C ++中的类型错误参数

问题描述

我正在使用Visual Studio2013.错误显示类型为"WCHAR *"的参数与类型为"const char *"的参数不兼容.

I am using Visual Studio 2013. The error says "argument of type "WCHAR *" is incompatible with parameter of type "const char *".

while (!processId)
{
    system("CLS");
    cout << "Searching for game" << ProcessName << "..." << endl;
    cout << "Make sure your game is running" << endl;
    hProcSnap = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0);

    if (Process32First(hProcSnap, &pe32))
    {
        do
        {
            if (!strcmp(pe32.szExeFile, ProcessName))
            {
                processId = pe32.th32ProcessID;
                break;
            }
        } while (Process32Next(hProcSnap, &pe32));
    }
    Sleep(1000);
}

错误在下一行.我的想法是在"pe32"上

The error is on the following line. On my ide it is on "pe32"

          if (!strcmp(pe32.szExeFile, ProcessName))

推荐答案

strcmp 的签名是

int strcmp ( const char * str1, const char * str2 );

pe32.szExeFile 是 TCHAR [] ，可以是 wchar_t [] 或 char [] >，取决于是否定义了 UNICODE .在您的情况下，它已定义，因此您需要:

Whereas pe32.szExeFile is a TCHAR[], which is either wchar_t[] or char[] depending on whether UNICODE is defined. In your case, it is defined, so you need to either:

1. 将 ProcessName 更改为宽字符串，然后使用 wcscmp 进行比较.

1. change ProcessName to a wide character string and use wcscmp to compare them.

使用 _tcscmp()，并根据 UNICODE 确保 ProcessName 是宽还是窄.

use _tcscmp(), and make sure ProcessName is wide or narrow based on UNICODE.

使用API​​的ANSI版本，其名称后附加大写的 A (例如， Process32FirstA()和 Process32NextA()).

use the ANSI versions of the APIs, which have a capital A appended to their names (e.g., Process32FirstA() and Process32NextA()).

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