Added an error message if a level fails to load.

DataModelInstance.cpp

@@ -5,6 +5,7 @@
 #include <iostream>
 #include <sstream>
 #include <commdlg.h>
+#include "ErrorFunctions.h"
 
 using namespace std;
 using namespace rapidxml;
@@ -410,6 +411,12 @@ bool DataModelInstance::load(const char* filename, bool clearObjects)
 		name = tname;
 		return true;
 	}
+	else
+	{
+		std::stringstream msg;
+		msg << "Failed to load file:" << std::endl << filename << std::endl << strerror(errno);
+		MessageBoxStr(msg.str());
+	}
 }
 
 bool DataModelInstance::readXMLFileStream(std::ifstream* file)

ErrorFunctions.cpp

@@ -1,6 +1,8 @@
+#include <sstream>
 #include "ErrorFunctions.h"
 #include "Globals.h"
 
+
 void OnError(int err, std::string msg)
 {
 	//g_usableApp->window()->setInputCaptureCount(0);
@@ -10,4 +12,18 @@ void OnError(int err, std::string msg)
 	//clearInstances();
 	MessageBox(NULL, emsg.c_str(), title.c_str(), MB_OK);
 	exit(err);
+}
+
+
+void MessageBoxStr(std::string msg)
+{
+	std::string title = g_PlaceholderName;
+	MessageBox(NULL, msg.c_str(), title.c_str(), MB_OK);
+}
+
+void MessageBoxStream(std::stringstream msg)
+{
+	std::string strMsg = msg.str();
+	std::string title = g_PlaceholderName;
+	MessageBox(NULL, strMsg.c_str(), title.c_str(), MB_OK);
 }

ErrorFunctions.h

@@ -1,4 +1,6 @@
 #pragma once
 #include <string>
 
-void OnError(int err, std::string msg = "");
+void OnError(int err, std::string msg = "");
+void MessageBoxStr(std::string msg);
+void MessageBoxStream(std::stringstream msg);