Home » Developing U++ » U++ Developers corner » using Ctrl::Add; required for templates / overloaded virtual functions
| Re: using Ctrl::Add; required for templates / overloaded virtual functions [message #27058 is a reply to message #27054] |
Wed, 23 June 2010 16:38   |
mrjt
Messages: 705
Registered: March 2007
Location: London
|
Contributor |
|
|
I don't understand.
Option 2 is correct - ArrayCtrl doesn't overload Add(Ctrl &) (it's not even virtual), so obviously it's being called on the Ctrl base class.
Option 1 doesn't work because ArrayCtrl doesn't overload Add(Ctrl &), so the pointer signature is incorrect.
If you add the following to MyD then both options work correctly:
class MyD
: public ArrayCtrl
{
public:
typedef MyD CLASSNAME;
virtual ~MyD() {}
void Add(Ctrl& ctrl) { Ctrl::Add(ctrl); Update(); }
};
Option 1: Calls MyD::Add
void (MyD::* mfp)(Ctrl &) = &MyD::Add;
(md.*mfp)(l);
Option2 calls Ctrl::Add
void (Ctrl::* mfp2)(Ctrl &) = &Ctrl::Add;
(md.*mfp2)(l);
This is also possible, and perhaps most useful:
void (MyD::* mfp)(Ctrl &) = &Ctrl::Add;
(Tested with latest SVN and MSC8)
[Updated on: Wed, 23 June 2010 16:44] Report message to a moderator |
|
|
|
Current Time: Thu May 16 17:36:45 CEST 2024
Total time taken to generate the page: 0.02746 seconds
|
Members
Pages
Help
Register
Login
Home
