[MFC] Menu(2)

“Picture” 프로그램 수정
1. Doc에 enum 형의 멤버변수 m_Type 추가
 초기치 - 가운데 보기
2. Menu 추가
화면 설정 - 가운데 보기/전체 보기/타일 보기
3. 각 menu 항목에 command handler 추가

4. 타일 보기 구현
OnDraw 수정 
for(int y=0; y <= rect.bottom; y += bm.bmHeight)
   for(int x=0; x <= rect.right; x += bm.bmWidth)
pDC->BitBlt(x,y,bm.bmWidth,bm.bmHeight,&memDC,
                      0,0,SRCCOPY);
5. 전체보기 구현  
OnDraw 수정
pDC->StretchBlt(0,0,rect.right,rect.bottom,&memDC,
             0,0,bm.bmWidth,bm.bmHeight,SRCCOPY);

class CPictureDoc : public CDocument
{
   ……
 public:
        enum type{CENTER,TILE,FULL};
  type m_Type;
};

void CPictureDoc::OnScreenCenter()
{
 if(m_Type != CENTER)
 {
    m_Type=CENTER;
         UpdateAllViews(NULL); 
     }
}

void CPictureDoc::OnScreenFull()
{
 if(m_Type != FULL)
 {
  m_Type=FULL;
       UpdateAllViews(NULL); 
      }
}

void CPictureDoc::OnScreenTile()
{
 if(m_Type != TILE)
 {
  m_Type=TILE;
       UpdateAllViews(NULL); 
     }
}

void CPictureView::OnDraw(CDC* pDC)
{
  CPictureDoc* pDoc = GetDocument();
  ASSERT_VALID(pDoc);
 
       // TODO: add draw code for native data here
       CDC  memDC;   
       CBitmap MyBit,*pOldBit;
  BITMAP  bm;
  MyBit.LoadBitmap(IDB_TOTO);
       MyBit.GetObject(sizeof(BITMAP),&bm);
       memDC.CreateCompatibleDC(pDC);
  pOldBit=memDC.SelectObject(&MyBit);
      CRect rect;
       GetClientRect(rect);

switch(pDoc->m_Type)
   {
        case CPictureDoc::CENTER : 
     {   int x=(rect.right-bm.bmWidth)/2;
             int y=(rect.bottom-bm.bmHeight)/2;
             pDC->BitBlt(x,y,bm.bmWidth,bm.bmHeight,&memDC,0,0,SRCCOPY);
         }
                 break;

case CPictureDoc::TILE : 
         {
    for(int y=0; y <= rect.bottom; y += bm.bmHeight)
       for(int x=0; x <= rect.right; x += bm.bmWidth)
          pDC->BitBlt(x,y,bm.bmWidth,bm.bmHeight,&memDC,0,0,SRCCOPY);
          }
   break;

case CPictureDoc::FULL :
      pDC->StretchBlt(0,0,rect.right,rect.bottom,&memDC,0,0,
                              bm.bmWidth,bm.bmHeight,SRCCOPY);
             break;     
     }
memDC.SelectObject(pOldBit);
}