C / C++ / MFC

const char* chTemp = (const char*)sTemp.GetBuffer(0);
sTemp.ReleaseBuffer();
TRACE(">>>>>>>>>>>>>>>>>>>%s\n", chTemp);

_Flaviu wrote:

the project is not multi-byte

CStringA ansiText("TestA");
LPCSTR ansi = (LPCSTR)ansiText;
TRACE("%s\n", ansi);

CString someText("Test");
ansi = (LPCSTR)someText;
TRACE("%s\n", ansi);

CStringA ansiText("TestA");
LPCSTR ansi = (LPCSTR)ansiText;
TRACE("%s\n", ansi);

1>d:\tempx\test\testdoc.cpp(53): error C2440: 'type cast' : cannot convert from 'CString' to 'LPCSTR'

CString someText("Test");
ansi = (LPCSTR)someText;    // <-- here is the error
TRACE("%s\n", ansi);

_Flaviu wrote:

for the second try, I got an error: C++ 1>d:\tempx\test\testdoc.cpp(53): error C2440: 'type cast' : cannot convert from 'CString' to 'LPCSTR' at C++ CString someText("Test"); ansi = (LPCSTR)someText; // <-- here is the error TRACE("%s\n", ansi); The project is unicode.

Of course you get the error since the CString contains the wide char text!
Either change the build to be MBCS/ANSI or convert CString to wchar_t* (or use _T() macro).

_Flaviu wrote:

TRACE(">>>>>>>>>>>>>>>>>>>%s\n", chTemp);

TRACE(">>>>>>>>>>>>>>>>>>>%S\n", chTemp); // capital S

using namespace cpplinq;

std::string words[4] = { "a", "bb", "ccc", "dddd" };

auto longest = from_array(words)
  >> aggregate(std::string(), [](const std::string &m, const std::string &c) {
    return m.length() > c.length() ? m : c; });