Fix compilation in Linux

Source/Engine/Platform/SDL/SDLInput.cpp

@@ -4,11 +4,12 @@
 
 #include "SDLInput.h"
 #include "SDLWindow.h"
+#include "Engine/Core/Collections/Dictionary.h"
+#include "Engine/Core/Log.h"
 #include "Engine/Input/Input.h"
 #include "Engine/Input/Mouse.h"
 #include "Engine/Input/Keyboard.h"
 #include "Engine/Input/Gamepad.h"
-#include "Engine/Core/Collections/Dictionary.h"
 
 #include <SDL3/SDL_events.h>
 

Source/Engine/Platform/SDL/SDLWindow.cpp

@@ -226,9 +226,9 @@ void* GetNativeWindowPointer(SDL_Window* window)
 #if PLATFORM_WINDOWS
     windowPtr = SDL_GetPointerProperty(props, SDL_PROP_WINDOW_WIN32_HWND_POINTER, nullptr);
 #elif PLATFORM_LINUX
-    windowPtr = GetWaylandSurfacePtr();
+    windowPtr = SDL_GetPointerProperty(SDL_GetWindowProperties(window), SDL_PROP_WINDOW_WAYLAND_SURFACE_POINTER, nullptr);
     if (windowPtr == nullptr)
-        windowPtr = (void*)GetX11WindowHandle();
+        windowPtr = (void*)SDL_GetNumberProperty(SDL_GetWindowProperties(window), SDL_PROP_WINDOW_X11_WINDOW_NUMBER, 0);
 #elif PLATFORM_MAC
     windowPtr = SDL_GetPointerProperty(props, SDL_PROP_WINDOW_COCOA_WINDOW_POINTER, nullptr);
 #elif PLATFORM_ANDROID

Source/Engine/Platform/SDL/SDLWindow.h

@@ -8,6 +8,9 @@
 
 struct SDL_Window;
 union SDL_Event;
+#if PLATFORM_LINUX
+class MessageBox;
+#endif
 
 /// <summary>
 /// Implementation of the window class for SDL platform
@@ -20,7 +23,7 @@ class FLAXENGINE_API SDLWindow : public WindowBase
     friend SDLPlatform;
 #if PLATFORM_LINUX
     friend LinuxPlatform;
-    friend class LinuxWindow;
+    friend MessageBox;
 #endif
     
 private: