C++博客-jianc's blog-最新评论

re: MFC点击Dialog窗体可拖动

zhouwx — Tue, 07 May 2013 08:39:00 GMT

很好,Test通过

zhouwx 2013-05-07 16:39 发表评论

re: C++Primer 读书笔记19 多继承和虚拟继承

jianc — Wed, 11 Apr 2012 03:45:00 GMT

@az
#include

using namespace std;

class a
{
public:
bool bstatus;
a(){
bstatus = false;
cout << "class a:bstatus value address " << &bstatus < }
void aa1(){}
void aa2(){}
};
class b : virtual private a
{
public:
a::bstatus;//回傳false or true
b(){
cout << "class b:bstatus value address " << &bstatus < }
};
class c : virtual private a
{
public:
a::bstatus;//回傳false or true

c(){
cout << "class c:bstatus value address " << &bstatus < }
};

class d : private b, private c
{
public:
b::bstatus; //或者c::bstatus 效果一样

d(){
cout << "class d:bstatus value address " << &bstatus < }
};

int main()
{
d obj;

cout << obj.bstatus <
return 0;
}

输出结果:
class a:bstatus value address 0012FF7C
class b:bstatus value address 0012FF7C
class c:bstatus value address 0012FF7C
class d:bstatus value address 0012FF7C
0

-------------------
//bstatus内存地址一样, 既class a, class b, class c, class d共用class a的bStatus

jianc 2012-04-11 11:45 发表评论

re: C++Primer 读书笔记19 多继承和虚拟继承

az — Wed, 11 Apr 2012 02:57:00 GMT

再次請教一下
假設想要class a, class b, class c 和class d 都要共用class a的bStatus
(class a其他的成員資料或函式都private inheritance起來只留bStatus
給inheritance的class共用)

請問這樣有方法嗎?

謝謝

az 2012-04-11 10:57 发表评论

re: C++Primer 读书笔记19 多继承和虚拟继承

az — Tue, 10 Apr 2012 12:06:00 GMT

感謝^_^

az 2012-04-10 20:06 发表评论

re: C++Primer 读书笔记19 多继承和虚拟继承

jianc — Tue, 10 Apr 2012 11:17:00 GMT

@az
class d : public b, public c
{
public:
b::bstatus; //或者c::bstatus;
};

这样就避免了ambiguous引用

jianc 2012-04-10 19:17 发表评论

re: C++Primer 读书笔记19 多继承和虚拟继承

az — Tue, 10 Apr 2012 03:15:00 GMT

耽擱一下問個問題
class a
{
public:
bool bstatus;
void aa1(){}
void aa2(){}
};
class b : virtual private a
{
public:
a::bstatus;//回傳false or true
};
class c : virtual private a
{
public:
a::bstatus;//回傳false or true
};

class d : puclib b, public c
{
//當這邊用到bstatus 會產生ambiguous
}
請問有什麼方法可以避免嗎?

az 2012-04-10 11:15 发表评论

re: lua基础知识

coreBugZJ — Sat, 17 Mar 2012 05:34:00 GMT

学习了

coreBugZJ 2012-03-17 13:34 发表评论