- fix encoding of integer value 0
- more tests

"errno" is not a good choice for a parameter name.

longer used by default on other platforms anyway.

  new margins.
- Adjust the format rectangle and repaint the control after the
  margins have been set.
- New tests.

- add RTL_ to one more CRITICAL_SECTION_DEBUG

- Use STATUS_WAIT_0 not WAIT_OBJECT_0.

Removed keys that are registered by mshtml.dll.

root folder's SFGAO_FILESYSTEM flag to the registry.

  buttons.
- Fix control to follow these rules.
- Don't redraw disabled buttons.
- Padding is never less that GetSystemMetrics(SM_{CX,CY}EDGE).
- Change default iListGap value to 4 to match native.

correctly because the height and width were swapped in the pager
control.

improve performance, especially if picking and choosing files out of
the cabinet.