/// <summary>This macro is used to create a unique system I/O control code (IOCTL).</summary>
/// <param name="deviceType">
/// Defines the type of device for the given IOCTL.
/// This parameter can be no bigger then a WORD value.
/// The values used by Microsoft are in the range 0-32767 and the values 32768-65535 are reserved for use by OEMs and IHVs.
/// </param>
/// <param name="function">
/// Defines an action within the device category.
/// That function codes 0-2047 are reserved for Microsoft, and 2048-4095 are reserved for OEMs and IHVs.
/// The function code can be no larger then 4095.
/// </param>
/// <param name="method">Defines the method codes for how buffers are passed for I/O and file system controls.</param>
/// <param name="access">Defines the access check value for any access.</param>
/// <remarks>
/// The macro can be used for defining IOCTL and FSCTL function control codes.
/// All IOCTLs must be defined this way to ensure that no overlaps occur between Microsoft and OEMs and IHVs.
/// </remarks>
/// <returns>IO control code</returns>
private static UInt32 CTL_CODE(UInt16 deviceType, UInt16 function, WinAPI.METHOD method, WinAPI.FILE_ACCESS access)
{
return((UInt32)((deviceType << 16) | ((UInt16)access << 14) | (function << 2) | (Byte)method));
}
/// <summary>This macro is used to create a unique system I/O control code (IOCTL).</summary>
/// <param name="deviceType">
/// Defines the type of device for the given IOCTL.
/// This parameter can be no bigger then a WORD value.
/// The values used by Microsoft are in the range 0-32767 and the values 32768-65535 are reserved for use by OEMs and IHVs.
/// </param>
/// <param name="function">
/// Defines an action within the device category.
/// That function codes 0-2047 are reserved for Microsoft, and 2048-4095 are reserved for OEMs and IHVs.
/// The function code can be no larger then 4095.
/// </param>
/// <param name="access">Defines the access check value for any access.</param>
/// <remarks>
/// The macro can be used for defining IOCTL and FSCTL function control codes.
/// All IOCTLs must be defined this way to ensure that no overlaps occur between Microsoft and OEMs and IHVs.
/// </remarks>
/// <returns>IO control code</returns>
private static UInt32 CTL_CODE(UInt16 deviceType, UInt16 function, WinAPI.FILE_ACCESS access)
{
return(CTL_CODE(deviceType, function, WinAPI.METHOD.BUFFERED, access));
}
