RtlPrefixUnicodeString function (ntddk.h)

The RtlPrefixUnicodeString routine compares two Unicode strings to determine whether one string is a prefix of the other.

Syntax

NTSYSAPI BOOLEAN RtlPrefixUnicodeString(
  [in] PCUNICODE_STRING String1,
  [in] PCUNICODE_STRING String2,
  [in] BOOLEAN          CaseInSensitive
);

[in] String1

Pointer to the first string, which might be a prefix of the buffered Unicode string at String2.

[in] String2

Pointer to the second string.

[in] CaseInSensitive

If TRUE, case should be ignored when doing the comparison.

RtlPrefixUnicodeString returns TRUE if String1 is a prefix of String2.

Requirement	Value
Minimum supported client	Available starting with Windows 2000.
Target Platform	Universal
Header	ntddk.h (include Ntddk.h)
Library	NtosKrnl.lib
DLL	NtosKrnl.exe
IRQL	PASSIVE_LEVEL