Shell_TrayWnd: unusual WM_COPYDATA messages

Hey all,

I've noticed something odd (seemed odd to me at least) when debugging 
LiteStep's TrayService:
As you know WM_COPYDATA is sent to the "tray" window on several 
occasions. The "dwData" member of the COPYDATASTRUCT tells us what kind 
of message we just received. If it equals 1 it's a tray message from 
Shell_NotifyIcon, if it equals 0 it's an appbar message from 
SHAppBarMessage. So I'm stating the obvious here. But today I saw 
messages with dwData set to 2. cbData was 20 in those cases. Those are 
new to me. The messages occured when launching iexplore.exe (each and 
every time). Can anyone confirm this? Does anyone have any idea what 
kind of messages they are?

Simon



__________________________________________________
Subscription options and archive:
http://www.freelists.org/list/shell-coding