Example to call a static function

static_interface/a.h

@@ -22,8 +22,11 @@
 #ifndef A_H
 #define A_H
 
+//interface
 #include "a_interface.h"
+#include "iostream"
 
+//implementation
 namespace details
 {
 
@@ -34,10 +37,12 @@ class A
 {
 public:
     void NOINLINE foo() { g_count += 1; }
+    static void func0() {std::cout << "calling static f0()" << std::endl;}
 };
 
 }
 
+//instanciation
 using A = type<interface::A, details::A>;
 
 #endif

static_interface/a_interface.h

@@ -32,6 +32,8 @@ struct A
 {
     constexpr void foo()
     { T::details(this)->foo(); }
+    constexpr static void func0()
+    { T::details_type::func0(); }
 };
 
 }

static_interface/b.h

@@ -34,6 +34,8 @@ class B
 public:
     void bar()
     { m_a.foo(); }
+    static void func()
+    { interface::A<T>::func0();}
 
 private:
     interface::A<T> m_a;

static_interface/b_interface.h

@@ -32,6 +32,8 @@ struct B
 {
     constexpr void bar()
     { T::details(this)->bar(); }
+    constexpr static void func()
+    { T::details_type::func(); }
 };
 
 }

static_interface/main.cpp

@@ -26,6 +26,6 @@ int main()
 {
     B<A> b;
     b.bar();
-
+    B<A>::func();
     return 0;
 }