Sdl2Application: also lock cursor to window when locking mouse.

src/Platform/Sdl2Application.cpp

@@ -135,6 +135,11 @@ int Sdl2Application::exec() {
     return 0;
 }
 
+void Sdl2Application::setMouseLocked(bool enabled) {
+    SDL_SetWindowGrab(window, enabled ? SDL_TRUE : SDL_FALSE);
+    SDL_SetRelativeMouseMode(enabled ? SDL_TRUE : SDL_FALSE);
+}
+
 Sdl2Application::InputEvent::Modifiers Sdl2Application::MouseEvent::modifiers() {
     if(modifiersLoaded) return _modifiers;
     modifiersLoaded = true;

src/Platform/Sdl2Application.h

@@ -135,9 +135,7 @@ class Sdl2Application {
          * MouseMoveEvent::relativePosition() is changing, absolute position
          * stays the same.
          */
-        inline void setMouseLocked(bool enabled) {
-            SDL_SetRelativeMouseMode(enabled ? SDL_TRUE : SDL_FALSE);
-        }
+        void setMouseLocked(bool enabled);
 
     protected:
         /**