Michael, have you tried using the Devcon update command, instead of Devcon
install? Devcon install actually creates a new devnode for legacy drivers
before calls UpdateDriverForPlugAndPlayDevices, even though you don’t need a
new devnode. Sorry if the term “install” is misleading.
June Blender
DDK Tools
xxxxx@microsoft.com
“Michael Jones” wrote in message
news:xxxxx@ntdev…
>I am using the devcon sample to manual install a non plug-n-plug bus driver
> we have. Now I get the following different behaviors in 2k, 2k3, xp and
> now
> xp embedded. I can make all to work consistently except for xp embedded.
> Let me describe the 2k, 2k3 and xp behavior.
>
> Question is really number 4 below as that is the environment I need for
> this
> to work.
>
> (1) 2k works ok and i can install multiple times ok with devcon.exe. The
> reason is that 2k was not removing all our device objects correctly and
> hence I can use devcon.exe multiple times to install multiple devices.
> (2) 2k3 still had the 2k behaviour.
> (3) Now xp would indeed unload our driver and sense our coinstaller is not
> handling update driver we would unload and devcon was causing me to fail.
> As a simple fix I have an IOCTL I call before I do the devcon.exe in a
> process and this then causes our driver to fail the QUERY_REMOVE and hence
> the driver does not unload and then I can use devcon to install multiple
> devices. Nice
>
>
> So all the above have “work arounds”. I do not have alot of time to get
> this to work hence I am using devcon.exe and I am using CreateProcess()
> from
> within and exe that I have that allows the installation of multiple
> devices
> we support and I can set them up from a text file that my exe using. The
> important thing here is I am using devcon.exe to do the installation.
>
> (4) Now XP Embedded is giving me a completely different behavior. I have
> selected enough components to give me the Device Manager and also Software
> Plug n Play devices.
> Now it may be that I need a component but I do not know which and I am
> pretty sure I have what I need. Now when I run devcon.exe from with with
> XP Embedded even at the command I sometimes get an devcon failed. I am
> using
>
> devcon install myinf.inf my_hard_id
>
> Now if I repeat the command above it will work sometimes I have to run it
> couple of times.
>
> Help
> Mike Jones
>
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