'Declaration

Public Property TextSelectionAutoScrollStep As System.Int32

public System.Int32 TextSelectionAutoScrollStep { get; set; }

public: __property System.Int32 get_TextSelectionAutoScrollStep();
public: __property void set_TextSelectionAutoScrollStep(
   System.Int32 value
);

public:
property System.Int32 TextSelectionAutoScrollStep {
   System.Int32 get();
   void set(System.Int32 value);
}

0 - image viewer will NOT be scrolled when text selection is performing in image viewer and mouse cursor is moving outside the image viewer;
N - image viewer will be scrolled by N pixels when text selection is performing in image viewer and mouse cursor is moving outside the image viewer.