On Wednesday, 28 November 2018 at 10:44:05 UTC, Nicholas Wilson
wrote:
On Wednesday, 28 November 2018 at 07:22:46 UTC, bauss wrote:
If I have a class from D.
How would you use that class in C++?
Like what's the correct approach to this.
Would it work just by doing "extern(C++)" or will that only
work for D to use C++ classes?
If you have
foo.d
----
class Foo
{
int aMember;
void aMethod() { ... };
final aFinalMethod() { ... };
}
----
to expose that to C++ you need to add extern(C++) too Foo and
use it in C++ as a Foo*
foo.h
----
class Foo
{
int aMember;
virtual void aMethod();
void aFinalMethod();
};
----
If you can't/don't want to do that you can always pass it
around in C++ as an opaque pointer with functions that call the
member functions and get/set the variables (i.e. the pimpl
strategy).
Well unfortunately I cannot control the C++ side of things, but I
assume that it'll work properly with extern(C++) so I guess I
will just go ahead and try and see if everything works out. I
have access to the C++ source so at the very least I can see how
it's used there and if it's possible in the way I want it to. I
don't hope I have to have a separate C++ "bridge" to make it work.
