Windows is designed to run on little-endian computer architectures. Note that the final terminator must be factored into the length of the string. The first \0 terminates the first string, the second to the last \0 terminates the last string, and the final \0 terminates the sequence. String1\0 String2\0 String3\0 LastString\0\0 To expand the environment variable references, use the ExpandEnvironmentStrings function.Ī null-terminated Unicode string that contains the target path of a symbolic link that was created by calling the RegCreateKeyEx function with REG_OPTION_CREATE_LINK.Ī sequence of null-terminated strings, terminated by an empty string (\0). It will be a Unicode or ANSI string depending on whether you use the Unicode or ANSI functions. Some UNIX systems support big-endian architectures.Ī null-terminated string that contains unexpanded references to environment variables (for example, “%PATH%”). Therefore, this value is defined as REG_DWORD in the Windows header files. Visit this Microsoft document for more details, including explanation of String Values and Byte Formats. The following table describes the Windows registry values and types. Most of the entries you will see in Windows 10 registry are DWORD (32-bit) and most of the Windows 10 operating systems in use these days are Windows 64-bit. So you shouldn’t confuse them with the type of Windows 10 operating system (32-bit or 64-bit). If the instructions say to use DWORD then you use DWORD, if the instructions say to use QWORD then you use QWORD. You should simply follow the instructions given to you in a document. The REG-DWORD value stores a 32-bit number and REG_QWORD value stores a 64-bit number. They represent the type of data that will be stored in a value. These numbers (32-bit or 64-bit) do not correspond to the Windows 10 operating systems. For example, the REG_DWORD value can store a type of data that’s a 32-bit number and REG_QWORD value can store a type of data that’s a 64-bit number. When you store data under a registry, you have to specify certain values and the type of data that is being stored. In this article, I want to explain the difference between the two, in case you are wondering when to use one or the other.įirst of all, I just want to make it clear that whether to use DWORD (32-bit) value or QWORD (64-bit) value has absolutely nothing to do with your Windows 10 version (32-bit vs.
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