CImage的使用

CImage的使用

包含ATL头文件
在stdafx.h 添加
#include <atlimage.h>

在本地加载图片。
m_Image.Load(L"D:\\我的文档\\Visual Studio 2005\\Projects\\20100115\\CCImageTestDlg\\CCImageTestDlg\\res\\my.png");
 CClientDC dc(this);
 m_Image.Draw(dc, 0, 0, m_Image.GetWidth(), m_Image.GetHeight(), 0, 0, m_Image.GetWidth(), m_Image.GetHeight());

资源中文件的显示：
bool ImageFromIDResource(void)
{
 UINT nID = IDR_PNG1;
 LPCTSTR sTR = _T("PNG");

 //UINT nID = IDB_BITMAP1;
 //LPCTSTR sTR = RT_BITMAP;

 HINSTANCE hInst = AfxGetResourceHandle();
 HRSRC hRsrc = ::FindResource (hInst,MAKEINTRESOURCE(nID),sTR); // type
 if (!hRsrc)
  return FALSE;

 // load resource into memory
 DWORD len = SizeofResource(hInst, hRsrc);
 BYTE* lpRsrc = (BYTE*)LoadResource(hInst, hRsrc);
 if (!lpRsrc)
  return FALSE;

 // Allocate global memory on which to create stream
 HGLOBAL m_hMem = GlobalAlloc(GMEM_FIXED, len);
 BYTE* pmem = (BYTE*)GlobalLock(m_hMem);
 memcpy(pmem,lpRsrc,len);
 IStream* pstm;
 CreateStreamOnHGlobal(m_hMem,FALSE,&pstm);

 // load from stream
 m_Image.Load(pstm);

 CClientDC dc(this);
 m_Image.Draw(dc, 0, 0, m_Image.GetWidth(), m_Image.GetHeight(), 0, 0, m_Image.GetWidth(), m_Image.GetHeight());
 // free/release stuff
 GlobalUnlock(m_hMem);
 pstm->Release();
 FreeResource(lpRsrc);

 return false;
}