Les,

Which VM are you using?  I am using Squeak-D3D.exe from May.

Actually, you've reminding me that I made a change in the PocketPC code that
may not have been carried over into Andreas' code base yet.  Take at look at
sqWin32Window.c (Win32) and sqWin32Window.cpp (WinCE).  As I recall, the
code for WM_PAINT handling in sqWin32Windows.c is/was wrong.  It read:

  case WM_PAINT:
    /* retrieve update region _before_ calling BeginPaint() !!! */
    GetUpdateRgn(hwnd,updateRgn,FALSE);
    BeginPaint(hwnd,&ps);
    /* store the rectangle required for image bit reversal */
    updateRect = ps.rcPaint;
    EndPaint(hwnd,&ps);
    /* Avoid repaint unless absolutely necessary (null update rects are
quite common) */
    if (!IsRectEmpty(&updateRect)) {
      /* force redraw the next time ioShowDisplay() is called */
      updateRightNow = TRUE;
      fullDisplayUpdate();  /* this makes VM call ioShowDisplay */
    }

That is also what used to be in the PocketPC version of the file, too, until
I fixed it:

  case WM_PAINT:
    /* retrieve update region _before_ calling BeginPaint() !!! */
#ifdef USE_GAPI
    if (GetForegroundWindow() == hwnd) {
       // should probably be in ioShowDisplay()
#endif
      if (GetUpdateRect(hwnd, NULL, FALSE)) {
        /* An application should call the GetUpdateRect function to
determine
         * whether the window has an update region. If GetUpdateRect returns
         * zero, the application should not call the BeginPaint and EndPaint
functions. */

        GetUpdateRgn(hwnd,updateRgn,FALSE);
        BeginPaint(hwnd,&ps);
        /* store the rectangle required for image bit reversal */
        updateRect = ps.rcPaint;
        EndPaint(hwnd,&ps);
        /* Avoid repaint unless absolutely necessary (null update rects are
quite common) */
        // if (!IsRectEmpty(&updateRect)) {
           /* force redraw the next time ioShowDisplay() is called */
           updateRightNow = TRUE;
           fullDisplayUpdate();  /* this makes VM call ioShowDisplay */
        // }
      }
#ifdef USE_GAPI
    }
#endif
    break;

Since USE_GAPI won't be defined on Win32, you should be able to replace the
entire code segment.  Hopefully, if/when someone gets around to fully
merging Ohshima-san's PocketPC files with Andreas' Windows code, these fixes
will be preserved into the common code.  As I recall, that change fixed a
flicker problem I'd seen with the PocketPC.

Let me know if that change helps.

	--- Noel