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• Is the MySQL FOSS License Exception transitive - does it remove the GPL restrictions for downstream

  - by Eric

  I'm looking at building a MySQL client plugin for a proprietary product, which would violate the GPL as discussed in the FAQ at http://www.gnu.org/licenses/gpl-faq.html#NFUseGPLPlugins However, according to the MySQL FOSS License Exception ("FLE"), discussed at http://www.mysql.com/about/legal/licensing/foss-exception/, you can license an open-source product built with the client with many alternatives. The oursql library (https://launchpad.net/oursql) is BSD-licensed. Is this a valid way around the GPL? By my reading of the FLE, the only clause that refers to downstream uses of derived works is section 2.e: All works that are aggregated with the Program or the Derivative Work on a medium or volume of storage are not derivative works of the Program, Derivative Work or FOSS Application, and must reasonably be considered independent and separate works. This is the case for our product: it is not a derivative work of oursql, and in fact accesses it only via a plugin-driven interface. So is this a valid loophole?

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• Looking for Fiddler2 help. connection to gateway refused? Just got rid of a virus

  - by John Mackey

  I use Fiddler2 for facebook game items, and it's been a great success. I accessed a website to download some dat files I needed. I think it was eshare, ziddu or megaupload, one of those. Anyway, even before the rar file had downloaded, I got this weird green shield in the bottom right hand corner of my computer. It said a Trojan was trying to access my computer, or something to that extent. It prompted me to click the shield to begin anti-virus scanning. It turns out this rogue program is called Antivirus System Pro and is pretty hard to get rid of. After discovering the rogue program, I tried using Fiddler and got the following error: [Fiddler] Connection to Gateway failed.Exception Text: No connection could be made because the target machine actively refused it 127.0.0.1:5555 I ended up purchasing SpyDoctor + Antivirus, which I'm told is designed specifically for getting rid of these types of programs. Anyway, I did a quick-scan last night with spydoctor and malware bytes. Malware picked up 2 files, and Spydoctor found 4. Most were insignificant, but it did find a worm called Worm.Alcra.F, which was labeled high-priority. I don’t know if that’s the Anti-Virus Pro or not, but SpyDoctor said it got rid of all of those successfully. I tried to run Fiddler again before leaving home, but was still getting the "gateway failed" error. Im using the newest version of firefox. When I initially set up the Fiddler 2.2.8.6, I couldn’t get it to run at first, so I found this faq on the internet that said I needed to go through ToolsOptionsSettings and set up an HTTP Proxy to 127.0.0.1 and my Port to 8888. Once I set that up and downloaded this fiddler helper as a firefox add-on, it worked fine. When I turn on fiddler, it automatically takes my proxy setting from no proxy (default) to the 127.0.0.1 with Port 8888 set up. It worked fine until my computer detected this virus. Anyway, hopefully I've given you sufficient information to offer me your best advice here. Like I said, Spydoctor says the bad stuff is gone, so maybe the rogue program made some type of change in my fiddler that I could just reset or uncheck or something like that? Or will I need to completely remove fiddler and those dat files and rar files I downloaded? Any help would be greatly appreciated. Thanks for your time.

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• ILClone on Windows 2000

  - by 00010000

  Does anyone know of any issues with the ILClone() function on Windows 2000? Is it fully supported? MSDN says it runs on Windows 2000 but I have a user reporting that my program will not run on Windows 2000 because of that function. EDIT: I was able to get a hold of a Win2K system and I can confirm the issue. Shell32.dll version installed is 5.0.3700.6705. The error message shown when running the program is: The procedure entry point ILClone could not be located in the dynamic link library SHELL32.DLL

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• GCC destructor behaviour

  - by joveha

  I've noticed a difference in behaviour for gcc's destructor when compiled under linux and crosscompiled with mingw. On linux the destructor will not get called unless the program terminates normally by itself (returns from main). I guess that kind of makes sense if you take signal handlers into account. On Win32 however, the destructor is called if the program is terminated by say a CTRL-C, but not when killed from the Task Manager. Why is this? And what would you suggest to make the destructor get called no matter how the process terminates - on Win32 in particular? Example code: #include <stdio.h> int main(int argc, char **argv) { printf("main\n"); while(1) {} return 0; } __attribute__((destructor)) static void mydestructor(void) { printf("destructor\n"); }

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• Linking Boost to my C++ project in Eclipse

  - by MahlerFive

  I'm trying to get the Boost library working in my C++ projects in Eclipse. I can successfully build when using header-only libraries in Boost such as the example simple program in the "Getting Started" guide using the lambda header. I cannot get my project to successfully link to the regex Boost library as shown later in the guide. Under my project properties - c/c++ build - settings - tool settings tab - libraries, I have added "libboost_regex" to the Libraries box, and "C:\Program Files\boost\boost_1_42_0\bin.v2\libs" to the Library search path box since this is where all the .lib files are. I've even tried adding "libboost_regex-mgw34-mt-d-1_42.lib" to the libraries box instead of "libboost_regex" since that is the exact file name, but this did not work either. I keep getting an error that says "cannot find -llibboost_regex" when I try to build my project. Any ideas as to how I can fix this?

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• Unintentional concatenation in Bison/Yacc grammar.

  - by troutwine

  I am experimenting with lex and yacc and have run into a strange issue, but I think it would be best to show you my code before detailing the issue. This is my lexer: %{ #include <stdlib.h> #include <string.h> #include "y.tab.h" void yyerror(char *); %} %% [a-zA-Z]+ { yylval.strV = yytext; return ID; } [0-9]+ { yylval.intV = atoi(yytext); return INTEGER; } [\n] { return *yytext; } [ \t] ; . yyerror("invalid character"); %% int yywrap(void) { return 1; } This is my parser: %{ #include <stdio.h> int yydebug=1; void prompt(); void yyerror(char *); int yylex(void); %} %union { int intV; char *strV; } %token INTEGER ID %% program: program statement EOF { prompt(); } | program EOF { prompt(); } | { prompt(); } ; args: /* empty */ | args ID { printf(":%s ", $<strV>2); } ; statement: ID args { printf("%s", $<strV>1); } | INTEGER { printf("%d", $<intV>1); } ; EOF: '\n' %% void yyerror(char *s) { fprintf(stderr, "%s\n", s); } void prompt() { printf("> "); } int main(void) { yyparse(); return 0; } A very simple language, consisting of no more than strings and integer and a basic REPL. Now, you'll note in the parser that args are output with a leading colon, the intention being that, when combined with the first pattern of the rule of the statement the interaction with the REPL would look something like this: > aaa aa a :aa :a aaa> However, the interaction is this: > aaa aa a :aa :a aaa aa aa > Why does the token ID in the following rule statement: ID args { printf("%s", $<strV>1); } | INTEGER { printf("%d", $<intV>1); } ; have the semantic value of the total input string, newline included? How can my grammar be reworked so that the interaction I intended?

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• How to get QWebKit to display image?

  - by George Edison

  Okay, I have a Qt executable in the same directory as a file logo.png. I call the following: QString msg("<html><body><img src='logo.png' /></body></html>"); webView->setHtml(msg); where webview is the QWebKit pointer However, when I execute the program, the image does not display. I am executing the program from the directory that the image is in... why won't it display?

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• Unable to call WMP's controls.play() function in VisualBasic

  - by A.J.

  I have the following code: http://pastebin.com/EgjbzqA2 which is basically just a stripped down version of http://www.dreamincode.net/forums/topic/57357-mymusic-player/. I want the program to play one file repeatedly, however, this function doesn't work for some reason. The program plays each file once and then stops. Private Sub Player3_PlayStateChange(ByVal NewState As Integer) Handles Player3.PlayStateChange Static Dim PlayAllowed As Boolean = True Select Case CType(NewState, WMPLib.WMPPlayState) Case WMPLib.WMPPlayState.wmppsReady If PlayAllowed Then Player3.controls.play() End If Case WMPLib.WMPPlayState.wmppsMediaEnded ' Start protection (without it next wouldn't play PlayAllowed = False ' Play track Player3.controls.play() ' End Protection PlayAllowed = True updatePlayer() End Select End Sub

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• Strange execution of get accesor in c#?

  - by Kenji Kina

  I set up a simple program just to test how the code inside a get accessor executes (since I had been having some issues in another project), and found something quite strange: class Program { static void Main(string[] args) { var test = new TestClass(); var testBool = test.TestBool; } } public class TestClass { private bool _testBool = true; public bool TestBool { get { if (_testBool) { Console.WriteLine("true!"); } else { Console.WriteLine("false! WTF!"); } _testBool = false; return _testBool; } } } I expected the output to be true! But what I got instead was true! false! WTF! Just what is going on here?

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• iPhone: Cannot get simulator to generate .gcda profiling data files.

  - by Derek Clarkson

  I'm attempting to profile my code using the iPhone simulator. I've enabled Generate Test Coverage File and Instrument Program Flow and added -lgcov to the linker flags. According to everything I've read that should be all I need to do in terms of setup. Executing the program I can see the .gcno files appearing along side the .o compiled code in the build/.build/Debug-iphonesimulator/.build/Objects-normal/i386 directory. But when I run the app in the simulator I do not get any *.gcda files appearing. My understanding is that these files contain the data from the instrumentation. But I cannot find them anywhere on the computer. I know they can be produced and appear along side the *.gcno files because I have an old trashed buil directory which does have them. I just cannot figure out what I have to do to get them to appear and record the run. Any help appreciated.

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• Printing to STDOUT and log file while removing ANSI color codes

  - by Arrieta

  I have the following functions for colorizing my screen messages: def error(string): return '\033[31;1m' + string + '\033[0m' def standout(string): return '\033[34;1m' + string + '\033[0m' I use them as follows: print error('There was a problem with the program') print "This is normal " + standout("and this stands out") I want to log the output to a file (in addition to STDOUT) WITHOUT the ANSI color codes, hopefully without having to add a second "logging" line to each print statement. The reason is that if you simply python program.py > out then the file out will have the ANSI color codes, which look terrible if you open in a plain text editor. Any advice?

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• C# Changing a constant

  - by Jane T

  I have inherited a small windows form based program written in C# that uses a 'constant' (See below), I need to modify this program so 'PROPERTY_NAME' can be "jobs" and "careers". private const string PROPERTY_NAME = "jobs"; I'm guessing a constant isn't designed to change so should I need to change this. The line above is set once at the top of a class file and then PROPERTY_NAME is used throughout that file. On the main form I would like to add two radio buttons 1 called 'jobs' and one called 'careers' and then change the PROPERTY_NAME in the class file based on which is selected. Would I need to pass the radio button status to the method in the class file? I recall reading that I can't simply read the radio button value from the class file. Many thanks for your advice. Jane

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• Can "\Device\NamedPipe\\Win32Pipes" handles cause "Too many open files" error?

  - by Igor Oks

  Continuing from this question: When I am trying to do fopen on Windows, I get a "Too many open files" error. I tried to analyze, how many open files I have, and seems like not too much. But when I executed Process Explorer, I noticed that I have many open handles with similar names: "\Device\NamedPipe\Win32Pipes.00000590.000000e2", "\Device\NamedPipe\Win32Pipes.00000590.000000e3", etc. I see that the number of these handles is exactly equal to the number of the iterations that my program executed, before it returned "Too many open files" and stopped. I am looking for an answer, what are these handles, and could they actually cause the "Too many open files" error? In my program I am loading files from remote drive, and I am creating TCP/IP connections. Could one of these operations create these handles?

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• How to easily pass a very long string to a worker process under Windows?

  - by sharptooth

  My native C++ Win32 program spawns a worker process and needs to pass a huge configuration string to it. Currently it just passes the string as a command line to CreateProcess(). The problem is the string is getting longer and now it doesn't fit into the 32K characters limitation imposed by Windows. Of course I could do something like complicating the worker process start - I use the RPC server in it anyway and I could introduce an RPC request for passing the configuration string, but this will require a lot of changes and make the solution not so reliable. Saving the data into a file for passing is also not very elegant - the file could be left on the filesystem and become garbage. What other simple ways are there for passing long strings to a worker process started by my program on Windows?

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• Problem building PyGTK on CentOS

  - by Marcelo Cantos

  I am trying to build PyGTK on CentOS for a non-standard Python (2.6, vs the out-of-the-box 2.4). It requires that I first build pygobject. pygobject-2.18.0 fails at the configure step. The error messages is as follows: checking for GLIB - version >= 2.14.0... no *** Could not run GLIB test program, checking why... *** The test program failed to compile or link. See the file config.log for the *** exact error that occured. This usually means GLIB is incorrectly installed. configure: error: maybe you want the pygobject-2-4 branch? I have downloaded, built and successfully installed glib. The config.log file contains the following output: configure:6893: gcc -E conftest.c conftest.c:13:28: error: ac_nonexistent.h: No such file or directory What am I doing wrong?

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• send keystrokes from iphone to PC

  - by Matt Facer

  hi guys. I'm looking to create a simple app which will send keystrokes from an iphone to a PC. I understand that I will need to have a program on my PC "listening"... I've been looking in to AsyncSocket and NSStream, but there are no tutorials which really make it clear to understand. Does anyone know if this is right? I basically want to interact with a program on my PC which listens for keystrokes to control it. Does anyone know of a tutorial or place where I could start to learn this? (I've written iphone apps before, but I am new to networking)

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• F10 isn't working properly in VS2005

  - by torvin

  When project is stopped (not in the debugging state) and you press F10, normally the debugging session starts and VS stops at the entry point (e.g. Program.Main). That always worked for me in VS2005 and works OK in VS2008. But recently that stopped working in my VS2005 - the project just runs as if I pressed F5, so I have to place a breakpoint at Program.Main when I need to stop at the entry point. Though it continues to work as it should in my VS2008. I suspect, that's because I installed Reflector add-in and it changed some settings in VS2005, but I just can't find out which settings. Also, disabling that add-in has no effect on my issue :-( Please help, thanks in advance.

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• Blackberry Application not deploying in simulator from eclipse

  - by Joe

  I wrote a first sample Hello World Program for BB in eclipse using the plugin and everything worked fine. But then I wrote another app, not much different from the first and I went to deploy it and the simulator opened but only the first application was there. I tried loading the .cod file from inside the simulator but that didn't work either. I also tried exiting and resetting the simulator and using the clean.bat file but none of that worked either. Finally I tried to load another sample program I downloaded from RIM and that worked just fine. Help! I'm completely stuck.

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• Programming a loopback-device consisting of several files in Linux

  - by dubbaluga

  Hej, it is relatively easy to use a file for emulating a block-device using losetup in Linux: http://www.walkernews.net/2007/07/01/create-linux-loopback-file-system-on-disk-file/ Can anyone please give me a hint on what to look for in case I want to program my own block-device which is based on several files I'm taking content from? For your understanding, I would like to let's say take bytes 1-500 and 1.000-3.000 from file1 and bytes 501-999 and bytes 3.001 to 5.000 from file2 to offer them as a combined block-device. My prefered programming language is Python and I want to write my program in user-space as much as possible. For Windows I found such an implementation. It's called FileDisk and HttpDisk and it can be found here: http://www.acc.umu.se/~bosse/ Thanks in advance and regards, Rainer

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• Can a DataTemplate be a Page?

  - by dthrasher

  I'm using the MVVM pattern to create a WPF standalone application. My program compiles in Visual Studio 2008, but I frequently get warnings in the editor for my DataTemplates. In my MainWindow.xaml, I've defined the following DataTemplate: <DataTemplate DataType="{x:Type ViewModels:TagViewModel}"> <Views:TagView /> </DataTemplate> Where "TagView" is derived from a Page, rather than an ordinary UserControl. This causes the following message to appear every time I reload the designer in Visual Studio: "Could not create an instance of type 'TagView'. Yet the solution compiles fine and the program seems to work properly. Is this a bug in the Visual Studio 2008 editor? Or am I doing something wrong?

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• C++ - dynamic pointer of array

  - by Eagle

  Hi to all, first i would like to say i am Newbie in C++. As part of my master thesis i am writing a program in C++ which also get as parameters the variables m and d (both integers). Were d is the power of 2 (this means 2^d elements). Parameter m define the number of possible interactions between one element and the total group (2^d elements). The number of possible interactions is computed as following: \kappa = \sum_{i=0}^m\binom{d}{i} (at present i generate vector of vectors for 2^d x \kappa, but my Prof. would like me to create different statistics to different m's. My first though was to to generate a dynamic array of m arrays of different sizes... Then i though of defining a 3-dim array with the biggest needed 2d array, but also program speed is important (e.g d = 20). i would like to ask for your advice how to define such kind of dynamic array that will also be fast. Regards

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• Importing ctype; embedding python in C++ application

  - by Drew

  I'm trying to embed python within a C++ based programming language (CCL: The compuatational control language, not that any of you have heard of it). Thus, I don't really have a "main" function to make calls from. I have made a test .cc program with a main, and when I compile it and run it, I am able to import my own python modules and system modules for use. When I embed my code in my CCL-based program and compile it (with g++), it seems I have most functionality, but I get the import error: ImportError: /usr/lib/python2.6/lib-dynload/_ctypes.so: undefined symbol: PyType_GenericNew Can someone explain this to me and how to go about solving it? It seems like I've linked the objects correctly. Thanks.

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• Python threads all executing on a single core

  - by Rob Lourens

  I have a Python program that spawns many threads, runs 4 at a time, and each performs an expensive operation. Pseudocode: for object in list: t = Thread(target=process, args=(object)) # if fewer than 4 threads are currently running, t.start(). Otherwise, add t to queue But when the program is run, Activity Monitor in OS X shows that 1 of the 4 logical cores is at 100% and the others are at nearly 0. Obviously I can't force the OS to do anything but I've never had to pay attention to performance in multi-threaded code like this before so I was wondering if I'm just missing or misunderstanding something. Thanks.

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• How can I pipe a large amount of data as a runtime argument?

  - by Zombies

  Running an executable JAR on a linux platform here. The program it self works on a somewhat large amount of data, basically a list of URLs... could be up to 2k. Currently I get this from a simple DB call. But I was thinking that instead of creating a new mode and writing SQL to get a new result set and having to redploy everytime, I could just make the program more robust by passing in the result set (the list of URLs) that need to be worked on... so, within a linux environment, is there a pain-free/simple way to get the result set and pass it in dynamically? I know file i/o is one, but it doesn't seem to be effecient because each file has to be named, as well more logic to handle grabbing the correct file, creating a file with a unique name, etc.

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• Line numbering in Visual Studio

  - by Cyclone

  Why doesn't VS have any sort of line numbering? Is there any way to enable it, or a plugin for it? I know, the number of lines of code in a program doesn't matter, but sometimes it is nice to know how long a program is, or what line number something is for reference. I can't seem to find that as an option anywhere, to my surprise. Thanks for the help! This is Visual Studio 2010 Ultimate. (if you have read my older questions, I've been using 2008 Express until now.)

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