英文:
E0167 argument of type "const char *" is incompatible with parameter of type "LPCWSTR"
问题
Expecting No Error for this line // CreateFile(port.c_str()
E0167 argument of type "const char *" is incompatible with parameter of type "LPCWSTR"
英文:
#include <Windows.h>
#include <iostream>
#include <vector>
#include <string>
std::vector<std::string> serialCOM::list_serial_ports()
{
std::vector<std::string> ports;
// Enumerate all available COM ports
for (int i = 1; i <= 256; i++) {
std::string port = "COM" + std::to_string(i);
HANDLE hComm = CreateFile(port.c_str(), GENERIC_READ | GENERIC_WRITE, 0, NULL, OPEN_EXISTING, 0, NULL);
}
return ports;
}
Expecting No Error for this line // CreateFile(port.c_str()
E0167 argument of type "const char *" is incompatible with parameter of type "LPCWSTR"
答案1
得分: 1
您正在使用 CreateFileW，它需要一个 const wchar_t*（这就是 LPCWSTR 的 typedef）。port.c_str() 返回一个 const char*，这些指针不兼容。
要么改用 CreateFileA（它需要一个 const char* / LPCSTR），要么将 port 改为 std::wstring 并继续使用 CreateFileW：
std::wstring port = L"COM" + std::to_wstring(i);
HANDLE hComm = CreateFileW(port.c_str(), ...
英文:
You are using CreateFileW which expects a const wchar_t* (which is what LPCWSTR is a typedef for). port.c_str() returns a const char* and these pointers are not compatible.
Either use CreateFileA instead (which expects a const char* / LPCSTR) or make port a std::wstring and continue to use CreateFileW:
std::wstring port = L"COM" + std::to_wstring(i);
HANDLE hComm = CreateFileW(port.c_str(), ...
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