我正在尝试使用IBM的EHLLAPI与他们的Personal Communicator终端仿真器连接。我已经从this page复制了他们的示例代码,但是当我尝试构建它时,它给了我一个错误。
1>------ Build started: Project: PCOMAPI, Configuration: Debug Win32 ------
1> Source.cpp
1>Source.obj : error LNK2019: unresolved external symbol _hllapi@16 referenced in function _main
1>C:\Users\[username]\Documents\Visual Studio 2013\Projects\VPARSAPI\Debug\PCOMAPI.exe : fatal error LNK1120: 1 unresolved externals
我不完全确定_hllapi @ 16是什么,我在代码中没有看到它。自从我使用C ++以来已经有一段时间了,所以它可能是我想念的简单事情。代码如下:
#include <stdlib.h>
#include <stdio.h>
#include <windows.h>
#include "hapi_c.h"
int main(char **argv, int argc) {
int HFunc, HLen, HRc;
char HBuff[1];
struct HLDConnectPS ConnBuff;
// Send Key string for HOME+string+ENTER:
char SendString[] = "@0Hello World!@E";
HFunc = HA_RESET_SYSTEM;
HLen = 0;
HRc = 0;
hllapi(&HFunc, HBuff, &HLen, &HRc);
if (HRc != HARC_SUCCESS) {
printf("Unable to access EHLLAPI.\n");
return 1;
}
HFunc = HA_CONNECT_PS;
HLen = sizeof(ConnBuff);
HRc = 0;
memset(&ConnBuff, 0x00, sizeof(ConnBuff));
ConnBuff.stps_shortname = 'A';
hllapi(&HFunc, (char *)&ConnBuff, &HLen, &HRc);
switch (HRc) {
case HARC_SUCCESS:
case HARC_BUSY:
case HARC_LOCKED: // All these are OK
break;
case HARC_INVALID_PS:
printf("Host session A does not exist.\n");
return 1;
case HARC_UNAVAILABLE:
printf("Host session A is in use by another EHLLAPI application.\n");
return 1;
case HARC_SYSTEM_ERROR:
printf("System error connecting to session A.\n");
return 1;
default:
printf("Error connecting to session A.\n");
return 1;
}
HFunc = HA_SENDKEY;
HLen = strlen(SendString);
HRc = 0;
hllapi(&HFunc, SendString, &HLen, &HRc);
switch (HRc) {
case HARC_SUCCESS:
break;
case HARC_BUSY:
case HARC_LOCKED:
printf("Send failed, host session locked or busy.\n");
break;
default:
printf("Send failed.\n");
break;
}
HFunc = HA_DISCONNECT_PS;
HLen = 0;
HRc = 0;
hllapi(&HFunc, HBuff, &HLen, &HRc);
printf("EHLLAPI program ended.\n");
return 0;
}
我的链接器标志是:
答案 0 :(得分:2)
这是一个链接器错误。您需要将链接传递给链接器.lib文件,即导入库,用于EHLLAPI库。
事实上,查看documentation,此库中有许多.lib文件。您需要仔细研究文档,找出您需要的文档。
答案 1 :(得分:0)
如编译和链接部分所述,您必须包含 pcscal32.lib 以进行静态链接,因此可以解析* hapi_c.h *中的符号。< / p>