@msdn=http://search.microsoft.com/search/results.aspx?qu=$$$ @pinvoke=http://pinvoke.net/$$$.htm Summary: Retrieves the type and data for the specified registry value !!!!C# Signature: /* Retrieves the type and data for the specified registry value. - Original documented types */ [DllImport("Advapi32.dll", EntryPoint = "RegGetValueW", CharSet = CharSet.Unicode, SetLastError = true)] internal static extern LONG RegGetValue( SafeRegistryHandle hkey, string lpSubKey, string lpValue, EnumLib.RFlags dwFlags, out EnumLib.RType pdwType, IntPtr pvData, ref DWORD pcbData); /* Retrieves the type and data for the specified registry value. - C# Compliant types*/ [DllImport("Advapi32.dll", EntryPoint = "RegGetValueW", CharSet = CharSet.Unicode, SetLastError = true)] internal static extern Int32 RegGetValue( EnumLib.HKEY hkey, string lpSubKey, string lpValue, RFlags dwFlags, out RType pdwType, IntPtr pvData, ref UInt32 pcbData); !!!!VB Signature: Declare Function RegGetValue Lib "advapi32.dll" (TODO) As TODO !!!!User-Defined Types: /// <summary> /// http://msdn.microsoft.com/en-us/library/windows/desktop/ms724884(v=vs.85).aspx /// https://docs.microsoft.com/en-us/windows/desktop/api/Winreg/nf-winreg-reggetvaluea /// </summary> [Flags] internal enum RFlags { /// <summary> /// Any - No type restriction. (0x0000ffff) /// </summary> Any = 65535, /// <summary> /// Restrict type to REG_NONE. (0x00000001) /// </summary> RegNone = 1, /// <summary> /// Do not automatically expand environment strings if the value is of type REG_EXPAND_SZ. (0x10000000) /// </summary> Noexpand = 268435456, /// <summary> /// Bytes - Restrict type to REG_BINARY. (0x00000008) /// </summary> RegBinary = 8, /// <summary> /// Int32 - Restrict type to 32-bit RRF_RT_REG_BINARY | RRF_RT_REG_DWORD. (0x00000018) /// </summary> Dword = 24, /// <summary> /// Int32 - Restrict type to REG_DWORD. (0x00000010) /// </summary> RegDword = 16, /// <summary> /// Int64 - Restrict type to 64-bit RRF_RT_REG_BINARY | RRF_RT_REG_DWORD. (0x00000048) /// </summary> Qword = 72, /// <summary> /// Int64 - Restrict type to REG_QWORD. (0x00000040) /// </summary> RegQword = 64, /// <summary> /// A null-terminated string. /// This will be either a Unicode or an ANSI string, /// depending on whether you use the Unicode or ANSI functions. /// Restrict type to REG_SZ. (0x00000002) /// </summary> RegSz = 2, /// <summary> /// A sequence of null-terminated strings, terminated by an empty string (\0). /// The following is an example: /// String1\0String2\0String3\0LastString\0\0 /// The first \0 terminates the first string, the second to the last \0 terminates the last string, /// and the final \0 terminates the sequence. Note that the final terminator must be factored into the length of the string. /// Restrict type to REG_MULTI_SZ. (0x00000020) /// </summary> RegMultiSz = 32, /// <summary> /// A null-terminated string that contains unexpanded references to environment variables (for example, "%PATH%"). /// It will be a Unicode or ANSI string depending on whether you use the Unicode or ANSI functions. /// To expand the environment variable references, use the ExpandEnvironmentStrings function. /// Restrict type to REG_EXPAND_SZ. (0x00000004) /// </summary> RegExpandSz = 4, /// <summary> /// If pvData is not NULL, set the contents of the buffer to zeroes on failure. (0x20000000) /// </summary> RrfZeroonfailure = 536870912 } /// <summary> /// http://msdn.microsoft.com/en-us/library/windows/desktop/ms724884(v=vs.85).aspx /// </summary> internal enum RType { RegNone= 0, RegSz = 1, RegExpandSz = 2, RegMultiSz = 7, RegBinary = 3, RegDword = 4, RegQword = 11, RegQwordLittleEndian = 11, RegDwordLittleEndian = 4, RegDwordBigEndian = 5, RegLink = 6, RegResourceList = 8, RegFullResourceDescriptor = 9, RegResourceRequirementsList = 10, } !!!!Notes: Requires Windows Server 2003 SP1 !!!!Tips & Tricks: Please add some! !!!!Sample Code: uint pcbData = 0; EnumLib.RType type; var pvData = IntPtr.Zero; Api.advapi32.RegGetValue( EnumLib.HKEY.HKEY_CURRENT_USER, @"Software\LG Electronics\LG PC Suite IV\1.0", @"DS_URL", EnumLib.RFlags.Any, out type, pvData, ref pcbData); pvData = pvData.Reallocate(pcbData); Api.advapi32.RegGetValue( EnumLib.HKEY.HKEY_CURRENT_USER, @"Software\LG Electronics\LG PC Suite IV\1.0", @"DS_URL", type.ToFlag(), out type, pvData, ref pcbData); if (type == EnumLib.RType.RegSz) Console.WriteLine(pvData.ToUnicodeStr()); !!!!Alternative Managed API: Microsoft.Win32.Registry.GetValue() Documentation: RegGetValue@msdn on MSDN
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