编程技巧20法(11-20)

天云上人 · 发表于 2004-1-4 21:09:15

编程技巧20法(11-20)
徐景周
日期:2002-09-12


11. 如何判断当前操作系统的版本

//------------------------------------------------------------------------------------------------

//判断操作系统涵数及变量

typedef enum tagWin32SysType{
Windows32s,
WindowsNT3,
Windows95,
Windows98,
WindowsME,
WindowsNT4,
Windows2000,
WindowsXP
}Win32SysType;

//判断操作系统涵数及变量，jingzhou xu

Win32SysType IsShellSysType()
{
Win32SysType  ShellType;
DWORD winVer;
OSVERSIONINFO *osvi;

winVer=GetVersion();

if(winVer<0x80000000){/*NT */
      ShellType=WindowsNT3;
      osvi= (OSVERSIONINFO *)malloc(sizeof(OSVERSIONINFO));
      if (osvi!=NULL){
         memset(osvi,0,sizeof(OSVERSIONINFO));
         osvi->dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
         GetVersionEx(osvi);
         if(osvi->dwMajorVersion==4L)ShellType=WindowsNT4;
         else if(osvi->dwMajorVersion==5L&&osvi->dwMinorVersion==0L)ShellType=Windows2000;
         else if(osvi->dwMajorVersion==5L&&osvi->dwMinorVersion==1L)ShellType=WindowsXP;
         free(osvi);
      }
}
else if  (LOBYTE(LOWORD(winVer))<4)
      ShellType=Windows32s;
else{
      ShellType=Windows95;
      osvi= (OSVERSIONINFO *)malloc(sizeof(OSVERSIONINFO));
      if (osvi!=NULL){
         memset(osvi,0,sizeof(OSVERSIONINFO));
         osvi->dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
         GetVersionEx(osvi);
         if(osvi->dwMajorVersion==4L&&osvi->dwMinorVersion==10L)ShellType=Windows98;
         else if(osvi->dwMajorVersion==4L&&osvi->dwMinorVersion==90L)ShellType=WindowsME;
         free(osvi);
      }
}
return ShellType;
}

//------------------------------------------------------------------------------------------------

12. 如何在指定矩形框内水平/垂直显示多行文字

///////////////////////////////////////////////////////
//说明：
//  在矩形框中水平或垂直显示多行文字，jingzhou xu.
//  lMode: 排列方式，0:水平方式; 1:垂直对齐
//  lHori: 水平对齐方式, 0:左对齐; 1:居中; 2:右对齐; 3：自定义
//  lVert: 垂直对齐方式, 0:顶对齐; 1:居中; 2:底对齐; 3：自定义
///////////////////////////////////////////////////////

CRect DrawTitleInRect(CDC *pDC, CString szString, LPRECT lpRect, long lMode, long lHori, long lVert)
{
TEXTMETRIC tm;
pDC->GetTextMetrics(&tm);
int tmpWidth=tm.tmAveCharWidth, tmpHeight=tm.tmHeight;

CRect rcInner(lpRect);
if(lMode==0)
{
      rcInner.left+=tmpWidth;
      rcInner.right-=tmpWidth;
      rcInner.top-=tmpWidth;
      rcInner.bottom+=tmpWidth;
}
if(lMode==1)
{
      rcInner.left+=tmpWidth;
      rcInner.right=rcInner.left+tmpWidth;
      rcInner.top-=tmpWidth;
      rcInner.bottom+=tmpWidth;
}

pDC->DrawText(szString, rcInner,DT_CALCRECT);
switch(lHori)
{
case 0:
      break;
case 1:
      {
         long xOutCent=(lpRect->right+lpRect->left)/2;
         long xInnCent=(rcInner.right+rcInner.left)/2;
         rcInner.left+=(xOutCent-xInnCent);
         rcInner.right+=(xOutCent-xInnCent);
      }
      break;
case 2:
      {
         long lInWidth=rcInner.right-rcInner.left;
         rcInner.right=lpRect->right-tmpWidth;
         rcInner.left=rcInner.right-lInWidth;
      }
      break;
default:
      break;
}

switch(lVert)
{
case 0:
      break;
case 1:
      {
         long yOutCent=(lpRect->bottom+lpRect->top)/2;
         long yInnCent=(rcInner.bottom+rcInner.top)/2;
         rcInner.top-=(yInnCent-yOutCent);
         rcInner.bottom-=(yInnCent-yOutCent);
      }
      break;
case 2:
      {
         long lInHeigh=rcInner.top-rcInner.bottom;
         rcInner.bottom=lpRect->bottom+tmpWidth;
         rcInner.top=rcInner.bottom+lInHeigh;
      }
      break;
default:
      break;
}

//---------------------------------------------------------------------------------------------
//功能：根据新、老矩形，重新计算行数，使文字多行显示,jingzhou xu
//---------------------------------------------------------------------------------------------
//一行中最大字符数
int nMaxLineChar = abs(lpRect->right - lpRect->left) / tmpWidth ;
//记录当前行的宽度
short theLineLength=0;
//记录当前行中汉字字节数，以防止将一半汉字分为两行
unsigned short halfChinese=0;

for(int i=0; i<=szString.GetLength()-1; i++)
{
      if(((unsigned char)szString.GetAt(i) == 0x0d) && ((unsigned char)szString.GetAt(i+1) == 0x0a))
         theLineLength=0;

   //大于0xa1的字节为汉字字节
      if((unsigned char)szString.GetAt(i) >= 0xA1)
         halfChinese++;
      theLineLength++;

      //如果行宽大于每行最大宽度，进行特殊处理
      if(theLineLength > nMaxLineChar)
      {
         //防止将一个汉字分为两行，回溯
         if(halfChinese%2)
         {
            szString.Insert(i,(unsigned char)0x0a);
            szString.Insert(i,(unsigned char)0x0d);
         }
         else
         {
            szString.Insert(i-1,(unsigned char)0x0a);
            szString.Insert(i-1,(unsigned char)0x0d);
         }

         theLineLength = 0;
      }
}

//重新计算矩形边界范围
// int tmpLine = int(abs(szString.GetLength()*tmpWidth / abs(lpRect->right - lpRect->left)-0.5));

// tmpLine += (szString.GetLength()*tmpWidth % abs(lpRect->right - lpRect->left))? 1 : 0;
// if(tmpLine == 0)
//       tmpLine = 1;

if(rcInner.bottom > lpRect->bottom)
      rcInner.bottom = lpRect->bottom;
if(rcInner.top < lpRect->top)
      rcInner.top = lpRect->top;

//---------------------------------------------------------------------------------------------

if(lHori==0)
      pDC->DrawText(szString, rcInner, DT_WORDBREAK|DT_LEFT);
else if(lHori==1)
      pDC->DrawText(szString, rcInner, DT_WORDBREAK|DT_CENTER);
else if(lHori==2)
      pDC->DrawText(szString, rcInner, DT_WORDBREAK|DT_RIGHT);
return rcInner;
}

13. 如何在指定矩形中旋转显示文字

///////////////////////////////////////////////////////
//说明：
//  在矩形框中旋转方式显示文字，jingzhou xu
//参数：
//  pDC:       DC指针
//  str:       显示文字
//  rect:       显示范围
//  angle:       旋转角度
// nOptions: ExtTextOut()中相应设置
///////////////////////////////////////////////////////

void DrawRotatedText(CDC* pDC, const CString str, CRect rect,
                  double angle, UINT nOptions)
{
//按比例转换角度值
double pi = 3.141592654;
double radian = pi * 2 / 360 * angle;

//获取显示文字中心点
CSize TextSize = pDC->GetTextExtent(str);
CPoint center;
center.x = TextSize.cx / 2;
center.y = TextSize.cy / 2;

//计算显示文字新的中心点
CPoint rcenter;
rcenter.x = long(cos(radian) * center.x - sin(radian) * center.y);
rcenter.y = long(sin(radian) * center.x + cos(radian) * center.y);

//绘制文字
pDC->SetTextAlign(TA_BASELINE);
pDC->SetBkMode(TRANSPARENT);
pDC->ExtTextOut(rect.left + rect.Width() / 2 - rcenter.x,
               rect.top + rect.Height() / 2 + rcenter.y,
               nOptions, rect, str, NULL);
}

14. 如何将32 x 32像素图标转换为16 x 16像素值的图标

HICON Convert32x32IconTo16x16(HICON h32x32Icon)
{
  HDC hMainDC, hMemDC1, hMemDC2;
  HICON h16x16Icon;
  BITMAP bmp;
  HBITMAP hOldBmp1, hOldBmp2;
  ICONINFO IconInfo32x32, IconInfo16x16;

  GetIconInfo(h32x32Icon, &IconInfo32x32);

  hMainDC = ::GetDC(m_hWnd);
  hMemDC1 = CreateCompatibleDC(hMainDC);
  hMemDC2 = CreateCompatibleDC(hMainDC);

  GetObject(IconInfo32x32.hbmColor, sizeof(BITMAP), &bmp);

  IconInfo16x16.hbmColor = CreateBitmap( 16, 16,
                                       bmp.bmPlanes,
                                       bmp.bmBitsPixel,
                                       NULL);

  hOldBmp1 = (HBITMAP) SelectObject( hMemDC1,
                                 IconInfo32x32.hbmColor);
  hOldBmp2 = (HBITMAP) SelectObject( hMemDC2,
                                 IconInfo16x16.hbmColor);

  StretchBlt(hMemDC2,
   0, 0,
   16, 16,
   hMemDC1,
   0, 0,
   32, 32,
   SRCCOPY
   );

  GetObject(IconInfo32x32.hbmMask, sizeof(BITMAP), &bmp);

  IconInfo16x16.hbmMask = CreateBitmap( 16, 16,
                                    bmp.bmPlanes,
                                    bmp.bmBitsPixel,
                                    NULL);

  SelectObject(hMemDC1, IconInfo32x32.hbmMask);
  SelectObject(hMemDC2, IconInfo16x16.hbmMask);

  StretchBlt(hMemDC2,
         0, 0,
         16, 16,
         hMemDC1,
         0, 0,
         32, 32,
         SRCCOPY
   );

  SelectObject(hMemDC1, hOldBmp1);
  SelectObject(hMemDC2, hOldBmp2);

  IconInfo16x16.fIcon = TRUE;
  h16x16Icon = CreateIconIndirect(&IconInfo16x16);
  DeleteObject(IconInfo32x32.hbmColor);
  DeleteObject(IconInfo16x16.hbmColor);
  DeleteObject(IconInfo32x32.hbmMask);
  DeleteObject(IconInfo16x16.hbmMask);
  DeleteDC(hMemDC1);
  DeleteDC(hMemDC2);

  ::ReleaseDC(m_hWnd, hMainDC);
  return h16x16Icon;
}

15. 如何建立一个灰度级图标

HICON CreateGrayscaleIcon(HICON hIcon)
{
  HICON    hGrayIcon = NULL;
  HDC       hMainDC = NULL,
            hMemDC1 = NULL,
            hMemDC2 = NULL;
  BITMAP    bmp;
  HBITMAP    hOldBmp1 = NULL,
            hOldBmp2 = NULL;
  ICONINFO csII, csGrayII;
  BOOL       bRetValue = FALSE;

  bRetValue = ::GetIconInfo(hIcon, &csII);

  if (bRetValue == FALSE) return NULL;

  hMainDC = ::GetDC(m_hWnd);
  hMemDC1 = ::CreateCompatibleDC(hMainDC);
  hMemDC2 = ::CreateCompatibleDC(hMainDC);
  if (hMainDC == NULL ||
hMemDC1 == NULL ||
hMemDC2 == NULL)
   return NULL;

  if (::GetObject(csII.hbmColor,
            sizeof(BITMAP), &
            amp;bmp))
  {
csGrayII.hbmColor =
      ::CreateBitmap(csII.xHotspot*2,
                     csII.yHotspot*2,
                     bmp.bmPlanes,
                     bmp.bmBitsPixel,
                     NULL);
if (csGrayII.hbmColor)
{
   hOldBmp1 =
      (HBITMAP)::SelectObject(hMemDC1,
                              csII.hbmColor);
   hOldBmp2 =
      (HBITMAP)::SelectObject(hMemDC2,
                              csGrayII.hbmColor);

   ::BitBlt(hMemDC2, 0, 0, csII.xHotspot*2,
            csII.yHotspot*2, hMemDC1, 0, 0,
            SRCCOPY);

   DWORD dwLoopY = 0, dwLoopX = 0;
   COLORREF crPixel = 0;
   BYTE    byNewPixel = 0;
   for (dwLoopY = 0; dwLoopY < csII.yHotspot*2; dwLoopY++)
   {
      for (dwLoopX = 0; dwLoopX < csII.xHotspot*2; dwLoopX++)
      {
      crPixel = ::GetPixel(hMemDC2, dwLoopX, dwLoopY);
      byNewPixel = (BYTE)((GetRValue(crPixel) * 0.299) +
            (GetGValue(crPixel) * 0.587) +
            (GetBValue(crPixel) * 0.114));
      if (crPixel) ::SetPixel(hMemDC2,
                              dwLoopX,
                              dwLoopY,
                              RGB(byNewPixel,
                              byNewPixel,
                              byNewPixel));
   } // for
   } // for
   ::SelectObject(hMemDC1, hOldBmp1);
   ::SelectObject(hMemDC2, hOldBmp2);

   csGrayII.hbmMask = csII.hbmMask;
   csGrayII.fIcon = TRUE;
   hGrayIcon = ::CreateIconIndirect(&csGrayII);
} // if
:

eleteObject(csGrayII.hbmColor);
//:

eleteObject(csGrayII.hbmMask);
} // if
:

eleteObject(csII.hbmColor);
  ::DeleteObject(csII.hbmMask);
  ::DeleteDC(hMemDC1);
  ::DeleteDC(hMemDC2);
  ::ReleaseDC(m_hWnd, hMainDC);

  return hGrayIcon;
}

16. 如何按指定角度旋转显示内存位图(用法和BitBlt类似)

void RotBlt(HDC destDC, int srcx1, int srcy1, int srcx2, int srcy2,

  HDC srcDC , int destx1, int desty1 ,int thetaInDegrees ,DWORD mode)
{
  double theta = thetaInDegrees * (3.14159/180);

  //原图像原始大小

  int width = srcx2 - srcx1;
  int height = srcy2 - srcy1;

  //原图像中心点
  int centreX = int(float(srcx2 + srcx1)/2);
  int centreY = int(float(srcy2 + srcy1)/2);

  //判断出图像可以沿任意方向旋转的矩形框
  if(width>height)height = width;
  else
width = height;

  HDC memDC = CreateCompatibleDC(destDC);
  HBITMAP memBmp = CreateCompatibleBitmap(destDC, width, height);

  HBITMAP obmp = (HBITMAP) SelectObject(memDC, memBmp);

  //内存DC新在中心点

  int newCentre = int(float(width)/2);
  //开始旋转
  for(int x = srcx1; x<=srcx2; x++)
for(int y = srcy1; y<=srcy2; y++)
{
   COLORREF col = GetPixel(srcDC,x,y);
   int newX = int((x-centreX)*sin(theta)+(y-centreY)*cos(theta));
   int newY = int((x-centreX)*cos(theta)-(y-centreY)*sin(theta));
   SetPixel(memDC , newX + newCentre, newY + newCentre, col);
}

  //复制到目标DC上
  BitBlt(destDC, destx1, desty1, width, height, memDC, 0,0,mode);
  //释放内存
  SelectObject(memDC, obmp);
  DeleteDC(memDC);
  DeleteObject(memBmp);
}

用法：

RotBlt(dc, 0,0,150,150,memDC,200,0, 45, SRCCOPY);

17. 如何将指定的窗体，以位图形式复制到系统剪切板上

void CScreenSnapDlg::toClipboard_Bio(CWnd * wnd, BOOL FullWnd)
{
   CDC *dc;
   if(FullWnd)
      { /* 抓取整个窗口 */
      dc = new CWindowDC(wnd);
      } /* 抓取整个窗口 */
   else
      { /* 仅抓取客户区时 */
      dc = new CClientDC(wnd);
      } /* 仅抓取客户区时 */

   CDC memDC;
   memDC.CreateCompatibleDC(dc);

   CBitmap bm;
   CRect r;
   if(FullWnd)
      wnd->GetWindowRect(&r);
   else
      wnd->GetClientRect(&r);

   CString s;
   wnd->GetWindowText(s);
   CSize sz(r.Width(), r.Height());

   bm.CreateCompatibleBitmap(dc, sz.cx, sz.cy);
   CBitmap * oldbm = memDC.SelectObject(&bm);
   memDC.BitBlt(0, 0, sz.cx, sz.cy, dc, 0, 0, SRCCOPY);

   //直接调用OpenClipboard()，而不用wnd->GetParent()->OpenClipboard();
   wnd->OpenClipboard();
   ::EmptyClipboard();
   ::SetClipboardData(CF_BITMAP, bm.m_hObject);
   CloseClipboard();

   //恢复原始环境
   memDC.SelectObject(oldbm);
   bm.Detach();
   delete dc;
}

18. 如何替换HBITMAP中的颜色值

#define COLORREF2RGB(Color) (Color & 0xff00) | ((Color >> 16) & 0xff) \
                                          | ((Color << 16) & 0xff0000)

HBITMAP ReplaceColor (HBITMAP hBmp,COLORREF cOldColor,COLORREF cNewColor)
{
HBITMAP RetBmp=NULL;
if (hBmp)
{
      HDC BufferDC=CreateCompatibleDC(NULL);       // 源位图DC
      if (BufferDC)
      {
         SelectObject(BufferDC,hBmp); 　 // 选入DC中
         HDC DirectDC=CreateCompatibleDC(NULL);    // 目标DC
         if (DirectDC)
         {
            // 获取源位图大小
            BITMAP bm;
            GetObject(hBmp, sizeof(bm), &bm);

            // 初始化BITMAPINFO信息，以便使用CreateDIBSection
            BITMAPINFO RGB32BitsBITMAPINFO;
            ZeroMemory(&RGB32BitsBITMAPINFO,sizeof(BITMAPINFO));
            RGB32BitsBITMAPINFO.bmiHeader.biSize=sizeof(BITMAPINFOHEADER);
            RGB32BitsBITMAPINFO.bmiHeader.biWidth=bm.bmWidth;
            RGB32BitsBITMAPINFO.bmiHeader.biHeight=bm.bmHeight;
            RGB32BitsBITMAPINFO.bmiHeader.biPlanes=1;
            RGB32BitsBITMAPINFO.bmiHeader.biBitCount=32;

            UINT * ptPixels;
            HBITMAP DirectBitmap= CreateDIBSection(DirectDC,
                     (BITMAPINFO *)&RGB32BitsBITMAPINFO,
                     DIB_RGB_COLORS,(void **)&ptPixels, NULL, 0);
            if (DirectBitmap)
            {
                  HGDIOBJ PreviousObject=SelectObject(DirectDC, DirectBitmap);
                  BitBlt(DirectDC,0,0,bm.bmWidth,bm.bmHeight,BufferDC,0,0,SRCCOPY);

                  // 转换 COLORREF 为 RGB
                  cOldColor=COLORREF2RGB(cOldColor);
                  cNewColor=COLORREF2RGB(cNewColor);
                  // 替换颜色
                  for (int i=((bm.bmWidth*bm.bmHeight)-1);i>=0;i--)
                  {
                     if (ptPixels==cOldColor) ptPixels=cNewColor;3 L5 b1 C; s% P! |5 l# k
                  }7 H# l9 X5 [+ _, `' a

; O& ~$ ?6 v/ v& o* y                   // 修改位图 DirectBitmap
2 }9 }2 S# m1 n; v* q+ Q5 t                   SelectObject(DirectDC,PreviousObject);. B, c, S0 ?% }$ |& I- Q( h
                  9 ]3 b2 B: w' p9 Z( i% Z" Q
                  // 完成& k" O& l! a( r) m+ U2 w9 V
                  RetBmp=DirectBitmap;
9 M6 O, X. l" q             }, d* h' v$ c# }3 d
            // 释放DC. F- A: N" i9 n7 L3 Z: N3 E
            DeleteDC(DirectDC);9 Q* |6 F$ l$ v+ \0 J) S
         }! p# i  U1 X; N$ Y4 b
         // 释放DC5 s; \: v% l% `
         DeleteDC(BufferDC);# {* F; Y6 T8 F, h9 b! y
      }* A5 }! t0 T) s" i2 g
}
+ q. W7 u5 y0 n* p/ t3 |2 Z return RetBmp;; U% \& q$ J% x  b4 w# H5 M
}, R1 f  F  D" i3 l9 a% x0 Y; f! P
* p+ L% y$ q" b/ i; J
) v' [6 V; L5 F+ U  n+ {  O
用法：
# Y" ~0 _* K+ m3 @- p
9 _2 \6 p7 F' ?0 v; O5 h+ ~; kHBITMAP hBmp2 = LoadBitmap(g_hinstance,MAKEINTRESOURCE(IDB_SAMPLEBITMAP));) l. y/ M( M- U+ y) x! C8 r
HBITMAP hBmp = ReplaceColor(hBmp2,0xff0000,0x00ff00); // 替换蓝色为绿色
/ y) ?) o* A  g# J......
  i) X; z. _2 b& W0 u; k" Z
0 Y  |4 R, N9 t* rDeleteObject(hBmp2);
6 v8 P7 Y& i3 m$ T5 P! j; Z# GDeleteObject(hBmp);
, J- C9 Y0 H! G" d4 A/ p6 R. V- l, P+ ?+ s0 t

" P, s/ Q1 |' o+ \! q: E19. 如何转换并保存位图7 K, \# X1 i+ Q& W. R0 h5 Y* P1 f

1 J" o# K6 A* \$ }//********************************************************************************* R7 v- d3 P$ I* r( h
//* 名称：DDBToDIB0 C& _9 {4 J- a4 [$ ]
//* 作者：徐景周(jingzhou_xu@163.net)  E- P8 K0 B/ @3 q) a1 l7 n
//* 功能：设备相关转换为设备无关位图
6 s3 D- x) z7 c, s//********************************************************************************
, L+ d# r" ?5 \: q; h, f! ^, q" H; Y) ?0 `
HANDLE CScreenSnapDlg::DDBToDIB( CBitmap& bitmap, DWORD dwCompression /* = BI_RGB */) # N/ C. I* B3 c9 u4 L$ g6 A# [9 g4 P
{. z, b, S8 B% F
BITMAP             bm;6 Z% U5 u3 W$ H; k
BITMAPINFOHEADER bi;
( P5 n8 W& C( m1 ]: \7 ` LPBITMAPINFOHEADER  lpbi;4 ]/ X1 R0 ^& p& ^$ y' g  Y
DWORD             dwLen;
  f. n9 `4 R/ H HANDLE             hDIB;
) Q3 I  i  g8 c. Y2 D HANDLE             handle;% ~4 q  J3 l3 l* K8 ~: T
HDC                   hDC;; s8 I# G1 y8 W: F
HPALETTE          hPal;: B) B3 P2 M: l9 _' Y

# S# Y. G) a) N4 j1 o; w- n& H) G CWindowDC          dc( this );
' |; ]; C! z9 ^$ f6 p5 t CPalette          pal;; C( o7 ?/ w: T# a) G6 a
//如果支持调色板的话，则建立它
/ R" x' j* o/ s% ]7 F: v" h$ L if( dc.GetDeviceCaps( RASTERCAPS ) & RC_PALETTE )
; `& n8 p, r: P) a {2 c/ H! a: h" d- L' Q0 s
      UINT       nSize = sizeof(LOGPALETTE) + ( sizeof(PALETTEENTRY) * 256 );6 x# }/ j- }+ {8 d; q  P: f
      LOGPALETTE* pLP    = (LOGPALETTE*)new BYTE[nSize];
      pLP->palVersion    = 0x300;5 h( o; Q$ y0 f# q
      pLP->palNumEntries = (unsigned short)GetSystemPaletteEntries( dc, 0, 255,
0 @1 o) u3 u% C4 \3 R+ r+ v: [& k- Y       pLP->palPalEntry );& j# }0 |: j  |- U: x

( _6 z( F: Q8 g1 N8 \  |       pal.CreatePalette( pLP );
, S' _& U  i6 X3 x$ i; h% b3 \6 L' A( ?; \, c& F. l! z1 G
      //释放
' q; W5 c7 M( R( S       delete[] pLP;. E: }7 t* R) [3 z! l5 U
}  J+ P% x- C# a( @/ O

+ [! e, j- L% q+ \1 ]! { ASSERT( bitmap.GetSafeHandle() );
9 L  O4 z1 B7 x  a' q8 b5 S0 ?# k7 D- o1 g: d3 X2 w2 I
! ~0 N; b- \: Z; w- R$ \; Z- u, j
//不支持BI_BITFIELDS类型3 h( Q7 x  s) O2 {* S
if( dwCompression == BI_BITFIELDS )5 _  A3 A! v, m, C7 y
      return NULL;
8 R+ \; x4 t5 s1 M4 |% c
, c% q* C$ O/ |" H) w6 b0 A  W //如果调色板为空，则用默认调色板/ d0 p. M6 l: ~6 g3 m5 ^- E# p. G( U
hPal = (HPALETTE) pal.GetSafeHandle();, u5 c) Y' W: w6 n4 q
if (hPal==NULL)$ f4 ~* I' m! ~% t3 V
      hPal = (HPALETTE) GetStockObject(DEFAULT_PALETTE);
  v# @0 ]; H  k3 Q! f
* u5 s0 m# R+ ]: J1 Q* A+ Z //获取位图信息
$ Y# M2 [6 o# n& |( S bitmap.GetObject(sizeof(bm),(LPSTR)&bm);
# u5 W( l: m; m) n6 z, ^' |
0 t0 Q: c3 a/ Q) y, V: f  r# a) |' n //初始化位图信息头+ S+ Z$ Y" {9 `4 c) _
bi.biSize       = sizeof(BITMAPINFOHEADER);
/ n4 P4 b  e, T: ~+ P bi.biWidth       = bm.bmWidth;
3 X6 e/ ]2 B% Q1 i( f5 Q7 ?$ |; \ bi.biHeight       = bm.bmHeight;- _, z/ H- ]. `9 E2 O0 \
bi.biPlanes       = 1;
( I: v6 S" l  p. s bi.biBitCount       = (unsigned short)(bm.bmPlanes * bm.bmBitsPixel) ;4 u. X$ ?) G7 @" A' ]
bi.biCompression = dwCompression;8 V8 ^$ G- I* }! j2 d+ r
bi.biSizeImage       = 0;
+ k" i, ^8 U' y bi.biXPelsPerMeter = 0;
6 A: ~) E, P# f  @ bi.biYPelsPerMeter = 0;
& x- t' L4 J6 G$ Y3 ]! P bi.biClrUsed       = 0;! x, E% l! N, A1 G% y
bi.biClrImportant = 0;8 a/ P5 a2 M: i+ h! M) E$ b4 S: M

/ e9 @* a. r7 _7 C" J1 h1 O //计算信息头及颜色表大小
7 F9 u4 O: @! @( n' J6 K int nColors = 0;( B8 {: ^/ o, D
if(bi.biBitCount <= 8)& p$ l. B; j; B$ |$ X. P  P9 X/ v" `
      {
6 [, [$ ^; x9 l8 T6 U       nColors = (1 << bi.biBitCount);+ D; H  D' ~' i9 V% e0 m7 s
      }. e* C/ s; m% a$ n) S
dwLen  = bi.biSize + nColors * sizeof(RGBQUAD);0 H) h8 f2 Z8 P$ t4 x" ]# ]( a

* M; s6 i' w; t hDC = ::GetDC(NULL);7 F1 h4 ]$ m- b% t7 D" i- X0 |3 }
hPal = SelectPalette(hDC,hPal,FALSE);$ t/ c( P$ ]) K
RealizePalette(hDC);; R8 G& a: w2 E2 t9 x( ?+ U

% ]; }2 @' V0 e //为信息头及颜色表分配内存) r$ U- e* O+ o3 P! _0 w
hDIB = GlobalAlloc(GMEM_FIXED,dwLen);
8 O5 ~& A5 ^# L+ K7 X# X if (!hDIB){
9 G  Z: j% N. j7 |) T+ n       SelectPalette(hDC,hPal,FALSE);
" o/ c8 ^# V1 b! s       ::ReleaseDC(NULL,hDC);( m( i+ H- \  M  J, j3 P0 I
      return NULL;3 {) j2 p( C, f
}$ N) P4 N* n' |0 S

% l; W, h7 y. \) e lpbi = (LPBITMAPINFOHEADER)GlobalLock(hDIB);
+ L4 H! t5 O" l/ W *lpbi = bi;
4 {% ^8 E% O6 x# W3 E; M! K5 G9 \5 }: k! Z; |3 [1 b; T8 L
//调用 GetDIBits 计算图像大小1 @5 y' ]) g) z4 l
GetDIBits(hDC, (HBITMAP)bitmap.GetSafeHandle(), 0L, (DWORD)bi.biHeight,$ t* A$ [7 @' T! J" l' c3 L" h
         (LPBYTE)NULL, (LPBITMAPINFO)lpbi, (DWORD)DIB_RGB_COLORS);
  a+ X+ |9 h6 _8 x* F1 \% E
2 o) q/ g5 }# f7 J# f8 p bi = *lpbi;. M% Z4 B" j9 v: \
8 P! y3 l* `/ d0 B) W3 h- t; y
//图像的每一行都对齐(32bit)边界' G# Y( u  N" Q; x# Z: E  g: F! C: g
if (bi.biSizeImage == 0){2 K+ i6 j; c+ i0 h) T3 g3 C# [
      bi.biSizeImage = ((((bi.biWidth * bi.biBitCount) + 31) & ~31) / 8)
' ?" e3 {! j, d; r, j/ J; w                      * bi.biHeight;! E( w  c9 P. p% J2 H; S, m; Z# _
      if (dwCompression != BI_RGB)
, Q" C  a2 e$ Z8 S' k# _8 i          bi.biSizeImage = (bi.biSizeImage * 3) / 2;
- o8 C( [2 l$ B7 U6 ~; e }% q9 N; `4 `& q$ m
//重新分配内存大小，以便放下所有数据6 q/ }, W) N( Z( c% ^: T
dwLen += bi.biSizeImage;
: @0 t) X% ^4 L; | handle = GlobalReAlloc(hDIB, dwLen, GMEM_MOVEABLE) ;
7 a% |: e2 i6 b4 p if (handle != NULL)
- P/ T" V/ L! b/ C" \; j       hDIB = handle;# I( O/ L; c8 f' r
else
, G- Q* W3 a, t1 G8 k: L0 k1 U       {
9 S8 M5 o% M1 Q2 l       GlobalFree(hDIB);
3 ?6 _1 L7 p4 m# j! m* c1 J1 T
5 O6 d# ~3 ^/ U       //重选原始调色板
: w, E+ A/ X, d$ z& v* K# T& Z' w       SelectPalette(hDC,hPal,FALSE);' ]: c9 f7 T- ]& F
      ::ReleaseDC(NULL,hDC);, q$ k6 i/ @' F- ?
      return NULL;
& w! t4 I( A+ Y2 w: Y       }7 `* t, _% p- U" E/ s6 g
//获取位图数据# g* |, }9 ~+ f$ H; d* O
lpbi = (LPBITMAPINFOHEADER)hDIB;
" w1 I) `( `. g' |# Y& J/ z/ ^ //最终获得的DIB
9 k7 F9 ^+ Y0 v0 S4 Q* h- }- `+ H BOOL bGotBits = GetDIBits( hDC, (HBITMAP)bitmap.GetSafeHandle(),
9 {# L' ^+ f4 M- S# v. ?7 G+ j! ?             0L,                   //扫描行起始处1 Q1 J" s' v- _7 w
            (DWORD)bi.biHeight,    //扫描行数
* V, W2 G- d4 K0 P, O             (LPBYTE)lpbi          //位图数据地址
& O# {+ b/ B6 {7 d             + (bi.biSize + nColors * sizeof(RGBQUAD)),- }6 @. p# w  x$ ^; J) t1 P; w7 p
            (LPBITMAPINFO)lpbi,    //位图信息地址
2 E7 |! V# l0 S             (DWORD)DIB_RGB_COLORS);  //颜色板使用RGB2 b4 D+ n2 q/ h7 a. }
if( !bGotBits )8 U9 J" ^) |0 s
{
+ G9 c* L$ H% T# D% B) e       GlobalFree(hDIB);
+ [8 C: G1 Y+ Z3 o1 l; d: Y# ?       SelectPalette(hDC,hPal,FALSE);
+ v- A+ D6 k2 N; `! a       ::ReleaseDC(NULL,hDC);( V0 M# h4 `9 d
      return NULL;6 l8 H  ]: x1 A9 k/ ]0 _
}
, h; b( b# d( r SelectPalette(hDC,hPal,FALSE);5 i6 G+ ^$ u0 t$ {7 w5 B2 I
::ReleaseDC(NULL,hDC);
' d2 P) {& V/ l+ [$ M return hDIB;
* G4 s  b* ]* d( ?) C# j}
8 K' r  k6 a2 k! o7 S0 c( m: W# ?, Q
  Q5 ]- S7 D! X4 ~" M7 P) P
) `( e9 k# k/ H+ ?$ r' Y8 o/ `0 D//********************************************************************************
2 z$ _. n* m3 i1 i//* 名称：SaveBitmapToFile+ U2 S. E5 u1 f! z( l2 S$ G! F
//* 修改：徐景周(jingzhou_xu@163.net)
" O$ B+ T* v9 Z//* 功能：保存为位图文件9 x+ |# b. V: `. I+ u* M" Y$ f
//********************************************************************************
& d8 Y( k# i7 r; G" [/ GBOOL CScreenSnapDlg::SaveBitmapToFile(HBITMAP hBitmap , CString lpFileName)
7 P* |) q9 e1 |% y3 U! Z$ f{
7 u1 e. u1 i& r5 y6 E HDC             hDC;                         //设备描述表
! z  y3 }& a- q1 I' P1 Q% }" [ int             iBits;                         //当前显示分辨率下每个像素所占字节数- u# O6 _7 c  e3 B) \
WORD          wBitCount;                      //位图中每个像素所占字节数$ j+ q+ `! u- Q7 E3 `( |9 B
DWORD          dwPaletteSize=0,             //定义调色板大小，位图中像素字节大小，位图文件大小，写入文件字节数6 C. V" @) ?4 e5 H& ?
                  dwBmBitsSize,
' k& a  i1 w. J- y* l                   dwDIBSize, dwWritten;
) H9 P+ c8 Y. y  Z BITMAP       Bitmap;       ) |" c: f& O' d4 X) p. B7 z" ]
BITMAPFILEHEADER bmfHdr;                      //位图属性结构 % H- c8 q% r( C) N9 S0 `3 z5 e
BITMAPINFOHEADER bi;                         //位图文件头结构    3 G0 i! b  {- q( `. Z
LPBITMAPINFOHEADER lpbi;                      //位图信息头结构    ; p+ H+ B  O6 ~# S. I
( K  P$ H7 D7 s" x' S3 p
HANDLE       fh, hDib, hPal,hOldPal=NULL; //指向位图信息头结构,定义文件，分配内存句柄，调色板句柄
$ L7 t. K- ^2 x, |) p: e% Z/ M+ p: J

6 L; n3 z# j- k1 c //计算位图文件每个像素所占字节数
4 N' R( }* I0 ~0 u$ n( J' ?; I! j hDC = CreateDC("DISPLAY",NULL,NULL,NULL);
4 p3 A8 c+ C) y/ V. K iBits = GetDeviceCaps(hDC, BITSPIXEL) * 5 L& s4 e, b0 q* L, I5 l: `6 k
GetDeviceCaps(hDC, PLANES);! a) b9 I' O' A7 f# Q2 d  A7 D: r
DeleteDC(hDC);7 p" f1 o& N9 c& _6 n! M6 M" c
if (iBits <= 1)0 L/ K3 X! }* \
   wBitCount = 1;
5 x# X6 y; U$ n. _$ Q. C else if (iBits <= 4)+ a% G$ |* Y) v
   wBitCount = 4;
6 j! x0 L% z8 r: e else if (iBits <= 8)
$ ], I4 W  m8 L2 P    wBitCount = 8;8 t9 W# r& ?3 i7 d
else if (iBits <= 24). `# R2 B, a* J
   wBitCount = 24;
3 `$ M" b; i( `$ y6 g* T
$ A# K4 Q: b6 \0 c  ?4 s5 [- u //计算调色板大小& U, h4 s5 C  ], e! s
if (wBitCount <= 8)
6 t+ n, {! M5 w2 E8 b    dwPaletteSize = (1 << wBitCount) *sizeof(RGBQUAD);
6 B; O" N# s8 }5 a3 U+ O0 a/ l6 T
/ F! i& t+ U$ T6 S$ ~3 D //设置位图信息头结构3 U! O0 y, q' g% {) C
GetObject(hBitmap, sizeof(BITMAP), (LPSTR)&Bitmap);
& j4 }  H- s9 R bi.biSize          = sizeof(BITMAPINFOHEADER);
. Z6 a# x% U: M1 d2 u bi.biWidth          = Bitmap.bmWidth;
9 R4 k) N! `& |$ r! g2 x$ w" A bi.biHeight       = Bitmap.bmHeight;
1 B0 D& b# [$ F: H* P bi.biPlanes       = 1;
. }) O6 }2 u" g7 z0 E. a bi.biBitCount       = wBitCount;
7 A8 @0 V+ {/ J0 m+ l bi.biCompression    = BI_RGB;
8 Q8 s, K$ B' I) Y bi.biSizeImage       = 0;
7 v& y5 i3 O; y: O bi.biXPelsPerMeter    = 0;
  A7 }% K2 y/ S2 c bi.biYPelsPerMeter    = 0;
2 c' V5 u7 y2 [  L  | bi.biClrUsed       = 0;
2 m9 z3 _4 k6 B; G bi.biClrImportant    = 0;  s( Z/ H  c; V
dwBmBitsSize = ((Bitmap.bmWidth *
) {' E+ M1 N" }& l  @5 o8 ~* G0 V wBitCount+31)/32)* 4/ T% J+ S8 ^1 s
   *Bitmap.bmHeight ;& u, p( a- k3 P1 ]. b
% i0 V- ^( d1 W
//为位图内容分配内存( j. F/ B3 z; E1 v# X  s; o3 W! U
hDib  = GlobalAlloc(GHND,dwBmBitsSize+
" E- v- U" ^$ `% f% N3 f- c dwPaletteSize+sizeof(BITMAPINFOHEADER));
0 w. _9 [) v/ k) Z) f lpbi = (LPBITMAPINFOHEADER)GlobalLock(hDib);
3 H7 u  f2 U$ s# v- m; X *lpbi = bi;
1 j: i# h5 f. j# }5 _/ O: ~0 H) R* `' A$ r( Y3 q  |! G, B
// 处理调色板 : c3 |# _4 L2 U6 o8 ^3 g1 M  m* [
hPal = GetStockObject(DEFAULT_PALETTE);
, h3 o% g' z+ F8 h( r if (hPal)' E! v( U2 G& a
{* n  ?' Z! L* {; ]0 S; ]
   hDC  = ::GetDC(NULL);
' Z/ P2 i2 `0 e. e8 n( Y    hOldPal = SelectPalette(hDC, (HPALETTE)hPal, FALSE);" G2 |7 Y; h! s) g  ]3 ^) e
   RealizePalette(hDC);
9 x. [$ W7 ]- R8 M }
3 Z- k+ q. }, a2 N+ d3 P! W) b' T% ?  n0 Q) V- a
  // 获取该调色板下新的像素值
GetDIBits(hDC, hBitmap, 0, (UINT) Bitmap.bmHeight,
6 e4 i' O; k5 L( _4 d    (LPSTR)lpbi + sizeof(BITMAPINFOHEADER)+dwPaletteSize,
) x& `- O# i0 x    (LPBITMAPINFO)lpbi, DIB_RGB_COLORS);6 i* Y" O( M# t6 z$ F9 [& q! B7 U3 Z
9 n- J/ m* d" {5 l; `
  //恢复调色板 5 ^8 f/ w9 m$ ?4 p8 l& S1 ]/ `
if (hOldPal)8 P# }, A  c3 ~
{- o. |. ?1 X5 ]4 v
   SelectPalette(hDC, (HPALETTE)hOldPal, TRUE);
! S" |! r5 Q  e! B( E- F' U' }    RealizePalette(hDC);5 V: c$ g* C$ A  \
   ::ReleaseDC(NULL, hDC);3 d: m4 X5 e) Y3 J/ ~3 Q& j
}
& B1 ]( O8 W$ j& P# ^, t
, I8 S9 X" f" | //创建位图文件
/ X" |2 p! y5 y% ?1 T fh = CreateFile(lpFileName, GENERIC_WRITE,
: C$ V' P! @, m( R" r& G! q6 Y0 t       0, NULL, CREATE_ALWAYS,. k9 Q! c# R1 G- D) z% [
      FILE_ATTRIBUTE_NORMAL | FILE_FLAG_SEQUENTIAL_SCAN, NULL);. D: R, n) s- G2 t- \# p" n
if (fh == INVALID_HANDLE_VALUE)+ X, h% E% ]4 d1 N' X
   return FALSE;: O% H0 @8 G! J- [: {% V' b$ Z
, D! m0 M2 b  `
// 设置位图文件头2 l: L7 n  N% v  o9 k
bmfHdr.bfType = 0x4D42;  // "BM"
! }6 l% y1 h3 T& q dwDIBSize = sizeof(BITMAPFILEHEADER) + sizeof(BITMAPINFOHEADER) + dwPaletteSize + dwBmBitsSize;
2 b! X, X# g8 V" `; K) b bmfHdr.bfSize = dwDIBSize;
- l) G/ O" q0 K3 Y+ N bmfHdr.bfReserved1 = 0;, E: _% [- o8 g, r. A9 t6 Y
bmfHdr.bfReserved2 = 0;
% c% C3 {5 Q5 C+ Q% t. w3 q& P bmfHdr.bfOffBits = (DWORD)sizeof(BITMAPFILEHEADER)
$ q! G# P& {) w( n. n    + (DWORD)sizeof(BITMAPINFOHEADER)! g- c( @# M: G; U0 H+ a3 \
   + dwPaletteSize;6 Y2 G# L- l' u. K2 z
+ z7 L5 u9 i9 t# `4 {% `5 ^

% Z: y: V' V7 v! S7 B* z, j" b // 写入位图文件头8 @# S( Z  v2 B
WriteFile(fh, (LPSTR)&bmfHdr, sizeof- p; _0 ?1 }( G% a7 C9 L0 J3 H
(BITMAPFILEHEADER), &dwWritten, NULL);
! Q# i# _/ {+ Z* N/ O% ^6 h/ U* n) I) L- Y0 L( t; g1 f
// 写入位图文件其余内容
: {8 T) _+ J7 T. @ WriteFile(fh, (LPSTR)lpbi, dwDIBSize,
. ]+ t: g8 K& Q/ n! k) m* Q &dwWritten, NULL);
0 `1 S+ k5 H- z4 v) t& \
0 |+ M/ q% ?8 Y9 N: K. _ //消除内存分配  - Q7 D5 H- t! ^8 v: c* h
GlobalUnlock(hDib);
GlobalFree(hDib);! ?; s# u- W9 c+ c% }
CloseHandle(fh);8 S  V) s2 S0 Z  g) {
( s+ p. g% H% W' ?. q  a
return TRUE;
7 N7 ?/ N% {- r$ ]}6 T3 a2 k( R) o! h1 B+ o. {* n
1 k' K- m( s# P6 f; w, s# \$ o2 y

2 q0 v- R/ s" r9 d3 ]20. 如何获取局域网上计算机名及它们的IP地址5 l: ^7 v' T% ?5 _- t
" T& _3 o$ `0 \1 a7 C
l 连接ws2_32.lib和 mpr.lib库! Q, I) F/ ~* Q3 r' ]# A3 {6 Y

. G. }3 d$ R6 y, a6 Il #include winsock2.h% T! `4 F& y( w6 [" n- B; x5 I
$ E8 _' o' W0 }2 z/ Y
CString strTemp;2 p) j, |0 O, i; q: O: y
struct hostent *host;
: a0 q) j+ u! V2 ]$ }. ], r! e) o9 f  t% Z) z( G$ F
struct in_addr *ptr; // 检索IP地址 ; @& H& P0 `3 ~- v0 Q8 I6 S
DWORD dwScope = RESOURCE_CONTEXT;- t) i! k) `5 D' ]3 W6 ~: I
NETRESOURCE *NetResource = NULL;% L( `% `. f9 P* f* Z
HANDLE hEnum;/ Y0 [! ?+ Z( F3 [
WNetOpenEnum( dwScope, NULL, NULL,
( a" H2 v" c  {8 }          NULL, &hEnum );8 l; ~7 Z: e) C3 F  k

WSADATA wsaData;- K# i( H* z- h  ~
WSAStartup(MAKEWORD(1,1),&wsaData);/ }  j0 q# j! y* d# t5 F! ~
6 ]- `$ O: v) I6 F
if ( hEnum )+ Z; V, k# I/ Z' x% p
{/ V% y+ y) b3 Q& k* n
DWORD Count = 0xFFFFFFFF;. h* h7 T* c+ q  l6 @
DWORD BufferSize = 2048;
/ r* M$ Z) q, }9 K$ T LPVOID Buffer = new char[2048];
0 c9 F6 h# N/ |9 E& n8 q4 ?/ F% }( N WNetEnumResource( hEnum, &Count, 5 k: n4 l3 T8 T( P! d1 c1 s
      Buffer, &BufferSize );1 R1 `9 |! w0 M9 j, e
NetResource = (NETRESOURCE*)Buffer;$ @: J2 i9 N% T+ {

2 ^0 N9 L% ]/ p: L6 W6 f* W char szHostName[200];
2 D8 @  `4 k6 D- i* v" n unsigned int i;
' `- j6 m% y% t; @/ |4 ^. W* {' G# o% l3 }% {
for ( i = 0;
2 V. U, v$ v0 _       i < BufferSize/sizeof(NETRESOURCE); 3 A2 u  U7 Y% e! I) ^6 E
      i++, NetResource++ )
  h" m9 z% E' m- L* G* i {
+ v1 ~. D2 D5 e8 l. S       if ( NetResource->dwUsage == - K0 K" f0 a9 U' X0 c
         RESOURCEUSAGE_CONTAINER && 0 G8 t7 X2 C/ O* P& u4 ]- E
         NetResource->dwType == 2 ]- S  F6 z3 |$ V/ I. P+ a
         RESOURCETYPE_ANY )' s- W$ e8 M' g1 u
      {
+ A4 A3 S4 J) y( A* P6 d- ]          if ( NetResource->lpRemoteName )2 `$ S1 E3 Y8 b
         {
7 o! c7 J( X9 R  l8 d# u             CString strFullName =
% k6 T. |5 b1 ^/ B                   NetResource->lpRemoteName;+ ?# `: }# ]% k) j! {( v! X$ ]
            if ( 0 == 5 E/ `  M1 b$ j- N' ~8 I- g/ C0 v# ^
                  strFullName.Left(2).Compare("\\\\") )
$ ^# Q' I( Y4 ^9 f  d. F) e# R                   strFullName =
- W1 w" N" m7 w% k+ b" V5 T- K                      strFullName.Right(
. \3 q1 Q1 g. y3 z7 h* L                         strFullName.GetLength()-2);
" A+ X. E9 s- X$ q( U) N3 e) R( X4 B& K# r  u) _
            gethostname( szHostName, ( b' t4 L, N2 y& O
                  strlen( szHostName ) );' ^3 G7 j+ H" D- [
            host = gethostbyname(strFullName);
: K1 O( |0 B) I* {( [
/ l7 s2 U" N$ j( P+ a             if(host == NULL) continue; 9 F0 Y3 z7 U+ \! h( G$ @* d
            ptr = (struct in_addr *)
$ ?& b, C0 F0 H5 P: I( u7 a                   host->h_addr_list[0];
% v7 S: _; U! u$ D& b" y
* N- q; w' E+ J8 W9 ]             // =. 分隔开IP:211.40.35.76.          % [, J2 X# ]- w% M
            int a = ptr->S_un.S_un_b.s_b1;  // 211          , _: @" j% [5 N: U
            int b = ptr->S_un.S_un_b.s_b2;  // 40
& U$ {; J! y" N  _             int c = ptr->S_un.S_un_b.s_b3;  // 35
' t. u+ ~. L5 I             int d = ptr->S_un.S_un_b.s_b4;  // 76/ a7 l/ d* \4 h/ w  B% \

3 B; N! L& o+ ]/ T             strTemp.Format("%s -->  %d.%d.%d.%d",
- q2 p. n( p0 U7 O. o                   strFullName,a,b,c,d);$ ]9 C  D& R. L/ B* d, [/ ~( ^, t
            AfxMessageBox(strTemp);
5 ^# f9 J5 J2 Z" Q; m$ P9 ^          }2 O5 `$ B0 x9 q" O8 Z! A9 P
      }
0 n3 i9 S9 _& J4 w7 |( i* b }
! O; j  ]- P$ G; m+ H2 Z
6 r; A; c+ A8 C- v; N delete Buffer;# F9 ^. y& r9 m; z& ]% l
WNetCloseEnum( hEnum ); 7 T* Q5 x& T% v' r
}
/ }* ~5 A; ^% C5 @" u# q' e. c4 ?: }, {7 i& W* V
WSACleanup();

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