tree 4fa3043241546923541e282c2d64a0438c622f6c
parent 26e6a88d6b17f2ea527ac9fd193f3a0cc9b98531
author Alexandr Miloslavskiy <alexandr.miloslavskiy@syntevo.com> 1597268806 +0200
committer Alexandr Miloslavskiy <alexandr.miloslavskiy@syntevo.com> 1597345929 +0200

Bug 565679 - [Win32] SWT requests WS_EX_CLIENTEDGE and then tries to make it look like WS_BORDER

This patch addresses problems in Tree:

* Border type is now `WS_BORDER` instead if incorrect `WS_EX_CLIENTEDGE`
  `WS_BORDER` is a flat 1px border.
  `WS_EX_CLIENTEDGE` is a 3D 2px border.
  Workarounds forced Tree to appear as if it had `WS_BORDER`.

* When `hwndParent` is created, border is removed on Tree and added to
  `hwndParent` instead. This is more reasonable and allows to remove
  workaround in `Tree.setScrollWidth()` which moved unwanted borders
  outside the visible area.

Side effects:

* Tree contents moved one pixel left/up, because border is now 1px
  thinner. I think that this is fine.

* Border is now darker, matching original Windows appearance for
  borders. I consider this to be a good change, because it brings SWT
  in line with native applications.

Change-Id: I551cd86d746392b625dfd5cc70130fb89b1d0ca5
Signed-off-by: Alexandr Miloslavskiy <alexandr.miloslavskiy@syntevo.com>