无法在参数传递中将'const char *'转换为'WCHAR *' [英] Cannot convert 'const char*' to 'WCHAR*' in argument passing

问题描述

我有文档记录用户名，IP和密码必须为const char*，并且在将变量放入const char时收到此错误消息.

I have documentation where written that username, IP and password must be const char* and when I'm putting varaibles in const char, I'm getting this error message.

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");          
        }          
    }
}

我得到了这个错误:

无法在传递参数时转换const char*' to WCHAR *'

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

这些参数必须使用哪种变量?如何使用?

Which kind of variable must I use for those arguments and how?

推荐答案

您最有可能使用Visual Studio编译器之一，在Project Settings中有一个Character set选择.选择:

You are most likely using one of the Visual Studio compilers, where in Project Settings, there is a Character set choice. Choose from:

• Unicode字符集(UTF-16)，默认
• 多字节字符集(UTF-8)
• 未设置

调用接受Unicode设置中的字符串的函数需要您输入Unicode字符串文字:

Calling functions that accept strings in the Unicode setting requires you to make Unicode string literals:

"hello"

类型为const char*，而:

L"hello"

的类型为const wchar_t*.因此，要么将配置更改为Not set，要么将字符串文字更改为宽字符串.

is of type const wchar_t*. So either change your configuration to Not set or change your string literals to wide ones.

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