CBitmap.LoadBitmap()如何加载磁盘上的一个bmp?(很急)

Question

具体的讲:
bmp文件路径:d:\abc.bmp;
CBitmap m_mybitmap;m_mybitmap.LoadBitmap()如何将"d:\abc.bmp"动态加载,而不是设计时将"d:\abc.bmp"作为资源;

Answer 1

自己参考吧
1)
    CGraphDoc* pDoc = GetDocument();
    ASSERT_VALID(pDoc);        
    HBITMAP hBitmap = (HBITMAP) LoadImage(NULL, _T          ("c:\\backgrnd.bmp"), IMAGE_BITMAP,
                    0, 0, LR_CREATEDIBSECTION | LR_DEFAULTSIZE | LR_LOADFROMFILE);
    m_bitmaptest->Attach(hBitmap);   
    if(hBitmap==NULL)
        MessageBox("error");
    BITMAP bm1;
    m_bitmaptest->GetObject(sizeof(BITMAP),&bm1);
    CDC dcImage;
    if (!dcImage.CreateCompatibleDC(pDC))
        return ;
    CBitmap* pOldBitmap = dcImage.SelectObject(m_bitmaptest);  
    CRect rect_t1;    
    GetClientRect(&rect_t1);    
for(int wide_x=0;wide_x<rect_t1.right;wide_x+=bm1.bmWidth) 
   for(int wide_y=0;wide_y<rect_t1.bottom;wide_y+=bm1.bmHeight)
    {
        pDC->BitBlt( wide_x, wide_y, bm1.bmWidth, bm1.bmHeight, &dcImage,    0, 0, SRCCOPY );
    }
    dcImage.SelectObject(pOldBitmap);
    DeleteObject(m_bitmaptest->Detach()); 
2)
设lpszName 是你要加载的位图路径，pDC是显示DC
则：
    const char* lpszName = "c:\\test.bmp";
    HBITMAP hBitmap = (HBITMAP)::LoadImage(NULL,
                                            lpszName,
                                            IMAGE_BITMAP,
                                             0,
                                             0,
                                              LR_LOADFROMFILE);
    CBitmap bmp;
    bmp.Attach(hBitmap);
    BITMAP bm;
    bmp.GetBitmap(&bm);
    CDC memDC;
    memDC.CreateCompatibleDC(pDC);
    CBitmap *pOldBmp = memDC.SelectObject(&bmp);
    pDC->BitBlt(0,0,bm.bmWidth,bm.bmHeight,&memDC,0,0,SRCCOPY);    memDC.SelectObject(pOldBmp);
---------------------------------------
void CTestListDlg::OnPaint() 
{
    CPaintDC dc(this); // device context for painting
    
    // TODO: Add your message handler code here
    HBITMAP hBitmap;    hBitmap=(HBITMAP)LoadImage(
      ::AfxGetInstanceHandle(),"res\\background.bmp",
      IMAGE_BITMAP,0,0,
      LR_LOADFROMFILE|LR_CREATEDIBSECTION);
    ASSERT( hBitmap);
    HBITMAP hOldBitmap;
    
    CDC MemDC;
   CRect rect;
   CDC *pDC=this->GetDC();
   MemDC.CreateCompatibleDC(pDC);
   GetClientRect(rect);
   hOldBitmap=(HBITMAP)MemDC.SelectObject(hBitmap);
   pDC->BitBlt(0,0,rect.Width(),rect.Height(),&MemDC,0,0,SRCCOPY);
   MemDC.SelectObject(hOldBitmap);    // Do not call CDialog::OnPaint() for painting messages
}

Answer 2

CBitmap::LoadBitmap()不能载入硬盘上的文件。
用LoadImage()就可以了！用法楼上的就行了！