这是我的代码：

#include <cstdlib>
#include <iostream>
#include <stdio.h>
#include <windows.h>

using namespace std;

typedef int (__cdecl *MYPROC)(LPWSTR);

int main()
{
    HINSTANCE hinstDLL;
    MYPROC ProcAdd;   
    hinstDLL = LoadLibrary("LmServerAPI.dll");
    if(hinstDLL != NULL){
        ProcAdd = (MYPROC) GetProcAddress(hinstDLL,"LmServer_Login");            
        if(ProcAdd != NULL){
            const char* IP = "xxx.177.xxx.23";
            const char* name = "username";
            const char* pass = "password";
            int port = 888;
            ProcAdd(IP,port,name,pass);
            system ("pause");          
        }          
    }
}

我收到了这个错误：

cannot convert const char*' toWCHAR*’ in argument passing

我必须使用哪种变量用于这些参数以及如何使用？