自毁程序

void SelfDestroy()
{
    // temporary .bat file
    static const WCHAR tempbatname[] = L"_uninsep.bat";
    CString csCmd;    //bat contents
    std::string szCmd;

    static WCHAR templ[] =
        L":Repeat
"
        L"del "%s"
"
        L"if exist "%s" goto Repeat
"
        L"rmdir "%s"
"
        L"del "%s"";
    
    WCHAR modulename[_MAX_PATH];    // absolute path of calling .exe file
    WCHAR temppath[_MAX_PATH];      // absolute path of temporary .bat file
    WCHAR folder[_MAX_PATH];
    // absolute path of temporary .bat file
    GetTempPath(_MAX_PATH, temppath);
    wcscat_s(temppath, tempbatname);
    // absolute path of calling .exe file
    GetModuleFileName(NULL, modulename, MAX_PATH);
    wcscpy_s(folder, modulename);
    
    PWCHAR pb = wcsrchr(folder, '\');
    if (pb != NULL)
        *pb = 0;

    HANDLE hf;

    hf = CreateFile(temppath, GENERIC_WRITE, 0, NULL,
        CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
    //Long，如执行成功，则返回文件句柄。INVALID_HANDLE_VALUE表示出错，会设置GetLastError。即使函数成功，但若文件存在，且指定了CREATE_ALWAYS 或 OPEN_ALWAYS，GetLastError也会设为ERROR_ALREADY_EXISTS
    if (hf != INVALID_HANDLE_VALUE)
    {
        csCmd.Format(templ, modulename, modulename, folder, temppath);
        CStringToString(csCmd, szCmd);
        DWORD len;
        PWCHAR bat;
        //缓存大小最大1024
        WriteFile(hf, szCmd.c_str(), szCmd.size(), &len, NULL);
        CloseHandle(hf);
        ShellExecuteW(NULL, L"open", temppath, NULL, NULL, SW_HIDE);
    }
}