diff --git a/fpdfsdk/cpdfsdk_widget.h b/fpdfsdk/cpdfsdk_widget.h
index c7dad0b..68fad87 100644
--- a/fpdfsdk/cpdfsdk_widget.h
+++ b/fpdfsdk/cpdfsdk_widget.h
@@ -134,7 +134,8 @@
   uint32_t GetAppearanceAge() const { return m_nAppearanceAge; }
   uint32_t GetValueAge() const { return m_nValueAge; }
 
-  bool IsWidgetAppearanceValid(CPDF_Annot::AppearanceMode mode);
+  bool IsWidgetAppearanceValid(CPDF_Annot::AppearanceMode mode) const;
+  bool IsPushHighlighted() const;
   CFX_Matrix GetMatrix() const;
   CFX_FloatRect GetClientRect() const;
   CFX_FloatRect GetRotatedRect() const;