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