How do you measure Tchar?
Getting size of a TCHAR array
- Hopefully you use const or #define and not magic numbers (like 256 ) directly in your code.
- array[i] = FindFileData.
- 1D-array: *(TCHAR(*)[sizeof array/sizeof**array)])array.
- I’ve edited the question.
- BTW: You really don’t want to use TCHAR at all, as there are exactly two valid uses: 1.
How many bytes is a Tchar?
if you use _UNICODE the sizeof(TCHAR) == sizeof(unsigned short) meaning 2 bytes!
What is Tchar?
TCHAR is simply a macro that expands to char in ANSI builds (i.e. _UNICODE is not defined) and wchar_t in Unicode builds ( _UNICODE is defined). There are various string types based on the TCHAR macro, such as LPCTSTR (long pointer to a constant TCHAR string).
What is a wide string?
“Wide character string” is referring to the encoding of the characters in the string. From Wikipedia: A wide character is a computer character datatype that generally has a size greater than the traditional 8-bit character. The increased datatype size allows for the use of larger coded character sets.
What is size of wchar_t in C++?
Just like the type for character constants is char, the type for wide character is wchar_t. This data type occupies 2 or 4 bytes depending on the compiler being used.
What is a wchar_t in C++?
wchar_t is a wide character. It is used to represent characters which require more memory to represent them than a regular char . It is, for example, widely used in the Windows API. However, the size of a wchar_t is implementation-dependant and not guaranteed to be larger than char .
What does Tchar H do?
By using the tchar. h, you can build single-byte, Multibyte Character Set (MBCS), and Unicode applications from the same sources.
How do you convert Lpwstr to char?
use WideCharToMultiByte() method to convert multi-byte character. Here is example of converting from LPWSTR to char* or wide character to character.
How wide is wchar_t?
Just like the type for character constants is char, the type for wide character is wchar_t. This data type occupies 2 or 4 bytes depending on the compiler being used. Mostly the wchar_t datatype is used when international languages like Japanese are used.
How big is a Wchar?
The wchar_t type is an implementation-defined wide character type. In the Microsoft compiler, it represents a 16-bit wide character used to store Unicode encoded as UTF-16LE, the native character type on Windows operating systems.
How big is a wchar_t?
16-bit
The wchar_t type is an implementation-defined wide character type. In the Microsoft compiler, it represents a 16-bit wide character used to store Unicode encoded as UTF-16LE, the native character type on Windows operating systems.
How is the strlen function in the C library?
The C library function size_t strlen (const char *str) computes the length of the string str up to, but not including the terminating null character. Following is the declaration for strlen () function. str − This is the string whose length is to be found. This function returns the length of string.
What is the declaration for strlen ( ) in C?
Following is the declaration for strlen () function. str − This is the string whose length is to be found. This function returns the length of string. The following example shows the usage of strlen () function. Let us compile and run the above program that will produce the following result −
Is the return value of strlen always equal to the number of bytes?
Remarks. strlen interprets the string as a single-byte character string, so its return value is always equal to the number of bytes, even if the string contains multibyte characters. wcslen is a wide-character version of strlen; the argument of wcslen is a wide-character string and the count of characters is in wide (two-byte) characters.
How to return the length of a Tchar string?
According to documentation, functions like _tcslen, lstrlen and other, applied on TCHAR strings, return the length in characters, not in bytes. Viorel is right about _tcslen returning count in TCHAR s.