[M3devel] windows move/scroller

[Olaf Wagner]

Quoting Jay <jay.krell at cornell.edu>:

>
> Randy, your scrollervbclass.m3 looks ok or better.
>
> I went to try other gui apps, see if I could see the failure-to-move bug.
> It seems that most gui apps now crash.
> formsvbtedit is ok.
>
>
> ***
> *** runtime error:
> ***     failed.
> ***    file "..\src\winvbt\WinContext.m3", line 171
> ***
>
> Stack trace:
>    FP         PC      Procedure
> ---------  ---------  -------------------------------
> 0x6e1f80c  0x1011cf9  PushPixmap + 0x49b in ..\src\winvbt\WinContext.m3
> 0x6e1f8d4  0x101fd0c  PixmapCom + 0x932 in ..\src\winvbt\WinPaint.m3
> 0x6e1fd30  0x101dc35  PaintBatch + 0x225 in ..\src\winvbt\WinPaint.m3
> 0x6e1fd98  0x10184ee  PaintBatchVBT + 0x12d in ..\src\winvbt\WinTrestle.m3
> 0x6e1fde0  0x1016ded  WindowProc + 0x699 in ..\src\winvbt\WinTrestle.m3
> 0x6e1fe0c  0x7d9472d8
> 0x6e1fe84  0x7d947568
> 0x6e1fefc  0x7d94778d
> 0x6e1ff0c  0x7d94ab86
> 0x6e1ff54  0x101bbc9  MessengerApply + 0x21f in ..\src\winvbt\WinTrestle.m3
> .........  .........  ... more frames ...
> (a3c.aec): Break instruction exception - code 80000003 (first chance)
> eax=00000001 ebx=000000ab ecx=0000ff27 edx=0000001c esi=06e1f5b0 edi=006358eb
> eip=7d61002d esp=06e1f598 ebp=06e1f5b0 iopl=0         nv up ei pl nz na po nc
> cs=0023  ss=002b  ds=002b  es=002b  fs=0053  gs=002b             efl=00000202
> ntdll32!DbgBreakPoint:
> 7d61002d cc              int     3
>
>
> The "funny" thing is that when this occurs, lots of scrollbar arrows  
>  have been drawn
> at the wrong place -- filling up Juno's canvas.

Did Juno ever work on Windows' Trestle? I seem to remember that
the Windows implementation was not sufficient for this rather
sophisticated application, too many things were missing.

Olaf

>
> This happens with current ScrollerVBClass.m3, or copying the Posix   
> one over Win32,
> or your current one.
>
> I changed PushPixMap to print GetLastError, but it is 0. :(
>
> I'll dig a bit.
>
> Not great.
>  - Jay
>



-- 
Olaf Wagner -- elego Software Solutions GmbH
                Gustav-Meyer-Allee 25 / Gebäude 12, 13355 Berlin, Germany
phone: +49 30 23 45 86 96  mobile: +49 177 2345 869  fax: +49 30 23 45 86 95
    http://www.elegosoft.com | Geschäftsführer: Olaf Wagner | Sitz: Berlin
Handelregister: Amtsgericht Charlottenburg HRB 77719 | USt-IdNr: DE163214194