我应该通过哪种方式将指向缓冲区的指针转换为字符串

Question

所以我使用CallNamedPipe函数从管道中获取一些数据，这些数据被放入response_buffer中。然而，我发现的所有将response_buffer转换为字符串的方法都不起作用。

我尝试过直接将其转换为字符串，但没有成功，还有其他方法

这里有问题的代码是

std::string word;
string responses;
DWORD response_length = 0xffffffff;
msg = ""gettrackerpose " + std::to_string(i) + " " + std::to_string(-frameTime - parameters->camLatency)";
auto msg_cstr = reinterpret_cast<LPVOID>(const_cast<char *>(msg.c_str()));
int tracker_pose_valid;
constexpr int BUFFER_SIZE = 512;
char *response_buffer[BUFFER_SIZE];

int success = CallNamedPipeA(
"\.\pipe\ApriltagPipeIn", // pipe name
msg_cstr,                      // message
msg.size(),                    // message size
response_buffer,               // response
BUFFER_SIZE,                   // response max size
&response_length,              // response size
2 * 1000                       // timeout in ms
);
//The problem I am having is right here, with trying to convert the buffer to a string
std::string str(response_buffer, response_buffer + BUFFER_SIZE);

std::istringstream ret(str);

Answer 1

与其尝试将其转换为字符串，不如从一开始就将其转换成字符串。

std::string response_buffer{};
response_buffer.resize(BUFFER_SIZE);
int success = CallNamedPipeA(
"\.\pipe\ApriltagPipeIn", // pipe name
msg_cstr,                      // message
msg.size(),                    // message size
response_buffer.data(),         // response
BUFFER_SIZE,                   // response max size
&response_length,              // response size
2 * 1000                       // timeout in ms
);
response_buffer.resize(response_length);