On 2012-10-08 10:06, Lubos Pintes wrote:
Hi,
I am playing with samples from Petzold's Programming Windows converted
by Andrej Mitrovic. Many thanks, Andrej. :-)
My question is about string conversion. There is a function in virtually
every sample named "toUTF16z", which if I understand properly, converts
string to UTF-16, so that they can be sent to various Windows API
functions. But string literals, for example in MessageBox, are fine, no
conversion is needed. I don't understand the magic, what is converted,
and when?
If some variable was used e.g. "appName.toUTF16z", and not "Error".toUTF16z
Without looking at the code, this is my guess:
The "toUTF16z" function converts a D string, of any Unicode encoding, to
UTF-16 and converts that to a C string. String literals in D have a
trailing null character \0 included making them compatible with
functions expecting C strings. String variables on the other do not have
the trailing null character and therefore needs a conversion.
--
/Jacob Carlborg
