Re: Shell_TrayWnd: unusual WM_COPYDATA messages

> 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?



I think a WM_COPYDATA message is also sent to Shell_TrayWnd when
someone calls SHLoadInProc. I saw some code once that handled it, but
I cannot find a reference to it anywhere now.  That might be what you're
seeing.

--
Maduin



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