StrCatW function (shlwapi.h)

Appends one string to another.

Syntax

PWSTR StrCatW(
  [in, out] PWSTR  psz1,
  [in]      PCWSTR psz2
);

Parameters

[in, out] psz1

Type: PTSTR

A pointer to a null-terminated string. When this function returns successfully, this string contains its original content with the string psz2 appended. This buffer must be large enough to hold both strings and the terminating null character.

[in] psz2

Type: PCTSTR

A pointer to a null-terminated string to be appended to psz1.

Return value

Type: PTSTR

Returns a pointer to psz1, which holds the combined strings.

Remarks

Security Warning:  Using this function incorrectly can compromise the security of your application. The first argument, psz1, must be large enough to hold psz2 and the closing '\0', otherwise a buffer overrun may occur. Buffer overruns may lead to a denial of service attack against the application if an access violation occurs. In the worst case, a buffer overrun may allow an attacker to inject executable code into your process, especially if psz1 is a stack-based buffer. Consider using one of the following alternatives: StringCbCat, StringCbCatEx, StringCbCatN, StringCbCatNEx, StringCchCat, StringCchCatEx, StringCchCatN, or StringCchCatNEx. You should review Security Considerations: Microsoft Windows Shell before continuing.

Requirements