试图通过指针调用成员函数 [英] Trying to call a member function through a pointer
问题描述
我试图通过指向它的指针调用成员函数，并且不能完全正确地获得
语法。这个编译错误C2064，术语没有
求值为1参数的函数..这是
无法编译的最小代码：
类CTest {
void函数（char * param）;
};
无效CTest :: function（char * param）
{
//用parm做点什么;
}
void（CTest :: * pFunction）（char * param）;
int _tmain（int argc，_TCHAR * argv []）
{
char * value;
pFunction（value）; // **** C2064
}
我无法弄清楚正确的语法。谁能帮我？谢谢！
布鲁斯。
I am trying to call a member function through a pointer to it and can''t get
the syntax exactly right. This compiles with an error C2064, term does not
evaluate to a function taking 1 argument.. Here is the smallest code that
will not compile:
class CTest {
void function( char* param );
};
void CTest::function( char* param )
{
// Do something with parm;
}
void ( CTest::*pFunction )( char* param );
int _tmain(int argc, _TCHAR* argv[])
{
char* value;
pFunction( value ); // **** C2064
}
I just can''t figure out the right syntax. Can anyone help me? Thanks!
Bruce.
推荐答案
布鲁斯。写道：
Bruce. wrote:
我试图通过指向它的指针调用成员函数和
不能正确地获得语法。
I am trying to call a member function through a pointer to it and
can''t get the syntax exactly right.
< http://www.parashift.com/c++-faq-lite/pointers-to-members.html>
Brian
<http://www.parashift.com/c++-faq-lite/pointers-to-members.html>
Brian
" Default User" < de *********** @ yahoo.comwrote in message
news：5d ************* @ mid.individual.net ...
"Default User" <de***********@yahoo.comwrote in message
news:5d*************@mid.individual.net...
布鲁斯。写道：
Bruce. wrote:
>我试图通过指向它的指针来调用成员函数，并且
不能正确地获得语法。
>I am trying to call a member function through a pointer to it and
can''t get the syntax exactly right.
< http://www.parashift.com/c++-faq-lite/pointers-to-members.html>
<http://www.parashift.com/c++-faq-lite/pointers-to-members.html>
我无法弄清楚如何更改我的代码进行编译。它说一个
成员函数是：
它的类型是int（Fred :: *）（char，float）。如果一个非静态成员函数
类Fred
这就是我声明它的方式。我做错了什么？
我需要做些什么不同的事情？
布鲁斯。
I can''t figure out from that how to change my code to compile. It say a
member function is:
Its type is "int (Fred::*)(char,float)" if a non-static member function of
class Fred
And that is exactly the way I have it declared. What am I doing wrong?
What do I need to do differently?
Bruce.
布鲁斯。写道：
Bruce. wrote:
" Default User" < de *********** @ yahoo.comwrote in message
news：5d ************* @ mid.individual.net ...
"Default User" <de***********@yahoo.comwrote in message
news:5d*************@mid.individual.net...
> Bruce。写道：
>Bruce. wrote:
>>我试图通过指向它的指针来调用成员函数，并且
无法正确地获得语法。
>>I am trying to call a member function through a pointer to it and
can''t get the syntax exactly right.
< http://www.parashift.com/c++-faq-lite/pointers-to-members.html>
<http://www.parashift.com/c++-faq-lite/pointers-to-members.html>
我无法弄清楚如何更改我的代码进行编译。它说一个
成员函数是：
它的类型是int（Fred :: *）（char，float）。如果一个非静态成员函数
类Fred
这就是我声明它的方式。我做错了什么？
我需要做些什么不同的事情？
I can''t figure out from that how to change my code to compile. It say a
member function is:
Its type is "int (Fred::*)(char,float)" if a non-static member function of
class Fred
And that is exactly the way I have it declared. What am I doing wrong?
What do I need to do differently?
没有上下文很难说出来！
啊，看看你原来的帖子，我看到你试图调用
成员函数而没有该类的实例来调用它。你好b / b
不能这样做。
-
Ian Collins。
Hard to tell without the context!
Ah, looking at your original post I see you are attempting to call the
member function without an instance of the class to call it on. You
can''t do that.
--
Ian Collins.
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