Use Point2D in the C++ ffi when setting the window position

api/cpp/include/slint.h

@@ -185,7 +185,7 @@ public:
 
     void set_position(const slint::Point<int> &pos)
     {
-        cbindgen_private::slint_windowrc_set_position(&inner, pos.x, pos.y);
+        cbindgen_private::slint_windowrc_set_position(&inner, &pos);
     }
 
     slint::Size<unsigned int> size() const { return cbindgen_private::slint_windowrc_size(&inner); }

api/cpp/include/slint_point.h

@@ -19,4 +19,11 @@ struct Point
     bool operator==(const Point &other) const = default;
 };
 
+namespace cbindgen_private {
+// The Size types are expanded to the Point2D<...> type from the euclid crate which
+// is binary compatible with Point<T>
+template<typename T>
+using Point2D = Point<T>;
+}
+
 }