diff --git a/src/qt/qt_rendererstack.hpp b/src/qt/qt_rendererstack.hpp
index 9133a4927..eb3adf894 100644
--- a/src/qt/qt_rendererstack.hpp
+++ b/src/qt/qt_rendererstack.hpp
@@ -64,6 +64,11 @@ public:
             rendererWindow->onResize(width, height);
     }
 
+    void (*mouse_init)() = nullptr;
+    void (*mouse_poll)() = nullptr;
+    void (*mouse_capture)(QWindow *window) = nullptr;
+    void (*mouse_uncapture)() = nullptr;
+
 signals:
     void blitToRenderer(int buf_idx, int x, int y, int w, int h);
     void rendererChanged();