MFC uses JPG images to make dialog box backgrounds

void Cdlglogon::onpaint () {CPAINTDC DC (this),//device context for painting//TODO: Add Message Handler code here//Do not call for drawing messages Cdialo

	Gex::onpaint () CString strpath;

	strpath + = "d:\\res\\logpicture1.jpg";
	CFile M_file (Strpath,cfile::moderead); Gets the file length DWORD M_filelen = M_file. 
	GetLength ();

	Allocate space on the heap hglobal M_hglobal = GlobalAlloc (Gmem_moveable,m_filelen);
	LPVOID pvdata = NULL;

	Locks the heap space and gets a pointer to the heap space pvdata = GlobalLock (M_hglobal); Reads the file data into the heap m_file.

	Read (Pvdata,m_filelen);

	istream* M_stream;

	GlobalUnlock (M_hglobal);

	Creates a Stream object CreateStreamOnHGlobal (M_hglobal,true,&m_stream) in the heap;
	Use the stream to load the image oleloadpicture (M_stream,m_filelen,true,iid_ipicture, (lpvoid*) &m_picture);

	M_stream->release ();
	M_picture->get_width (&m_width);//wide-height, mm_himetric mode, unit 0.01 mm m_picture->get_height (&m_height);
	M_isshow = TRUE; M_file.

	Close ();
		if (m_isshow==true) {CRect rect;
		GetClientRect (rect);
		int NW, NH; NW = (int) (rect.
		Width ()); NH = (int) (rect.
		Height ()); M_Picture->render (Dc,0,0,nw,nh,0,m_height,m_width,-m_height,&rect);
} cdialogex::onpaint (); }

Transferred from: Http://blog.csdn.net/lili893628843/article/details/8200906?utm_source=jiancool