# Function Reference

# _WinAPI_StringLenW

Calculates the size of wide string

#include <WinAPIMisc.au3>
_WinAPI_StringLenW ( Const ByRef $tString )

## Parameters

$tString | String structure to process

## Return Value

Success: | String length in characters
Failure: | 0

## Remarks

Returned length does not include terminating null character.

## Related

_WinAPI_StringLenA

## See Also

Search lstrlenW in MSDN Library.

## Example

    #include <MsgBoxConstants.au3>
    #include <WinAPIMisc.au3>

    _Example()

    Func _Example()
        ; Make the string buffer. It's "wchar" type structure. Choosing the size of 64 characters.
        Local $tStringBuffer = DllStructCreate("wchar Data[64]")
        ; Fill it with some data
        DllStructSetData($tStringBuffer, "Data", "Gongoozle")

        MsgBox($MB_SYSTEMMODAL, "_WinAPI_StringLenW", "Length of a string inside the buffer is " & _WinAPI_StringLenW($tStringBuffer) & " characters.")
    EndFunc   ;==>_Example