Expands the "display as a list of drives" option from This PC to work on
almost any item in the Windows 7 style. Incompatible items have a new
setting called ITEM_NODRIVES which blocks the option from appearing.
This PC still uses the original "list of drives" text, while other items
use "list of links" instead. Sorting has been updated to account for
this option by adding a property called bFolderLink which marks any
folder, even if it is not explicitly expandable.
Delete confirmation dialog may be (partially) hidden behing start menu.
As a result the dialog may be not accessible because start menu(s) are
displayed as top-most windows.
Thus when executing menu command we will make menu(s) non-topmost. So that
other windows can be drawn on top of menu(s).
Fixes#257
In several cases we don't want menu(s) to close when an action on menu was
done. For example on drag-n-drop or menu item deletion (where confirmation
dialog is shown).
In such situations `s_bPreventClosing` was set to true (and then back to
false when closing was allowed again).
Though original code honored this variable only in certain situations and
typically (at least on Win10) menus were hidden/closed despite of it.
This patch changes the behavior and menus(s) are not closed when
`s_bPreventClosing` is set to true.
Basically now menu(s) stay visible until there is an action that changes
active window.
Following functionality was also removed because it is not needed now:
* CMenuContainer::HideTemp
* COwnerWindow::OnClear
WM_CLEAR was sent to the window only by already removed `HideTemp`
