How to initialize gracenote::GnString?

Question

We have experimented GNSDK api with "C" code and "Console Application", it's OK, now, we are experimenting GNSDK wrappers with "C++" code and Qt 5.1, we are stopped by this simple line :

gracenote::GnString s_MyString = "another string";

How to make this line correct ?

Answer 1

The GnString from GNSDK is only used for managed strings coming out of the SDK. There are only a few instances where it is used, returning serialized GnUser data being one. All other strings to and from GNSDK are 'C' strings (direct string pointers). GNSDK types these as gnsdk_cstr_t.

For passing the serialized string into RegisterUser just give it the 'C' string (but ensure it is UTF8 encoded).

From QString, you should be able to do this:

gnsdk_cstr_t serializedUser = text.toUtf8().constData();

You can pass this serializedUser into RegisterUser.

In short, you should not have to create GnString for use in your app. It's only there for certain output values from GNSDK.