Hey - 我在这里给出了一些整体性的反馈：

• 在析构函数中，你移除了 s_active_instance_.compare_exchange_strong(this, nullptr) 调用，但 activate_mouse_lock_follow 仍然会设置 s_active_instance_ = this；建议在销毁或停用时恢复相应的清理逻辑，以避免将悬空指针暴露给其他线程。
• 你将 mouse_lock_follow_active_ 改成了 std::atomic<bool>，但跟踪线程使用的其他状态（例如 lock_anchor_cursor_、lock_offset_x_、lock_offset_y_、lock_anchor_window_）仍然是非原子的；请再次检查读/写模式，以确保在 mouse_lock_follow_active_ 现在可能更明显地允许并发线程访问的情况下，不会产生数据竞争。
• 在 ensure_process_dpi_awareness_once 中，之前的实现会在 SetProcessDpiAwareness 返回 E_ACCESSDENIED 后停止，而新版本忽略了 HRESULT 并始终返回 0；请确认这是有意删除对 E_ACCESSDENIED 的特殊处理，并在该情况下不再提前返回。

Please address the comments from this code review:

## Overall Comments
- In the destructor you removed the `s_active_instance_.compare_exchange_strong(this, nullptr)` call, but `activate_mouse_lock_follow` still sets `s_active_instance_ = this`; consider restoring a corresponding clear on destruction or deactivation to avoid leaving a dangling pointer visible to other threads.
- You changed `mouse_lock_follow_active_` to `std::atomic<bool>` but other state used by the tracking thread (e.g. `lock_anchor_cursor_`, `lock_offset_x_`, `lock_offset_y_`, `lock_anchor_window_`) remains non-atomic; double-check the read/write pattern to ensure there is no data race now that `mouse_lock_follow_active_` may allow concurrent thread access more visibly.
- In `ensure_process_dpi_awareness_once`, the previous implementation stopped after `SetProcessDpiAwareness` returned `E_ACCESSDENIED`, whereas the new version ignores the HRESULT and always returns 0; confirm that it is intentional to drop the special handling of `E_ACCESSDENIED` and not early-out in that case.

Please address the comments from this code review:

## Overall Comments
- In the destructor you removed the `s_active_instance_.compare_exchange_strong(this, nullptr)` call, but `activate_mouse_lock_follow` still sets `s_active_instance_ = this`; consider restoring a corresponding clear on destruction or deactivation to avoid leaving a dangling pointer visible to other threads.
- You changed `mouse_lock_follow_active_` to `std::atomic<bool>` but other state used by the tracking thread (e.g. `lock_anchor_cursor_`, `lock_offset_x_`, `lock_offset_y_`, `lock_anchor_window_`) remains non-atomic; double-check the read/write pattern to ensure there is no data race now that `mouse_lock_follow_active_` may allow concurrent thread access more visibly.
- In `ensure_process_dpi_awareness_once`, the previous implementation stopped after `SetProcessDpiAwareness` returned `E_ACCESSDENIED`, whereas the new version ignores the HRESULT and always returns 0; confirm that it is intentional to drop the special handling of `E_ACCESSDENIED` and not early-out in that case.

Pull request overview

Refactors parts of MaaFramework’s Win32 message-based input implementation (notably mouse-lock-follow) and tidies the C++ module export surface to better match the public API.

Changes:

• Refactors Win32 MessageInput mouse-lock-follow internals (extracts window-centering helper, improves state thread-safety via atomics, minor flow cleanups).
• Simplifies DLL/function resolution logic for DPI-awareness initialization and ntdll suspend/resume calls.
• Removes MaaControllerPostMouseLockFollow from the module export list.

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 2 comments.