2013 12 28 chu tan mfc - LanderlYoung/LanderlYoung.github.io GitHub Wiki
这几天要写智能卡大作业，老师要求必须有图形界面。 作业本身没什么难的，调用提供的API函数完成相应功能。倒是图形界面让我觉得比较有趣，以前一直用java写图形界面。但是java程序运行起来比较麻烦，首先得有jre，其次jar也不一定能双击运行，当时就萌生了写个MFC程序的念头，囿于时间有限一直没学习。这次倒是给了我一个大好机会。
#pragma once
#include <iostream>
#include <Windows.h>
class CardManager {
public:
enum DATA_T {
PUBLISHER,
CARD_ID,
USER_NAME,
};
private:
const short PUBLISHER_ADDR = 0x30;
const short PUBLISHER_LEN = 0x10;
const short CARD_ID_ADDR =
PUBLISHER_ADDR + PUBLISHER_LEN;
const short CARD_ID_LEN = 0x10;
const short USER_NAME_ADDR =
CARD_ID_ADDR + CARD_ID_LEN;
const short USER_NAME_LEN = 0x10;
const short BALANCE_ADDR =
USER_NAME_ADDR + USER_NAME_LEN;
const short BALANCE_LEN = 0x04; //sizeof(float)
const short BALANCE_BUF_ADDR =
BALANCE_ADDR + BALANCE_LEN;
const short BALANCE_BUF_LEN = BALANCE_LEN;
HANDLE m_icdev;
bool m_passwdChecked;
void(*noPasswdFunc)(void);
void(*notInitFunc)(void);
inline bool passWordConfirm()
{
if (noPasswdFunc && !m_passwdChecked) {
noPasswdFunc();
}
return m_passwdChecked;
}
inline bool initConfirm()
{
if (notInitFunc && !m_icdev) {
notInitFunc();
}
return m_icdev != 0;
}
bool writeBalance(float num);
bool writeInfo(DATA_T info_type,
const std::string& data);
float getBuffer();
bool writeBuffer(float balance);
static unsigned char *float2bytes(float num);
static float bytes2float(unsigned char* bytes);
public:
CardManager();
virtual ~CardManager();
inline bool isInited()
{
return m_icdev != 0;
}
inline void setNoPasswdCallBack(void(*callBack)(void))
{
noPasswdFunc = callBack;
}
inline void setNotInitCallBack(void(*callback)(void))
{
notInitFunc = callback;
}
/*
return 0 for ok
1 for init device error
2 for no card
*/
int init(int port, long baud);
bool disConnect();
int getInfo(DATA_T data_type, std::string& out);
bool checkPassWd(const unsigned char* key);
/*
return 0 for ok
*/
int release(float initialBalance);
/*
return 0 for ok
*/
int consume(float costs);
float getBalance();
int charge(float amount);
};