The following code shows how to create a CString and print it to standard output: #include ĬString aCString = CString(_T('A string')) ĭescribes basic CString operations, including creating objects from C literal strings, accessing individual characters in a CString, concatenating two objects, and comparing CString objects.ĭiscusses using Unicode and MBCS with CString.ĬString Operations Relating to C-Style Stringsĭescribes manipulating the contents of a CString object like a C-style null-terminated string.Īllocating and Releasing Memory for a BSTRĭiscusses using memory for a BSTR and COM objects.Įxplains that explicit cleanup in MFC 3.0 and later is no longer necessary.Įxplains how to pass CString objects to functions and how to return CString objects from functions. To add more capabilities than CString, CStringA, or CStringW currently offer, you should create a subclass of CStringT that contains the additional features. For managed-code (C++/CLI) projects, use System::String. The following set of string classes can be used without linking an MFC library, with or without CRT support: CAtlString, CAtlStringA, and CAtlStringW.ĬString is used in native projects. You can insert a NULL at other locations in a CString, but it may produce unexpected results. CString includes the null terminator when it exports a C-style string. CString tracks the string length for faster performance, but it also retains the NULL character in the stored character data to support conversion to LPCWSTR. CString accepts NULL-terminated C-style strings. A CString object supports either the char type or the wchar_t type, depending on whether the MBCS symbol or the UNICODE symbol is defined at compile time.Ī CString object keeps character data in a CStringData object. A CStringA object contains the char type, and supports single-byte and multi-byte (MBCS) strings. The CString, CStringA, and CStringW classes are specializations of a class template called CStringT based on the type of character data they support.Ī CStringW object contains the wchar_t type and supports Unicode strings. To use CString, include the atlstr.h header. For reference documentation about the CString class, see the documentation for CStringT. If (!GetProcessId(shellExInfo.The topics in this section describe how to program with CString. MessageBox(_T('Can't start console'), _T('Error'), NULL) ShellExInfo.lpFile = process_to_start.c_str() ShellExInfo.fMask = SEE_MASK_NOCLOSEPROCESS ShellExInfo.cbSize = sizeof(SHELLEXECUTEINFO) Std::wstring args = std::to_wstring(dll_loads_count) + L' ' + std::to_wstring(obj_count) + L' ' + std::to_wstring((int)m_hWnd)

Std::wstring process_to_start(L'Project2.exe') Int obj_count = std::stoi(text.GetString()) Int dll_loads_count = std::stoi(text.GetString()) Void CProject3Dlg::OnBnClickedButtonStartConsole()

Sizeof cstring mfc