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  • Drawing triangle/arrow on a line with CGContext

    - by Pete
    Hi, I am using the framework of route-me for working with locations. In this code the path between two markers(points) will be drawn as a line. My Question: "What code should I add if I want to add an arrow in the middle(or top) of the line, so that it points the direction" Thanks - (void)drawInContext:(CGContextRef)theContext { renderedScale = [contents metersPerPixel]; float scale = 1.0f / [contents metersPerPixel]; float scaledLineWidth = lineWidth; if(!scaleLineWidth) { scaledLineWidth *= renderedScale; } //NSLog(@"line width = %f, content scale = %f", scaledLineWidth, renderedScale); CGContextScaleCTM(theContext, scale, scale); CGContextBeginPath(theContext); CGContextAddPath(theContext, path); CGContextSetLineWidth(theContext, scaledLineWidth); CGContextSetStrokeColorWithColor(theContext, [lineColor CGColor]); CGContextSetFillColorWithColor(theContext, [fillColor CGColor]); // according to Apple's documentation, DrawPath closes the path if it's a filled style, so a call to ClosePath isn't necessary CGContextDrawPath(theContext, drawingMode); }

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  • reading a line, tokenizing and assigning to struct in C

    - by Dervin Thunk
    line is fgets'd, and running in a while loop with counter n, d is a struct with 2 char arrays, p and q. Basically, in a few words, I want to read a line, separate it into 2 strings, one up until the first space, and the rest of the line. I clean up afterwards (\n from the file becomes \'0'). The code works, but is there a more idiomatic way to do this? What errors am I running into "unknowingly"? int spc = strcspn(line," "); strncpy(d[n].p, line, spc); d[n].p[spc+1]='\0'; int l = strlen(line)-spc; strncpy(d[n].q, line+spc+1, l); char* nl = strchr(d[n].q, '\n'); if(nl){ *nl='\0'; } n++; Thanks.

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  • c++: how can i read a file line by line to a string type variable?

    - by ufk
    Hiya. I'm trying to read a file line by line to a string type variable using the following code: #include <iostream> #include <fstream> ifstream file(file_name); if (!file) { cout << "unable to open file"; exit(1); } string line; while (!file.eof()) { file.getline(line,256); cout<<line; } file.close(); it won't compile when I try to use String class, only when i use char file[256] instead. how can I get line by line into a string class? thanks!

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  • Drawing a 2D line on a canvas

    - by Jason94
    I have the datalist = 62, 76, 80, 72, 71, 75, 77 that i want to present as a 2D line drawed point to point. In my Wpf application i have a canvas with the height: 173 and width: 455. How do i go about it and draw a line by my datalist and use almost the whole height of the canvas? as it is now the data is just represented on a line at the bottom at the canvas, not using (and therefor giving a bad representation of the data) whole heigh of the canvas. It would also be nice to place it in the center of the box too...

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  • adobe air stream end on line (EOF)

    - by goseta
    Hi to all, I need to read a file, which has an "n" number of lines, I need to know when reading the end of each line, so I can store the line in an array, ok so far I have while(stream.position < stream.bytesAvailable) { char = stream.readUTFBytes(1); if(char == "\n") { array.push(line); line = ""; } else { line += char; } } my question is, always the end of line will be "\n"?? how can I be sure if is not an other character like \r??, there is an other character for end of line??, thanks for any help!!!

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  • Modifying AD Schema permissions from the command line

    - by Ryan Roussel
    Recently while making some changes for a client, I accidently dug myself into a pretty deep hole.  I was trying to explicitly deny a certain user from reading a few group policies including the Default Domain Policy.  When I went in to make the change I accidently denied Authenticated Users rather than the AD user object.  This of course made the GPO inaccessible to all users including any with domain admin rights.  The policy could no longer be modified in the GPMC and worse, changes could not be made through ADSIedit.   The errors I was getting from inside ADSIedit when trying to edit the container looked like this This object has one or more property sheets currently open. Invalid path to object The only solution was to strip Authenticated Users from the container ACL completely in the schema, then re-add it back with the default read and apply rights.  To perform this action, I used a command I had never used before:  DSALCS.exe  It’s part of the DSMOD group of tools.  Since this command interacts with the actual schema, you have to know the full LDAP container or object name.  In this case the GUID of the Default Domain Policy: {31B2F340-016D-11D2-945F-00C04FB984F9}   The actual commands I ran looked like this:   To display the current ACL of the container: c:\>dsacls “cn={31B2F340-016D-11D2-945F-00C04FB984F9},cn=Policies,cn=System, dc=domain,dc=com” /A To strip Authenticated Users from the ACL of the container: c:\>dsacls “cn={31B2F340-016D-11D2-945F-00C04FB984F9},cn=Policies,cn=System, dc=domain,dc=com” /R “NT Authority\Authenticated Users”   For full reference of the DSACLS.EXE command visit: http://support.microsoft.com/kb/281146 Once the Authenticated Users was cleared from the ACL, I was able to use Group Policy Management Console to reassign the default permissions.

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  • Automatic Properties, Collection Initializers, and Implicit Line Continuation support with VB 2010

    [In addition to blogging, I am also now using Twitter for quick updates and to share links. Follow me at: twitter.com/scottgu] This is the eighteenth in a series of blog posts Im doing on the upcoming VS 2010 and .NET 4 release. A few days ago I blogged about two new language features coming with C# 4.0: optional parameters and named arguments.  Today Im going to post about a few of my favorite new features being added to VB with VS 2010: Auto-Implemented Properties, Collection...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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  • Box Selection and Multi-Line Editing with VS 2010

    This is the twenty-second in a series of blog posts Im doing on the VS 2010 and .NET 4 release. Ive already covered some of the code editor improvements in the VS 2010 release.  In particular, Ive blogged about the Code Intellisense Improvements, new Code Searching and Navigating Features, HTML, ASP.NET and JavaScript Snippet Support, and improved JavaScript Intellisense.  Todays blog post covers a small, but nice, editor improvement with VS 2010 the ability to use Box Selection...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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  • Wacom Bamboo Model MTE-450 Drawing while hovering

    - by Brook
    My pen will draw without the pen actually touching the tablet. I HAVE SEEN THE OTHER QUESTION about this, but it did NOT answer my question. I have uninstalled re-installed the driver 4 times, I have updated it every time, and my tablet/pen IS NEW. THEY ARE NOT/DO NOT HAVE BUTTONS THAT ARE BROKEN. If anyone can give me an answer besides "Get a new one", please tell me.

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  • MySQL dump, output each table row on a new line whilst using --extended-insert

    - by soopadoubled
    I'm having an issue, where for ease of use, I'd like to be able to format a command line MySQL dump so that each row of a given table is on a new line when using the --extended-insert option. Usually when using --extended-insert, every row of a given table is outputted on one line, and as far as I am aware there's no way to change this, other than post-processing the dump with perl or such like. The format I'm looking for is: -- -- Dumping data for table `ww_tbCountry` -- INSERT INTO `ww_tbCountry` (`iCountryId_PK`, `vCountryName`, `vShortName`, `iSortFlag`, `fTax`, `vCountryCode`, `vSageTaxCode`) VALUES (22, 'Albania', 'AL', 1, 0.00, '8', 'T9'), (33, 'Austria', 'AT', 1, 15.00, '40', 'T9'), (40, 'Belarus', 'BY', 1, 0.00, '112', 'T9'), (41, 'Belgium', 'BE', 1, 15.00, '56', 'T9'), (51, 'Bulgaria', 'BG', 1, 15.00, '100', 'T9' However, when I dump a database using Phpmyadmin, using --extended-insert, each row is dumped on a new line (as shown by the example above). I've gone through Phpmyadmin and can't find any documentation that would explain this. Is anyone able to shed any light on this? Thanks in advance, Ian

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  • Add AD Domain user to sudoers from the command line

    - by Wyatt Barnett
    I'm setting up an Ubuntu 11.04 server VM for use as a database server. It would make everyone's lives easier if we could have folks login using windows credentials and perhaps even make the machine work with the current AD-driven security we've got elsewhere. The first leg of this was really easy to accomplish -- apt-get install likewise-open and I was pretty much in business. The problem I'm having is getting our admins into the sudoers groups -- I can't seem to get anything to take. I've tried: a) usermod -aG sudoers [username] b) adding the user names in several formats (DOMAIN\user, user@domain) to the sudoers file. None of which seemed to take, I still get told "DOMAIN\user is not in the sudoers file. This incident will be reported." So, how do I add non-local users to the sudoers?

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  • program for drawing diagrams

    - by ldigas
    I need to draw a few diagrams that describe the working of some smaller programs (nothing real, but some exercise to illustrate some points). They're supposed to be 'old kind' diagrams, like you remember from the "old school of programming" - I gather some users here will know what I mean. And it's be good if they have ready blocks for program units, IF conditions, FOR/DO loops and such ... So, anyone knows of an application for such ? (I've tried Visio which I have on my work machine (for whatever reason ... I sure didn't put it there) ... but it is "too visual" for this kinda thing ... I just want to draw a few simple black on white diagrams ... nothing special or in colours).

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  • Screen (command-line program) bug?

    - by VioletCrime
    fired up my Minecraft server again after about a year off. My server used to run 11.04, which has since been upgraded to 12.04; I lost my management scripts in the upgrade (thought I'd backed up the user's home directory), but whatever, I enjoy developing stuff like that anyways. However, this time around, I'm running into issues. I start the Minecraft server using a detached screen, however the script is unable to 'stuff' commands into the screen instance until I attach to the screen then detach again? Once I do that, I can stuff anything I want into the server's terminal using the -X option, until I stop/start the server again, then I have to reattach and detach in order to restore functionality? Here's the manager script: #!/bin/bash #Name of the screen housing the server (set with the -S flag at startup) SCREENNAME=minecraft1 #Name of the folder housing the Minecraft world FOLDERNAME=world1 startServer (){ if screen -list | grep "$SCREENNAME" > /dev/null then echo "Cannot start Minecraft server; it is already running!" else screen -dmS $SCREENNAME java -Xmx1024M -Xms1024M -jar minecraft_server.jar sleep 2 if screen -list | grep "$SCREENNAME" > /dev/null then echo "Minecraft server started; happy mining!" else echo "ERROR: Minecraft server failed to start!" fi fi; } stopServer (){ if screen -list | grep "$SCREENNAME" > /dev/null then echo "Server is running. Giving a 1-minute warning." screen -S $SCREENNAME -X stuff "/say Shutting down (halt) in one minute." screen -S $SCREENNAME -X stuff $'\015' sleep 45 screen -S $SCREENNAME -X stuff "/say Shutting down (halt) in 15 seconds." screen -S $SCREENNAME -X stuff $'\015' sleep 15 screen -S $SCREENNAME -X stuff "/stop" screen -S $SCREENNAME -X stuff $'\015' else echo "Server is not running; nothing to stop." fi; } stopServerNow (){ if screen -list | grep "$SCREENNAME" > /dev/null then echo "Server is running. Giving a 5-second warning." screen -S $SCREENNAME -X stuff "/say EMERGENCY SHUTDOWN! 5 seconds to halt." screen -S $SCREENNAME -X stuff $'\015' sleep 5 screen -S $SCREENNAME -X stuff "/stop" screen -S $SCREENNAME -X stuff $'\015' else echo "Server is not running; nothing to stop." fi; } restartServer (){ if screen -list | grep "$SCREENNAME" > /dev/null then echo "Server is running. Giving a 1-minute warning." screen -S $SCREENNAME -X stuff "/say Shutting down (restart) in one minute." screen -S $SCREENNAME -X stuff $'\015' sleep 45 screen -S $SCREENNAME -X stuff "/say Shutting down (restart) in 15 seconds." screen -S $SCREENNAME -X stuff $'\015' sleep 15 screen -S $SCREENNAME -X stuff "/stop" screen -S $SCREENNAME -X stuff $'\015' sleep 2 startServer else echo "Cannot restart server: it isn't running." fi; } #In order for this function to work, a directory 'backup/$FOLDERNAME' must exist in the same #directory that '$FOLDERNAME' resides backupWorld (){ if screen -list | grep "$SCREENNAME" > /dev/null then echo "Server is running. Giving a 1-minute warning." screen -S $SCREENNAME -X stuff "/say Shutting down (backup) in one minute." screen -S $SCREENNAME -X stuff $'\015' screen -S $SCREENNAME -X stuff "/say Server should be down for no more than a few seconds." screen -S $SCREENNAME -X stuff $'\015' sleep 45 screen -S $SCREENNAME -X stuff "/say Shutting down for backup in 15 seconds." screen -S $SCREENNAME -X stuff $'\015' sleep 15 screen -S $SCREENNAME -X stuff "/stop" screen -S $SCREENNAME -X stuff $'\015' fi sleep 2 if screen -list | grep $SCREENNAME > /dev/null then echo "Server is still running? Error." else cd .. tar -czvf backup0.tar.gz $FOLDERNAME mv backup0.tar.gz backup/$FOLDERNAME cd backup/$FOLDERNAME rm backup10.tar.gz mv backup9.tar.gz backup10.tar.gz mv backup8.tar.gz backup9.tar.gz mv backup7.tar.gz backup8.tar.gz mv backup6.tar.gz backup7.tar.gz mv backup5.tar.gz backup6.tar.gz mv backup4.tar.gz backup5.tar.gz mv backup3.tar.gz backup4.tar.gz mv backup2.tar.gz backup3.tar.gz mv backup1.tar.gz backup2.tar.gz mv backup0.tar.gz backup1.tar.gz cd ../../$FOLDERNAME screen -dmS $SCREENNAME java -Xmx1024M -Xms1024M -jar minecraft_server.jar; sleep 2 if screen -list | grep "$SCREENNAME" > /dev/null then echo "Minecraft server restarted; happy mining!" else echo "ERROR: Minecraft server failed to start!" fi fi; } printCommands (){ echo echo "$0 usage:" echo echo "Start : Starts the server on a detached screen." echo "Stop : Stop the server; includes a 1-minute warning." echo "StopNOW : Stops the server with only a 5-second warning." echo "Restart : Stops the server and starts the server again." echo "Backup : Stops the server (1 min), backs up the world, and restarts." echo "Help : Display this message." } #Forces case-insensitive string comparisons shopt -s nocasematch #Primary 'Switch' if [[ $1 = "start" ]] then startServer elif [[ $1 = "stop" ]] then stopServer elif [[ $1 = "stopnow" ]] then stopServerNow elif [[ $1 = "backup" ]] then backupWorld elif [[ $1 = "restart" ]] then restartServer else printCommands fi

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  • Program for drawing with pen tablet, like Salman Khan's one

    - by Halst
    I do a lot of sketching with my pen-tablet. I use Microsoft Paint in Windows 7, and it is just perfect except for bad anti-aliasing. I found some videos of Salman Khan, where his sketching is really smooth and anti-aliased. Do you know what program he might use? You can see a bit of its interface here: http://www.khanacademy.org/press/chronicle.HTML and some more: http://www.khanacademy.org/ http://khanexercises.appspot.com/video?v=GW8ZPjGlk24 Else, you can recommend me something else. I hope to find something like Microsoft Paint in Windows 7, but anti-aliased, or whatever.

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  • Line-length-tolerant XML diff

    - by Jon Skeet
    I've looked at the answers to this question, and unfortunately none of them has helped me so far. Not to beat about the bush, the second edition of C# in Depth is now in copy edit. I want to be able to see what the copy editor's done really easily, so I can reject or accept his changes. We're using a modified form of docbook, but I'm happy enough looking at the raw XML source. All fine so far - except that when the copy editor makes a change, that can change the line wrapping. So something that used to read: <para>Foo bar baz second line</para> now reads <para>Foo bar grontle baz second line</para> Now the real change here is the insertion of "grontle". I don't care that "baz" has moved from the first line to the second line... but all the diff tools I've seen do. I realise that one option would be to reformat the whole document (or possibly just whole paragraphs) into single lines... but that's then really hard to read, because diff tools don't wrap when they're displaying. I'm sure I can manage with the tools I've got, but if anyone knows of anything better, I'd be really glad to hear about it. I suspect my publishers would too :) (I've included the Windows tag here because I'd really need it to be available on Windows. I'd like to hear about any non-Windows software too, but only in case I could help to build it on Windows :)

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  • Java EE at JavaOne - A Few Picks from a Very Rich Line-up

    - by Janice J. Heiss
    A rich and diverse set of sessions cast a spotlight on Java EE at this year’s JavaOne, ranging from the popular Web Framework Smackdown, to Java EE 6 and Spring, to sessions exploring Java EE 7, and one on the implications of HTML5. Some of the world’s best EE architects and developers will be sharing their insight and expertise. If only I could be at ten places at once!BOF4149 - Web Framework Smackdown 2012    Markus Eisele - Principal IT Architect, msg systems ag    Graeme Rocher - Senior Staff Engineer, VMware    James Ward - Developer Evangelist, Heroku    Ed Burns - Consulting Member of Technical Staff, Oracle    Santiago Pericasgeertsen - Software Engineer, Oracle* Monday, Oct 1, 8:30 PM - 9:15 PM - Parc 55 - Cyril Magnin II/III Much has changed since the first Web framework smackdown, at JavaOne 2005. Or has it? The 2012 edition of this popular panel discussion surveys the current landscape of Web UI frameworks for the Java platform. The 2005 edition featured JSF, Webwork, Struts, Tapestry, and Wicket. The 2012 edition features representatives of the current crop of frameworks, with a special emphasis on frameworks that leverage HTML5 and thin-server architecture. Java Champion Markus Eisele leads the lively discussion with panelists James Ward (Play), Graeme Rocher (Grails), Edward Burns (JSF) and Santiago Pericasgeertsen (Avatar).CON6430 - Java EE and Spring Framework Panel Discussion    Richard Hightower - Developer, InfoQ    Bert Ertman - Fellow, Luminis    Gordon Dickens - Technical Architect, IT101, Inc.    Chris Beams - Senior Technical Staff, VMware    Arun Gupta - Technology Evangelist, Oracle* Tuesday, Oct 2, 10:00 AM - 11:00 AM - Parc 55 - Cyril Magnin II/III In the age of Java EE 6 and Spring 3, enterprise Java developers have many architectural choices, including Java EE 6 and Spring, but which one is right for your project? Many of us have heard the debate and seen the flame wars—it’s a topic with passionate community members, and it’s a vibrant debate. If you are looking for some level-headed discussion, grounded in real experience, by developers who have tried both, then come join this discussion. InfoQ’s Java editors moderate the discussion, and they are joined by independent consultants and representatives from both Java EE and VMWare/SpringSource.BOF4213 - Meet the Java EE 7 Specification Leads   Linda Demichiel - Consulting Member of Technical Staff, Oracle   Bill Shannon - Architect, Oracle* Tuesday, Oct 2, 5:30 PM - 6:15 PM – Parc 55 - Cyril Magnin II/III This is your chance to meet face-to-face with the engineers who are developing the next version of the Java EE platform. In this session, the specification leads for the leading technologies that are part of the Java EE 7 platform discuss new and upcoming features and answer your questions. Come prepared with your questions, your feedback, and your suggestions for new features in Java EE 7 and beyond.CON10656 - JavaEE.Next(): Java EE 7, 8, and Beyond    Ian Robinson - IBM Distinguished Engineer, IBM    Mark Little - JBoss CTO, NA    Scott Ferguson - Developer, Caucho Technology    Cameron Purdy - VP Development, Oracle*Wednesday, Oct 3, 4:30 PM - 5:30 PM - Parc 55 - Cyril Magnin II/IIIIn this session, hear from a distinguished panel of industry and open source luminaries regarding where they believe the Java EE community is headed, starting with Java EE 7. The focus of Java EE 7 and 8 is mostly on the cloud, specifically aiming to bring platform as a service (PaaS) providers and application developers together so that portable applications can be deployed on any cloud infrastructure and reap all its benefits in terms of scalability, elasticity, multitenancy, and so on. Most importantly, Java EE will leverage the modularization work in the underlying Java SE platform. Java EE will, of course, also update itself for trends such as HTML5, caching, NoSQL, ployglot programming, map/reduce, JSON, REST, and improvements to existing core APIs.CON7001 - HTML5 WebSocket and Java    Danny Coward - Java, Oracle*Wednesday, Oct 3, 4:30 PM - 5:30 PM - Parc 55 - Cyril Magnin IThe family of HTML5 technologies has pushed the pendulum away from rich client technologies and toward ever-more-capable Web clients running on today’s browsers. In particular, WebSocket brings new opportunities for efficient peer-to-peer communication, providing the basis for a new generation of interactive and “live” Web applications. This session examines the efforts under way to support WebSocket in the Java programming model, from its base-level integration in the Java Servlet and Java EE containers to a new, easy-to-use API and toolset that are destined to become part of the standard Java platform.

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  • match and export subject line and from header with procmail

    - by Nick
    I would like to use procmail or a combination of procmail and formail to take an email message and match a specific keyword in the Subject: line/header, and if matched, export the contents of the Subject: line/header, and the contents of the From: line/header to a perl script. I have researched this, and have not been able to get this working all the way. I am new to procmail, and I assume I need to use a nesting block, but I am not sure how to get the data and then export it. I have been able to match the subject line and export it to a perl script where it is read via ARGV0, but get lost when trying to export and match multiple fields. I tried subscribing to the procmail listserv, but it appears to be broken. Can someone help me with this, please?

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