- Pharo-users - lists.pharo.org

Hello newcomers on Pharo lists...
by StÃ©phane Ducasse April 16, 2012

April 16, 2012

The pharo mailing-list is regularly attracting some newcomers and I would like to welcome them :) So welcome! We really want to improve the system so your contribution are welcomed. Now the first contribution you can do is to sign the license http://www.pharo-project.org/community/how-to-contribute http://www.pharo-project.org/license Signing the license is also important because we can show to our employer that they invest good money. Do not hesitate to let us know what you are doing and how we can improve the system and let you invent your future :) Stef and the crew here.

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GSoC news: 13 stipendiums!
by Janko MivÅ¡ek April 12, 2012

April 12, 2012

Dear Smalltalkers, Wonderful news, we got 13 "slots" from Google, that is, 13 students and their proposals will be accepted for Google and they will receive stipendiums if they will do their projects right. More exactly, part of 4500 USD immediately, part after interim evaluation and part at successful finish of their projects. We have currently 18 paired projects, that is, projects paired with one student among their many proposals. You can see that from project table, see which are currently accepted (column Acc.): http://gsoc2012.esug.org/projects?view=projectTable Now mentors need to review and score those 18 project proposals to indicate which are the best among all that nice proposals and to come with number down to 13. This will happen until next Friday 20.April, when we will finally decide, which 13 students to accept. Google will then officially confirm them in few days after. Best regards Janko & Carla -- Smalltalk GSoC Admin Team http://gsoc2012.esug.org

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logging/tallying what is getting garbage collected?
by Paul DeBruicker April 11, 2012

April 11, 2012

Is there a way to learn what is getting garbage collected in an image? In a part of an application I've written the Qwaq profiler & Pharo profiler consistently report that 2 full GC's (3% uptime) and ~400 incremental GC's (9% uptime) are run. That makes me think I'm creating and discarding a bunch of stuff and maybe I don't need to, but I also don't have a strong idea where to begin looking. Thanks Paul

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Help using Merlin
by HernÃ¡n Morales Durand April 10, 2012

April 10, 2012

Hi all, I'm using Merlin and need some help, for example in the following script I want to associate the next button with the 'Option 2' to the ListPart (in a second pane) and the next button with the 'Option 1' to the radio button pane group (options 3 and 4, in another second pane). Should I use branches? and callbacks? May anyone show an example how to do it? | wizard | wizard := WizardControl new. wizard renderer: MerlinMorphicWizardRenderer new. wizard addPane: ( WizardFirstPane new row: ( RadioButtonsPart new inGroupboxNamed: 'Choose Option A'; options: { #'Option 1'. #'Option 2' }; defaultValue: nil; yourself ) associatedTo: #optionSelected ); addPane: ( WizardMiddlePane new row: ( ListPart new initialList: { 1 . 2 . 3 . 4 }; yourself ) ); addPane: ( WizardFirstPane new row: ( RadioButtonsPart new inGroupboxNamed: 'Choose Option B'; options: { #'Option 3'. #'Option 4' }; defaultValue: nil; yourself ) associatedTo: #optionSelected ). wizard open. Cheers, HernÃ¡n

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FFI seaside3.06 Mac OSX Lion dbxtalk postgres - trouble shooting
by Cameron Sanders April 10, 2012

April 10, 2012

I am having difficulties getting set up and running with DBXTalk tools on a Mac. I hate to pester the community with some basics, but I am getting way too many hours in simply trying to connect to a Postgres DB. Any help or guidance that anyone can offer is greatly appreciated. Keep up the good work on Pharo! It is a great platform! [I have not checked in lately to see where things are with regard to us commercial operators contributing to the community, but I am overdue!] Thanks for the feedback in advance! -Cam *#1:* From http://dbxtalk.smallworks.com.ar/Download/ I see a paragraph near that top that reads: *If in the previous step you have installed OpenDBX by using its binaries (no compilation), then you must install the databse client library (C library) of your database.* By "client library", is the author referring to the libraries like libpgsqlbackend.* which is part of the opendbx binaries? Or do I need to install some posgres client from http://www.postgresql.org/? (My DB server is remote, and this computer knows nothing about it.) I built the libs locally and successfully installed them -- after finding specs that the utils cannot be compiled for Mac. Permissions for all are read & execute, except for the ".a" libs which have only read permission. *#2: does Pharo know where to look for these libraries on a mac?* Or do I need to define environmental variables to point to them? After fishing around, I read about a file called environment.plist (xml key/value), where I defined the following environmental variables based on a link from dbxtalk pages to a 2008 blog, so now my environment.plist file is stored in ~/.MacOSX and contains the following: *<plist version="1.0"> **<dict> ** <key>LD_LIBRARY_PATH</key> ** <string>/usr/local/lib:usr/lib</string>* * <key>DYLD_LIBRARY_PATH**</key> ** <string>/usr/local/lib:usr/lib</string> **</dict></plist>* *More questions:* A) do I need to include the /usr/local/lib/opendbx directory too, or do the dbx tools know to append that directory to the other path elements? and B) after logging back into my computer (actually I did a reboot -- it had been a while), I opened up a terminal, and executed printenv, but the aforementioned variables are not to be seen, is there a Mac expert in the crowd who knows why, or what the right way to do this is? *#3:* *Does anybody offer up a fairly clean image that includes the standard seaside suite, and dbxtalk tools all pre-loaded?* I am just curious for the future, as I am currently stuck at testing the OpenDBXDriver connectivity. Which implies that I have more things to install and test. *#4 -- FFI question:* In seaside in the OpenDBXDriverTests the tests all fail. (Previously I had altered DBXPostgreFacility>>createConnection to match the db login specs.) When I debug the first failed test, it says "createConnection:" failed "Error: External module not found", which is what led to question(s) #2 up above. An additional question in my mind, is when I am debugging FFI connections, how can I find exactly what library it is trying to load during the failure? And what paths it tried? In this case, looking at the following, near the top of the stack in the debugger: OpenDBXMacOSX>>apiInitialize: handle backend: backend host: host port: port "long odbx_init(odbx_t**, char*, char*, char*)" <cdecl: long 'odbx_init' (ulong* char* char* char*) module: 'opendbx'> ^self externalCallFailed I see the reference to the module 'opendbx', so I presume that is the library being sought. *So is the general solution to finding "what" is being sought, to search for the pattern 'module:'?* * * That still leaves the question of "*where*" it looked. Answers to #2 up above will likely address the rules, but the question stands: *is it possible in the debugger to see where it looked for the module? or is that simply too difficult.* Note: FFI unit tests all pass except for one using Form -- "#makeStar method not found." Cheers, Cam

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Help with the interaction with widgets or morphs like Checkboxes, and Radio buttons and Texteditor boxes
by Nelson Pingitore April 8, 2012

April 8, 2012

Hello Pharo Users. I am seeking help with the interaction with widgets or morphs like Checkboxes, and Radio buttons and Texteditor boxes, I am creating a User Settings Class to learn how to use Pharo. I copied some core widgets from the UITheme exampleBasicControls. I would like to know, starting with the code below, how to detect if the User has selected the "Ok" or "Cancel" button in the lower right of the form, and then if the user selects "Ok" how do I detect the state of the widgets (Checkboxes, Radio buttons, or Texteditor), and save those states to instance variables? |dialog builder radioModel treeModel CheckboxA| builder := UITheme exampleBuilder. dialog := (builder newPluggableDialogWindow: 'Example basic controls') useDefaultOKCancelButton. radioModel := ExampleRadioButtonModel new. treeModel := ValueHolder new contents: TextStyle actualTextStyles explorerContents. dialog contentMorph: ( ( dialog newRow: { dialog newLabelGroup: { 'Normal Label'->(dialog newLabel: 'A Label'). 'Normal Button'->(dialog newButtonFor: nil action: nil label: 'A Button' help: 'This is a button'). 'Default Button'->((dialog newButtonFor: nil action: nil label: 'Default Button' help: 'This is a default button') isDefault: true). 'Selected Button'->(dialog newButtonFor: (ValueHolder new contents: true) getState: #contents action: nil arguments: #() getEnabled: nil label: 'A Button' help: 'This is a selected button'). 'Checkbox A'->(dialog newCheckboxFor: (ValueHolder new contents: true) getSelected: #contents setSelected: #contents: label: 'A Checkbox' help: 'This is a checkbox'). 'Checkbox B'->(dialog newCheckboxFor: (ValueHolder new contents: true) getSelected: #contents setSelected: #contents: label: 'A Checkbox' help: 'This is a checkbox'). 'Checkbox C'->(dialog newCheckboxFor: (ValueHolder new contents: true) getSelected: #contents setSelected: #contents: label: 'A Checkbox' help: 'This is a checkbox'). 'Radio Buttons'-> ( ( dialog newColumn: { (dialog newRadioButtonFor: radioModel getSelected: #isLeft setSelected: #beLeft label: 'Left' help: 'This is a radio buton'). (dialog newRadioButtonFor: radioModel getSelected: #isCenter setSelected: #beCenter label: 'Center' help: 'This is a radio buton'). (dialog newRadioButtonFor: radioModel getSelected: #isRight setSelected: #beRight label: 'Right' help: 'This is a radio buton') } ) vResizing: #shrinkWrap ). 'Text Entry'->(dialog newTextEntryFor: (ValueHolder new contents: 'Hello') getText: #contents setText: #contents: help: 'This is a text entry'). 'Slider'->(dialog newSliderFor: (ValueHolder new contents: 0.5) getValue: #contents setValue: #contents: help: 'This is a slider'). 'Bump Temp'->(dialog newTextEntryFor: (ValueHolder new contents: '75') getText: #contents setText: #contents: help: 'This is the random shift'). }. dialog newVerticalSeparator. dialog newLabelGroup: { 'Drop List'->(dialog newDropListFor: (ListModel new list: #('One' 'Two' 'Three' 'Four')) list: #list getSelected: #selectionIndex setSelected: #selectionIndex: help: 'This is a drop list'). 'Normal List'-> ( ( dialog newListFor: (ListModel new list: #('One' 'Two' 'Three' 'Four'); selectionIndex: 3) list: #list selected: #selectionIndex changeSelected: #selectionIndex: help: 'This is a list' ) minWidth: 120 ). }. } ) vResizing: #spaceFill ); model: nil. builder openModal: dialog.

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Developing a Splash Screen...
by Nelson Pingitore April 8, 2012

April 8, 2012

I am attempting to add a Splash Screen to a Pharo project. I currently use the following to bring up the image: *(ImageReadWriter formFromFileNamed: 'C:\Users\npingito\Documents\Smalltalk\Splash Screen\splash.bmp') asMorph openInWorld * my question is, how can I close this image after a delay, such as after 10 seconds, and is there a better construct to use? Nelson

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GSoC news: we got 30 proposals, few stats
by Janko MivÅ¡ek April 7, 2012

April 7, 2012

Dear Smalltalkers, Yesterday passed a deadline for students to propose how will they do the projects and we received 30 proposals from 23 students, which is in my opinion quite a nice number and I'm sure we can end up with quite a number of nice projects this year. And what is even more important: new Smalltalkers in community! Next two weeks mentors will review and rank/vote for the proposals, Google will give us a number of stipendiums it will provide and in few days after Friday 20.April we will have a final list of accepted students and their projects. Few stats (numbers of all participating): 32 projects 34 mentors 32 students 30 proposals 23 students wrote proposal Students by Smalltalk skill: 11 None 9 Low 5 Medium 7 High Students from countries: 5 Argentina 5 India 4 Russia 3 USA 2 Chile 2 Czech Republic 2 Malaysia 1 China 1 Croatia 1 Ecuador 1 Egypt 1 France 1 Germany 1 Sweden 1 Ukraine 1 Slovenia Stay tuned! Janko @ Carla -- Smalltalk GSoC Admin Team http://gsoc2012.esug.org

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April 7, 2012

Begin forwarded message: > From: Igor Stasenko <siguctua(a)gmail.com> > Subject: [Pharo-project] [ANN] NBOpenGL update > Date: April 6, 2012 3:31:54 PM GMT+02:00 > To: Pharo Development <Pharo-project(a)lists.gforge.inria.fr> > Reply-To: Pharo-project(a)lists.gforge.inria.fr > > Hi there, > > for those, who interested, i updated a NBOpenGL configuration. > > Changes are: > > - updated GL API to most recent available (taken directly from opengl > specs). Now there is about 300 more methods to explore :) > - finally dealt with win32 support code and made it working again > - fixed the GLX function prefix , which should be 'glX' not 'glx' > > To load it in 1.4 use: > > Gofer new > squeaksource: 'NBOpenGL'; > package: 'ConfigurationOfNBOpenGL'; > load. > > > and then > > (ConfigurationOfNBOpenGL project version: '1.0.2') load > > I did not tested the update thoroughly.. so i would appreciate if > people will try it out and tell how it goes. > > > -- > Best regards, > Igor Stasenko. >

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Pharo OneClick and Ubuntu 12.04 beta 2 64 bit
by drush66 April 5, 2012

April 5, 2012

Ok, I guess I am doing something completely stupid or Pharo 1.3 and 1.4 OneClick do not work on Ubuntu 12.04 beta 2 (64bit)? I get the error: ./pharo.sh: 8: exec: ./Contents/Linux/pharo: not found I guess it has something to do with 32/64 bit libraries that one click tries to use. Since 64bit will be default from 12.04 for Ubuntu, this kind of makes it important. Davorin Rusevljan http://www.cloud208.com/ ----- http://www.cloud208.com/ -- View this message in context: http://forum.world.st/Pharo-OneClick-and-Ubuntu-12-04-beta-2-64-bit-tp45355… Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

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