Re: CString Array to LPCTSTR *

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Vipin wrote:

c_str() returns a pointer to the internal string, but I don't have a mechanism to resize the string to certain number of characters unless I assign a dummy string that wide. CString is pretty useful in the case I mentioned, I call RegQueryValue(...) with NULL and then I get the required size of memory, I use GetBuffer(...) and then pass in the pointer returned by it to RegQueryValue(...) again. Also c_str() returns a const char *, GetBuffer(...) gets me LPTSTR which is not constant. ofcourse I can cast the const char * to char* to make it work

CString is well suited for windows programming when I can use with win32 apis, but std::string falls short.


Vipin:

Personally I do not like GetBuffer/ReleaseBuffer. And it's no easier than using the standard library in your case.

long nData;
RegQueryValue(..., NULL, &nData);

Now there is no convenience difference between

std::vector<TCHAR> data(nData+1);
RegQueryValue(..., &data[0], nData);
CString str(&data[0]);

and

CString str;
RegQueryValue(..., str.GetBuffer(nData+1), nData);
str.ReleaseBuffer();

If you do not actually need the CString, then the standard library method is a shorter way to get a LPTSTR.

David Wilkinson

.

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