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DeviceIOControl (coredll)
 

coredll is for smart devices, not desktop Windows. Therefore, this information only applies to code using the .NET Compact Framework. To see if information for DeviceIOControl in other DLLs exists, click on Find References to the right.

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Summary
This function allows you to send and receive data to control certain devices of your CE device.

C# Signature:

[DllImport("coredll.dll", EntryPoint="DeviceIoControl", SetLastError=true)]
        internal static extern int DeviceIoControlCE(
            int hDevice,
            int dwIoControlCode,
            byte[] lpInBuffer,
            int nInBufferSize,
            byte[] lpOutBuffer,
            int nOutBufferSize,
            ref int lpBytesReturned,
            IntPtr lpOverlapped);

VB Signature:

<DllImport("CoreDll.dll")> Function DeviceIoControl(ByVal hDevice As Integer, ByVal dwIoControlCode As Integer, _
                         ByVal lpInBuffer As String, ByVal nInBufferSize As Integer, _
                         ByVal lpOutBuffer() As Byte, ByVal nOutBufferSize As Integer, _
                         ByRef lpBytesReturned As Integer, ByVal lpOverlapped As Integer) As Integer
    End Function

User-Defined Types:

None.

Alternative Managed API:

Do you know one? Please contribute it!

Notes:

None.

Tips & Tricks:

Please add some!!!
Please add some!

Sample Code:

DeviceIoControlCE(m_hPort, 0x1003, PosX, PosX.Length, outDataX, outDataX.Length, ref xfer, IntPtr.Zero)

/* From Windows Mobile Unified Sensor API (http://www.codeplex.com/sensorapi) */

static void DeviceIoControl(int controlCode, int[] inBuffer, int[] outBuffer)
    {
        IntPtr file = NativeMethods.CreateFile("ACS1:", 0, 0, IntPtr.Zero, ECreationDisposition.OpenExisting, 0, IntPtr.Zero);
        if (file == (IntPtr)(-1))
        throw new InvalidOperationException("Unable to Create File");

        try
        {
        int bytesReturned = 0;
        int inSize = sizeof(int) * inBuffer.Length;
        int outSize = sizeof(int) * outBuffer.Length;
        if (!NativeMethods.DeviceIoControl(file, controlCode, inBuffer, inSize, outBuffer, outSize, ref bytesReturned, IntPtr.Zero))
            throw new InvalidOperationException("Unable to perform operation.");
        }
        finally
        {
        NativeMethods.CloseHandle(file);
        }
    }

/* From Windows Mobile Unified Sensor API (http://www.codeplex.com/sensorapi) */

Documentation

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