ptr-to-member-function.cpp [plain text]
extern "C" int printf(...);
struct A {
int Ai;
bool foo(int* arg) const;
};
bool A::foo(int* arg) const {
printf("A::foo(%d)\n", *arg);
return true;
}
struct B : public A {
void bf() { printf("B::bf called\n"); }
};
struct C : public B { };
typedef void (A::*pmfa)();
typedef void (B::*pmfb)();
typedef void (C::*pmfc)();
struct X {
operator pmfa();
operator pmfb() {
return &B::bf;
}
};
void g(pmfc pm) {
C c;
(c.*pm)();
}
void test2(X x)
{
g(x);
}
struct B1 {
bool (A::*pmf)(int*) const;
B1(int i) : pmf(&A::foo), im(i) {
((A*)this->*pmf)(&im);
}
int im;
};
int main()
{
X x;
test2(x);
B1 b = B1(1);
B1 c = B1(2);
}