C / C++ / MFC

error C2664: 'CGeneralAbstract::ParsePath' : cannot convert parameter 5 from 'char **' to 'const char *&'

Asdef Jaker wrote:

Thank you for the idea, but it doesn't work.

const char* secondPart;

--Mike--
Visual C++ MVP
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Ford, what's this fish doing in my ear?

Michael Dunn wrote:

Ford, what's this fish doing in my ear?

const char *secondPart = NULL;  // Note - Always Initialize!

const char *pPtrToConstChar = "First Const Const";
char* const pConstPtrToChar = "Second String";
 
pPtrToConstChar = "Second Const String";
// Allowed; the pointer can be changed to point somewhere else

strcpy( <code>pPtrToConstChar</code>, "Test" );
<code>// Fails; the data the pointer points to is constant and cannot be changed.</code>
 
<code>pConstPtrToChar</code> = "Third String";
<code>// Fails; the pointer is constant and cannot be reassigned to point somewher else.</code>

strcpy( pConstPtrToChar, "Test" ); 
//Allowed; the data the pointer points to is not constant and can be changed.

BOOL ReadFile(
    HANDLE hFile,
    LPVOID lpBuffer,
    DWORD nNumberOfBytesToRead,
    LPDWORD lpNumberOfBytesRead,
    LPOVERLAPPED lpOverlapped
);

LCI wrote:

Myabe use a TCHAR or LPVOID in the ReadFile and then once i get the value, convert that to an std::string??

LCI wrote:

If i were using a TCHAR, how would i convert that to std::string.

#ifdef _UNICODE
#define tstring wstring
#else
#define tstring string
#endif
 
TCHAR szBuffer[1234];
tstring str = szBuffer;

DavidCrow wrote:

TCHAR szBuffer[1234] = _T("David");

James R. Twine wrote:

I think that std::string is really std::basic_string< TCHAR >...

James R. Twine wrote:

...so it automatically becomes the "right kind of" string.

James R. Twine wrote:

I think that std::string is really std::basic_string< TCHAR >,

toxcct wrote:

...when the function expects a C-style string (array of character).