偶要用Crect在窗口中央显示图象，各位老大帮偶看看这些coding怎么改啊？

Question

CRect rcDIB;
        GetClientRect(&rcDIB);
        pDC->SetMapMode(MM_ANISOTROPIC);
        //使坐标的原点位于窗口的中心
        pDC->SetViewportOrg(rcDIB.right/2,rcDIB.bottom/2);
        pDC->SetViewportExt(rcDIB.right,rcDIB.bottom);
        pDC->SetWindowOrg(0,0);
        pDC->SetWindowExt(3000,-3000);
       
        //获取DIB宽度
int CXDIB=(int)::DIBWidth(LpDIB);
//获取DIB高度度
int CYDIB=(int)::DIBHeight(LpDIB);
        //编码使DIB在RECT中居中显示！
        rcDIB.top=CXDIB/2;
        rcDIB.left=-CYDIB/2;
        rcDIB.right=CYDIB/2;
        rcDIB.bottom=-CXDIB/2;
        //这一句应该怎么写，偶不会
        rcDIB.CenterPoint=(0,0);

Answer 1

1,在头文件中定义:
CBitmap* m_pBitmap;//位图
BITMAP m_bmpInfo; //位图信息（大小等）  2,在afx_msg BOOL OnEraseBkgnd(CDC* pDC)中:    //获得客户区大小
CRect rc;
GetClientRect(&rc);
CClientDC dc(this);
OnPrepareDC(&dc);
dc.LPtoDP(&rc);
CDC dcMem;
HBITMAP hbit;
dcMem.CreateCompatibleDC(&dc);
hbit = (HBITMAP)dcMem.SelectObject(m_pBitmap);
//获得位图信息
m_pBitmap->GetObject(sizeof(BITMAP),&m_bmpInfo); //把整个位图在客户区中心显示
GetDC()->StretchBlt(rc.left+10,rc.top+10,rc.right-rc.left-20,rc.bottom-rc.top-20,&dcMem,0,0,m_bmpInfo.bmWidth,m_bmpInfo.bmHeight,SRCCOPY);
DeleteDC(dcMem);

Answer 2

你需要进行相应的更改,我是bitmap,而你是dib.