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From: Ilya Konstantinov on 14 Sep 2009 14:34
How does Windows know when to display the "Your new hardware is
installed and ready to use" popup balloon? For example, imagine a
heavy composite USB device with many function drivers, the PnP system
never knowing whether those function drivers would be the parent to
even more function drivers...

Is there simply a timeout (like, after the last DBT_DEVICEARRIVAL
fires and no more DBT_DEVNODES_CHANGED are fired), after which Windows
assumes everything is settled and its safe to display this popup
message?
From: Maxim S. Shatskih on 15 Sep 2009 06:34
> How does Windows know when to display the "Your new hardware is
> installed and ready to use" popup balloon? For example, imagine a
> heavy composite USB device with many function drivers

Probably when there is no uninstalled devnodes left in the tree?

--
Maxim S. Shatskih
Windows DDK MVP
maxim(a)storagecraft.com
http://www.storagecraft.com

From: Ilya on 15 Sep 2009 08:05
On Sep 15, 1:34 pm, "Maxim S. Shatskih"
<ma...(a)storagecraft.com.no.spam> wrote:
> > How does Windows know when to display the "Your new hardware is
> > installed and ready to use" popup balloon? For example, imagine a
> > heavy composite USB device with many function drivers
>
> Probably when there is no uninstalled devnodes left in the tree?

The usermode PnP notification facilities (WM_DEVICECHANGE,
RegisterDeviceNotification) don't have any such event.
(Of course, one may poll for this by enumerating the CM tree after
each DBT_DEVNODES_CHANGED.)

And anyway, for USB mass storage devices, you'd be left with no
uninstalled devnodes as soon as the USBSTOR driver loads. Then, the
FDO will get IRP_MN_QUERY_DEVICE_RELATIONS and this will result in
more uninstalled devnodes (the disks -> the volumes).

So how will Windows know when no uninstalled devnodes will be created?
-- when eventually all query-relations return zero new child devices?
And more importantly, how do I know this from a usermode program? :)
From: Mike [MSFT] on 15 Sep 2009 16:10
When the balloon is displayed is slightly different for different versions
of Windows. But primarily if you want to know when installation is done you
can call CMP_WaitNoPendingInstallEvents
(http://msdn.microsoft.com/en-us/library/ms789525.aspx). That is a good
approximation for when the finish balloon is displayed.

-Mike

"Ilya" <ilya.konstantinov(a)gmail.com> wrote in message
news:dc582d9c-0daa-4e74-a7bd-cba2c8283a87(a)h30g2000vbr.googlegroups.com...
> On Sep 15, 1:34 pm, "Maxim S. Shatskih"
> <ma...(a)storagecraft.com.no.spam> wrote:
>> > How does Windows know when to display the "Your new hardware is
>> > installed and ready to use" popup balloon? For example, imagine a
>> > heavy composite USB device with many function drivers
>>
>> Probably when there is no uninstalled devnodes left in the tree?
>
> The usermode PnP notification facilities (WM_DEVICECHANGE,
> RegisterDeviceNotification) don't have any such event.
> (Of course, one may poll for this by enumerating the CM tree after
> each DBT_DEVNODES_CHANGED.)
>
> And anyway, for USB mass storage devices, you'd be left with no
> uninstalled devnodes as soon as the USBSTOR driver loads. Then, the
> FDO will get IRP_MN_QUERY_DEVICE_RELATIONS and this will result in
> more uninstalled devnodes (the disks -> the volumes).
>
> So how will Windows know when no uninstalled devnodes will be created?
> -- when eventually all query-relations return zero new child devices?
> And more importantly, how do I know this from a usermode program? :)

From: Ilya on 16 Sep 2009 08:11
On Sep 15, 11:10 pm, "Mike [MSFT]" <jlongh...(a)hotmail.com> wrote:
> When the balloon is displayed is slightly different for different versions
> of Windows.  But primarily if you want to know when installation is done you
> can call CMP_WaitNoPendingInstallEvents
> (http://msdn.microsoft.com/en-us/library/ms789525.aspx).  That is a good
> approximation for when the finish balloon is displayed.

Mike (and Maxim, as always :), thanks a lot!
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