display MessageBox in win32 on fatal errors

src/framework/platform/platform.h

@@ -82,6 +82,8 @@ public:
     /// Get the app user directory, the place to save files configurations files
     std::string getAppUserDir();
 
+    void displayFatalError(const std::string& message);
+
 private:
     int m_lastTicks;
 };

src/framework/platform/win32platform.cpp

@@ -289,7 +289,7 @@ void Platform::init(PlatformListener* platformListener, const char *appName)
     wc.lpszClassName            = win32.appName.c_str();                        // Set The Class Name
 
     if(!RegisterClassA(&wc))
-        logFatal("FATAL ERROR: Failed to register the window class.");
+        logFatal("Failed to register the window class.");
 
     // force first tick
     updateTicks();
@@ -737,3 +737,9 @@ LRESULT CALLBACK WndProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
     }
     return 0;
 }
+
+void Platform::displayFatalError(const std::string& message)
+{
+    MessageBoxA(NULL, message.c_str(), "Fatal Error", MB_OK | MB_ICONERROR);
+}
+

src/framework/platform/x11platform.cpp

@@ -962,3 +962,8 @@ std::string Platform::getAppUserDir()
         logError("Couldn't create directory for saving configuration file. (",sdir.str(),")");
     return sdir.str();
 }
+
+void Platform::displayFatalError(const std::string& message)
+{
+    // nothing to do
+}