Terry MacDonald wrote:
Hi,
New to the list, so apologies if this has already been answered, I
just can't find anything on my searches.
I am writings something in C++ and I am also using the
prepare/step/finalize approach to retrieve values from the sqlite
database: no callbacks - messy in C++.
There may be a simple answer to this but HOW do I get my return value
from using sqlite_column_text (a const unsigned char*) into a c++ string?
example...
string zName = sqlite3_column_text(pStmt,0) ;
fails as does numerous variations using static_cast, const_cast
If it returned const char* no problem, but the const unsigned char*
aaaahhhh! the STL uses char* not unsigned char*
Please say I'm stoopid and the answer is straight forward.
Cheers
Terry,
To use the sqlite3 return value to initialize a standard string in C++
you need to do the following:
const char* p = reinterpret_cast<const
char*>(sqlite3_column_text(pStmt, 0));
std::string zName(p);
The cast changes the type of the return value to match the type needed
by the string constructor. Then construct a string using that pointer.
You could combine the two statements into one and eliminate the
temporary pointer variable if you prefer.
HTH
Dennis Cote
