- Introduce the TRAYNOTIFYDATAW structure, as documented by Geoff
Chappell in "WM_COPYDATA for Taskbar Interface", at
http://www.geoffchappell.com/studies/windows/shell/shell32/api/shlnot/copydata.htm
that is the data structure passed between shell32 and explorer for
communicating shell notify icon information.
- In Shell_NotifyIcon(), correctly capture the (ANSI and) UNICODE
structures provided by the caller, properly taking into account for
the different NOTIFYICONDATA structure sizes existing out there.
The different strings are now properly null-terminated (especially
szTip if it needs to be truncated out), and the flags validated.
- Remove the now unneeded "SHELL_NotifyIcon()" helper function.
[EXPLORER] Use TRAYNOTIFYDATAW and adjust the callers.
MSDN says that these values are not used but apparently they are used as a padding around the buttons.
This helps to center the buttons in the notification area.
