diff --git a/fpdfsdk/cpdfsdk_annot.h b/fpdfsdk/cpdfsdk_annot.h
index c0e4c5b..17a68b4 100644
--- a/fpdfsdk/cpdfsdk_annot.h
+++ b/fpdfsdk/cpdfsdk_annot.h
@@ -43,6 +43,11 @@
                                const CFX_PointF& point) = 0;
     virtual bool OnRButtonUp(Mask<FWL_EVENTFLAG> nFlags,
                              const CFX_PointF& point) = 0;
+    virtual bool OnChar(uint32_t nChar, Mask<FWL_EVENTFLAG> nFlags) = 0;
+    virtual bool OnKeyDown(FWL_VKEYCODE nKeyCode,
+                           Mask<FWL_EVENTFLAG> nFlags) = 0;
+    virtual bool OnSetFocus(Mask<FWL_EVENTFLAG> nFlags) = 0;
+    virtual bool OnKillFocus(Mask<FWL_EVENTFLAG> nFlags) = 0;
   };
 
   virtual ~CPDFSDK_Annot();
@@ -58,6 +63,9 @@
   virtual CPDF_Annot* GetPDFAnnot() const;
   virtual CPDF_Annot::Subtype GetAnnotSubtype() const = 0;
   virtual CFX_FloatRect GetRect() const = 0;
+  virtual void OnDraw(CFX_RenderDevice* pDevice,
+                      const CFX_Matrix& mtUser2Device,
+                      bool bDrawAnnots) = 0;
   virtual bool DoHitTest(const CFX_PointF& point) = 0;
   virtual CFX_FloatRect GetViewBBox() = 0;
   virtual bool CanUndo() = 0;
@@ -93,6 +101,16 @@
   static bool OnRButtonUp(ObservedPtr<CPDFSDK_Annot>& pAnnot,
                           Mask<FWL_EVENTFLAG> nFlags,
                           const CFX_PointF& point);
+  static bool OnChar(ObservedPtr<CPDFSDK_Annot>& pAnnot,
+                     uint32_t nChar,
+                     Mask<FWL_EVENTFLAG> nFlags);
+  static bool OnKeyDown(ObservedPtr<CPDFSDK_Annot>& pAnnot,
+                        FWL_VKEYCODE nKeyCode,
+                        Mask<FWL_EVENTFLAG> nFlags);
+  static bool OnSetFocus(ObservedPtr<CPDFSDK_Annot>& pAnnot,
+                         Mask<FWL_EVENTFLAG> nFlags);
+  static bool OnKillFocus(ObservedPtr<CPDFSDK_Annot>& pAnnot,
+                          Mask<FWL_EVENTFLAG> nFlags);
 
   // Three cases: PDF page only, XFA page only, or XFA page backed by PDF page.
   IPDF_Page* GetPage();     // Returns XFA Page if possible, else PDF page.