PathGetDriveNumberW function (shlwapi.h)

Article
11/20/2024

Searches a path for a drive letter within the range of 'A' to 'Z' and returns the corresponding drive number.

Syntax

int PathGetDriveNumberW(
  [in] LPCWSTR pszPath
);

Parameters

[in] pszPath

Type: LPCTSTR

A pointer to a null-terminated string of maximum length MAX_PATH that contains the path to be searched.

Return value

Type: int

Returns 0 through 25 (corresponding to 'A' through 'Z') if the path has a drive letter, or -1 otherwise.

Remarks

Note

The shlwapi.h header defines PathGetDriveNumber as an alias that automatically selects the ANSI or Unicode version of this function based on the definition of the UNICODE preprocessor constant. Mixing usage of the encoding-neutral alias with code that is not encoding-neutral can lead to mismatches that result in compilation or runtime errors. For more information, see Conventions for Function Prototypes.

Requirements

Requirement	Value
Minimum supported client	Windows 2000 Professional, Windows XP [desktop apps only]
Minimum supported server	Windows 2000 Server [desktop apps only]
Target Platform	Windows
Header	shlwapi.h
Library	Shlwapi.lib
DLL	Shlwapi.dll (version 4.71 or later)

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