VB如何声明C的变量

Question

typedef int (__stdcall *CALLBACK_BROM_WRITE_BUF)(unsigned char finished_percentage, unsigned int sent_bytes, unsigned int total_bytes, void *usr_arg);
typedef struct {
const char  *m_p_bbchip_name; unsigned int *m_p_bank0_mem_cfg;  
unsigned int *m_p_bank1_mem_cfg;   unsigned int m_da_start_addr;   
const unsigned char *m_da_buf;   
unsigned int m_da_len;   CALLBACK_BROM_WRITE_BUF m_cb_download_da;
void  *m_cb_download_da_arg;
} BOOT_FLASHTOOL_ARG;
这个在VB中如何声明，特别是CALLBACK_BROM_WRITE_BUF m_cb_download_da

Answer 1

CALLBACK_BROM_WRITE_BUF: Dim lpfn As Long