fix windows aero snap

CHANGELOG.md

@@ -18,6 +18,7 @@
     Bug #5120: Scripted object spawning updates physics system
     Bug #5207: Loose summons can be present in scene
     Bug #5379: Wandering NPCs falling through cantons
+    Bug #5394: Windows snapping no longer works
     Bug #5453: Magic effect VFX are offset for creatures
     Bug #5483: AutoCalc flag is not used to calculate spells cost
     Bug #5508: Engine binary links to Qt without using it

apps/openmw/engine.cpp

@@ -546,6 +546,10 @@ void OMW::Engine::createWindow(Settings::Manager& settings)
     if(fullscreen)
         flags |= SDL_WINDOW_FULLSCREEN;
 
+    // Allows for Windows snapping features to properly work in borderless window
+    SDL_SetHint("SDL_BORDERLESS_WINDOWED_STYLE", "1");
+    SDL_SetHint("SDL_BORDERLESS_RESIZABLE_STYLE", "1");
+
     if (!windowBorder)
         flags |= SDL_WINDOW_BORDERLESS;