VC2005中将Picture控件显示图片保存为BMP,JPG等格式

1.在stdafx.h头文件中加入

　　#include <atlimage.h>

2.保存图片

　　方法一：　　

  HBITMAP hBitmap = NULL;
  //创建位图段
  BITMAPINFO bmi;
  LPBYTE pBits;
  ZeroMemory(&bmi,sizeof(bmi));
  //m_bmpShow为Picture Control控件变量名称
  CDC *pShowDC = m_bmpShow.GetDC();

  //获取Picture Control控件的宽度和高度
  //CRect m_rcShow
  m_bmpShow.GetWindowRect(&m_rcShow);

  bmi.bmiHeader.biSize   =   sizeof(BITMAPINFOHEADER);
  bmi.bmiHeader.biWidth   =   m_rcShow.Width();
  bmi.bmiHeader.biHeight   =  m_rcShow.Height();
  bmi.bmiHeader.biPlanes   =   1;
  bmi.bmiHeader.biBitCount   =   24;
  bmi.bmiHeader.biCompression   =   BI_RGB;
  hBitmap = CreateDIBSection(pShowDC->m_hDC,&bmi,DIB_RGB_COLORS,(void **)&pBits,0,0);
  //创建兼容dc并选择位图段
  CDC dcMem;
  dcMem.CreateCompatibleDC(pShowDC);
  dcMem.SelectObject(hBitmap);
  dcMem.BitBlt(0,0,m_rcShow.Width(),m_rcShow.Height(),pShowDC,0,0,SRCCOPY);
  m_bmpShow.ReleaseDC(pShowDC);
  if( hBitmap )
  {
   CImage img;
   img.Attach(hBitmap);
   img.Save(_T("f:\\1.bmp"));
   img.Save(_T("f:\\1.jpg"));
　　//其它文件格式同理
   DeleteObject(hBitmap);
   AfxMessageBox(_T("OK!!"));
  }

方法二：

//m_bmpShow为Picture Control控件变量名称
 CDC *pdc = m_bmpShow.GetDC();
 CImage imag;
 //获取Picture Control控件的宽度和高度
 CRect rcClient;
 m_bmpShow.GetWindowRect(&rcClient);
 imag.Create(rcClient.Width(),rcClient.Height(),32);

::BitBlt(imag.GetDC(),0,0,rcClient.Width(),rcClient.Height(),pdc->m_hDC,0,0,SRCCOPY);

 imag.Save(_T("f:\\2.bmp"));
 imag.Save(_T("f:\\21.jpg"));
 ReleaseDC(pdc);
 imag.ReleaseDC();
 AfxMessageBox(_T("OK!"));

参考：http://blog.sina.com.cn/s/blog_56e19aa70100c59k.html

　　　http://blog.sina.com.cn/s/blog_56e19aa70100c5a0.html