代码实现：

void CCGDrawingView::Rectangle(int x1, int y1, int x2, int y2, int x3, int y3, int x4, int y4, COLORREF color,
	CDC* pDC) {
	CPen redPen(PS_SOLID, 1, color);
	CBrush redBursh(color);
	CPen* pOldPen = pDC->SelectObject(&redPen);
	CBrush* pOLdBrush = pDC->SelectObject(&redBursh);
	pDC->MoveTo(x1, y1);
	pDC->LineTo(x2, y2);
	pDC->LineTo(x3, y3);
	pDC->LineTo(x4, y4);
	pDC->LineTo(x1, y1);

}

结果展示：