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DaWei · May 12th, 2006, 7:47 AM

Missing an asterisk.

Quote:

Originally Posted by MSDN

A pointer to a member of a class differs from a normal pointer because it has type information for the type of the member and for the class to which the member belongs. A normal pointer identifies (has the address of) only a single object in memory. A pointer to a member of a class identifies that member in any instance of the class. The following example declares a class, Window, and some pointers to member data.

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class Window
{
public:
    Window();                               // Default constructor.
    Window( int x1, int y1,                 // Constructor specifying
        int x2, int y2 );                   //  window size.
    BOOL SetCaption( const char *szTitle ); // Set window caption.
    const char *GetCaption();               // Get window caption.
    char *szWinCaption;                     // Window caption.
};

// Declare a pointer to the data member szWinCaption.
char * Window::* pwCaption = &Window::szWinCaption;

In the preceding example, pwCaption is a pointer to any member of class Window that has type char*. The type of pwCaption is char * Window:

. The next code fragment declares pointers to the SetCaption and GetCaption member functions.

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const char * (Window::*pfnwGC)() = &Window::GetCaption;
BOOL (Window::*pfnwSC)( const char * ) = &Window::SetCaption;