如下代码在CEdit编辑框内怎么显示不了位图啊,求高手帮帮忙!m_ctrlrx是CEdit类对象,和m_pBitmap一起是对话框类的成员变量
CDC* pDC=m_ctrlrx.GetDC();
m_pBitmap.LoadBitmap(IDB_BITMAP1);
BITMAP bm;
m_pBitmap.GetBitmap(&bm);
int nWidth=bm.bmWidth,nHeight=bm.bmHeight;
CDC MemDC;
MemDC.CreateCompatibleDC(pDC);
CBitmap* oldBmp = pDC-> SelectObject(&m_pBitmap);
pDC->SetStretchBltMode(HALFTONE);
int i=pDC-> BitBlt(0,0,nWidth-1,nHeight,&MemDC,0,0,SRCCOPY); pDC-> SelectObject(oldBmp);
CDC* pDC=m_ctrlrx.GetDC();
m_pBitmap.LoadBitmap(IDB_BITMAP1);
BITMAP bm;
m_pBitmap.GetBitmap(&bm);
int nWidth=bm.bmWidth,nHeight=bm.bmHeight;
CDC MemDC;
MemDC.CreateCompatibleDC(pDC);
CBitmap* oldBmp = pDC-> SelectObject(&m_pBitmap);
pDC->SetStretchBltMode(HALFTONE);
int i=pDC-> BitBlt(0,0,nWidth-1,nHeight,&MemDC,0,0,SRCCOPY); pDC-> SelectObject(oldBmp);
pDC-> SelectObject(oldBmp);
这两句能让你中间所有的操作都等于没做,你试试MemDC.SelectObject(&m_pBitmap);