mfc memcpy

MFC (Microsoft Foundation Class) is a C++ library provided by Microsoft for developing Windows desktop applications. The `memcpy` function is part of the C/C++ standard library, and it is commonly used in MFC applications for memory block copying.

The `memcpy` function in MFC allows you to copy a block of memory from one location to another. It takes three arguments: the destination pointer (`dst`), the source pointer (`src`), and the number of bytes to copy (`count`).

Here's an example of how you can use `memcpy` in an MFC application:

BYTE src[10] = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 };
BYTE dst[10];

memcpy(dst, src, sizeof(src));```

In this example, we have two arrays `src` and `dst` of type `BYTE`. We use `memcpy` to copy the contents of `src` to `dst`, ensuring that we copy the correct number of bytes (`sizeof(src)`).

Please note that MFC provides several other functions for memory copying and manipulation, such as `memmove`, which handles overlapping memory blocks more safely.