System.IOUtils.TPathPrefixType
Delphi
TPathPrefixType = (pptNoPrefix, pptExtended, pptExtendedUNC);
C++
enum class DECLSPEC_DENUM TPathPrefixType : unsigned char { pptNoPrefix, pptExtended, pptExtendedUNC };
Properties
| Type | Visibility | Source | Unit | Parent |
|---|---|---|---|---|
| enum | public | System.IOUtils.pas System.IOUtils.hpp |
System.IOUtils | System.IOUtils |
Description
Enumerates the possible extended path prefix types.
TPathPrefixType enumerates the possible types of extended path types. An extended prefix looks like \\?\ or \\?\UNC\. The following are possible values of TPathPrefixType.
| Value | Meaning |
|---|---|
|
pptNoPrefix |
Path has no extended prefix. |
|
pptExtended |
Path has an extended prefix (\\?\). |
|
pptExtendedUNC |
Path has an extended UNC prefix (\\?\UNC\). |
Paths prefixed with \\?\ or \\?\UNC\ are Windows-specific and can be of very big lengths and not restricted to 255 characters (MAX_PATH). It is a common case today to manage paths longer than 255 characters. Prefixing those with \\?\ solves the problem.