DeviceIoControl in C#

[Marina]

Does any know any sample of how to do a basic DeviceIoControl with something
like IOCTL_BATTERY_GETSYSTEMPOWERSTATUSEX2 in C#

I have been stuck all week
and google doesnt yield anything of use.

Please help me, thanks
Marina

 

[Cor Ligthert[MVP]]

Hi Marina,

Assuming that you are our Marina then how is the baby going?

Did you try it already in the newsgroup
microsoft.public.dotnet.languages.compactframework
It is and has always been a rather active newsgroup

http://groups.google.com/group/micr...ttery+Driver+Functions&qt_g=Search+this+group

Cor

 

[Marina]

Thank you but my mistake i meant to say:

DeviceIoControl using IOCTL_BATTERY_QUERY_STATUS (NOT CE)

Any ideas, life is hard

Marina

 

[Cor Ligthert[MVP]]

Marina,

There is a complete description in C++ for this how to handle this, should
be rather easy to tranform.

http://msdn.microsoft.com/en-us/library/bb204769(VS.85).aspx

Cor

 

[Marina]

Thank you YES this looks like what i need to do but in C# ??

The furthest i got is:

[DllImport("Kernel32.dll", SetLastError = false, CharSet =
CharSet.Auto)]
public static extern bool DeviceIoControl(
Microsoft.Win32.SafeHandles.SafeFileHandle hDevice,
EIOControlCode IoControlCode,
[MarshalAs(UnmanagedType.AsAny)]
[In] object InBuffer,
uint nInBufferSize,
[MarshalAs(UnmanagedType.AsAny)]
[Out] object OutBuffer,
uint nOutBufferSize,
ref uint pBytesReturned,
[In] ref System.Threading.NativeOverlapped Overlapped);

i think now i need to populate some structures but i cannot find any example
on google or anywhere?
Anymore ideas?

Marina