Concatenation of LPWSTR strings

Question

In Visual C++, I have a

LPWSTR mystring;

which is already defined somewhere else in the code.

I want to create a new LPWSTR contain

Answer 1

The C++ way:

std::wstring mywstring(mystring);
std::wstring concatted_stdstr = L"hello " + mywstring + L" blah";
LPCWSTR concatted = concatted_stdstr.c_str();

Answer 2

std::wstring mystring_w(mystring);
std::wstring out_w = L"hello " + mystring_w + L" blablabla";
LPWSTR out = const_cast<LPWSTR>(out_w.c_str());

'out' is a LPWSTR wrapper for 'out_w'. So as long as 'out_w' is in scope it will be good to use. Also you don't need to delete 'out' as it's is binded to 'out_w' lifecycle.

This is pretty much the same answer 'user529758' gave, but with 'chris' proposed modification.

Answer 3

You can use StringCchCatW function