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uint ReturnCode = 0;

while (ReturnCode == 0)

     ReturnCode = PowerEnumerate(IntPtr.Zero, IntPtr.Zero, IntPtr.Zero, PowerDataAccessor.ACCESS_SCHEME, Index, ReadBuffer, ref BufferSize);

     if (ReturnCode == 259) break; // no more data

     if (ReturnCode != 0)

       throw new COMException("Error occurred while enumerating power schemes. Win32 error code: " + ReturnCode);

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        throw new Exception("Error reading current power scheme. Native Win32 error code = " + res);

    ''' Retrieves the friendly name for the specified power setting, subgroup, or scheme, in Unicode (Each Char is 2 bytes).

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        throw new Exception("Error reading current power scheme. Native Win32 error code = " + res);

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[DllImport("powrprof.dll", SetLastError=true, CharSet=CharSet.Unicode)]

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        uint BufferSize = (uint)System.Text.ASCIIEncoding.Unicode.GetByteCount(name);

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[DllImport("iprop.dll", SetLastError=true, CharSet=CharSet.Unicode)]

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   Dim code As Integer

   code = UuidCreateSequential(myId)

   If code <> 0 Then

     Console.WriteLine("UuidCreateSequential failed: {0}", code)

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   Dim code As Integer

   code = UuidCreateSequential(myId)

   If code <> 0 Then

     Console.WriteLine("UuidCreateSequential failed: {0}", code)

There is an Unicode version call UuidFromStringW

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/// <param name="lpcwszUrl">A pointer to a null-terminated Unicode string that contains the URL of the HTTP request that the application is preparing to send.</param>

[DllImport("winhttp.dll", SetLastError = true, CharSet = CharSet.Unicode)]

Possible error codes include the folllowing:

Error Code - Description

ERROR_WINHTTP_BAD_AUTO_PROXY_SCRIPT - An error occurred executing the script code in the Proxy Auto-Configuration (PAC) file.

ERROR_NOT_ENOUGH_MEMORY - Not enough memory was available to complete the requested operation. (Windows error code)

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     NULL_CODEPAGE = 0x00000008,

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I tested this method in sync method, it is ok. But according to MSDN and C++ code, the second param should be NULL when use async method. This function cann't work.

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I can share more of the code if people are interested, but there are lots of API calls leading up to the call to MQSetQueueSecurity, so I'll just show the interesting parts here:

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Complete "simple sample" coded by Aprelov Sergey:

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[DllImport("imm32.dll", CharSet=CharSet.Unicode)]

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[DllImport("imm32.dll", CharSet=CharSet.Unicode)]

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