StrRStrIW function (shlwapi.h)

Article
02/22/2024

Searches for the last occurrence of a specified substring within a string. The comparison is not case-sensitive.

Syntax

PCWSTR StrRStrIW(
  [in]           PCWSTR pszSource,
  [in, optional] PCWSTR pszLast,
  [in]           PCWSTR pszSrch
);

Parameters

[in] pszSource

Type: PTSTR

A pointer to a null-terminated source string.

[in, optional] pszLast

Type: PCTSTR

A pointer into the source string that defines the range of the search. Set pszLast to point to a character in the source string, and the search will stop with the preceding character. Set pszLast to NULL to search the entire source string.

[in] pszSrch

Type: PCTSTR

A pointer to the substring to search for.

Return value

Type: PTSTR

Returns the address of the last occurrence of the substring if successful, or NULL otherwise.

Remarks

Note

The shlwapi.h header defines StrRStrI 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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