C / C++ / MFC

class Foo
{
public:
    void* operator new(size_t blockSize)
    {
        // allocate 'blockSize' and return it, or throw std::bad_alloc (defined in <new>)
    }

    void operator delete(void* p)
    {
        // release 'p'. Note that p == nullptr is allowed!
    }

    /* rest of class */
};

1. A class-specific operator new() (if present)
2. The global operator new

// place outside any namespace!

void* operator new(size_t blockSize)
{
    // allocate 'blockSize' and return it, or throw std::bad_alloc (defined in <new>)
}

void operator delete(void* p)
{
    // release 'p'. Note that p == nullptr is allowed!
}

Anthony Appleyard wrote:

Does my Visual C++ still have an 8-bit-char-mode set of library functions? If so, how to call them?

Anthony Appleyard wrote:

C++

void diprintf(HWND db,int c,char*fmt,...)
{
    char C[256];
    vsprintf(C,fmt,(&fmt)+1);
    SetDlgItemText(db,c,C);
};

failed with this error:

1>faces.cpp(80): error C2664: 'int vsprintf(char *const ,const char const ,va_list)': cannot convert argument 3 from 'char *' to 'va_list'
1> faces.cpp(80): note: Types pointed to are unrelated; conversion requires reinterpret_cast, C-style cast or function-style cast

void diprintf(HWND db,int c,char*fmt,...)
{
    char C[256];
    va_list arg_ptr;
    va_start(arg_ptr, fmt);
    vsprintf(C,fmt,arg_ptr);
    SetDlgItemText(db,c,C);
};

vsprintf_s(C,256,fmt,arg_ptr);

Anthony Appleyard wrote:

What should this become?

Anthony Appleyard wrote:

I got accustomed to one-letter and two-letter variable names.

#define C 256
int Ƈ(HWND č, int c, char* Ç, ...)
{
    char ₵[C];
    va_list Ĉ;
    va_start(Ĉ, Ç);
    GetDlgItemText(č, c, ₵, C);
    ₵[C] = 0;
    return vsscanf(₵, Ç, Ĉ);
}