go dll char[]

 
이것은 4로 되돌아갑니다. 틀렸습니다.
tcallback((unsigned char*)pFrameRGB->data
 

func callDll() {
    dll := syscall.MustLoadDLL("hik_client.dll")
    callback := syscall.NewCallback(func(r uintptr, size int) (ret uintptr) {


       //var data = make([]byte, size)
       //
       // p := unsafe.Pointer(&r)
       // q := (*[4]byte)(p)
       // copy(data[0:], (*q)[0:])
       p := (*uint8)(unsafe.Pointer(&r))

        //fmt.Printf("value a is %s
",(*uint8)(unsafe.Pointer(&r)))
       //     []byte  ，    C      
       data := make([]uint8, 0)
       //   C   char  ，   '\0'   
       for *p != 0 {
          data = append(data, *p)  //     byte     
          r += unsafe.Sizeof(byte(0))  //     w，     char
          p = (*uint8)(unsafe.Pointer(r))  //       ，           char
       }
       //name := string(data)
       fmt.Printf("from callback1: %d %d
", size, len(data))//,name)
       return 0
    })