Squeak-dev July 2000

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566 discussions

Re: Ship it with Squeak
by Bijan Parsia 01 Jul '00

01 Jul '00

On Sat, 1 Jul 2000, Stefan Matthias Aust wrote: > At 18:50 28.06.00 -0400, Bijan Parsia wrote: > > > > Hmm. This isn't quite true either. Can you really show multiple fonts in > > > multiple sizes in one workspace? > > > >Yes. Try "set font" in the "more..." yellow menu of a workspace. I just > >did NewYork14. I have pasted in other fonted text.. > > Please let us define "different font" first. Well, ok, so long as we do it correct. > For me, NewYork12 and > NewYork24 aren't different fonts but just the same font in different > sizes. Well, for Squeak---and the typesetting world---they're different fonts. NewYork12 and NewYork24 can have completely different glyph sets. Er...they *do* have completely different glyph sets. > And changing the font size is all you can do with the "set > font..." menu option. Well, you didn't *say* through the "set font..." menu option...though it turns out with *minimal* tweaking, you can make that work too. > So please let me repeat my question: Can you show one word written in font > Comic12 and another word in font NewYork12 in the same workspace in the > same size? Looking at the "Welcome to..." window, there should be a way, > but AFAIK, you can't. Well, at this point, I'm no longer *confident* that I can satisfy your concerns with more words that may not answer to your understanding. But perhaps a picture will do the job: http://www.unc.edu/~bparsia/squeak/MultiFontWorkspace.gif I would show the menu which now has Ypatia14 as a font option...but I can't remember where I put the delay code for the screenshot that Bob did up for me, and don't feel like it :) The simplest way to add *more* fonts (not that there's just one at the moment) to the set font...menu is to inpsect DefaultTextStyle, and evaluate (something like): self fontAt: 5 put: (ComicBold fontAt: 3) Then open a new workspace. The UI studly with time on their hands can work up a new font menu that collects various vaguely related "fonts" into "families" under a heading in the menu with submenus for the "font sizes". So, I *believe*, I sincerely *hope*, that it is now established that there *is* a sufficently *rich* Rich Text Widget for, at least, *some* purposes. I cannot say that it answers to *all* purposes, but it's also pretty clear that *building* ones, using a variety of techniques, is non-burdensome to various degreeds. Cheers, Bijan Parsia. P.S. Well, *yes*, I'm feeling a touch snippy...what's it to you? ;) P.P.S. To be fair, I think mine is a *reactive* snippiness. I do tend to get snippy when the number of "this what squeak needs before I'll deign to use it" posts outweigh the "here's something cool to play with", espeically when the former start talking about "most" or "many" people, etc. etc. P.P.P.S. Not that your concerns aren't valid, well-phrased, interesting yadda yadda yadda. But I'd like to see a few more, "Well, here's one way I can use squeak as is." type posts. Or "here's a small thing that would help me, anyone up for it?" P.P.P.P.S. But since we feature-whining...what I'm *dying* for is a Squeak port of Lucene (a java VTwin full text search clone): http://lucene.sourceforge.net/ Any java literate folks up to taking it on? For *meeeeeeeeeeeeeeeeeeeee*? <blink/> <flutter/> <blink/> P.P.P.P.P.S. (Different "blink" tag...don't be fooled.)

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[ENH] String splitting
by FWr＠phaidros.com 01 Jul '00

01 Jul '00

Hi folks, I just looked for a method to split a string at all occurences of a given character. Unfortunately I couldn't find a method for this problem. So I wrote one myself. Maybe it will be of interest for others. Frank Frank Winkler Phaidros Software AG 03677 677 9286 privat Tel. 03677 206615, 0170 821 7624 Java, the best argument for Smalltalk since C++.

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RE: [Q] Using FFI to call standard Windows dialogs
by Torsten.Bergmann＠phaidros.com 01 Jul '00

01 Jul '00

Ohhh no - you try to call the API with a window handle as a parameter, but the the API is defined like the following: BOOL PrintDlg( LPPRINTDLG lppd // initialization data ); So you have to call it with the address of a PRINTDLG structure. This structure contains informations used to initialize the dialog box (including the handle to the owner window). See http://www.msdn.microsoft.com/library/default.asp?URL=/library/psdk/winui/co mmdlg3_7xwy.htm How to do it in Squeak: - create a new subclass Win32PRINTDLG of ExternalStructure - implement the class method #fields to define the fields of the struct like: Win32PRINTDLG(class)>>fields "Win32PRINTDLG defineFields" ^#( #(#lStructSize 'long') #(#hwndOwner 'long') ... ) see http://www.msdn.microsoft.com/library/default.asp?URL=/library/psdk/winui/co mmdlg3_7xwy.htm for the structure definition (note that any structure member is a long (4 bytes), except nFromPage, nToPage, nMinPage, nMaxPage, nCopies (only two bytes) - evaluate "Win32PRINTDLG defineFields" to create accessor methods on the instance side - create an API call method shellPrintDialog: aWin32PRINTDLG "Displays a print dialog box" <apicall: bool 'PrintDlgA' (Win32PRINTDLG*) module: 'comdlg32.dll'> ^self externalCallFailed This should work. If the API call goes wrong it returns FALSE (= 0). I personally dont like the way Squeak calls API functions. In Smalltalk MT you only write: WINAPI PrintDlg: PRINTDLG new That's a little bit easier ;) Hope this helps Torsten BTW: It's interesting that you mail address is Kronos.com - my nickname is Cronos -----Original Message----- From: Norton, Chris [mailto:chrisn@Kronos.com] Sent: Freitag, 30. Juni 2000 04:26 To: Squeak (E-mail) Subject: [Q] Using FFI to call standard Windows dialogs Hi Folks. I was experimenting with FFI on my Windows NT box and I kept crashing my image (virtual memory dumps). Can anybody help me with this call? ~~~~~~~~~~~~~~~~~~~~~~~~~~ Win32Shell>> shellPrintDialog: aHWND "Win32Shell new shellPrintDialog: Win32Window getFocus" <apicall: bool 'PrintDlgA' (Win32Window) module: 'comdlg32.dll'> ^self externalCallFailed ~~~~~~~~~~~~~~~~~~~~~~~~~~ I'm trying to launch the print dialog. Thanks for your thoughts! ---==> Chris PS> And my next question is, of course, how do I get a document to print once I've got the dialog launching from Squeak (e.g. how do I provide the dialog with a document to print?)...

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RE: [Q] Using FFI to call standard Windows dialogs
by Stefan Matthias Aust 01 Jul '00

01 Jul '00

At 08:29 30.06.00 -0400, Jarvis, Robert P. \(Contingent\) wrote: > typedef struct tagPD { > ... > HWND hwndOwner; > HINSTANCE hInstance; I think, it's tricky to fill in the above values. While you probably can get the HWND of Squeak's windows by searching that window by its class I see no easy way to get the hInstance. This value is passed to the Windows VM during startup via the WinMain() function call. The VM stores the value but there's no way to access it. As Squeak even support strange platform dependent information like the itsy battery power, I'd like to see a way to get the hInstance and hWnd values of the Squeak VM which are required for a lot of API calls. I'm currently using this code HWND hWnd = FindWindow("SqueakWindowClass", NULL); if (hWnd == NULL) return 0; return (HINSTANCE)GetWindowLong(hWnd, GWL_HINSTANCE); which answers the hInstance or 0 if it cannot be retrieved (should never happen with VM 2.8 or 2.9). >Personally, I think printing is one of the most God-awful things an >application ever has to do. Actually, it's not that bad. Window's GDI provides some abstraction here and drawing on a printer HDC is nearly the same than drawing on the screen HDC. bye -- Stefan Matthias Aust // Bevor wir fallen, fallen wir lieber auf

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Breaking from a do-loop???
by jchludzinski＠worldkey.net 01 Jul '00

01 Jul '00

I'm writing some numerical code and need to know: How would I accomplish a "break" (a la 'C') from a ST do-loop? Use an exception? ---John

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[BUG][FIX] File out empty change set results in a dangling file h andle
by Norton, Chris 01 Jul '00

01 Jul '00

Steps to reproduce: 1. From the "changes..." menu, choose "create new change set..." 2. Name the set and Accept it. 3. From the "changes..." menu, choose "file out current change set" Result: Notifier "Warning: no changes to file out" Tracing the code led me to ChangeSet.fileOut. This method, as you might expect, files out your active changeset. Unfortunately, if an error occurs during the filing out of the code, you end up with an open file that doesn't get closed. I've fixed this problem by wrapping the file handling code in an ensure: block. Now that we have Exception Handling, I think that we should probably start bullet-proofing Squeak's file handling code (I believe that this is the 3rd one I've cleaned up since the TFEI Exception Handler stuff was added). Cheers, ---==> Chris PS> On a related note, does anyone have a utility that closes dangling file handles (like VSE's FileHandle.closeHandles)? Thanks! <<ChangeSet-fileOut.1.cs.gz>>

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