Call this function to set the size of the control bar's borders.
void SetBorders(
   int cxLeft = 0,
   int cyTop = 0,
   int cxRight = 0,
   int cyBottom = 0 
);
void SetBorders(
   LPCRECT lpRect 
);
Parameters
- cxLeft 
 The width (in pixels) of the control bar's left border.
- cyTop 
 The height (in pixels) of the control bar's top border.
- cxRight 
 The width (in pixels) of the control bar's right border.
- cyBottom 
 The height (in pixels) of the control bar's bottom border.
- lpRect 
 A pointer to a CRect object that contains the current width (in pixels)of each border of the control bar object.
Example
The following code example sets the top and bottom borders of the control bar to 5 pixels, and the left and right borders to 2 pixels:
CControlBar& m_myControlBar    = m_Rebar;
m_myControlBar.SetBorders(2, 5, 2, 5);
Requirements
Header: afxext.h