The document describes adding functionality to a CFigureView class. It involves: 1) Declaring a member variable m_color of type COLORREF to store the color. 2) Initializing m_color to blue (RGB(0,0,255)) in the constructor. 3) Overriding OnLButtonDown to draw a rectangle using m_color when the left mouse button is clicked. 4) Overriding OnRButtonDown to open a color dialog when the right mouse button is clicked and update m_color with the selected color.

1. Figure

5. Add the following member variable
…………………………………
DECLARE_MESSAGE_MAP()
public:
COLORREF m_color;
};
Var name Var type Class Access
m_color COLORREF CFigureView public

6. Initialize m_color var in constructor:
CFigureView::CFigureView() noexcept
{
// TODO: add construction code here
m_color = RGB(0, 0, 255);
}

10. void CFigureView::OnLButtonDown(UINT nFlags, CPoint
point)
{
// TODO: Add your message handler code here and/or call default
RedrawWindow();
CClientDC dc(this);
CPen pen(PS_SOLID, 2, RGB(100, 100, 100));
dc.SelectObject(&pen);
CBrush penson(m_color);
dc.SelectObject(&penson);
dc.Rectangle(10, 10, 300, 300);
CView::OnLButtonDown(nFlags, point);
}

14. void CFigureView::OnRButtonDown(UINT nFlags, CPoint point)
{
// TODO: Add your message handler code here and/or call default
CColorDialog dlg;
dlg.DoModal();
m_color = dlg.GetColor();
OnLButtonDown(nFlags, point);
CView::OnRButtonDown(nFlags, point);
}