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  • Facebook Connect: Error when clicking the Facebook Connect button

    - by Garrett
    I am getting this error when I click on the facebook connect button: API Error Code: 100 API Error Description: Invalid parameter Error Message: next is not owned by the application. I am not too sure how to do this, but I've read all the documentation for facebook connect and came up with this: <?php date_default_timezone_set("America/Toronto"); define('FACEBOOK_APP_ID', '##################'); define('FACEBOOK_SECRET', 'XXXXXXXXXXXXXXXXXXXXXXXXXXXXX'); function get_facebook_cookie($app_id, $application_secret) { if(!isset($_COOKIE['fbs_' . $app_id])) return null; $args = array(); parse_str(trim($_COOKIE['fbs_' . $app_id], '\\"'), $args); ksort($args); $payload = ''; foreach ($args as $key => $value) { if ($key != 'sig') { $payload .= $key . '=' . $value; } } if (md5($payload . $application_secret) != $args['sig']) { return null; } return $args; } $cookie = get_facebook_cookie(FACEBOOK_APP_ID, FACEBOOK_SECRET); ?> <html xmlns="http://www.w3.org/1999/xhtml" xmlns:fb="http://www.facebook.com/2008/fbml"> <head> <!-- JQUERY INCLUDE --> <script src="js/jquery-1.4.2.min.js" type="text/javascript"></script> <!-- FACEBOOK CONNECT INCLUDE --> <script src="http://static.ak.connect.facebook.com/js/api_lib/v0.4/FeatureLoader.js.php/en_US" type="text/javascript"></script> <script type="text/javascript"> <!-- $(document).load(function() { }); FB.init("XXXXXXXXXXXXXXXXXXXXXXx ", "xd_receiver.htm"); FB.Event.subscribe('auth.login', function(response) { window.location.reload(); }); function facebook_onlogin() { FB.getLoginStatus(function(response) { if (response.session) { // logged in and connected user, someone you know fb_login.hide(); } else { // no user session available, someone you dont know } }); } // --> </script> </head> <body> <div id="fb_login"> <fb:login-button onlogin="facebook_onlogin();" v="2">Log In with Facebook</fb:login-button> </div> <?php $user = json_decode(file_get_contents( 'https://graph.facebook.com/me?access_token=' . $cookie['access_token']))->id; ?> </body> </html> how on earth can i get this to work? thanks!

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  • JavaScript: Alternative to JQuery's (dual) Slider control?

    - by GregJohn
    I am using the JQuery Slider control for use as a double sided slider (dual slider). It's a great UI control but I'm looking for an alternative that isn't so "fat". Right now, just for me to use the Slider control, I have to include: JQuery core JQuery UI core JQuery Slider plugin When I both minimize using Google's awesome Closure (minimizer) and GZIP the JavaScript, I'm still at around 29kb. Question: Do any comparable (dual) Slider control exist that isn't such a large download?

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  • unable to login in to phpbb through session of wesite

    - by pramod4u
    With the below code we unable to session ingrate please help us how to integrate is there any modification let give modification. Thank you <?php session_start(); include "conn.php"; include "PHPBB_Login.php"; echo $_SESSION['username']; $data=mysql_query("select * from people where username='".$_SESSION['username']."'"); $data_data=mysql_fetch_array($data); echo $_SESSION['username']; $_SESSION['username']=$data_data['username']; echo $_SESSION['username']; $phpbbq=mysql_query("select user_id from phpbb_users where username='".$data_data['username']."'"); $phpbbr=mysql_fetch_array($phpbbq); //echo $phpbbr['user_id']; $id=$phpbbr['user_id']; $phpbb->login($id ); ?> <? class PHPBB_Login { function PHPBB_Login() { } function login($phpbb_user_id) { $id=$phpbb_user_id ; global $db, $board_config; global $HTTP_COOKIE_VARS, $HTTP_GET_VARS, $SID; // Setup the phpbb environment and then // run through the phpbb login process // You may need to change the following line to reflect // your phpBB installation. require_once('./phpBB-3.0.7-PL1/phpBB3/config.php'); define('IN_PHPBB',true); // You may need to change the following line to reflect // your phpBB installation. $phpbb_root_path = "./phpBB-3.0.7-PL1/phpBB3/"; require_once( $phpbb_root_path . "extension.inc" ); require_once( $phpbb_root_path . "common.php" ); // return session_begin($id,$user_ip, PAGE_INDEX, FALSE, TRUE ); return session_begin($id,$user_ip, PAGE_INDEX, FALSE, $autologin, '0'); } function logout( $session_id, $phpbb_user_id ) { global $db, $lang, $board_config; global $HTTP_COOKIE_VARS, $HTTP_GET_VARS, $SID; // Setup the phpbb environment and then // run through the phpbb login process // You may need to change the following line to reflect // your phpBB installation. require_once( './phpBB-3.0.7-PL1/phpBB3/config.php' ); define('IN_PHPBB',true); // You may need to change the following line to reflect // your phpBB installation. $phpbb_root_path = "./phpBB-3.0.7-PL1/phpBB3/"; require_once( $phpbb_root_path . "extension.inc" ); require_once( $phpbb_root_path . "common.php" ); session_end( $session_id, $phpbb_user_id ); // session_end doesn't seem to get rid of these cookies, // so we'll do it here just in to make certain. setcookie( $board_config[ "cookie_name" ] . "_sid", "", time() - 3600, " " ); setcookie( $board_config[ "cookie_name" ] . "_mysql", "", time() - 3600, " " ); } } ?>

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  • Mail not being sent when using phpmailer

    - by mithunmo
    I am using the following code to send mail to a smtp server . <?php // example on using PHPMailer with GMAIL include("PHPMailer/class.phpmailer.php"); include("PHPMailer/class.smtp.php"); // note, this is optional - gets called from main class if not already loaded $mail = new PHPMailer(); $mail->IsSMTP(); $mail->SMTPAuth = true; // enable SMTP authentication $mail->Host = "mucse491.eu.xxxxx.com"; // sets GMAIL as the SMTP server $mail->Port = 143; // set the SMTP port $mail->Username = "[email protected]"; // GMAIL username $mail->Password = "xxxx"; // GMAIL password $mail->From = "[email protected]"; $mail->FromName = "mithun"; $mail->Subject = "This is the subject"; $mail->AltBody = "This is the body when user views in plain text format"; //Text Body $mail->WordWrap = 50; // set word wrap $mail->AddAddress("[email protected]","First Last"); $mail->IsHTML(true); // send as HTML if(!$mail->Send()) { echo "Mailer Error: " . $mail->ErrorInfo; } else { echo "Message has been sent"; } ?> When I run it from the command line I get the following error PHP Deprecated: Function eregi() is deprecated in C:\wamp\www\phpmailer\class.p hpmailer.php on line 593 Deprecated: Function eregi() is deprecated in C:\wamp\www\phpmailer\class.phpmai ler.php on line 593 PHP Warning: fputs() expects parameter 1 to be resource, integer given in C:\wa mp\www\phpmailer\class.smtp.php on line 213 Warning: fputs() expects parameter 1 to be resource, integer given in C:\wamp\ww w\phpmailer\class.smtp.php on line 213 Mailer Error: SMTP Error: Could not connect to SMTP host. When i run from the browser I get the following error Deprecated: Function eregi() is deprecated in C:\wamp\www\phpmailer\class.phpmailer.php on line 593 Warning: fsockopen() [function.fsockopen]: php_network_getaddresses: getaddrinfo failed: This is usually a temporary error during hostname resolution and means that the local server did not receive a response from an authoritative server. in C:\wamp\www\phpmailer\class.smtp.php on line 122 Warning: fsockopen() [function.fsockopen]: unable to connect to mucse491.xx.xxxxx.com:143 (php_network_getaddresses: getaddrinfo failed: This is usually a temporary error during hostname resolution and means that the local server did not receive a response from an authoritative server. ) in C:\wamp\www\phpmailer\class.smtp.php on line 122 Mailer Error: SMTP Error: Could not connect to SMTP host. Please someone guide me .

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  • Finding date between start date and end date

    - by Pankaj Khurana
    Hi, I want to check whether a date is between start date and end date. i have added a where class where datepaid between '2010-04-01' AND '2010-04-15' but the problem is that it excludes '2010-04-15'. It should include end date also how can i do this? Please help me on this Regards, pankaj

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  • Python 3: regex to split on successions of newline characters

    - by Beau Martínez
    I'm trying to split a string on newline characters (catering for Windows, OS X, and Unix text file newline characters). If there are any succession of these, I want to split on that too and not include any in the result. So, for when splitting the following: "Foo\r\n\r\nDouble Windows\r\rDouble OS X\n\nDouble Unix\r\nWindows\rOS X\nUnix" The result would be: ['Foo', 'Double Windows', 'Double OS X', 'Double Unix', 'Windows', 'OS X', 'Unix'] What regex should I use?

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  • Session Id in url and/or cookie? [closed]

    - by Jacco
    Most people advice against rewriting every (internal) url to include the sessionId (both GET and POST). The standard argument against it seems to be:   If an attacker gets hold of the sessionId, they can hijack the session.   With the sessionId in the url, it easily leaks to the attacker (by referer etc.) But what if you put the sessionId in both an (encrypted) cookie and the url. if the sessionId in either the cookie or the url is missing or if they do not match, decline the request. Let's pretend the website in question is free of xss holes, the cookie encryption is strong enough, etc. etc. Then what is the increased risk of rewriting every url to include the sessionId? UPDATE: @Casper That is a very good point. so up to now there are 2 reasons: bad for search engines / SEO if used in public part of the website can cause trouble when users post an url with a session Id on a forum, send it trough email or bookmark the page apart from the:   It increases the security risk, but it is not clear what the increased risk is. some background info: I've a website that offers blog-like service to travellers. I cannot be sure cookies work nor can I require cookies to work. Most computers in internet cafes are old and not (even close to) up-to-date. The user has no control over them and the connection can be very unreliable for some more 'off the beaten path' locations. Binding the session to an IP-address is not possible, some places use load-balancing proxies with multiple IP addresses. (and from China there is The Great Firewall). Upon receiving the first cookie back, I flag cookies as mandatory. However, if the cookie was flagged as mandatory but not there, I ask for their password once more, knowing their session from the url. (Also cookies have a 1 time token in them, but that's not the point of this question). UPDATE 2: The conclusion seems to be that there are no extra *security* issues when you expose you session id trough the URL while also keeping a copy of the session id in an encrypted cookie. Do not hesitate to add additional information about any possible security implications

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  • Making mercurial subrepositories behave like subversion externals

    - by Emily Dickinson
    Hi guys, The FAQ, and hginit.com have been really useful for helping me make the transition from svn to hg. However, when it comes to using Hg's subrepository feature in the manner of subversion's externals, I've tried everythign and cannot replicate the nice behavior of svn externals. Here's the simplest example of what I want to do: Init "lib" repository This repository is never to be used as a standalone; it's always included by main repositories, as a sub-repository. Init one or more including repositories To keep the example simple, I'll "init" a repository called "main" Have "main" include "lib" as a subrepository Importantly -- AND HERE'S WHAT I CAN'T GET TO WORK: When I modify a file inside of "main/lib", and I push the modification, then that change gets pushed to the "lib" repository -- NOT to a copy inside of "main". Command lines speak louder than words. I've tried so many variations on this theme, but here's the gist. If someone can reply, in command lines, I'll be forever grateful! 1. Init "lib" repository $ cd /home/moi/hgrepos ## Where I'm storing my hg repositories, on my main server $ hg init lib $ echo "foo" lib/lib.txt $ hg add lib $ hg ci -A -m "Init lib" lib 2. Init "main" repository, and include "lib" as a subrepos $ cd /home/moi/hgrepos $ hg init main $ echo "foo" main/main.txt $ hg add main $ cd main $ hg clone ../lib lib $ echo "lib=lib" .hgsub $ hg ci -A -m "Init main" . This all works fine, but when I make a clone of the "main" repository, and make local modifications to files in "main/lib", and push them, the changes get pushed to "main/lib", NOT to "lib". IN COMMAND-LINE-ESE, THIS IS THE PROBLEM: $ /home/moi/hg-test $ hg clone ssh://[email protected]/hgrepos/lib lib $ hg clone ssh://[email protected]/hgrepos/main main $ cd main $ echo foo lib/lib.txt $ hg st M lib.txt $ hg com -m "Modified lib.txt, from inside the main repos" lib.txt $ hg push pushing to ssh://[email protected]/hgrepos/main/lib That last line of output from hg shows the problem. It shows that I've made a modification to a COPY of a file in lib, NOT to a file in the lib repository. If this were working as I'd like it to work, the push would be to hgrepos/lib, NOT to hgrepos/main/lib. I.e., I would see: $ hg push pushing to ssh://[email protected]/hgrepos/lib IF YOU CAN ANSWER THIS IN TERMS OF COMMAND LINES RATHER THAN IN ENGLISH, I WILL BE ETERNALLY GRATEFUL! Thank you in advance! Emily in Portland

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  • Deployment of About.htm with ClickOnce

    - by Melody Friedenthal
    I have a Win app (VB.net 2005) with an About.htm page that comes up when the user presses F1, using a HelpProvider control. The application was deployed using ClickOnce technology. When I release a new version I have to manually copy the About.htm file from my development area to our LAN (specified by the HelpNamespace property of the HelpProvider control). Is there a way I can include this as part of the deployment? Thank you.

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  • Unwanted SDL_QUIT Event on mouseclick.

    - by Anthony Clever
    I'm having a slight problem with my SDL/Opengl code, specifically, when i try to do something on a mousebuttondown event, the program sends an sdl_quit event to the stack, closing my application. I know this because I can make the program work (sans the ability to quit out of it :| ) by checking for SDL_QUIT during my event loop, and making it do nothing, rather than quitting the application. If anyone could help make my program work, while retaining the ability to, well, close it, it'd be much appreciated. Code attached below: #include "SDL/SDL.h" #include "SDL/SDL_opengl.h" void draw_polygon(); void init(); int main(int argc, char *argv[]) { SDL_Event Event; int quit = 0; GLfloat color[] = { 0.0f, 0.0f, 0.0f }; init(); glColor3fv (color); glOrtho(0.0, 1.0, 0.0, 1.0, -1.0, 1.0); draw_polygon(); while(!quit) { while(SDL_PollEvent( &Event )) { switch(Event.type) { case SDL_MOUSEBUTTONDOWN: for (int i = 0; i <= sizeof(color); i++) { color[i] += 0.1f; } glColor3fv ( color ); draw_polygon(); case SDL_KEYDOWN: switch(Event.key.keysym.sym) { case SDLK_ESCAPE: quit = 1; default: break; } default: break; } } } SDL_Quit(); return 0; } void draw_polygon() { glBegin(GL_POLYGON); glVertex3f (0.25, 0.25, 0.0); glVertex3f (0.75, 0.25, 0.0); glVertex3f (0.75, 0.75, 0.0); glVertex3f (0.25, 0.75, 0.0); glEnd(); SDL_GL_SwapBuffers(); } void init() { SDL_Init(SDL_INIT_EVERYTHING); SDL_SetVideoMode( 640, 480, 32, SDL_OPENGL ); glClearColor (0.0, 0.0, 0.0, 0.0); glMatrixMode( GL_PROJECTION | GL_MODELVIEW ); glLoadIdentity(); glClear (GL_COLOR_BUFFER_BIT); SDL_WM_SetCaption( "OpenGL Test", NULL ); } If it matters in this case, I'm compiling via the included compiler with Visual C++ 2008 express.

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  • What is in your Mathematica tool bag?

    - by Timo
    We all know that Mathematica is great, but it also often lacks critical functionality. What kind of external packages / tools / resources do you use with Mathematica? I'll edit (and invite anyone else to do so too) this main post to include resources which are focused on general applicability in scientific research and which as many people as possible will find useful. Feel free to contribute anything, even small code snippets (as I did below for a timing routine). Also, undocumented and useful features in Mathematica 7 and beyond you found yourself, or dug up from some paper/site are most welcome. Please include a short description or comment on why something is great or what utility it provides. If you link to books on Amazon with affiliate links please mention it, e.g., by putting your name after the link. Packages: LevelScheme is a package that greatly expands Mathematica's capability to produce good looking plots. I use it if not for anything else then for the much, much improved control over frame/axes ticks. David Park's Presentation Package ($50 - no charge for updates) Tools: MASH is Daniel Reeves's excellent perl script essentially providing scripting support for Mathematica 7. (This is finally built in as of Mathematica 8 with the -script option.) Resources: Wolfram's own repository MathSource has a lot of useful if narrow notebooks for various applications. Also check out the other sections such as Current Documentation, Courseware for lectures, and Demos for, well, demos. Books: Mathematica programming: an advanced introduction by Leonid Shifrin (web, pdf) is a must read if you want to do anything more than For loops in Mathematica. Quantum Methods with Mathematica by James F. Feagin (amazon) The Mathematica Book by Stephen Wolfram (amazon) (web) Schaum's Outline (amazon) Mathematica in Action by Stan Wagon (amazon) - 600 pages of neat examples and goes up to Mathematica version 7. Visualization techniques are especially good, you can see some of them on the author's Demonstrations Page. Mathematica Programming Fundamentals by Richard Gaylord (pdf) - A good concise introduction to most of what you need to know about Mathematica programming. Undocumented (or scarcely documented) Features: How to customize Mathematica keyboard shortcuts. See this question. How to inspect patterns and functions used by Mathematica's own functions. See this answer How to achieve Consistent size for GraphPlots in Mathematica? See this question.

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  • Objective-C Xcode: Prefix.pch question?

    - by Johannes Jensen
    I have two files independant on each other. Let's just call it Class1 and Class2. In Class1, I need Class2, and in Class2 I need Class1. I have a prefix file where I include all my files, and I get some syntax errors because I do #import "Class1.h" #import "Class2.h" How would I define both of them so they can use each other? What am I doing wrong?

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  • How to fix these compiler errors?

    - by Sandra Schlichting
    I have this source code from 2001 that I would like to compile. It gives this: $ make g++ -O99 -Wall -DLINUX -pedantic -c -o audio.o audio.cpp In file included from audio.cpp:7: audio.h:14: error: use of enum ‘mad_flow’ without previous declaration audio.h:15: error: use of enum ‘mad_flow’ without previous declaration audio.h:17: error: use of enum ‘mad_flow’ without previous declaration audio.cpp: In function ‘mad_flow audio::input(void*, mad_stream*)’: audio.cpp:19: error: new declaration ‘mad_flow audio::input(void*, mad_stream*)’ audio.h:14: error: ambiguates old declaration ‘int audio::input(void*, mad_stream*)’ audio.h:11: error: ‘size_t audio::stream::BufferPos’ is private audio.cpp:23: error: within this context audio.h:11: error: ‘size_t audio::stream::BufferSize’ is private audio.cpp:23: error: within this context audio.h:10: error: ‘char* audio::stream::Buffer’ is private audio.cpp:26: error: within this context audio.h:11: error: ‘size_t audio::stream::BufferSize’ is private audio.cpp:26: error: within this context audio.h:11: error: ‘size_t audio::stream::BufferPos’ is private audio.cpp:27: error: within this context audio.h:11: error: ‘size_t audio::stream::BufferSize’ is private audio.cpp:27: error: within this context audio.cpp: In function ‘mad_flow audio::output(void*, const mad_header*, mad_pcm*)’: audio.cpp:49: error: new declaration ‘mad_flow audio::output(void*, const mad_header*, mad_pcm*)’ audio.h:15: error: ambiguates old declaration ‘int audio::output(void*, const mad_header*, mad_pcm*)’ audio.cpp: In function ‘mad_flow audio::error(void*, mad_stream*, mad_frame*)’: audio.cpp:83: error: new declaration ‘mad_flow audio::error(void*, mad_stream*, mad_frame*)’ audio.h:17: error: ambiguates old declaration ‘int audio::error(void*, mad_stream*, mad_frame*)’ audio.cpp: In constructor ‘audio::stream::stream(const char*)’: audio.cpp:119: error: ‘input’ was not declared in this scope audio.cpp:122: error: ‘output’ was not declared in this scope audio.cpp:123: error: ‘error’ was not declared in this scope make: *** [audio.o] Error 1 audio.h contains #include <stdlib.h> #include "mad.h" namespace audio { class stream { private: char* Buffer; size_t BufferSize, BufferPos; struct mad_decoder Decoder; friend enum mad_flow input(void* Data, struct mad_stream* MadStream); friend enum mad_flow output(void* Data, const struct mad_header* Header, struct mad_pcm* PCM); friend enum mad_flow error(void* Data, struct mad_stream* MadStream, struct mad_frame* Frame); public: stream(const char* FileName); ~stream(); void play(); }; } I have tried to just insert enum mad_flow {}; but that just gave a new problem. Can anyone see how to fix this?

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  • Xammp and Zend Library Conflicts

    - by Kieran
    Im trying to use the Zend Frameworks ACL library in my code (in codeigniter) and after including the library in my controller I get this error: Fatal error: Cannot redeclare class Zend_Acl in C:\xampp\php\PEAR\Zend\Acl.php on line 48 If I remove the include to the Zend library I get this error instead Fatal error: Class 'Zend_Acl' not found in C:\xampp\htdocs\ISU-Cart\system\application\libraries\acl.php on line 3 Any help on this?

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  • un able to phpbb session login through my own website

    - by pmms
    We are unable to login phpbb through my own site using session. please help us. <?php session_start(); include "conn.php"; include "PHPBB_Login.php"; echo $_SESSION['username']; $data=mysql_query("select * from people where username='".$_SESSION['username']."'"); $data_data=mysql_fetch_array($data); echo $_SESSION['username']; $_SESSION['username']=$data_data['username']; echo $_SESSION['username']; $phpbbq=mysql_query("select user_id from phpbb_users where username='".$data_data['username']."'"); $phpbbr=mysql_fetch_array($phpbbq); //echo $phpbbr['user_id']; $id=$phpbbr['user_id']; $phpbb-login($id ); class PHPBB_Login { function PHPBB_Login() { } function login($phpbb_user_id) { $id=$phpbb_user_id ; global $db, $board_config; global $HTTP_COOKIE_VARS, $HTTP_GET_VARS, $SID; // Setup the phpbb environment and then // run through the phpbb login process // You may need to change the following line to reflect // your phpBB installation. require_once('./phpBB-3.0.7-PL1/phpBB3/config.php'); define('IN_PHPBB',true); // You may need to change the following line to reflect // your phpBB installation. $phpbb_root_path = "./phpBB-3.0.7-PL1/phpBB3/"; require_once( $phpbb_root_path . "extension.inc" ); require_once( $phpbb_root_path . "common.php" ); // return session_begin($id,$user_ip, PAGE_INDEX, FALSE, TRUE ); return session_begin($id,$user_ip, PAGE_INDEX, FALSE, $autologin, '0'); } function logout( $session_id, $phpbb_user_id ) { global $db, $lang, $board_config; global $HTTP_COOKIE_VARS, $HTTP_GET_VARS, $SID; // Setup the phpbb environment and then // run through the phpbb login process // You may need to change the following line to reflect // your phpBB installation. require_once( './phpBB-3.0.7-PL1/phpBB3/config.php' ); define('IN_PHPBB',true); // You may need to change the following line to reflect // your phpBB installation. $phpbb_root_path = "./phpBB-3.0.7-PL1/phpBB3/"; require_once( $phpbb_root_path . "extension.inc" ); require_once( $phpbb_root_path . "common.php" ); session_end( $session_id, $phpbb_user_id ); // session_end doesn't seem to get rid of these cookies, // so we'll do it here just in to make certain. setcookie( $board_config[ "cookie_name" ] . "_sid", "", time() - 3600, " " ); setcookie( $board_config[ "cookie_name" ] . "_mysql", "", time() - 3600, " " ); } } ?

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  • Generating moderately interesting images

    - by Williham Totland
    Abstract: Can you propose a mathematical-ish algorithm over a plane of pixels that will generate a moderately interesting image, preferably one that on the whole resembles something? The story thus far: Once upon a time I decided in an effort to reduce cycle waste on my (admittedly too) numerous computers, and set out to generate images in a moderately interesting fashion; using a PRNG and some clever math to create images that would, on the whole, resemble something. Or at least, that was the plan. As it turns out, clever math requires being a clever mathematician; this I am not. At some length I arrived at a method that preferred straight lines (as these are generally the components of which our world is made), perhaps too strongly. The result is mildly interesting; resembling, perhaps, city grids as such: Now for the question proper: Given the source code of this little program; can you improve upon it and propose a method that gives somewhat more interesting results? (e.g. not city grids, but perhaps faces, animals, geography, what have you) This is also meant as a sort of challenge; I suppose and as such I've set down some completely arbitrary and equally optional rules: The comments in the code says it all really. Suggestions and "solutions" should edit the algorithm itself, not the surrounding framework, except as for to fix errors that prevents the sample from compiling. The code should compile cleanly with a standard issue C compiler. (If the example provided doesn't, oops! Tell me, and I'll fix. :) The method should, though again, this is optional, not need to elicit help from your friendly neighborhood math library. Solutions should probably be deliverable by simply yanking out whatever is between the snip lines (the ones that say you should not edit above and below, respectively), with a statement to the effect of what you need to add to the preamble in particular. The code requires a C compiler and libpng to build; I'm not entirely confident that the MinGW compiler provides the necessities, but I would be surprised if it didn't. For Debian you'll want the libpng-dev package, and for Mac OS X you'll want the XCode tools.. The source code can be downloaded here. Warning: Massive code splurge incoming! // compile with gcc -o imggen -lpng imggen.c // optionally with -DITERATIONS=x, where x is an appropriate integer // If you're on a Mac or using MinGW, you may have to fiddle with the linker flags to find the library and includes. #include <stdio.h> #include <stdlib.h> #include <png.h> #ifdef ITERATIONS #define REPEAT #endif // ITERATIONS // YOU MAY CHANGE THE FOLLOWING DEFINES #define WIDTH 320 #define HEIGHT 240 // YOU MAY REPLACE THE FOLLOWING DEFINES AS APPROPRIATE #define INK 16384 void writePNG (png_bytepp imageBuffer, png_uint_32 width, png_uint_32 height, int iteration) { char *fname; asprintf(&fname, "out.%d.png", iteration); FILE *fp = fopen(fname, "wb"); if (!fp) return; png_structp png_ptr = png_create_write_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL); png_infop info_ptr = png_create_info_struct(png_ptr); png_init_io(png_ptr, fp); png_set_filter(png_ptr, PNG_FILTER_TYPE_DEFAULT, PNG_FILTER_NONE); png_set_compression_level(png_ptr, Z_BEST_COMPRESSION); png_set_IHDR(png_ptr, info_ptr, width, height, 8, PNG_COLOR_TYPE_GRAY, PNG_INTERLACE_NONE, PNG_COMPRESSION_TYPE_DEFAULT, PNG_FILTER_TYPE_DEFAULT); png_set_rows(png_ptr, info_ptr, imageBuffer); png_set_invert_mono(png_ptr); /// YOU MAY COMMENT OUT THIS LINE png_write_png(png_ptr, info_ptr, PNG_TRANSFORM_IDENTITY, NULL); png_destroy_write_struct(&png_ptr, &info_ptr); fclose(fp); free(fname); } int main (int argc, const char * argv[]) { png_uint_32 height = HEIGHT, width = WIDTH; int iteration = 1; #ifdef REPEAT for (iteration = 1; iteration <= ITERATIONS; iteration++) { #endif // REPEAT png_bytepp imageBuffer = malloc(sizeof(png_bytep) * height); for (png_uint_32 i = 0; i < height; i++) { imageBuffer[i] = malloc(sizeof(png_byte) * width); for (png_uint_32 j = 0; j < width; j++) { imageBuffer[i][j] = 0; } } /// CUT ACROSS THE DASHED LINES /// ------------------------------------------- /// NO EDITING ABOVE THIS LINE; EXCEPT AS NOTED int ink = INK; int x = rand() % width, y = rand() % height; int xdir = (rand() % 2)?1:-1; int ydir = (rand() % 2)?1:-1; while (ink) { imageBuffer[y][x] = 255; --ink; xdir += (rand() % 2)?(1):(-1); ydir += (rand() % 2)?(1):(-1); if (ydir > 0) { ++y; } else if (ydir < 0) { --y; } if (xdir > 0) { ++x; } else if (xdir < 0) { --x; } if (x == -1 || y == -1 || x == width || y == height || x == y && x == 0) { x = rand() % width; y = rand() % height; xdir = (rand() % 2)?1:-1; ydir = (rand() % 2)?1:-1; } } /// NO EDITING BELOW THIS LINE /// ------------------------------------------- writePNG(imageBuffer, width, height, iteration); for (png_uint_32 i = 0; i < height; i++) { free(imageBuffer[i]); } free(imageBuffer); #ifdef REPEAT } #endif // REPEAT return 0; } Note: While this question doesn't strictly speaking seem "answerable" as such; I still believe that it can give rise to some manner of "right" answer. Maybe. Happy hunting.

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  • Google Charts Over HTTPS

    - by swt83
    I'm trying to load charts as images in a secured site. An example of a Google Chart image over https would be this: https://www.google.com/chart?cht=lc&chs=200x125&chd=s:helloWorld The problem is that while you can load an image like this by directly clicking the link, you can't include it as an image in your page. It just won't load. Any idea on how to bypass this? Or solution generally using PHP?

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  • poco Lib dosnt compile in vs express 9

    - by user63898
    Hello all im trying to compile the poco lib in vs express 2008 but im keep getting this error : poco-1.3.6p2\foundation\src\eventlogchannel.cpp(40) : fatal error C1083: Cannot open include file: 'pocomsg.h': No such file or directory no i have the mc.exe in my sdk and all the paths in the IDE are seams to be right and nada . does any one have experience with this lib ?

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  • iReport ejbql connection

    - by Nayan Wadekar
    I want to create ejbql connection in iReport, i have added all the related jars. Set the classpath to include the META-INF directory containing persistence.xml & jars. On testing connection it shows nothing, but in console it prints "java.lang.NoClassDefFoundError: Could not initialize class org.hibernate.ejb.event.EJB3PersistEventListener null". Jar containing this class I have already added. persistence.xml content : persistence-unit name="hrmsPU" transaction-type="JTA" provider org.hibernate.ejb.HibernatePersistence provider jta-data-source java:hrmsDS jta-data-source persistence-unit

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  • Is there a syntax highlighting editor component for Mac OS X

    - by Bytenik
    I am looking for a syntax highlighting component that I can include in a Mac OS X XCode project to allow editing of Ruby, C++, Lua, etc. I need a component that is open source or has the source included. My Google searches didn't turn up much in the way of Mac OS X frameworks or components at all, let alone the type I am looking for. Thanks for any pointers!

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  • TeamCity MSBuild 4.0 Help

    - by ChrisKolenko
    Hi guys, I need some help with my MSBuild file i created a while ago. All i want to do is build the solution, publish a project inside the solution and than copy the files to a directory At the moment when i set Teamcity to .net 4 msbuild, msbuild 4.0 tools and for 86 i get an error stating error MSB4067: The element beneath element is unrecognized. <?xml version="1.0" encoding="utf-8" ?> <Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003" DefaultTargets="Run"> <Import Project="$(MSBuildExtensionsPath)\MSBuildCommunityTasks\MSBuild.Community.Tasks.Targets"/> <Import Project="$(MSBuildExtensionsPath)\Microsoft\VisualStudio\v10.0\WebApplications\Microsoft.WebApplication.targets"/> <PropertyGroup> <OutputFolder>$(OutputDir)</OutputFolder> <DeploymentFolder>$(DeploymentDir)</DeploymentFolder> <CompilationDebug /> <CustomErrorsMode /> <ContentEditorsEmail /> <AdministratorsEmail /> </PropertyGroup> <Target Name="Run"> <CallTarget Targets="Compile" /> <CallTarget Targets="Publish" /> <CallTarget Targets="Deploy" /> </Target> <Target Name="Clean"> <ItemGroup> <BinFiles Include="bin\*.*" /> </ItemGroup> <Delete Files="@(BinFiles)" /> </Target> <Target Name="Compile" DependsOnTargets="Clean"> <MSBuild Projects="WebCanvas.ZakisCatering.Website.sln" Properties="Configuration=Release"/> </Target> <Target Name="Publish"> <RemoveDir Directories="$(OutputFolder)" ContinueOnError="true" /> <MSBuild Projects="WebCanvas.ZakisCatering.Website\WebCanvas.ZakisCatering.Website.csproj" Targets="ResolveReferences;_CopyWebApplication" Properties="Configuration=Release;WebProjectOutputDir=$(OutputFolder);OutDir=$(WebProjectOutputDir)\" /> </Target> <Target Name="Deploy"> <RemoveDir Directories="$(DeploymentFolder)" ContinueOnError="true" /> <ItemGroup> <DeploymentFiles Include="$(OutputFolder)\**\*.*" /> </ItemGroup> <Copy SourceFiles="@(DeploymentFiles)" DestinationFolder="$(DeploymentFolder)\%(RecursiveDir)" /> </Target> </Project>

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