没有重载 function “strstr”实例与参数列表匹配

Question

E0304   no instance of overloaded function "strstr" matches the argument list

I'm getting this error when try to compile, how can i fix this? post the code cus it's better to understand then photo. So this is the error that i'm getting i don't have any idea what is causing this and how to fix.

int MakeWindows();
int CloseWindows();

int WINAPI WinMain(_In_HINSTANCE hInstance, _In_opt_ HINSTANCE hPrevInstance, _In_ LPSTR lpCmdLine, _In_ int nCmdShow)
{

   HW_PROFILE_INFO hwProfileInfo;
   const char* cHWID = "{1234-5678-9669-1337}"; //


   if (GetCurrentHwProfile(&hwProfileInfo) != NULL) }
        printf("Hardware ID: %s\n", hwProfileInfo.szHwProfileGuid);

        if (strstr(hwProfileInfo.szHwProfileGuid, cHWID)) {
           printf("Your hardware ID was successful\n\n");
           Sleep(3069);
           system("CLS");

        }
        else {
             printf("Your Hardware ID was denied;\n");
             Sleep(1000);
             TerminateProcess(GetCurrentProcess(), NULL);
        }
    }
    else {
         return 0;
    }
};

Answer 1

strstr wants a char* as its first arg. szHwProfileGuid is going to be a wide string. You need wccstr

So try:

const wcchar* cHWID = L"{1234-5678-9669-1337}";

Answer 2

The problem stems from your project being compiled as Unicode ('wide' characters, usually wchar_t types or defined in Windows as WCHAR ), and you also using single-byte characters ( char or CHAR ), for example in your call to strstr () .

(As you're seeing here, the two don't cooperate nicely!)

The Windows API defines two versions of many of its structures (and therefore the respective functions that use them), one to accommodate each character type. In your code example, HW_PROFILE_INFO is actually defined as HW_PROFILE_INFOW for the wide-character version of the API, and you're invoking GetCurrentHwProfileW (). This is fine and by design, since your build is instrumented as a Unicode build.

There are a few ways you could fix this; here's a simple method (your original code with two slight modifications):

int MakeWindows();
int CloseWindows();

int WINAPI WinMain(_In_ HINSTANCE hInstance, _In_opt_ HINSTANCE hPrevInstance, _In_ LPSTR lpCmdLine, _In_ int nCmdShow)
{

   HW_PROFILE_INFOA hwProfileInfo;  // <== Change # 1
   const char* cHWID = "{1234-5678-9669-1337}"; //


   if (GetCurrentHwProfileA(&hwProfileInfo) != NULL) }  // <== Change # 2
        printf("Hardware ID: %s\n", hwProfileInfo.szHwProfileGuid);

        if (strstr(hwProfileInfo.szHwProfileGuid, cHWID)) {
           printf("Your hardware ID was successful\n\n");
           Sleep(3069);
           system("CLS");

        }
        else {
             printf("Your Hardware ID was denied;\n");
             Sleep(1000);
             TerminateProcess(GetCurrentProcess(), NULL);
        }
    }
    else {
         return 0;
    }
};

This set of simple changes has you explicitly using the single-byte versions of the WINAPI functions, keeping your call to strstr () consistent for its two arguments.

(I'll mention again that this is only one way to fix this problem, and the "best" solution may be subjective. :))