Hi All,
Except function pointer to a static member funciton of a class (or a
function).
As the following code, I could pointer a non-static member function of
a class.
And "Equal" was printed, the pointer has meaning.
But how can I use it??
I.e., I'd like to call the member method by using the function pointer
(like using c function pointer).
class TMyClass
{
public:
int DoIt(float a, char b, char c){ ... };
}
int (TMyClass::*pt2Member)(float, char, char) = NULL;
pt2Member = &TMyClass::DoIt;
// C++
if(pt2Member== &TMyClass::DoIt)
cout << "Equal" << endl;
pt2Member(1.2f, 'a', 'b'); //<------ error.
As u know, in case that the function pointer piont a non-static member
function, the pointer can invoke the member function. 1 2548
Assertor wrote: [..] As the following code, I could pointer a non-static member function of a class. And "Equal" was printed, the pointer has meaning.
But how can I use it??
You need an instance of the class in the form of an object, a reference,
or a pointer.
I.e., I'd like to call the member method by using the function pointer (like using c function pointer).
class TMyClass { public: int DoIt(float a, char b, char c){ ... }; }
; int (TMyClass::*pt2Member)(float, char, char) = NULL; pt2Member = &TMyClass::DoIt;
I suppose this is inside a function of some kind. // C++ if(pt2Member== &TMyClass::DoIt) cout << "Equal" << endl;
pt2Member(1.2f, 'a', 'b'); //<------ error.
You need an instance of 'TMyClass', and then use it:
TMyClass t;
(t.*pt2Member)(1.2f, 'a', 'b');
As u know, in case that the function pointer piont a non-static member function, the pointer can invoke the member function.
Huh?
V
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