[DllImport("P230_DLL_VC.DLL")]
public static unsafe extern int RpcClose();调用 int a=RpcClose();
出错:无法在 DLL P230_DLL_VC.DLL 中找到名为 RpcClose 的入口点。
请教一下如何解决。
谢谢!
public static unsafe extern int RpcClose();调用 int a=RpcClose();
出错:无法在 DLL P230_DLL_VC.DLL 中找到名为 RpcClose 的入口点。
请教一下如何解决。
谢谢!
功能描述: 关闭通讯端口。
入口参数: 无。
返回值: 1 —— 操作成功;
-1 —— 通讯端口已关闭。
例子: retint=RpcClose()
如果是自己写的 extern "C"有加吗?
RpcOpen("COM1", 9600);
引用了一个.h文件//---------------------------------------------------------------------------
// Comsys P230 interface header file
// 2003-2-20 created by Yuwu Zhang
// [email protected]
//---------------------------------------------------------------------------#ifndef __P230_H__
#define __P230_H__#define SUCCESS 1
#define FAIL 0#define IC_TYPE_NUM 30
#define SLE4428 0
#define SLE4442 1
#define AT24C64 2
#define AT24C32 3
#define AT24C16 4
#define AT24C08 5
#define AT24C04 6
#define AT24C02 7
#define AT24C01A 8
#define AT1604 9
#define AT1608 10
#define AT45D011 11
#define AT45D021 12
#define AT45D041 13
#define AT45D081 14
#define AT45D161 15
#define AT45D321 16
#define AT45D641 17 #define MIFONE 20
#define MIFPRO 21#define ALL_KEY 0x000a
#define A1_KEY 0x0015
#define A1_ERASE_KEY 0x0018
#define A2_KEY 0x04c6
#define A2_ERASE_KEY 0x04c8
#define A3_KEY 0x05cb
#define A3_ERASE_KEY 0x05cd
#define A4_KEY 0x06d0
#define A4_ERASE_KEY 0x06d2#define AREA1 1
#define AREA2 2
#define AREA3 3
#define AREA4 4//used for at1608
#define USER_ZONE0 0
#define USER_ZONE1 1
#define USER_ZONE2 2
#define USER_ZONE3 3
#define USER_ZONE4 4
#define USER_ZONE5 5
#define USER_ZONE6 6
#define USER_ZONE7 7#define CONFIG_ZONE 8#define PW0_WRITE 0
#define PW0_READ 1
#define PW1_WRITE 2
#define PW1_READ 3
#define PW2_WRITE 4
#define PW2_READ 5
#define PW3_WRITE 6
#define PW3_READ 7
#define PW4_WRITE 8
#define PW4_READ 9
#define PW5_WRITE 10
#define PW5_READ 11
#define PW6_WRITE 12
#define PW6_READ 13
#define PW7_WRITE 14
#define PW7_READ 15 bool RpcOpen(const char *port, int baud_rate);
void RpcClose();
unsigned int DIreset(unsigned char cid,unsigned char op_mode,unsigned char *card_type, unsigned char *lenr,unsigned char *resp);
unsigned int DIcommand(unsigned char AB_cid,unsigned char len,unsigned char *cmd, unsigned char *lenr,unsigned char *resp);
unsigned int DIdeselect(unsigned char AB_cid);
unsigned int Mif_request(unsigned char mode,unsigned char *lenr,unsigned char *resp);
unsigned int Mif_anticoll(unsigned char *lenr,unsigned char *snr);
unsigned int Mif_select(unsigned char *snr,unsigned char *sak);
unsigned int Mif_increment(unsigned char block,unsigned char *value);
unsigned int Mif_decrement(unsigned char block,unsigned char *value);
unsigned int Mif_decrement_transfer(unsigned char block,unsigned char *value);
unsigned int Mif_Halt(void);
unsigned int Mif_Restore(unsigned char block);
unsigned int Mif_Transfer(unsigned char block);
unsigned int Mif_InitPurchase(unsigned char block,unsigned char *value);
unsigned int Mif_write(unsigned char block,unsigned char *value);
unsigned int Mif_read(unsigned char block,unsigned char *resp);
unsigned int Mif_authentication(unsigned char mode,unsigned char block,unsigned char *uid);
unsigned int SaveKey2E2(unsigned char sector,unsigned char mode,unsigned char *key);
unsigned int Mif_load_key(unsigned char mode,unsigned char block,unsigned char *key);
int ic_open(unsigned char type);
int ic_close();
int ic_verify(unsigned int key_id, unsigned int pwlen, unsigned char *password);
int pw_modify(unsigned int key_id, unsigned int pwlen, unsigned char *newpw);
int ic_read(unsigned int area_id,unsigned int startsite,unsigned int size,unsigned char *buf);
int ic_write(unsigned int area_id,unsigned int startsite,unsigned int size,unsigned char *buf);
int pwcnt_read(unsigned int key_id,unsigned char *buf);
int at1608_fuses();
int icc_reset(unsigned char *ret_buf);
int icc_instruction(unsigned char *cmd,unsigned char lc,unsigned char *ret_buf);
int sam_reset(unsigned char *ret_buf);
int sam_instruction(unsigned char *cmd,unsigned char lc,unsigned char *ret_buf);
int rf_prompt(int unit, bool on);
int reset();#endif
看.h文件里写的是返回空
不是int