<% $SPUrl:~SiteCollection/Style Library/~language/Core Styles/Band.css%>" runat="server" __designer:Preview="<link rel="stylesheet" type="text/css" href="/Style%20Library/en-US/Core%20Styles/Band.css"/> " __designer:Values="<P N='Name' Bound='True' T='SPUrl:~SiteCollection/Style Library/~language/Core Styles/Band.css' /><P N='InDesign' T='False' /><P N='ID' T='ctl02' /><P N='Page' ID='1' /><P N='TemplateControl' ID='2' /><P N='AppRelativeTemplateSourceDirectory' R='-1' />"/> <SharePoint:CssRegistration name="<% $SPUrl:~sitecollection/Style Library/~language/Core Styles/controls.css %>" runat="server" __designer:Preview="<link rel="stylesheet" type="text/css" href="/Style%20Library/en-US/Core%20Styles/controls.css"/> " __designer:Values="<P N='Name' Bound='True' T='SPUrl:~sitecollection/Style Library/~language/Core Styles/controls.css' /><P N='InDesign' T='False' /><P N='ID' T='ctl03' /><P N='Page' ID='1' /><P N='TemplateControl' ID='2' /><P N='AppRelativeTemplateSourceDirectory' R='-1' />"/> <SharePoint:CssRegistration name="<% $SPUrl:~SiteCollection/Style Library/zz1_blue.css%>" runat="server" __designer:Preview="<link rel="stylesheet" type="text/css" href="/Style%20Library/zz1_blue.css"/> " __designer:Values="<P N='Name' Bound='True' T='SPUrl:~SiteCollection/Style Library/zz1_blue.css' /><P N='InDesign' T='False' /><P N='ID' T='ctl04' /><P N='Page' ID='1' /><P N='TemplateControl' ID='2' /><P N='AppRelativeTemplateSourceDirectory' R='-1' />"/> <SharePoint:ScriptLink name="init.js" runat="server" __designer:Preview="<script src="/_layouts/1033/init.js?rev=VhAxGc3rkK79RM90tibDzw%3D%3D"></script> " __designer:Values="<P N='Name' T='init.js' /><P N='InDesign' T='False' /><P N='ID' T='ctl05' /><P N='Page' ID='1' /><P N='TemplateControl' ID='2' /><P N='AppRelativeTemplateSourceDirectory' R='-1' />"/> <SharePoint:ScriptLink Name="highslide-with-html.js" runat="server" __designer:Error="Access to the path 'C:\Program Files\Common Files\Microsoft Shared\Web Server Extensions\12\Template\layouts\1033\highslide-with-html.js' is denied."/>  <asp:ContentPlaceHolder id="PlaceHolderAdditionalPageHead" runat="server"/> </head> <body class="body" onload="javascript:_spBodyOnLoadWrapper();"> <WebPartPages:SPWebPartManager runat="server"/> <form runat="server" onsubmit="return _spFormOnSubmitWrapper();"> <table cellpadding="0" cellspacing="0" class="master"> <tr> <td height="100%" class="shadowLeft"> <div class="spacer"> </div> </td> <td valign="top"> <table cellpadding="0" cellspacing="0" width="100%" class="masterContent"> <tr style="height:0px"><td> <wssuc:DesignModeConsole id="IdDesignModeConsole" runat="server" __designer:Preview="<span __designer:NonVisual="true">[ DesignModeConsoleContainer "DesignModeContainer" ]</span> " __designer:Values="<P N='ID' ID='1' T='IdDesignModeConsole' /><P N='TemplateControl' R='0' />"/></td></tr> <tr> <td colspan="2" class="authoringRegion"> <span class="siteActionMenu"> <PublishingSiteAction:SiteActionMenu runat="server" __designer:Preview="  <table height=100% class="ms-siteaction" cellpadding=0 cellspacing=0> <tr> <td class="ms-siteactionsmenu" id="siteactiontd"> <span style="display:none"><menu type='ServerMenu' id="zz1_SiteActionsMenuMain" largeIconMode="true"><ie:menuitem id="zz2_MenuItem_Create" type="option" iconSrc="/_layouts/images/Actionscreate.gif" onMenuClick="window.location = '/_layouts/create.aspx';" menuGroupId="100"></ie:menuitem><ie:menuitem id="zz3_MenuItem_Settings" type="option" iconSrc="/_layouts/images/ActionsSettings.gif" onMenuClick="window.location = '/_layouts/settings.aspx';" menuGroupId="100"></ie:menuitem></menu></span><div><div><span title="Open Menu"><div id="zz4_SiteActionsMenu_t" class="" onmouseover="MMU_PopMenuIfShowing(this);MMU_EcbTableMouseOverOut(this, true)" hoverActive="ms-siteactionsmenuhover" hoverInactive="" onclick=" MMU_Open(byid(''), MMU_GetMenuFromClientId('zz4_SiteActionsMenu'),event,false, null, 0);" foa="MMU_GetMenuFromClientId('zz4_SiteActionsMenu')" oncontextmenu="this.click(); return false;" nowrap="nowrap"><a id="zz4_SiteActionsMenu" accesskey="/" href="#" onclick="javascript:return false;" style="cursor:pointer;white-space:nowrap;" onfocus="MMU_EcbLinkOnFocusBlur(byid(''), this, true);" onkeydown="MMU_EcbLinkOnKeyDown(byid(''), MMU_GetMenuFromClientId('zz4_SiteActionsMenu'), event);" onclick=" MMU_Open(byid(''), MMU_GetMenuFromClientId('zz4_SiteActionsMenu'),event,false, null, 0);" oncontextmenu="this.click(); return false;" menuTokenValues="MENUCLIENTID=zz4_SiteActionsMenu,TEMPLATECLIENTID=zz1_SiteActionsMenuMain" serverclientid="zz4_SiteActionsMenu">Site Actions<img src="/_layouts/images/blank.gif" border="0" alt="Use SHIFT+ENTER to open the menu (new window)."/></a><img align="absbottom" src="/_layouts/images/whitearrow.gif" alt="" /></div></span></div></div> </td> </tr> </table>  " __designer:Values="<P N='TemplateControl' R='0' />"/> </span> <div class="sharepointLogin">  <table cellpadding="0" cellspacing="0" > <tr> <td class="ms-globallinks"> <SharePoint:DelegateControl ControlId="GlobalSiteLink1" Scope="Farm" runat="server" __designer:Preview="<span style='padding-left:3px'></span> <a id="ctl00_ctl09_hlMySite" href="http://litwaredemo:80/MySite/_layouts/MySite.aspx">My Site</a> <span style='padding-left:4px;padding-right:3px'>|</span> " __designer:Values="<P N='ControlId' T='GlobalSiteLink1' /><P N='Scope' T='Farm' /><P N='ID' T='ctl08' /><P N='Page' ID='1' /><P N='TemplateControl' ID='2' /><P N='AppRelativeTemplateSourceDirectory' R='-1' />"/></td> <td class="ms-globallinks"> <SharePoint:DelegateControl ControlId="GlobalSiteLink2" Scope="Farm" runat="server" __designer:Preview="<span id="ctl00_ctl11_MyLinksMenu"><span style="display:none"><menu type='ServerMenu' id="ctl00_ctl11_MyLinksMenuMenuTemplate" largeIconMode="true"></menu></span><span title="Open Menu"><span id="ctl00_ctl11_MyLinksMenuMenu_t" class="ms-SPLink ms-hovercellinactive" onmouseover="MMU_PopMenuIfShowing(this);MMU_EcbTableMouseOverOut(this, true)" hoverActive="ms-SPLink ms-hovercellactive" hoverInactive="ms-SPLink ms-hovercellinactive" onclick="javascript:FetchCallbackMenuItems(&#39;ctl00_ctl11_MyLinksMenuMenuTemplate&#39;); MMU_Open(byid('ctl00_ctl11_MyLinksMenuMenuTemplate'), MMU_GetMenuFromClientId('ctl00_ctl11_MyLinksMenuMenu'),event,true, null, 0);" foa="MMU_GetMenuFromClientId('ctl00_ctl11_MyLinksMenuMenu')" oncontextmenu="this.click(); return false;" nowrap="nowrap"><a id="ctl00_ctl11_MyLinksMenuMenu" accesskey="M" href="#" onclick="javascript:return false;" style="cursor:pointer;white-space:nowrap;" onfocus="MMU_EcbLinkOnFocusBlur(byid('ctl00_ctl11_MyLinksMenuMenuTemplate'), this, true);" onkeydown="MMU_EcbLinkOnKeyDown(byid('ctl00_ctl11_MyLinksMenuMenuTemplate'), MMU_GetMenuFromClientId('ctl00_ctl11_MyLinksMenuMenu'), event);" onclick="javascript:FetchCallbackMenuItems(&#39;ctl00_ctl11_MyLinksMenuMenuTemplate&#39;); MMU_Open(byid('ctl00_ctl11_MyLinksMenuMenuTemplate'), MMU_GetMenuFromClientId('ctl00_ctl11_MyLinksMenuMenu'),event,true, null, 0);" oncontextmenu="this.click(); return false;" menuTokenValues="MENUCLIENTID=ctl00_ctl11_MyLinksMenuMenu,TEMPLATECLIENTID=ctl00_ctl11_MyLinksMenuMenuTemplate" serverclientid="ctl00_ctl11_MyLinksMenuMenu">My Links<img src="/_layouts/images/blank.gif" border="0" alt="Use SHIFT+ENTER to open the menu (new window)."/></a><img align="absbottom" src="/_layouts/images/menudark.gif" alt="" /></span></span></span>|" __designer:Values="<P N='ControlId' T='GlobalSiteLink2' /><P N='Scope' T='Farm' /><P N='ID' T='ctl10' /><P N='Page' ID='1' /><P N='TemplateControl' ID='2' /><P N='AppRelativeTemplateSourceDirectory' R='-1' />"/></td> <td class="ms-globallinks"> <wssuc:Welcome id="explitLogout" runat="server" __designer:Preview=" <span style="display:none"><menu type='ServerMenu' id="zz5_ID_PersonalActionMenu" largeIconMode="true"><ie:menuitem id="zz6_ID_PersonalInformation" type="option" iconSrc="/_layouts/images/menuprofile.gif" onMenuClick="javascript:GoToPage('\u002f_layouts\u002fuserdisp.aspx?Force=True\u0026ID=' + _spUserId);return false;" menuGroupId="100"></ie:menuitem><ie:menuitem id="zz7_ID_LoginAsDifferentUser" type="option" onMenuClick="javascript:LoginAsAnother('\u002f_layouts\u002fAccessDenied.aspx?loginasanotheruser=true', 0)" menuGroupId="200"></ie:menuitem><ie:menuitem id="zz8_ID_RequestAccess" type="option" onMenuClick="window.location = '/_layouts/reqacc.aspx?type=list&amp;name=%7B36F0105B%2D0F8E%2D4A22%2DBE90%2D716A51E97B5D%7D';" menuGroupId="200"></ie:menuitem><ie:menuitem id="zz9_ID_Logout" type="option" onMenuClick="window.location = '/_layouts/SignOut.aspx';" menuGroupId="200"></ie:menuitem></menu></span><span title="Open Menu"><div id="zz10_Menu_t" class="ms-SPLink ms-SpLinkButtonInActive" onmouseover="MMU_PopMenuIfShowing(this);MMU_EcbTableMouseOverOut(this, true)" hoverActive="ms-SPLink ms-SpLinkButtonActive" hoverInactive="ms-SPLink ms-SpLinkButtonInActive" onclick=" MMU_Open(byid(''), MMU_GetMenuFromClientId('zz10_Menu'),event,false, null, 0);" foa="MMU_GetMenuFromClientId('zz10_Menu')" oncontextmenu="this.click(); return false;" nowrap="nowrap"><a id="zz10_Menu" accesskey="L" href="#" onclick="javascript:return false;" style="cursor:pointer;white-space:nowrap;" onfocus="MMU_EcbLinkOnFocusBlur(byid(''), this, true);" onkeydown="MMU_EcbLinkOnKeyDown(byid(''), MMU_GetMenuFromClientId('zz10_Menu'), event);" onclick=" MMU_Open(byid(''), MMU_GetMenuFromClientId('zz10_Menu'),event,false, null, 0);" oncontextmenu="this.click(); return false;" menuTokenValues="MENUCLIENTID=zz10_Menu,TEMPLATECLIENTID=zz5_ID_PersonalActionMenu" serverclientid="zz10_Menu">Welcome LitwareInc Administrator<img src="/_layouts/images/blank.gif" border="0" alt="Use SHIFT+ENTER to open the menu (new window)."/></a><img align="absbottom" src="/_layouts/images/menudark.gif" alt="" /></div></span><script type="text/javascript" language="javascript">var _spUserId=1;</script> <a id="explitLogout_ExplicitLogin" Href="_controltemplates/http://litwaredemo/_layouts/Authenticate.aspx" style="display:none">Sign In</a> " __designer:Values="<P N='ID' ID='1' T='explitLogout' /><P N='TemplateControl' R='0' />"/></td> </tr> </table> </div> <div class="console"> <PublishingConsole:Console runat="server" __designer:Preview="  <span id="ctl00_publishingContext1"></span> <script type="text/javascript" language="javascript">if (document.getElementById('mpdmconsole')) { ShowConsoleBlockPaddingWithOverhang('mpLeftBackPadding', 'mpRightBackPadding', 'masterPageLeftOverhang', 'masterPageRightOverhang'); } </script>  " __designer:Values="<P N='TemplateControl' R='0' />"/> </div> </td> </tr> <tr> <td colspan="2" > <table cellpadding="0" cellspacing="0" width="100%"> <tr> <td colspan="4" class="topArea"> <SharePoint:AspMenu ID="logoLinkId" runat="server" DataSourceID="SiteMapDataSourceRoot" StaticDisplayLevels="1" MaximumDynamicDisplayLevels="0" AccessKey="1" CssClass="logo" __designer:Preview="<table id="zz12_logoLinkId" class="logo" cellpadding="0" cellspacing="0" border="0"> <tr id="zz12_logoLinkIdn0"> <td><table cellpadding="0" cellspacing="0" border="0" width="100%"> <tr> <td style="white-space:nowrap;width:100%;"><a Href="/Pages/Default.aspx" accesskey="1" style="text-decoration:none;">Home</a></td> </tr> </table></td> </tr> </table>" __designer:Values="<P N='ID' T='logoLinkId' /><P N='MaximumDynamicDisplayLevels' T='0' /><P N='DataSourceID' T='SiteMapDataSourceRoot' /><P N='AccessKey' T='1' /><P N='ControlStyle'><P N='CssClass' ID='1' T='logo' /><P N='Font' ID='2' /><P N='IsEmpty' T='False' /></P><P N='CssClass' R='1' /><P N='Font' R='2' /><P N='Page' ID='3' /><P N='TemplateControl' ID='4' /><P N='AppRelativeTemplateSourceDirectory' R='-1' />" __designer:Templates="<Group Name="Item Templates"><Template Name="StaticItemTemplate" Flags="D" Content="" /><Template Name="DynamicItemTemplate" Flags="D" Content="" /></Group>"/> <PublishingNavigation:PortalSiteMapDataSource ID="SiteMapDataSourceRoot" Runat="server" SiteMapProvider="CombinedNavSiteMapProvider" EnableViewState="true" StartFromCurrentNode="true" StartingNodeOffset="0" ShowStartingNode="true" __designer:Preview="<table cellpadding=4 cellspacing=0 style="font:messagebox;color:buttontext;background-color:buttonface;border: solid 1px;border-top-color:buttonhighlight;border-left-color:buttonhighlight;border-bottom-color:buttonshadow;border-right-color:buttonshadow"> <tr><td nowrap><span style="font-weight:bold">PortalSiteMapDataSource</span> - SiteMapDataSourceRoot</td></tr> <tr><td></td></tr> </table>" __designer:Values="<P N='ID' T='SiteMapDataSourceRoot' /><P N='SiteMapProvider' T='CombinedNavSiteMapProvider' /><P N='StartFromCurrentNode' T='True' /><P N='Page' ID='1' /><P N='TemplateControl' ID='2' /><P N='AppRelativeTemplateSourceDirectory' R='-1' />"/> <div class="topLinkBar"> <div class="topLink"> <PublishingVariations:VariationsLabelMenu id="labelmenu1" runat="server" __designer:Preview="<span __designer:NonVisual="true"><table cellpadding=4 cellspacing=0 style="font:messagebox;color:buttontext;background-color:buttonface;border: solid 1px;border-top-color:buttonhighlight;border-left-color:buttonhighlight;border-bottom-color:buttonshadow;border-right-color:buttonshadow"> <tr><td nowrap><span style="font-weight:bold">VariationDataSource</span> - LabelMenuDataSource</td></tr> <tr><td></td></tr> </table></span> " __designer:Values="<P N='ID' ID='1' T='labelmenu1' /><P N='TemplateControl' R='0' />"/> </div> </div> </td> </tr> <tr class="topNavContainer"> <td class="topNavRoundLeft"> <div class="glassSpacerLeft" /> </td> <td valign="top" width="100%"> <SharePoint:AspMenu ID="GlobalNav" Runat="server" DataSourceID="SiteMapDataSource1" Orientation="Horizontal" StaticDisplayLevels="1" MaximumDynamicDisplayLevels="1" StaticSubMenuIndent="0" DynamicHorizontalOffset="0" DynamicVerticalOffset="-8" StaticEnableDefaultPopOutImage="false" ItemWrap="false" SkipLinkText="<%$Resources:cms,masterpages_skiplinktext%>" CssClass="topNav" __designer:Preview="<table id="zz13_GlobalNav" class="topNav" cellpadding="0" cellspacing="0" border="0"> <tr> <td title="Document Center site" id="zz13_GlobalNavn0"><table class="topNavItem" cellpadding="0" cellspacing="0" border="0" width="100%"> <tr> <td style="white-space:nowrap;"><a class="topNavItem" Href="/Docs" style="text-decoration:none;border-style:none;">Document Center</a></td> </tr> </table></td><td style="width:0px;"></td><td style="width:0px;"></td><td title="Company News Home" id="zz13_GlobalNavn1"><table class="topNavItem" cellpadding="0" cellspacing="0" border="0" width="100%"> <tr> <td style="white-space:nowrap;"><a class="topNavItem" Href="/News/Pages/Default.aspx" style="text-decoration:none;border-style:none;">News</a></td> </tr> </table></td><td style="width:0px;"></td><td style="width:0px;"></td><td title="Report Center" id="zz13_GlobalNavn2"><table class="topNavItem" cellpadding="0" cellspacing="0" border="0" width="100%"> <tr> <td style="white-space:nowrap;"><a class="topNavItem" Href="/Reports/Pages/Default.aspx" style="text-decoration:none;border-style:none;">Reports</a></td> </tr> </table></td><td style="width:0px;"></td><td style="width:0px;"></td><td title="The Search Center displays search results" id="zz13_GlobalNavn3"><table class="topNavItem" cellpadding="0" cellspacing="0" border="0" width="100%"> <tr> <td style="white-space:nowrap;"><a class="topNavItem" Href="/SearchCenter/Pages/default.aspx" style="text-decoration:none;border-style:none;">Search</a></td> </tr> </table></td><td style="width:0px;"></td><td style="width:0px;"></td><td title="Site Directory web" id="zz13_GlobalNavn4"><table class="topNavItem" cellpadding="0" cellspacing="0" border="0" width="100%"> <tr> <td style="white-space:nowrap;"><a class="topNavItem" Href="/SiteDirectory/Pages/category.aspx" style="text-decoration:none;border-style:none;">Sites</a></td> </tr> </table></td><td style="width:0px;"></td> </tr> </table>" __designer:Values="<P N='ID' T='GlobalNav' /><P N='DynamicHoverStyle'><P N='CssClass' T='topNavFlyOutsHover' /><P N='IsEmpty' T='False' /></P><P N='DynamicMenuItemStyle'><P N='CssClass' T='topNavFlyOutsItem' /><P N='IsEmpty' T='False' /></P><P N='DynamicMenuStyle'><P N='CssClass' T='topNavFlyOuts' /><P N='IsEmpty' T='False' /></P><P N='DynamicVerticalOffset' T='-8' /><P N='MaximumDynamicDisplayLevels' T='1' /><P N='Orientation' E='0' /><P N='SkipLinkText' Bound='True' T='Resources:cms,masterpages_skiplinktext' /><P N='StaticEnableDefaultPopOutImage' T='False' /><P N='StaticHoverStyle'><P N='CssClass' T='topNavHover' /><P N='IsEmpty' T='False' /></P><P N='StaticMenuItemStyle'><P N='CssClass' T='topNavItem' /><P N='ItemSpacing' T='0px' /><P N='IsEmpty' T='False' /></P><P N='StaticSelectedStyle'><P N='CssClass' T='topNavSelected' /><P N='ItemSpacing' T='0px' /><P N='IsEmpty' T='False' /></P><P N='StaticSubMenuIndent' T='0px' /><P N='DataSourceID' T='SiteMapDataSource1' /><P N='ControlStyle'><P N='CssClass' ID='1' T='topNav' /><P N='Font' ID='2' /><P N='IsEmpty' T='False' /></P><P N='CssClass' R='1' /><P N='Font' R='2' /><P N='Page' ID='3' /><P N='TemplateControl' ID='4' /><P N='AppRelativeTemplateSourceDirectory' R='-1' />" __designer:Templates="<Group Name="Item Templates"><Template Name="StaticItemTemplate" Flags="D" Content="" /><Template Name="DynamicItemTemplate" Flags="D" Content="" /></Group>"> <StaticMenuItemStyle CssClass="topNavItem" ItemSpacing="0"/> <StaticSelectedStyle CssClass="topNavSelected" ItemSpacing="0"/> <StaticHoverStyle CssClass="topNavHover"/> <DynamicMenuStyle CssClass="topNavFlyOuts" /> <DynamicMenuItemStyle CssClass="topNavFlyOutsItem" /> <DynamicHoverStyle CssClass="topNavFlyOutsHover"/> </SharePoint:AspMenu> <PublishingNavigation:PortalSiteMapDataSource ID="siteMapDataSource1" Runat="server" SiteMapProvider="CombinedNavSiteMapProvider" EnableViewState="true" StartFromCurrentNode="true" StartingNodeOffset="0" ShowStartingNode="false" TreatStartingNodeAsCurrent="true" TrimNonCurrentTypes="Heading" __designer:Preview="<table cellpadding=4 cellspacing=0 style="font:messagebox;color:buttontext;background-color:buttonface;border: solid 1px;border-top-color:buttonhighlight;border-left-color:buttonhighlight;border-bottom-color:buttonshadow;border-right-color:buttonshadow"> <tr><td nowrap><span style="font-weight:bold">PortalSiteMapDataSource</span> - siteMapDataSource1</td></tr> <tr><td></td></tr> </table>" __designer:Values="<P N='ID' T='siteMapDataSource1' /><P N='SiteMapProvider' T='CombinedNavSiteMapProvider' /><P N='StartFromCurrentNode' T='True' /><P N='ShowStartingNode' T='False' /><P N='TreatStartingNodeAsCurrent' T='True' /><P N='TrimNonCurrentTypes' E='32' /><P N='Page' ID='1' /><P N='TemplateControl' ID='2' /><P N='AppRelativeTemplateSourceDirectory' R='-1' />"/> </td> <td> <div class="search"> <asp:ContentPlaceHolder id="PlaceHolderSearchArea" runat="server"> <SPSWC:SearchBoxEx id="SearchBox" RegisterStyles="false" TextBeforeDropDown="" TextBeforeTextBox="<%$Resources:cms,masterpages_searchbox_label%>" TextBoxWidth="100" GoImageUrl="<% $SPUrl:~sitecollection/Style Library/Images/Search_Arrow.jpg %>" GoImageUrlRTL="<% $SPUrl:~sitecollection/Style Library/Images/Search_Arrow_RTL.jpg %>" UseSiteDefaults="true" DropDownMode = "HideScopeDD" SuppressWebPartChrome="true" runat="server" WebPart="true" __WebPartId="{7DECDCCA-FDA0-4739-8F0E-7B8DE48F0E0D}" __Preview="<table TOPLEVEL border="0" cellpadding="0" cellspacing="0" width="100%"> <tr> <td><table border="0" cellpadding="0" cellspacing="0" width="100%"> <tr class="ms-WPHeader"> <td title="" id="WebPart

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adobe flash buider (flex4): Error #2025 or Error: addChild() is not available in this class. Instead

- by user306584

Hi, I'm a complete newbie to Flex, so apologies for my dumbness. I've searched for an answer but haven't found anything that seems to be doing the trick. What I'm trying to do: port this example http://www.adobe.com/devnet/air/flex/articles/flex_air_codebase_print.html to Flash Builder 4. All seems to be fine but for one thing. When I use the original code for the Air application <?xml version="1.0" encoding="utf-8"?> <s:WindowedApplication xmlns:fx="http://ns.adobe.com/mxml/2009" xmlns:s="library://ns.adobe.com/flex/spark" xmlns:mx="library://ns.adobe.com/flex/mx" creationComplete="onApplicationComplete()"> <fx:Script> <![CDATA[ private static const neededForCompilation:AirGeneralImplementation = null; private function onApplicationComplete():void { var can:MainCanvas = new MainCanvas(); this.addChild(can); can.labelMessage = "Loaded in an AIR Application "; } ]]> </fx:Script> <fx:Declarations>  </fx:Declarations> </s:WindowedApplication> I get this run time error Error: addChild() is not available in this class. Instead, use addElement() or modify the skin, if you have one. at spark.components.supportClasses::SkinnableComponent/addChild()[E:\dev\4.0.0\frameworks\projects\spark\src\spark\components\supportClasses\SkinnableComponent.as:1038] If I substitute the code with this.addElement(can); Everything loads well but the first time I try to press any of the buttons on the main canvas I get the following run time error ArgumentError: Error #2025: The supplied DisplayObject must be a child of the caller. at flash.display::DisplayObjectContainer/getChildIndex() at mx.managers::SystemManager/getChildIndex()[E:\dev\4.0.0\frameworks\projects\framework\src\mx\managers\SystemManager.as:1665] at mx.managers.systemClasses::ActiveWindowManager/mouseDownHandler()[E:\dev\4.0.0\frameworks\projects\framework\src\mx\managers\systemClasses\ActiveWindowManager.as:437] here's the super simple code for the main canvas <?xml version="1.0" encoding="utf-8"?> <s:Application xmlns:fx="http://ns.adobe.com/mxml/2009" xmlns:s="library://ns.adobe.com/flex/spark" xmlns:mx="library://ns.adobe.com/flex/mx" minWidth="955" minHeight="600" creationComplete="init();"> <fx:Declarations>  </fx:Declarations> <fx:Script source="main.as" /> <mx:Label id="lblMessage" text="The UI from the shared Flex app BothCode" x="433" y="112"/> <s:Button x="433" y="141" click="saveFile();" label="Save File"/> <s:Button x="601" y="141" click="GeneralFactory.getGeneralInstance().airOnlyFunctionality();" label="Air Only"/> </s:Application> Any help would be immensely appreciated. And any pointers to how to setup a project that can compile in both Air and Flash while sharing the same code, all for Flex 4, would also be immensely appreciated. thank you!

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Is it possible to specify a generic constraint for a type parameter to be convertible FROM another t

- by fostandy

Suppose I write a library with the following: public class Bar { /* ... */ } public class SomeWeirdClass<T> where T : ??? { public T BarMaker(Bar b) { // ... play with b T t = (T)b return (T) b; } } Later, I expect users to use my library by defining their own types which are convertible to Bar and using the SomeWeirdClass 'factory'. public class Foo { public static explicit operator Foo(Bar f) { return new Bar(); } } public class Demo { public static void demo() { Bar b = new Bar(); SomeWeirdClass<Foo> weird = new SomeWeirdClass<Foo>(); Foo f = weird.BarMaker(b); } } this will compile if i set where T : Foo but the problem is that I don't know about Foo at the library's compile time, and I actually want something more like where T : some class that can be instantiated, given a Bar Is this possible? From my limited knowledge it does not seem to be, but the ingenuity of the .NET framework and its users always surprises me... This may or not be related to the idea of static interface methods - at least, I can see the value in being able to specify the presence of factory methods to create objects (similar to the same way that you can already perform where T : new()) edit: Solution - thanks to Nick and bzIm - For other readers I'll provide a completed solution as I understand it: edit2: This solution requires Foo to expose a public default constructor. For an even stupider better solution that does not require this see the very bottom of this post. public class Bar {} public class SomeWeirdClass<T> where T : IConvertibleFromBar<T>, new() { public T BarMaker(Bar b) { T t = new T(); t.Convert(b); return t; } } public interface IConvertibleFromBar<T> { T Convert(Bar b); } public class Foo : IConvertibleFromBar<Foo> { public static explicit operator Foo(Bar f) { return null; } public Foo Convert(Bar b) { return (Foo) b; } } public class Demo { public static void demo() { Bar b = new Bar(); SomeWeirdClass<Foo> weird = new SomeWeirdClass<Foo>(); Foo f = weird.BarMaker(b); } } edit2: Solution 2: Create a type convertor factory to use: #region library defined code public class Bar {} public class SomeWeirdClass<T, TFactory> where TFactory : IConvertorFactory<Bar, T>, new() { private static TFactory convertor = new TFactory(); public T BarMaker(Bar b) { return convertor.Convert(b); } } public interface IConvertorFactory<TFrom, TTo> { TTo Convert(TFrom from); } #endregion #region user defined code public class BarToFooConvertor : IConvertorFactory<Bar, Foo> { public Foo Convert(Bar from) { return (Foo) from; } } public class Foo { public Foo(int a) {} public static explicit operator Foo(Bar f) { return null; } public Foo Convert(Bar b) { return (Foo) b; } } #endregion public class Demo { public static void demo() { Bar b = new Bar(); SomeWeirdClass<Foo, BarToFooConvertor> weird = new SomeWeirdClass<Foo, BarToFooConvertor>(); Foo f = weird.BarMaker(b); } }

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Is it possible to specify a generic constraint for a type parameter to be convertible FROM another t

- by fostandy

Suppose I write a library with the following: public class Bar { /* ... */ } public class SomeWeirdClass<T> where T : ??? { public T BarMaker(Bar b) { // ... play with b T t = (T)b return (T) b; } } Later, I expect users to use my library by defining their own types which are convertible to Bar and using the SomeWeirdClass 'factory'. public class Foo { public static explicit operator Foo(Bar f) { return new Bar(); } } public class Demo { public static void demo() { Bar b = new Bar(); SomeWeirdClass<Foo> weird = new SomeWeirdClass<Foo>(); Foo f = weird.BarMaker(b); } } this will compile if i set where T : Foo but the problem is that I don't know about Foo at the library's compile time, and I actually want something more like where T : some class that can be instantiated, given a Bar Is this possible? From my limited knowledge it does not seem to be, but the ingenuity of the .NET framework and its users always surprises me... This may or not be related to the idea of static interface methods - at least, I can see the value in being able to specify the presence of factory methods to create objects (similar to the same way that you can already perform where T : new()) edit: Solution - thanks to Nick and bzIm - For other readers I'll provide a completed solution as I understand it: edit2: This solution requires Foo to expose a public default constructor. For an even stupider better solution that does not require this see the very bottom of this post. public class Bar {} public class SomeWeirdClass<T> where T : IConvertibleFromBar<T>, new() { public T BarMaker(Bar b) { T t = new T(); t.Convert(b); return t; } } public interface IConvertibleFromBar<T> { T Convert(Bar b); } public class Foo : IConvertibleFromBar<Foo> { public static explicit operator Foo(Bar f) { return null; } public Foo Convert(Bar b) { return (Foo) b; } } public class Demo { public static void demo() { Bar b = new Bar(); SomeWeirdClass<Foo> weird = new SomeWeirdClass<Foo>(); Foo f = weird.BarMaker(b); } } edit2: Solution 2: Create a type convertor factory to use: #region library defined code public class Bar {} public class SomeWeirdClass<T, TFactory> where TFactory : IConvertorFactory<Bar, T>, new() { private static TFactory convertor = new TFactory(); public T BarMaker(Bar b) { return convertor.Convert(b); } } public interface IConvertorFactory<TFrom, TTo> { TTo Convert(TFrom from); } #endregion #region user defined code public class BarToFooConvertor : IConvertorFactory<Bar, Foo> { public Foo Convert(Bar from) { return (Foo) from; } } public class Foo { public Foo(int a) {} public static explicit operator Foo(Bar f) { return null; } public Foo Convert(Bar b) { return (Foo) b; } } #endregion public class Demo { public static void demo() { Bar b = new Bar(); SomeWeirdClass<Foo, BarToFooConvertor> weird = new SomeWeirdClass<Foo, BarToFooConvertor>(); Foo f = weird.BarMaker(b); } }

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How to install PyQt on Mac OS X 10.6.

- by Jebagnanadas

Hello all, I'm quite new to Mac OS X. when i tried to install PyQt on Mac Os X after installing python 3.1, Qt 4.6.2 and SIP 4.10.1 i encounter the following error when i execute $python3 configure.py command. Determining the layout of your Qt installation... This is the GPL version of PyQt 4.7 (licensed under the GNU General Public License) for Python 3.1 on darwin. Type '2' to view the GPL v2 license. Type '3' to view the GPL v3 license. Type 'yes' to accept the terms of the license. Type 'no' to decline the terms of the license. Do you accept the terms of the license? yes Checking to see if the QtGui module should be built... Checking to see if the QtHelp module should be built... Checking to see if the QtMultimedia module should be built... Checking to see if the QtNetwork module should be built... Checking to see if the QtOpenGL module should be built... Checking to see if the QtScript module should be built... Checking to see if the QtScriptTools module should be built... Checking to see if the QtSql module should be built... Checking to see if the QtSvg module should be built... Checking to see if the QtTest module should be built... Checking to see if the QtWebKit module should be built... Checking to see if the QtXml module should be built... Checking to see if the QtXmlPatterns module should be built... Checking to see if the phonon module should be built... Checking to see if the QtAssistant module should be built... Checking to see if the QtDesigner module should be built... Qt v4.6.2 free edition is being used. Qt is built as a framework. SIP 4.10.1 is being used. The Qt header files are in /usr/include. The shared Qt libraries are in /Library/Frameworks. The Qt binaries are in /Developer/Tools/Qt. The Qt mkspecs directory is in /usr/local/Qt4.6. These PyQt modules will be built: QtCore. The PyQt Python package will be installed in /Library/Frameworks/Python.framework/Versions/3.1/lib/python3.1/site-packages. PyQt is being built with generated docstrings. PyQt is being built with 'protected' redefined as 'public'. The Designer plugin will be installed in /Developer/Applications/Qt/plugins/designer. The PyQt .sip files will be installed in /Library/Frameworks/Python.framework/Versions/3.1/share/sip/PyQt4. pyuic4, pyrcc4 and pylupdate4 will be installed in /Library/Frameworks/Python.framework/Versions/3.1/bin. Generating the C++ source for the QtCore module... sip: Usage: sip [-h] [-V] [-a file] [-b file] [-c dir] [-d file] [-e] [-g] [-I dir] [-j #] [-k] [-m file] [-o] [-p module] [-r] [-s suffix] [-t tag] [-w] [-x feature] [-z file] [file] Error: Unable to create the C++ code. Anybody here installed PyQt on Mac OS X 10.6.2 successfully.. Any help would be much appreciated.. Thanks in advance..

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C++ virtual functions.Problem with vtable

- by adivasile

I'm doing a little project in C++ and I've come into some problems regarding virtual functions. I have a base class with some virtual functions: #ifndef COLLISIONSHAPE_H_ #define COLLISIONSHAPE_H_ namespace domino { class CollisionShape : public DominoItem { public: // CONSTRUCTOR //------------------------------------------------- // SETTERS //------------------------------------------------- // GETTERS //------------------------------------------------- virtual void GetRadius() = 0; virtual void GetPosition() = 0; virtual void GetGrowth(CollisionShape* other) = 0; virtual void GetSceneNode(); // OTHER //------------------------------------------------- virtual bool overlaps(CollisionShape* shape) = 0; }; } #endif /* COLLISIONSHAPE_H_ */ and a SphereShape class which extends CollisionShape and implements the methods above /* SphereShape.h */ #ifndef SPHERESHAPE_H_ #define SPHERESHAPE_H_ #include "CollisionShape.h" namespace domino { class SphereShape : public CollisionShape { public: // CONSTRUCTOR //------------------------------------------------- SphereShape(); SphereShape(CollisionShape* shape1, CollisionShape* shape2); // DESTRUCTOR //------------------------------------------------- ~SphereShape(); // SETTERS //------------------------------------------------- void SetPosition(); void SetRadius(); // GETTERS //------------------------------------------------- cl_float GetRadius(); cl_float3 GetPosition(); SceneNode* GetSceneNode(); cl_float GetGrowth(CollisionShape* other); // OTHER //------------------------------------------------- bool overlaps(CollisionShape* shape); }; } #endif /* SPHERESHAPE_H_ */ and the .cpp file: /*SphereShape.cpp*/ #include "SphereShape.h" #define max(a,b) (a>b?a:b) namespace domino { // CONSTRUCTOR //------------------------------------------------- SphereShape::SphereShape(CollisionShape* shape1, CollisionShape* shape2) { } // DESTRUCTOR //------------------------------------------------- SphereShape::~SphereShape() { } // SETTERS //------------------------------------------------- void SphereShape::SetPosition() { } void SphereShape::SetRadius() { } // GETTERS //------------------------------------------------- void SphereShape::GetRadius() { } void SphereShape::GetPosition() { } void SphereShape::GetSceneNode() { } void SphereShape::GetGrowth(CollisionShape* other) { } // OTHER //------------------------------------------------- bool SphereShape::overlaps(CollisionShape* shape) { return true; } } These classes, along some other get compiled into a shared library. Building libdomino.so g++ -m32 -lpthread -ldl -L/usr/X11R6/lib -lglut -lGLU -lGL -shared -lSDKUtil -lglut -lGLEW -lOpenCL -L/home/adrian/AMD-APP-SDK-v2.4-lnx32/lib/x86 -L/home/adrian/AMD-APP-SDK-v2.4-lnx32/TempSDKUtil/lib/x86 -L"/home/adrian/AMD-APP-SDK-v2.4-lnx32/lib/x86" -lSDKUtil -lglut -lGLEW -lOpenCL -o build/debug/x86/libdomino.so build/debug/x86//Material.o build/debug/x86//Body.o build/debug/x86//SphereShape.o build/debug/x86//World.o build/debug/x86//Engine.o build/debug/x86//BVHNode.o When I compile the code that uses this library I get the following error: ../../../lib/x86//libdomino.so: undefined reference to `vtable for domino::CollisionShape' ../../../lib/x86//libdomino.so: undefined reference to `typeinfo for domino::CollisionShape' Command used to compile the demo that uses the library: g++ -o build/debug/x86/startdemo build/debug/x86//CMesh.o build/debug/x86//CSceneNode.o build/debug/x86//OFF.o build/debug/x86//Light.o build/debug/x86//main.o build/debug/x86//Camera.o -m32 -lpthread -ldl -L/usr/X11R6/lib -lglut -lGLU -lGL -lSDKUtil -lglut -lGLEW -ldomino -lSDKUtil -lOpenCL -L/home/adrian/AMD-APP-SDK-v2.4-lnx32/lib/x86 -L/home/adrian/AMD-APP-SDK-v2.4-lnx32/TempSDKUtil/lib/x86 -L../../../lib/x86/ -L"/home/adrian/AMD-APP-SDK-v2.4-lnx32/lib/x86" (the -ldomino flag) And when I run the demo, I manually tell it about the library: LD_LIBRARY_PATH=../../lib/x86/:$AMDAPPSDKROOT/lib/x86:$LD_LIBRARY_PATH bin/x86/startdemo After reading a bit about virtual functions and virtual tables I understood that virtual tables are handled by the compiler and I shouldn't worry about it, so I'm a little bit confused on how to handle this issue. I'm using gcc version 4.6.0 20110530 (Red Hat 4.6.0-9) (GCC) Later edit: I'm really sorry, but I wrote the code by hand directly here. I have defined the return types in the code. I apologize to the 2 people that answered below. I have to mention that I am a beginner at using more complex project layouts in C++.By this I mean more complex makefiles, shared libraries, stuff like that.

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Linking LLVM JIT Code to Static LLVM Libraries?

- by inflector

I'm in the process of implementing a cross-platform (Mac OS X, Windows, and Linux) application which will do lots of CPU intensive analysis of financial data. The bulk of the analysis engine will be written in C++ for speed reasons, with a user-accessible scripting engine interfacing with the C++ testing engine. I want to write several scripting front-ends over time to emulate other popular software with existing large user bases. The first front will be a VisualBasic-like scripting language. I'm thinking that LLVM would be perfect for my needs. Performance is very important because of the sheer amount of data; it can take hours or days to run a single run of tests to get an answer. I believe that using LLVM will also allow me to use a single back-end solution while I implement different front-ends for different flavors of the scripting language over time. The testing engine itself will be separated from the interface and testing will even take place in a separate process with progress and results being reported to the testing management interface. Tests will consist of scripting code integrated with the testing engine code. In a previous implementation of a similar commercial testing system I wrote, I built a fast interpreter which easily interfaced with the testing library because it was written in C++ and linked directly to the testing engine library. Callbacks from scripting code to testing library objects involved translating between the formats with significant overhead. I'm imagining that with LLVM, I could implement the callbacks into C++ directly so that I could make the scripting code work almost as if it had been written in C++. Likewise, if all the code was compiled to LLVM byte-code format, it seems like the LLVM optimizers could optimize across the boundaries between the scripting language and the testing engine code that was written in C++. I don't want to have to compile the testing engine every time. Ideally, I'd like to JIT compile only the scripting code. For small tests, I'd skip some optimization passes, while for large tests, I'd perform full optimizations during the link. So is this possible? Can I precompile the testing engine to a .o object file or .a library file and then link in the scripting code using the JIT? Finally, ideally, I'd like to have the scripting code implement specific methods as subclasses for a specific C++ class. So the C++ testing engine would only see C++ objects while the JIT setup code compiled scripting code that implemented some of the methods for the objects. It seems that if I used the right name mangling algorithm it would be relatively easy to set up the LLVM generation for the scripting language to look like a C++ method call which could then be linked into the testing engine. Thus the linking stage would go in two directions, calls from the scripting language into the testing engine objects to retrieve pricing information and test state information and calls from the testing engine of methods of some particular C++ objects where the code was supplied not from C++ but from the scripting language. In summary: 1) Can I link in precompiled (either .bc, .o, or .a) files as part of the JIT compilation, code-generation process? 2) Can I link in code using that the process in 1) above in such a way that I am able to create code that acts as if it was all written in C++?

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