November 2013 - Pharo-users

Finding references to traits
by btc＠openinworld.com Nov. 16, 2013

Nov. 16, 2013

If I come in cold to a system and see some class using trait, and then I want to find all classes that use that trait. I have tried a few ways but failed to work it out. The most obvious action "Extended search > references of it" doesn't show them, and neither does any other action I try. How is this done? cheers -ben

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Nautilus + Periscope
by Juraj Kubelka Nov. 16, 2013

Nov. 16, 2013

Hi! Today StÃ©phane mentioned project Periscope (Universal Navigation Sidebar for Nautilus). Does anyone use it or maintain it? It looks like it does not work. Links: - http://forum.world.st/ANN-Periscope-Universal-Navigation-Sidebar-for-Nautil… - http://smalltalkhub.com/#!/~PavelKrivanek/Periscope Cheers, Jura

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[Spec] How to adding my scroll bar
by Gisela Decuzzi Nov. 16, 2013

Nov. 16, 2013

Hello, I have a component that basically contains lot of widgets and I want to add a scroll bar to it. But I didn't find a way to do this. I'm using Pharo 2.0 (I know 3.0 is better but I needed something stable). My spec is a ColumnLayout with lot of rows. Maybe I should use another? Can someone point me where to look at?

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NBOpenGL on Pharo 3.0
by Richard Wettel Nov. 15, 2013

Nov. 15, 2013

Hi CodeCity, the project I am working on is based on NBOpenGL. I'd like to start working on it using Pharo 3, but it seems that NBOpenGL does not work yet with Pharo 3.0. I downloaded from jenkins the latest image with Pharo 3 and tried to execute the following code on Windows 7, 64 bits: GLTTRenderingDemo new openInWorld. but I get a 'No suitable implementation found for initializing OpenGL context for your platform'. It seems that NBGLContextDriver does not have a subclass for Windows 64bits. Did I omit something? Cheers Ricky

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Arduino package extra files
by Bernat Romagosa Nov. 15, 2013

Nov. 15, 2013

Hi list, After successfully installing the Arduino package, I noticed this Getting Started text: *After installing the Arduino packages by evaluating...* * * * ConfigurationOfArduino load.* * * *...you'll need a couple extra support files in order to be able to upload programs to your Arduino board. You can download them from here:* * * * http://www.mediafire.com/?1rep41uygl4rpf1* * * *Extract the contents of that file in the same directory where you have your Pharo image.* But the mediafire link is broken. Where can I get the extra support files? Thanks! Bernat. -- Bernat Romagosa.

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Nautilus + Periscope
by Torsten Bergmann Nov. 14, 2013

Nov. 14, 2013

Pavel wrote: >I fixed the recent experiments with the new Spec versions so now it >should work in Pharo 2.0. It really needs a configuration :-) You mean a configuration like the one I attached :) Did you notice the new "Config+" button on the metacello browser - it helps creating new configs. I also added a postload for plugin registration. Feel free to use and put into your STHub repo. I found two bugs in Periscope using Pharo2.0 #20627: 1. When one enters "Obj" to search for object it crashes in the spotlight 2. When one opens tools like the Configuration browser they show up inside of the area of Periscope... If this gets fixed and config gets usable for Pharo 2.0 then do not forget to add the updated config also to "MetaRepoForPharo20" on SS3. This way it will show up in the config browser and can easily be loaded. Thx T.

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Re: [Pharo-users] [Pharo-dev] State of Flamel?
by Stephan Eggermont Nov. 14, 2013

Nov. 14, 2013

On 14 nov. 2013, at 19:39, StÃ©phane Ducasse <stephane.ducasse(a)inria.fr> wrote: > Gisela is busy preparing a workshop in argentina and working. > Now did you try to load it? > I do not know if there is an automated jenkins build. Gisela contacted me, and I managed to load the newest version. AST-Core is changed in Flamel by adding instance variables to RBProgramNode. That breaks each time AST-Core changes in Pharo. Still 2 failing tests (already on Trello), and the transformation needs work. Stephan

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Re: [Pharo-users] NBOpenGL on Pharo 3.0
by Jean Baptiste Arnaud Nov. 14, 2013

Nov. 14, 2013

On Nov 14, 2013, at 5:39 PM, Ronie Salgado <roniesalg(a)gmail.com> wrote: > Still having problems with NBOpenGL under Linux. > > First I'm getting a message not understood for NativeBoostConstants mac32PlaformId under NBMacGLContextDriver>>supportsCurrentPlatform. Its fixed by adding the missing 't' to mac32PlaformId, becoming mac32PlatformId. I think your image is outdated ... That is a really old bug. " Name: NBOpenGL-Mac-IgorStasenko.3 Author: IgorStasenko Time: 14 March 2013, 4:16:19.35 pm UUID: d0575b2c-ffc1-4cce-ac2a-3215ae53c599 Ancestors: NBOpenGL-Mac-IgorStasenko.2 - fix typo with mac32PlaformId => mac32PlatformId " But check your openGL version maybe not the right one. How do you load openGL ? ConfigurationOfOpenGL project load: '3.0' ? ==> you should use this one. > Then, after changing that I'm receiving a "function unavailable" error. Looking at the code I notice that it looks for libGL.so under /usr/lib/libGL.so. In modern versions of 64 bits Ubuntu, and Linux Mint which is derived from Ubuntu, libGL.so is not placed under /usr/lib, instead is placed in a driver dependent folder, which is referenced by a config file in /etc/ld.so.conf.d/ . With a mesa driver, the OpenGL library is at /usr/lib/i386-linux-gnu/mesa/libGL.so.1 , so the driver shared object path cannot be hardcoded. The path problem is a know issue, yes. If you have a good solution. But yes basically you have to update manually the pass in the moduleName variable. > Changing the module name for 'libGL.so.1', doesn't work, but changing it for '/usr/lib/i386-linux-gnu/mesa/libGL.so.1' gives me an 'unable to resolve external type: GLXDrawable', adding NBGLXTypes into the pool dictionaries of NBGlxAPI solves it. I fix that too. > After changing that, it tries to create a multisampled framebuffer, however it doesn't check the maximum number of samples supported. My machine reports GL_EXT_framebuffer_multisample as supported, but the FBO created is not complete. I modified the creation code to use only 1 sample for multisampling and its works. > Using those hacks makes it work under a 64 bits Linux. Still, whenever I run an example, I'm getting a top level window that doesn't does nothing, which is annoying. Closing the windows doesn't break the running OpenGL application. > > Greetings, > Ronie Salgado > > > 2013/11/14 Jean Baptiste Arnaud <jbaptiste.arnaud(a)gmail.com> > Good news everyone: > bug fixed and integrated in 3,0 573 > I am open for new feedback. > > > On Nov 14, 2013, at 2:56 PM, Igor Stasenko <siguctua(a)gmail.com> wrote: > >> >> >> >> On 14 November 2013 14:25, Jean Baptiste Arnaud <jbaptiste.arnaud(a)gmail.com> wrote: >> Yes the fix is not integrated yet. >> NBWndClassEx should not be a variable subclass anymore. This part should be checked with Igor. >> >> NBWndClassEx>>#initialize >> self cbSize: (self class instanceSize). >> and not self basicSize. >> >> ah, yes, of couse since before NBWndClassEx was var-byte and its basicSize >> was always == instanceSize, but now it is no longer like that and >> you need to use longer expression e.g. (self class instanceSize) >> >> You can rebuildField accessor too (class side on every NBExternalStructure). >> >> Do this change and your image should work. (with the last openGL-Win) >> I can take you a picture of my computer. >> >> For more accurate answer I need the crash.dump >> >> >> On Nov 14, 2013, at 1:47 PM, Tudor Girba <tudor(a)tudorgirba.com> wrote: >> >>> Hi, >>> >>> As I understand there are still some things to be integrated in NativeBoost. Indeed, I just tried now with Ricky, and version 3.0 of NBOpenGL crashes the VM (on Win 7) when doing: >>> GLTTRenderingDemo new openInWorld. >>> >>> Could you point us to the NativeBoost fix to see if it works? >>> >>> Doru >>> >>> >>> On Thu, Nov 14, 2013 at 1:21 PM, Jean Baptiste Arnaud <jbaptiste.arnaud(a)gmail.com> wrote: >>> Should work after integration. >>> Configuration updated. >>> Need fix review for integration in nativeBoost, will do that with igor this afternoon. >>> >>> >>> On Nov 14, 2013, at 12:58 PM, Jean Baptiste Arnaud <jbaptiste.arnaud(a)gmail.com> wrote: >>> >>>> ok I have openGL work on my windows 7 machine. >>>> I will update the configuration. But I need to publish also a fix in NativeBoost win. >>>> This bug is the same related to the VM crash in Pharo dev : [Pharo-dev] NBOpenGL VM crash. >>>> >>>> I open a bug entry. When It will be integrated. >>>> Window should work well. But if you have any trouble, give me feedback. >>>> >>>> >>>> On Nov 14, 2013, at 12:01 PM, StÃ©phane Ducasse <stephane.ducasse(a)inria.fr> wrote: >>>> >>>>> so richie >>>>> >>>>> have a look at the repository and load the latest version to see if they work (not using the configuration). >>>>> This is what we will try here (chile). >>>>> >>>>> Stef >>>>> >>>>> On Nov 14, 2013, at 9:58 AM, Richard Wettel <wettel(a)gmail.com> wrote: >>>>> >>>>>> Thanks everyone! That would be great. >>>>>> Looking forward to having NBOpenGL up and running again. >>>>>> >>>>>> Cheers >>>>>> Ricky >>>>>> >>>>>> >>>>>> On Thu, Nov 14, 2013 at 2:29 AM, StÃ©phane Ducasse <stephane.ducasse(a)inria.fr> wrote: >>>>>>>> >>>>>>>> Right now it cannot even be loaded into 3.0. >>>>>>>> But update is simple (i think JB did that already, just not published?). >>>>>>> Grrr, all my code are published ^^. >>>>>> >>>>>> Where? When did you announce it? >>>>>> Sorry but how can you expect guys from the other part of the planet to know it. >>>>>> Communication in open-source is important because people do not know what others >>>>>> are doing. >>>>>> You know richie asked and ronie too and they are smart guys. But they cannot guess. >>>>>> >>>>>>> For mac: >>>>>>> I do the change for mac last month because I needed it, it is integrated. >>>>>> >>>>>> ah ok this is why it is working on mac. >>>>>> >>>>>>> For linux: >>>>>>> I fix, published, tested and updated the configuration for linux 2 days ago, because Alex ask me. >>>>>>> On my roommate computer that work (ubuntu ). >>>>>>> But I need feedback. >>>>>> >>>>>> oki we will check that tomorrow I hope. >>>>>> >>>>>>> For windows: >>>>>>> I publish a fix for window yesterday:NBOpenGL-Win-jeanbaptistearnaud.9 but I do not update configuration because I cannot test it. >>>>>>> I was planned to go test and debug on my home computer (window 7, 64), tomorrow. >>>>>> >>>>>> Ok we can say it to ronie to have a look. >>>>>> >>>>>>> So, you can expect a fix integrated soon. >>>>>>> >>>>>>> And having a working OpenGL, exactly as it work in pharo 2.0. >>>>>> >>>>>> Excellent. >>>>>> >>>>>>> >>>>>>> >>>>>>>> >>>>>>>>> I have already looked at Roassal 3d, but it was not easy to separate the API from the code. >>>>>>>> >>>>>>>> Strange because even me I could see that the shadder code should not be in Roassal 3D but in NBOpenGL :). >>>>>>>> Because Roassal 3d should not be about shadder but about 3D. >>>>>>>> >>>>>>>>> And it is something completely different than what I have been using (and SourceCity, too), because Roassal 3d is using the modern OpenGL methodology (with FBOs and stuff). >>>>>>>> >>>>>>>> Yes they changed the API and deprecated the old way of doing it. >>>>>>> >>>>>>> I will also publish some example (using shadder) that I wrote but it is still not yet user friendly. >>>>>>> >>>>>>> >>>>>>>>> So, I would really appreciate if that API would find its way from Roassal to NBOpenGL and I could use it for CodeCity. >>>>>>>> >>>>>>>> See below >>>>>>>> >>>>>>>>> Unfortunately I am able to help a lot with that, because I know very little about this and I also don't have enough time (I am doing CodeCity in my spare time). But, if you have concrete things that I can do, I'd be happy to help. >>>>>>>> >>>>>>> >>>>>>>> Three remarks: >>>>>>>> - I know that jean-baptiste worked on moving part of roassal3d to NBOpenGL >>>>>>> >>>>>>> Shader part are done for now. >>>>>>> >>>>>>>> - I'm not sure that doing 3d without investing a bit in the underlying technology is wise. Because you will be always relying >>>>>>>> on other people and probably frustrated when things are not working. >>>>>>> + 1 >>>>>>> >>>>>>>> - Since JB does not know how to communicate here is what he did for fun instead of pushing MoosePython :) >>>>>>>> a renderer to video to videos stream for openGL -> MKV, mp4 based one ffmpeg). The code is openGL extra. As an example you >>>>>>>> can get >>>>>>>> https://www.dropbox.com/sh/uyli3tx3drendvj/qzA_Hy0jnk \ >>>>>>> >>>>>>>> >>>>>>> >>>>>>> yes, my bad. >>>>>>> >>>>>>>> Now again if nobody builds a jun like library in Pharo it will not exist. >>>>>>> >>>>>>>> >>>>>>>> Stef >>>>>>>> >>>>>>>> >>>>>>>> >>>>>>>>> Cheers >>>>>>>>> Ricky >>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>>> On Wed, Nov 13, 2013 at 9:44 AM, Tudor Girba <tudor(a)tudorgirba.com> wrote: >>>>>>>>> Hi, >>>>>>>>> >>>>>>>>> I guess that what Ricky is asking is what changed between NBOpenGL 2.0 and 3.0 such that this does not work anymore on Windows. The fact that he mentioned 64 bits is not relevant for this discussion :). >>>>>>>>> >>>>>>>>> I also guess he wants to put some effort into understanding this as well but he needs a bit of guidance. Right Ricky? >>>>>>>>> >>>>>>>>> Cheers, >>>>>>>>> Doru >>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>>> On Tue, Nov 12, 2013 at 2:12 PM, StÃ©phane Ducasse <stephane.ducasse(a)inria.fr> wrote: >>>>>>>>> Richard >>>>>>>>> >>>>>>>>> you should have a look at ROASSAL 3d because ronie improved the shadder part (no more assembler) >>>>>>>>> and his code should be split in two and one part should go to NBOpenGL. >>>>>>>>> Now he is experiencing some problem with NBOpenGL on windows as you. >>>>>>>>> >>>>>>>>> NativeBoost does not work on 64 bits. Yet but igor is really busy finishing the texteditor (and I can tell you that >>>>>>>>> he does not have fun there). >>>>>>>>> >>>>>>>>> So it is important that you help because we are FULL >>>>>>>>> and sorry about that but really FULL. >>>>>>>>> >>>>>>>>> Ronie will visit us in January and share an office with igor. >>>>>>>>> >>>>>>>>> Stef >>>>>>>>> >>>>>>>>> >>>>>>>>> > Hi >>>>>>>>> > >>>>>>>>> > CodeCity, the project I am working on is based on NBOpenGL. >>>>>>>>> > I'd like to start working on it using Pharo 3, but it seems that NBOpenGL does not work yet with Pharo 3.0. >>>>>>>>> > >>>>>>>>> > I downloaded from jenkins the latest image with Pharo 3 and tried to execute the following code on Windows 7, 64 bits: >>>>>>>>> > >>>>>>>>> > GLTTRenderingDemo new openInWorld. >>>>>>>>> > >>>>>>>>> > but I get a 'No suitable implementation found for initializing OpenGL context for your platform'. >>>>>>>>> > It seems that NBGLContextDriver does not have a subclass for Windows 64bits. Did I omit something? >>>>>>>>> > >>>>>>>>> > Cheers >>>>>>>>> > Ricky >>>>>>>>> > >>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>>> -- >>>>>>>>> www.tudorgirba.com >>>>>>>>> >>>>>>>>> "Every thing has its own flow" >>>>>>>>> >>>>>>>> >>>>>>>> >>>>>>>> >>>>>>>> >>>>>>>> -- >>>>>>>> Best regards, >>>>>>>> Igor Stasenko. >>>>>>> >>>>>>> Best Regards >>>>>>> Jean Baptiste Arnaud >>>>>>> jbaptiste.arnaud(a)gmail.com >>>>>>> >>>>>>> >>>>>>> >>>>>>> >>>>>>> >>>>>>> >>>>>>> >>>>>> >>>>>> >>>>> >>>> >>>> >>>> Best Regards >>>> Jean Baptiste Arnaud >>>> jbaptiste.arnaud(a)gmail.com >>>> >>>> >>>> >>>> >>>> >>>> >>>> >>> >>> >>> Best Regards >>> Jean Baptiste Arnaud >>> jbaptiste.arnaud(a)gmail.com >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> -- >>> www.tudorgirba.com >>> >>> "Every thing has its own flow" >> >> >> Best Regards >> Jean Baptiste Arnaud >> jbaptiste.arnaud(a)gmail.com >> >> >> >> >> >> >> >> >> >> >> -- >> Best regards, >> Igor Stasenko. > > > Best Regards > Jean Baptiste Arnaud > jbaptiste.arnaud(a)gmail.com > > > > > > > > Best Regards Jean Baptiste Arnaud jbaptiste.arnaud(a)gmail.com

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NBOpenGL on Pharo 3.0
by Torsten Bergmann Nov. 14, 2013

Nov. 14, 2013

Jean Baptiste Arnaud wrote >Good news everyone: > bug fixed and integrad I also merged the #12161 issue that is now also in Pharo 3.0#30573 into the official "NativeBoost-Win32" package on STHub so it will not appear again when next NB version comes out or is loaded into the image. Thx T.

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Re: [Pharo-users] i18n - Where to start?
by Stephan Eggermont Nov. 14, 2013

Nov. 14, 2013

With the QCMagritte image (from the pharo contributions ci). That has build-in support for translations. Just start it and open the web demo Stephan

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i18n - Where to start?
by Bahman Movaqar Nov. 14, 2013

Nov. 14, 2013

Hi all, Would anyone share a pionter to how to do i18n in Pharo for translating the messages used in a Pharo application (web or desktop)? TIA, -- Bahman Movaqar (http://BahmanM.com) ERP Evaluation, Implementation & Deployment Consultant PGP Key ID: 0x6AB5BD68 (keyserver2.pgp.com)

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Current 3.0 download is broken
by Johan Fabry Nov. 14, 2013

Nov. 14, 2013

Hi all, I wanted to toy around with 3.0 for a moment today, so I downloaded the last image from http://files.pharo.org/image/30/Pharo-Image-3.0-latest.zip It is unresponsive with 100% CPU usage. I thought it was a VM issue of mine, so I downloaded the installer , and this has the same issue. I This is MacOS, I'm still on 10.8.5, I attach PharoDebug.log below for your perusal Greetings, ---> Save our in-boxes! http://emailcharter.org <--- Johan Fabry - http://pleiad.cl/~jfabry PLEIAD lab - Computer Science Department (DCC) - University of Chile

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Lock free structures in Pharo
by Stephan Eggermont Nov. 14, 2013

Nov. 14, 2013

Reading this code, made me wonder what operations are actually atomic. Anyone having a good explanation? Stephan AtomicQueueItem>makeCircular "Make a receiver circular, i.e. point to itself, answer the old value of next variable. Note, this operation should be atomic" | temp | " atomic swap here" temp := next. next := self. ^ temp

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Who uses poolDictionaries? New class template cleanup
by Johan Fabry Nov. 14, 2013

Nov. 14, 2013

Hi all, I am preparing slides for a course. I came to the typical: Number subclass: #Complex instanceVariableNames: 'real imaginary' classVariableNames: '' poolDictionaries: '' category: 'ComplexNumbers' Which made me think: Who uses poolDictionaries? I suspect extremely few of us. Why not add this to Class: Class>>subclass: aSymbol instanceVariableNames: instVarNames classVariableNames: classVarNames category: aSymbol ^self subclass: aSymbol instanceVariableNames: instVarNames classVariableNames: classVarNames poolDictionaries: '' category: aSymbol And have the new class template as follows? Object subclass: #NameOfSubclass instanceVariableNames: '' classVariableNames: '' category: 'Kernel-Classes' It would be a bit cleaner. I know us old timers don't even see the poolDictionaries: line anymore, but I dislike having to explain it to students. Greetings, ---> Save our in-boxes! http://emailcharter.org <--- Johan Fabry - http://pleiad.cl/~jfabry PLEIAD lab - Computer Science Department (DCC) - University of Chile

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Settings > Network > Blab email
by btc＠openinworld.com Nov. 14, 2013

Nov. 14, 2013

In Settings I just noticed Network > Blab email. The description is not very description-able. What is it? cheers -ben

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Lock free structures in Pharo
by Stephan Eggermont Nov. 14, 2013

Nov. 14, 2013

Marcus wrote: >-> no message send >-> no back jump bytecode > >therefore it can not be interrupted and process switches can not happen between the statements. Ok, thatâs not too difficult. Thank you Stephan

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Re: [Pharo-users] State of Flamel?
by Stephan Eggermont Nov. 14, 2013

Nov. 14, 2013

Anyone?

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Re: [Pharo-users] PetitParser and external streams
by Sean P. DeNigris Nov. 13, 2013

Nov. 13, 2013

Federico.Balaguer wrote > Hello, > > I am developing a parser with PetitParser and one of the options I would > like to try is to get my parser to read from an external stream (file) and > produce the output to another external stream (another file) > > Is this possible? I found that Stream>>asPetitParser do this: > asPetitStream > ^ self contents asPetitStream > > Thanks! Federico ----- Cheers, Sean -- View this message in context: http://forum.world.st/PetitParser-and-external-streams-tp4721440p4721531.ht… Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

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Message naming
by Bahman Movaqar Nov. 13, 2013

Nov. 13, 2013

Let's say I have a method with signature in a language like Java as below: gregorianDayToJulianDay(year, month, day) What could be a proper naming for this method in Smalltalk? I'm a bit confused as I'm so used to the concept of methods being "verbs" which accept some arguments. I'd appreciate any help/idea. -- Bahman Movaqar (http://BahmanM.com) ERP Evaluation, Implementation & Deployment Consultant PGP Key ID: 0x6AB5BD68 (keyserver2.pgp.com)

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A question concerning fonts
by Mateusz Grotek Nov. 13, 2013

Nov. 13, 2013

Hi, Is it possible to use nonascii/nonenglish characters in a workspace and browser. I have changed the font, but I still get question marks... Pharo1.3 Latest update: #13327 Seaside 3.07 One-Click image from here: http://www.seaside.st/distributions/Seaside-3.0.7-OneClick.zip Mateusz Grotek

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CogVM arguments in Win32
by Bernat Romagosa Nov. 13, 2013

Nov. 13, 2013

Hi list! I've never used Pharo on Windows before, but we're starting to package a multi-platform app right now and I've just found out command line arguments don't work like I thought they would. I need to run the image headless, so I figured: bin-win32\Pharo -headless shared\Pharo2.0.image Would do the trick, but it's not working. Pharo /? doesn't give any hints either, and I can't seem to find the docs for the Windows VM anywhere. Does anybody know where I can find a Win32 VM reference? Thanks! -- Bernat Romagosa.

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How to change background color
by Gisela Decuzzi Nov. 13, 2013

Nov. 13, 2013

Hi, I'm getting some problems trying to change the default colors for the widgets. I need to replace the gray color for a blue (yes, quite horrible, long history). I'm using Spec and didn't find how to do this, and after trying I end up hacking in morph. Is there a way to do this? Or someone can show me a starting point?

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SmalltalkHub - Forgot password
by Bahman Movaqar Nov. 13, 2013

Nov. 13, 2013

Hi all, I forgot my SmalltalkHub password. What should I do? I don't see any "recover password" type of links or any links to the support team on the website. For the administrator(s), please reset the password for username 'bahman' :-) TIA, -- Bahman Movaqar (http://BahmanM.com) ERP Evaluation, Implementation & Deployment Consultant PGP Key ID: 0x6AB5BD68 (keyserver2.pgp.com)

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Spec - Layout behaviour when resizing
by Bahman Movaqar Nov. 13, 2013

Nov. 13, 2013

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How to add tabs in Nautilus
by kilon alios Nov. 12, 2013

Nov. 12, 2013

I see in the top right side dropdown menu that there is an option to create a window goup which basically add the current instance of Nautilus in a tab but I dont know hot to add other tabs to it. It would be cool to have multiple tabs for each class selection and not to have to open a new window for each one. So how I add other tabs ?

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