- Perform an immediate system shutdown if the timeout is zero, otherwise
display the countdown shutdown dialog.
- Cleanup pShutdownParams->pszMessage as soon as the dialog goes away.
- It actually appears (tested on Windows 2000 and 2003) that sending
WM_CLOSE messages from a user-mode app to the shutdown dialog really
do nothing (and in particular does not cancel the shutdown!), so modify
the code to take this fact into account.
- Use the "%d days" format for timeouts longer than a day.
- Fail if timeout is 10 years or longer.
- TODO: Replace format strings by resources. German WinXP uses "%d days" instead of "%d Tage". We can do better! ;-)
- Replace the winlogon icon by the warning icon.
- Add more space for the main text.
- Move the shutdown time into a separate line to ensure it is always fully visible.
- Add more space for the shutdown message and keep the message empty by default.
- Clean up the resource IDs.
- Replace the UNICODE_STRING usMessage by a PWSTR pszMessage.
- Use the "%02d:%02d:%02d" time format and get rid of the safe string printf because the string will NEVER be longer than 8 characters.
- Rename the timer id constant because it is NOT a resource id.
- Rename variables according to the coding style.
- Add empty lines to separate logical blocks of code.
- Add spaces according to our coding style.
- Move g_hShutdownDialog and g_bShuttingDown into the shutdown parameters struct.
- Pass a pointer to the shutdown parameters to the shutdown thread and the shutdown dialog and use the pointer instead of the global variables.
- Move the timer code into a separate function because it requires local variables.
