如何给CDialog贴个背景图？

Question

背景图可能来自一个bmp或者其它格式文件，也可能来自资源ID，分别怎么实现呢？谢谢

Answer 1

http://72.14.203.104/search?&q=cache:RvlV-q_f8PQJ:upsblt.com/data/web5003/20050417/20050417__3860925.html+VC+%E5%AF%B9%E8%AF%9D%E6%A1%86+%E8%83%8C%E6%99%AF%E5%9B%BE%E7%89%87&hl=zh-CN

Answer 2

http://upsblt.com/data/web5003/20050417/20050417__3860925.html从文件和从资源读入位图差别不大，分别实现一下，拿到CBitmap指针或者HBITMAP以后处理都是一样的。

Answer 3

如此即可:
BOOL CMyDialog::OnEraseBkgnd(CDC* pDC) 
{
HBITMAP hBmp = (HBITMAP)LoadImage(AfxGetInstanceHandle(),"C:\\background.bmp",IMAGE_BITMAP,0,0,LR_LOADFROMFILE);
HDC hMemDC = CreateCompatibleDC(pDC->m_hDC);
CBitmap bmp();
bmp.Attach(hBmp);
BITMAP bm;
bmp.GetBitmap(&bm);
SelectObject(hMemDC,hBmp);
CRect rc;
GetClientRect(rc);
StretchBlt(pDC->m_hDC,0,0,rc.Width(),rc.Height(),hMemDC,0,0,bm.bmWidth,bm.bmHeight,SRCCOPY);
bmp.DeleteObject();
return TRUE;
}

Answer 4

http://www.codeguru.com/cpp/w-d/dislog/bitmapsimages/article.php/c5075/
http://www.codeguru.com/cpp/w-d/dislog/bitmapsimages/article.php/c5055/
http://www.codeguru.com/cpp/w-d/dislog/bitmapsimages/article.php/c4977/
http://www.codeguru.com/cpp/w-d/dislog/bitmapsimages/article.php/c1877/

Answer 5

补充一下，在onsize和初始化时，也要copy图才行。恩

Answer 6

BOOL CMyDialog::OnEraseBkgnd(CDC* pDC) 
{
HBITMAP hBmp = (HBITMAP)LoadImage(AfxGetInstanceHandle(),"C:\\background.bmp",IMAGE_BITMAP,0,0,LR_LOADFROMFILE);
HDC hMemDC = CreateCompatibleDC(pDC->m_hDC);
CBitmap bmp();
bmp.Attach(hBmp);
BITMAP bm;
bmp.GetBitmap(&bm);
SelectObject(hMemDC,hBmp);
CRect rc;
GetClientRect(rc);
StretchBlt(pDC->m_hDC,0,0,rc.Width(),rc.Height(),hMemDC,0,0,bm.bmWidth,bm.bmHeight,SRCCOPY);
bmp.DeleteObject();
return TRUE;
}
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是滴，当时就是这样。12句代码没有一句废话，鹦鹉兄果然不凡。