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PathCchIsRoot function (pathcch.h)

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Determines whether a path string refers to the root of a volume.

This function differs from PathIsRoot in that it accepts paths with "\", "\?" and "\?\UNC" prefixes.

Syntax

WINPATHCCHAPI BOOL PathCchIsRoot(
  [in, optional] PCWSTR pszPath
);

Parameters

[in, optional] pszPath

A pointer to the path string.

Return value

Returns TRUE if the specified path is a root, or FALSE otherwise.

Remarks

The following table shows the PathCchIsRoot return value for various paths.

Path PathCchIsRoot
"c:\" TRUE
"c:" FALSE
"c:\path1" FALSE
"\path1" TRUE
"path1" FALSE
"\\path1\path2" TRUE
"\\path1\path2\" FALSE
"\\path1\path2\path3" FALSE
"\\path1" TRUE
"\\path1\" FALSE
"\\" TRUE
"\\?\UNC\" TRUE
"\\?\UNC\path1\path2" TRUE
"\\?\UNC\path1\path2\" FALSE
"\\?\UNC\path1\path2\path3" FALSE
"\\?\UNC\path1" TRUE
"\\?\UNC\path1\" FALSE
"\\?\c:\" TRUE
"\\?\c:" FALSE
"\\?\c:\path1" FALSE
"\\?\Volume{guid}\" TRUE
"\\?\Volume{guid}" FALSE
"\\?\Volume{guid}\path1" FALSE
NULL FALSE
"" FALSE
 

This function returns TRUE for paths such as "", "X:" or "\\server\share". Paths such as "..\path2" or "\\server" return FALSE.

Requirements

Requirement Value
Minimum supported client Windows 8 [desktop apps | UWP apps]
Minimum supported server Windows Server 2012 [desktop apps | UWP apps]
Target Platform Windows
Header pathcch.h
Library Pathcch.lib