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Re: Sending WinSqueak Code: Dumb but Critical Question
by Ian Piumarta 20 Jan '98

20 Jan '98

Mark, > (1) When students fileOut their code, FTP it to their UNIX accounts, and > mail it to us, all the line endings are gone and we can't fileIn the > result. FTPing in ASCII mode should convert the line endings automatically. FTPing in BINARY mode will not. In the "util" directory of the Unix release are a couple of trivial scripts that use 'tr' to convert line endings: sqcat converts MacOS -> Unix qscat converts Unix -> MacOS these might be usable and/or adaptable for converting line endings between Unix and NT. Ian

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Re: Smalltalk book for beginners?
by Serg Koren 20 Jan '98

20 Jan '98

----- Christopher Oliver said: >> "A Taste of Smalltalk" > > I borrowed and enjoyed this from a friend when I got my first copy > of Squeak. I think it may be more than a little hard to get. I did > a quick check, and Powell's doesn't seem to have one at the moment. > I don't know haw fast an out-of-print book search will turn this up. > >"On To Smalltalk" are excellent for beginners. > > Will this work for Squeakers? Isn't it SE-centric? > >-- Apart from some of the GUI-specific builder things, it works fine. Even the GUI-builder portions are useful to know although not directly usable on Squeak...not everyone uses Squeak unfortunately ;-) S ------------------------------------------------- VisualNewt Software: http://www.VisualNewt.com/ Maker of Newt'sPaper(tm) the Premier Newton(R) MessagePad(tm) News Reader. -------------------------------------------------

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Re: Smalltalk book for beginners?
by chrisg＠AppliedReasoning.com 20 Jan '98

20 Jan '98

Smalltalk, Objects, and Design by Chamond Liu. Even though it is VA specific it contains some very good sections on the basic tenants of object oriented programming with Smalltalk. An excellent book. -chris Chris Reuter wrote: > > A friend of mine wants to learn to program. I immediately suggested > Squeak as something to start with, but I don't know of any "Learn to > Program Using Smalltalk" sorts of books out there, and given his level > of computer knowledge, I doubt he'd be able to learn from just the > source code. > > Can somebody point me to a book, online tutorial, video series, > etc. on programming in Smalltalk for non-programmers? Is there such a > thing? I'd hate to let another human mind become polluted with Visual > Basic. > > --Chris -- ------------------------------------------------------------ Chris Grindstaff | Applied Reasoning mailto:chrisg@appliedreasoning.com | 111 Corning Rd., Suite 220 919-851-7677 | Cary, NC 27511 http://www.appliedreasoning.com | ------------------------------------------------------------

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RE: API Calls for Squeak 1.3
by Alejandro F. Reimondo 20 Jan '98

20 Jan '98

>Why not change the code to: >KernelDLL class methodsFor: 'opening' stamp: 'afr 1/14/98 21:52'! >getCurrent > "Private - get (open) an instance of the receiver." > > ^self fromInteger: self new getHandle. >Remember, getCurrent should answer something which becomes current. >The setting of current is handled up in the hierarchy. Now, getCurrent also > sets the current. Yes!, ok you are right; thanks. >We've got things compiled and running. When evaluating the getVersion >example it prints 16r4 (good!) but when I evaluate the WinExec 'calc.exe' >the Windows Calculator comes up and then Squeak crashes in Win32Alloc >(vMemIsReservedPage...Query) etc. After testing 3 or more examples leading >to the same result we stopped. I've noticed some problems: 1.- Structures MUST be defined in external (fixed) memory :-( 2.- API must be changed to acept them. 3.- SeldDefinedStructure for StartUpInfo was wrong. The right code for API call is: ---Cut here-------------------------------------- !KernelDLL methodsFor: 'api calls'! createProcess: imageName commandLine: commandLine processSecurity: processSecurity threadSecurity: threadSecurity inheritHandles: aBoolean createFlags: createFlags environment: environmentString currentDir: directoryString startInfo: startupInfo processInfo: processInfo <api: CreateProcessA struct struct struct struct boolean ulong struct struct ulong ulong boolean > ^self invalidArgument! ---Cut here and fileItIn----------------------- The right code for the DoIt chunk is..... ---Cut here-------------------------------------- | startupInfo processInfo aPathName | ExternalHandle startUp. "Here we define needed structures..." Dynalink32 registerType: 'STARTUPINFO' as: #( (cb ulong) (reserved ulong) (desktop ulong) (title ulong) (x ulong) (y ulong) (xSize ulong) (ySize ulong) (xCountChars ulong) (yCountChars ulong) (fillAttribute ulong) (flags ulong) (showWindow ushort) (cbReserved2 ushort) (lpReserved2 ulong) (hStdInput ulong) (hStdOutput ulong) (hStdError ulong) ); registerType: 'PROCESSINFORMATION' as: #( (hProcess ulong) (hThread ulong) (dwProcessId dword) (dwThreadId dword) ); yourself. "Now, we can fill the structures and call the API" aPathName := 'calc.exe'. startupInfo := Dynalink32 externalStructureNamed: 'STARTUPINFO'. startupInfo cb: startupInfo sizeInBytes; showWindow: 1. processInfo := Dynalink32 externalStructureNamed: 'PROCESSINFORMATION'. ( KernelDLL current createProcess: nil commandLine: aPathName asParameter processSecurity: nil threadSecurity: nil inheritHandles: false createFlags: 0 environment: nil currentDir: nil startInfo: startupInfo asParameter processInfo: processInfo asParameter ) ifFalse: [ ^self osError ]. startupInfo release. processInfo release. ---Cut here and DoIt------------------------------- Bye. Ale.

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win32: "save as..." writes to the desktop
by Craig Latta 20 Jan '98

20 Jan '98

Hi-- This has probably been reported before... When I snapshot using "save as..." on win32, the system writes the image to the desktop, copies the changes document to the folder in which the virtual machine is located, and complains twice that it can't find the new changes document. If I then quit, move the new image to the aforementioned folder, and start that image, everything seems to be fine. It's a minor annoyance; I could imagine someone not noticing that the image was written to the desktop (e.g., they have a very cluttered desktop). -C -- Craig Latta composer and computer scientist craig.latta(a)netjam.org www.netjam.org latta(a)interval.com Smalltalkers do: [:it | All with: Class, (And love: it)]

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ideas for Squeak projects
by Richard Smol 20 Jan '98

20 Jan '98

Hello there, I don't claim to be a Smalltalk-crack, but after fiddling around with Squeak I got ideas for various projects. I don't know if anyone else has had similar ideas or even has started something, but I would gladly like to know :) Here are my ideas listed by outrageousness: - Squeak Music Well, since the Smallmusic project more or less faded away, why not try to pick it up in Squeak? The start is there: the limited, but already usable sound classes in Squeak. Why not try to make a full-featured sequencer and synthesizer? That sould be a lot of fun (especially for me since I am a part-time musician ;) ) - Native windowing support Although the Squeak windowing system is cool in itself and very adequate for most displaying needs, it would be fun if one could use it to write programs with a native look and feel. Is anyone up to the challenge? >:) - Squeak OS This is actually the opposite of the previous idea: free Squeak from the burden of it's underlying OS and give it a room for itself. As I see it, Squeak actually already is it's own little OS, with all the windows 'n stuff ;) Why not enhance it further? I guess we should start with giving it its own bootstrapping capabilties. I got the idea after trying DOS-Squeak. It more or less made it all feel like I was running Windows on DOS, but better, of course ;) Well, tell me what you think. Greetz, RS

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Re: Smalltalk book for beginners?
by Christopher Oliver 20 Jan '98

20 Jan '98

> "A Taste of Smalltalk" I borrowed and enjoyed this from a friend when I got my first copy of Squeak. I think it may be more than a little hard to get. I did a quick check, and Powell's doesn't seem to have one at the moment. I don't know haw fast an out-of-print book search will turn this up. "On To Smalltalk" are excellent for beginners. Will this work for Squeakers? Isn't it SE-centric? -- Christopher Oliver Traverse Communications Systems Coordinator 223 Grandview Pkwy, Suite 108 oliver(a)traverse.com Traverse City, Michigan, 49684 (define magic (lambda (f) (lambda (x) x))) (define (more-magic n) (lambda (f) (lambda (x) (f ((n f) x)))))

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Re: Q: Big/little endian and readBits@GIFReadWriter?
by gr＠fuzzy.uba.ar 20 Jan '98

20 Jan '98

R.L.J.M.W. van Loon wrote: > > Hi there, > > I had to fix my GIFReadWriter class. I had to swap the bytes just before > they were turned into a Form (see readBits@GIFReadWriter). I had the same > problem with the PCXReadWriter. This has probably to do with my VM being > little endian. I don't like this. Any solutions to circumvent this kind of > problems? You can remap the color pallete instead of swapping bytes, but I'm not sure if this can be done easly with Squeak (it should be easy), and I don't know what will happen to Squeak's window's colors. [Ups! Does Squeak's VM's endian's size (big or small :) change from one machine to another?] LoEndian eyB! Richie++

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TextConstants & 1.3
by Georg Gollmann 20 Jan '98

20 Jan '98

One for the Squeak team when it is back in the office: The pool dictionary TextConstants has lost most of its contents in version 1.3. Has this been done on purpose, or what is the "official" content that client classes can rely on being there ? Georg ---- Dipl.Ing. Georg Gollmann TU-Wien, EDV-Zentrum phon:(+43-1) 58801 - 5848 fax: (+43-1) 587 42 11 mail:gollmann@edvz.tuwien.ac.at http://ftp.tuwien.ac.at/~go/Gollmann.html

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RE: Smalltalk book for beginners?
by Serg Koren 20 Jan '98

20 Jan '98

"A Taste of Smalltalk" and "On To Smalltalk" are excellent for beginners. -----Original Message----- From: Chris Reuter [SMTP:cgreuter@calum.csclub.uwaterloo.ca] Sent: Monday, January 19, 1998 7:29 PM To: squeak(a)cs.uiuc.edu Subject: Smalltalk book for beginners? A friend of mine wants to learn to program. I immediately suggested Squeak as something to start with, but I don't know of any "Learn to Program Using Smalltalk" sorts of books out there, and given his level of computer knowledge, I doubt he'd be able to learn from just the source code. Can somebody point me to a book, online tutorial, video series, etc. on programming in Smalltalk for non-programmers? Is there such a thing? I'd hate to let another human mind become polluted with Visual Basic. --Chris

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