diff --git a/src/core/WindowManager.cpp b/src/core/WindowManager.cpp
index c665543..bbf2db9 100644
--- a/src/core/WindowManager.cpp
+++ b/src/core/WindowManager.cpp
@@ -34,6 +34,7 @@ bool WindowManager::Initialize(GameConfig& config) {
                  "创建渲染器失败: %s", SDL_GetError());
                  return false;
     }
+    // 关键设置：启用像素模式
     
     // 设置逻辑呈现模式，实现分辨率自适应[3](@ref)
     SDL_SetRenderLogicalPresentation(m_renderer,
@@ -66,4 +67,14 @@ SDL_Renderer* WindowManager::GetRenderer() {
 
 SDL_Window* WindowManager::GetWindow() {
     return m_window;
+}
+
+bool WindowManager::setFullscreen(bool isFullscreen) {
+    if (isFullscreen == m_isFullscreen) {
+        return true; // 状态未改变，直接返回
+    }
+    SDL_SetWindowFullscreen(m_window, isFullscreen);
+    m_isFullscreen = isFullscreen;
+    
+    return true;
 }
\ No newline at end of file
diff --git a/src/core/WindowManager.h b/src/core/WindowManager.h
index 3323395..01ec2bb 100644
--- a/src/core/WindowManager.h
+++ b/src/core/WindowManager.h
@@ -14,7 +14,7 @@ public:
     void Clear();
     //呈现窗口
     void Present();
-
+    bool setFullscreen(bool isFullscreen);
     
     SDL_Renderer* GetRenderer();
     SDL_Window* GetWindow();
@@ -25,5 +25,5 @@ private:
     SDL_Renderer* m_renderer;
     int m_width;
     int m_height;
-
+    bool m_isFullscreen = false;
 };
\ No newline at end of file
diff --git a/src/input/InputManager.cpp b/src/input/InputManager.cpp
index 5b197de..98e3f33 100644
--- a/src/input/InputManager.cpp
+++ b/src/input/InputManager.cpp
@@ -24,6 +24,11 @@ SDL_AppResult InputManager::handleInputEvent(const SDL_Event* event) {
             m_currentInputState.mouseCurrentPosition = {static_cast<float>(event->motion.x), 
                                                         static_cast<float>(event->motion.y)};
             break;
+        case SDL_EVENT_KEY_DOWN:
+            if (event->key.key == SDLK_F11) {
+                m_currentInputState.isFullscreen = !m_currentInputState.isFullscreen;
+            }
+            break;
     }
     return SDL_APP_CONTINUE;
 }
diff --git a/src/input/InputState.h b/src/input/InputState.h
index 84007ff..8c33d7f 100644
--- a/src/input/InputState.h
+++ b/src/input/InputState.h
@@ -5,4 +5,5 @@ struct InputState
     std::pair<float, float> mouseCilckOn;
     bool leftMouseDown = false;
     std::pair<float, float> mouseCurrentPosition;
+    bool isFullscreen = false;
 };