| 42 | } |
| 43 | |
| 44 | std::string getWindowsError() |
| 45 | { |
| 46 | DWORD error = GetLastError(); |
| 47 | if (error == 0) |
| 48 | { |
| 49 | return ""; |
| 50 | } |
| 51 | |
| 52 | LPSTR buffer = nullptr; |
| 53 | DWORD size = FormatMessageA( |
| 54 | FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS, |
| 55 | nullptr, |
| 56 | error, |
| 57 | MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), |
| 58 | reinterpret_cast<LPSTR>(&buffer), |
| 59 | 0, |
| 60 | nullptr); |
| 61 | |
| 62 | std::string message; |
| 63 | if (size > 0 && buffer) |
| 64 | { |
| 65 | message = std::string(buffer, size); |
| 66 | while (!message.empty() && (message.back() == '\n' || message.back() == '\r')) |
| 67 | { |
| 68 | message.pop_back(); |
| 69 | } |
| 70 | LocalFree(buffer); |
| 71 | } |
| 72 | else |
| 73 | { |
| 74 | message = "Unknown error (code: " + std::to_string(error) + ")"; |
| 75 | } |
| 76 | |
| 77 | return message; |
| 78 | } |
| 79 | } // anonymous namespace |
| 80 | #endif |
| 81 | |