画矩形时的错误

Question

在CShiyanView.h中声明如下：
----------------------------------------------
enum ShpType
{shpRectangle,
shpEllipse};
struct Shape
{CRect m_boxShape;
ShpType m_typeShape;
bool m_bTransparent;
};
------------------------------------------------
在CShiyanView.cpp中
 void CShiyanView::OnDraw(CDC* pDC)
 {
CShiyanDoc* pDoc = GetDocument();
ASSERT_VALID(pDoc); for(int nShp=0;nShp<m_countShapes;nShp++)
{
ASSERT(m_arShps[nShp].m_typeShape==shpRectangle||
m_arShps[nShp].m_typeShape==shpEllipse);
         SetPenBrush(pDC,m_arShps[nShp].m_bTransparent);
**6** switch(m_typeShape)
{
**7**  case shpRectangle:pDC->Rectangle(m_boxShape);
break;                                   
 case shpEllipse:pDC->Ellipse(m_boxShape);
break;
      
   default: ;
 }
ResetPenBrush(pDC);
}
 
}
--------------------------------------------------------------------
在**6**和**7**处报错：  m_typeShape:没有声明，和m_boxShape没有声明；

Answer 1

m_typeShape   ->    m_arShps[ShpType]

Answer 2

switch(m_arShps[nShp].m_typeShape)
{
**7**  case 'shpRectangle':pDC->Rectangle(m_boxShape);
break;                                   
 case 'shpEllipse':pDC->Ellipse(m_boxShape);
break;
      
   default: ;

Answer 3

在CShiyanView.h中声明如下：
----------------------------------------------
enum ShpType
{shpRectangle,
shpEllipse};
struct Shape
{CRect m_boxShape;
ShpType m_typeShape;
bool m_bTransparent;
};------------------------------------------------
在CShiyanView.cpp中
 void CShiyanView::OnDraw(CDC* pDC)
 {
CShiyanDoc* pDoc = GetDocument();
ASSERT_VALID(pDoc); for(int nShp=0;nShp<m_countShapes;nShp++)
{
ASSERT(m_arShps[nShp].m_typeShape==shpRectangle||
m_arShps[nShp].m_typeShape==shpEllipse);
         SetPenBrush(pDC,m_arShps[nShp].m_bTransparent);
switch(m_arShps[nShp].m_typeShape)
{
 case shpRectangle:pDC->Rectangle(m_arShps[nShp].m_boxShape);
break;                                   
 case shpEllipse:pDC->Ellipse(m_arShps[nShp].m_boxShape);
break;
      
   default: ;
 }
ResetPenBrush(pDC);
}
 
}

Answer 4

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