Adde platform::windows::GetLastErrorToString()

Windows/VisualStudioDebugOutput.h

@@ -76,7 +76,7 @@ class vsBufferedStringStreamBuf : public std::streambuf
 class VisualStudioDebugOutput : public vsBufferedStringStreamBuf
 {
 public:
-    VisualStudioDebugOutput(bool send_to_output_window=true,
+	VisualStudioDebugOutput(bool send_to_output_window=true,
 							const char *logfilename=NULL,size_t bufsize=(size_t)16
 							,DebugOutputCallback c=NULL)
 		:vsBufferedStringStreamBuf((int)bufsize)
@@ -150,10 +150,10 @@ class VisualStudioDebugOutput : public vsBufferedStringStreamBuf
 			std::copy(str.begin(), str.end(), wstr.begin());
 			OutputDebugString(wstr.c_str());
 #else
-	        OutputDebugString(str.c_str());
+			OutputDebugString(str.c_str());
 #endif
 		}
-    }
+	}
 protected:
 	std::ofstream logFile;
 	bool to_output_window;

Windows/WindowsErrorHandling.h

@@ -0,0 +1,38 @@
+#pragma once
+
+#include <string>
+
+#if defined(_WIN32)
+#ifndef WIN32_LEAN_AND_MEAN
+#define WIN32_LEAN_AND_MEAN
+#endif
+#ifndef NOMINMAX
+#define NOMINMAX
+#endif
+#include <Windows.h>
+#endif
+
+
+namespace platform::windows
+{
+	std::string GetLastErrorToString(DWORD error)
+	{
+#if defined(_WIN32)
+		if (error != 0)
+		{
+			char *formatedMessage = nullptr;
+			DWORD formatedMessageSize = FormatMessageA(
+				FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS,
+				nullptr, error, 0, (char *)&formatedMessage, 0, nullptr);
+
+			if (formatedMessage != nullptr && formatedMessageSize > 0)
+			{
+				std::string result(formatedMessage, formatedMessageSize);
+				LocalFree(formatedMessage);
+				return result;
+			}
+		}
+#endif
+		return std::string();
+	}
+}