CString construction from std::string - copy chars or pointer

Question

If I convert a std::string into a CString using something like:

std::string ss("Foo");
CString cs( ss.c_str() );

Does the CString copy the characters from ss or does it simply copy the char* pointer?

My understanding of the c_str() function is that it returns a pointer to a character array owned by the std::string. So having a CString using this internally would seem like a really bad idea as any nonconstant method on either of them would then invalidate the pointer held in the other.

Answer 1

The CString constructor that takes a const char* will copy the data into its internal structure. It's the same as doing this:

CString test = "This is a test" or even this CString test("This is a test")

Answer 2

Documentation of CString constructor (link) says:

The constructors copy the input data into new allocated storage.

So, your data must be copied.

Answer 3

The documentation says that the string will be copied, so it will not manipulate the std::string buffer directly.

CString( LPCSTR lpsz );

lpsz - A null-terminated string to be copied into this CString object.