[M3devel] windows move/scroller

[Jay]

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.

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