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;* ^: K* |8 i1 t
                  }" S( I* k3 Z% \  e# `, q9 m6 e

) G0 ^, K$ ]5 H* y+ @0 F                   // 修改位图 DirectBitmap
2 d1 Z. N# P+ e3 V4 ~3 p$ l7 \                   SelectObject(DirectDC,PreviousObject);7 C0 O; y" x6 E" ~

% B" t8 K$ P3 R+ V                   // 完成
8 v4 {7 [9 V% d6 F' ~( G1 V                   RetBmp=DirectBitmap;
: ~. T% R9 h. ?+ j) U6 D8 ]             }
6 z* C' s- M; a0 h3 r: s+ n             // 释放DC$ L& S8 [# X/ P/ F8 ]
            DeleteDC(DirectDC);* c6 W+ v' D6 r$ X
         }) B' j, ~8 v/ n' p& r" V
         // 释放DC4 Q" y/ J) q  y4 q& b" e' P
         DeleteDC(BufferDC);& Z2 c( l) T! L' y+ E, i# n
      }
' Z6 c8 C9 _% B! r7 w, k }9 \) D: w. c* i& U" g  Z
return RetBmp;' G" _  F5 l4 d& s/ t: l$ x
}
4 u9 B7 ~( N3 i& O/ S2 ~% s" A6 H

# h' K8 r$ b! ?$ t# F- X用法：" H0 w6 `1 C+ |# {7 X& \1 K; p: t/ a
5 h6 p! T! ], A" x  E$ W
HBITMAP hBmp2 = LoadBitmap(g_hinstance,MAKEINTRESOURCE(IDB_SAMPLEBITMAP));
' Y- n! e- y' ~5 t9 EHBITMAP hBmp = ReplaceColor(hBmp2,0xff0000,0x00ff00); // 替换蓝色为绿色
4 g9 b+ Z1 e' C' ^! G$ X  }0 `......9 x( j) }8 O# ]

0 [. V( v" d  |) ADeleteObject(hBmp2);9 ~1 g" A( f, C! s2 ~  z
DeleteObject(hBmp);! ^% v: p' T' C& \) n/ I
' y' _/ @6 b8 V7 Y2 w* T, w: p
. S% `9 k6 i/ p
19. 如何转换并保存位图
  [) ^% ?2 H- G7 Q1 V3 L7 z
( ^+ u8 f9 A  J' Y% N//********************************************************************************
5 G/ u6 g/ D- x3 R/ q//* 名称：DDBToDIB
3 E3 o! i6 o8 Z/ F# O" l; _5 L//* 作者：徐景周(jingzhou_xu@163.net)' B3 z1 z7 g; G  [9 u/ L* K/ H2 X1 G
//* 功能：设备相关转换为设备无关位图- E) N7 ]: h' \* y# R
//********************************************************************************
; \9 `5 o# |5 e: s3 [! a: I2 p1 z8 A- w, M: K* ~
HANDLE CScreenSnapDlg::DDBToDIB( CBitmap& bitmap, DWORD dwCompression /* = BI_RGB */)
& O: W: v' S) L6 Y  `6 k{  h4 D& f  o6 M# J2 i5 J* W
BITMAP             bm;
) o% A6 T( }! x) b1 w% O0 x BITMAPINFOHEADER bi;  _/ ~& }$ m; H: @, c+ a' K- d
LPBITMAPINFOHEADER  lpbi;% z, T* D; B+ ^$ s: `8 f; s/ q
DWORD             dwLen;' l1 p) c+ x; {
HANDLE             hDIB;) T6 M8 D& r8 D: C( V
HANDLE             handle;& Y: h5 x2 F7 y
HDC                   hDC;
9 I9 y# h  i1 w! s. o HPALETTE          hPal;
; R. G: y  u. B9 f% g9 ~) `! t% Y- M: V2 Y6 [9 R' G+ g
CWindowDC          dc( this );) j5 j7 V0 ~1 |
CPalette          pal;$ e: q: o, x$ W4 \+ x1 p3 s7 u
//如果支持调色板的话，则建立它: Y" Y8 J$ Q) U. h+ A. f
if( dc.GetDeviceCaps( RASTERCAPS ) & RC_PALETTE )
6 r$ t4 K5 n! p0 D* n8 @0 p {
' v3 M* P+ s) V6 c- S       UINT       nSize = sizeof(LOGPALETTE) + ( sizeof(PALETTEENTRY) * 256 );
0 `' c6 w3 s6 V  J: R4 k" R  q       LOGPALETTE* pLP    = (LOGPALETTE*)new BYTE[nSize];1 D* M, @9 e) O
      pLP->palVersion    = 0x300;
9 Q+ y! r5 T- j0 m       pLP->palNumEntries = (unsigned short)GetSystemPaletteEntries( dc, 0, 255, ' w7 u6 s9 z; ~- z% s# P' v4 n
      pLP->palPalEntry );  n  K' K5 P) U* d" ]
5 H# V9 @' ^% t( Z* Y0 [3 c
      pal.CreatePalette( pLP );
  ?$ [% ]6 P# B/ u- v5 ]2 I/ {" p' }' R7 t: [9 {/ i  Y
      //释放
      delete[] pLP;
; _1 |/ W( ?; |% n, e" r }) L6 {$ I! Q5 b8 I8 w
; c; q) y6 o* _6 b7 h. f3 E
ASSERT( bitmap.GetSafeHandle() );
. T, G0 S( V2 @  H9 T
9 A0 c# M3 F4 h* y  f
7 j$ [6 u, j6 f) R) i! ~9 j9 w3 D //不支持BI_BITFIELDS类型
  A- j3 g  ^# E1 Y2 T2 i if( dwCompression == BI_BITFIELDS )
4 H! J5 s* d( I/ a9 ?( u       return NULL;
4 ~' x3 S3 L( N9 D( }) t( r: L1 U5 [* W1 X  t/ N8 v
//如果调色板为空，则用默认调色板
# s8 `5 n2 T/ e4 A# K! {  y$ z! x( P hPal = (HPALETTE) pal.GetSafeHandle();
6 I0 w# `1 s# B* Q: r5 | if (hPal==NULL)( n* z& |0 {# Y% l8 D2 X( @
      hPal = (HPALETTE) GetStockObject(DEFAULT_PALETTE);7 U% L/ h& T/ m- P! q* W% p

, S8 W2 B) K( e1 N8 Y4 Q8 n8 A& B! m //获取位图信息
# [9 M) \8 j4 n/ {9 [& ` bitmap.GetObject(sizeof(bm),(LPSTR)&bm);
  S: p7 N$ ~8 j2 g0 L7 i1 m8 U
7 W( Q4 |3 y3 d0 |8 }7 q: t //初始化位图信息头
' r* |  O0 `( R+ S. ? bi.biSize       = sizeof(BITMAPINFOHEADER);
1 i7 r) {+ k" B- C5 U$ R bi.biWidth       = bm.bmWidth;
  ^* u; k$ ]6 d4 d bi.biHeight       = bm.bmHeight;# k" x# W( c. S; y! d$ ^
bi.biPlanes       = 1;
0 W$ C* }0 U% k3 P4 x bi.biBitCount       = (unsigned short)(bm.bmPlanes * bm.bmBitsPixel) ;
# C$ l  G; U+ ] bi.biCompression = dwCompression;2 l. ^" s6 s: D+ K
bi.biSizeImage       = 0;1 G7 d* C7 X% y% R+ z8 X
bi.biXPelsPerMeter = 0;
- X/ s* N) }1 C& v9 m# i6 }9 S bi.biYPelsPerMeter = 0;
. `7 y3 D) V: ~4 w+ a5 C* D bi.biClrUsed       = 0;- L) f* t( ]" q* X
bi.biClrImportant = 0;; f1 ^* X4 V7 m, u0 C

4 Q  O" `; ?; E: \8 n! Q6 A' ^: l/ f //计算信息头及颜色表大小
8 x+ X( d5 b7 O8 S7 C9 Z1 x int nColors = 0;. f. B% u5 z, @4 l/ }/ e. `
if(bi.biBitCount <= 8)
. h6 f, G- ?3 Y* B6 A% L  M       {
" h+ H5 W5 q2 B& M1 [       nColors = (1 << bi.biBitCount);
& W/ ?- }1 p% W       }
' s( l4 q" E4 ~1 a. ` dwLen  = bi.biSize + nColors * sizeof(RGBQUAD);
; T6 Y7 q- _4 J# r) B2 U) E6 t
; J7 Z4 @3 e* a; i0 d1 e0 w7 @( e hDC = ::GetDC(NULL);
8 e6 }, Z, J1 s( v. Z hPal = SelectPalette(hDC,hPal,FALSE);
1 H6 |3 E1 s- P. ]2 g% i RealizePalette(hDC);  p0 r' a! G# e7 y6 Y

+ W, D! H! z) q& e5 o6 v! E+ ^ //为信息头及颜色表分配内存
, p$ d, m7 ?* y& Q8 E: @' i hDIB = GlobalAlloc(GMEM_FIXED,dwLen);
9 c# P  T7 ]$ Z+ Q8 l1 R if (!hDIB){
0 S0 f% G5 W" s- F       SelectPalette(hDC,hPal,FALSE);
+ M/ @6 ?; f. S  i       ::ReleaseDC(NULL,hDC);% f# ~  u7 g2 B! O- K- }: c
      return NULL;! A4 w! V5 ~/ B6 B7 z' }
}
" D5 ^4 u7 `9 k% W) d& X% v2 E1 u
lpbi = (LPBITMAPINFOHEADER)GlobalLock(hDIB);
* [7 `  I" ~. X! J *lpbi = bi;* M1 t( ?. n. v" Q; W3 B2 [

9 s& F% J1 j9 O, Z5 D //调用 GetDIBits 计算图像大小
# j  @- T7 r+ b' a4 K/ x( ]$ s4 v GetDIBits(hDC, (HBITMAP)bitmap.GetSafeHandle(), 0L, (DWORD)bi.biHeight,; m, V& _+ @4 m. j! \/ F* w
         (LPBYTE)NULL, (LPBITMAPINFO)lpbi, (DWORD)DIB_RGB_COLORS);. g" x  x$ L: k* k

- o8 Y0 w# P+ h- B/ T bi = *lpbi;

, w' `" M" d" p4 O //图像的每一行都对齐(32bit)边界3 q" i* n% x# q) @; t. [8 Z1 a
if (bi.biSizeImage == 0){' [- R% {5 z( y4 i6 K$ }/ h
      bi.biSizeImage = ((((bi.biWidth * bi.biBitCount) + 31) & ~31) / 8)
* O: a' M+ s+ C                      * bi.biHeight;
1 C+ Q! f8 k+ J& b; U3 Z/ I       if (dwCompression != BI_RGB)& [' G, z+ s, t6 b4 R+ \, [+ z
         bi.biSizeImage = (bi.biSizeImage * 3) / 2;0 U+ |$ J' {6 Y; e# U" A* i
}
3 H$ [) D7 l' k //重新分配内存大小，以便放下所有数据
( O# N7 k1 }$ J- f dwLen += bi.biSizeImage;
+ S1 ~, \& ?3 w7 b: L+ n: h/ V8 v- U1 k handle = GlobalReAlloc(hDIB, dwLen, GMEM_MOVEABLE) ;$ J9 i. X7 i# P  c: ]  H
if (handle != NULL): u3 ?! O& y& c! w2 t
      hDIB = handle;
7 L5 Y$ @2 N" ^: _5 G* ^ else
, F6 f# z9 U# C* J       {
( @; T5 H0 ~. U3 D  X( g  o- y& j       GlobalFree(hDIB);' |  Y: N3 S4 ?) z! |* ]% n

6 a8 y( l3 O! M+ {' a! k; T+ H6 @       //重选原始调色板
0 |  W6 y9 T1 M- z/ m       SelectPalette(hDC,hPal,FALSE);
, O2 l8 w) K3 _7 i       ::ReleaseDC(NULL,hDC);( q, w3 w8 T& q2 p: C0 b6 {/ B
      return NULL;$ b" Z' y) h5 x8 p  P8 E' q/ j
      }' Q. L! z3 a* ?- y# o
//获取位图数据
0 Z: x) q* |  {, V! f" _ lpbi = (LPBITMAPINFOHEADER)hDIB;' X$ Z2 O* y9 O/ G  T/ G& N" t) o
//最终获得的DIB% K- J' W2 Q/ T' b9 K0 ?' a
BOOL bGotBits = GetDIBits( hDC, (HBITMAP)bitmap.GetSafeHandle(),( T4 V3 e# ^3 p, {/ n- U- H+ @
            0L,                   //扫描行起始处
. F( J. _8 r8 J; [             (DWORD)bi.biHeight,    //扫描行数
' @1 ~/ W6 @4 ^+ k             (LPBYTE)lpbi          //位图数据地址  B$ Z' R- |) X( Q: B  ]
            + (bi.biSize + nColors * sizeof(RGBQUAD)),% Q/ k( H" S* \& N# p$ N& D5 [* g9 Y; A
            (LPBITMAPINFO)lpbi,    //位图信息地址2 l; y, \5 B  J+ h: H
            (DWORD)DIB_RGB_COLORS);  //颜色板使用RGB
0 ]" ?+ p& L3 j# l7 Y0 m if( !bGotBits )3 f# G( S( G9 R% e: N  _
{9 j  }! Y; f+ q
      GlobalFree(hDIB);
' ?4 p( e- d* ~! F/ R       SelectPalette(hDC,hPal,FALSE);
2 u% C  _0 {* x+ d' w7 E4 X3 O       ::ReleaseDC(NULL,hDC);
& N+ m; D2 }0 F. O; O       return NULL;7 h5 V$ c4 @+ l4 z
}& Q- B+ g* `1 ^" x5 I( Y" N4 }& C7 N
SelectPalette(hDC,hPal,FALSE);
3 h9 B! Q- T& D' b ::ReleaseDC(NULL,hDC);( _/ e8 Y- z; C9 t" S# j! D
return hDIB;/ Y2 ~0 O( N& Z: I+ v: V
}5 C3 g; a# Z1 \( h% ^2 X# p1 }2 Q

+ `$ E- F, e9 k9 n4 e9 l7 u8 j/ S8 q+ k  X& |/ V% W  X
//********************************************************************************8 l% F  ?# l/ I0 S+ q
//* 名称：SaveBitmapToFile
% E; c9 W% ^" o: X" o//* 修改：徐景周(jingzhou_xu@163.net)$ }4 d; v$ F! P/ ~3 c
//* 功能：保存为位图文件. E. z! A9 S4 Q! U3 L" o
//********************************************************************************
8 x4 @0 V. L4 y& ABOOL CScreenSnapDlg::SaveBitmapToFile(HBITMAP hBitmap , CString lpFileName) % @" j: h- W) Q2 L  g4 d
{, S! w4 d4 H, l$ N1 _* t& i
HDC             hDC;                         //设备描述表  ! ]2 A8 p' d4 d" k6 I
int             iBits;                         //当前显示分辨率下每个像素所占字节数8 E' g; A) ~3 I8 }8 N
WORD          wBitCount;                      //位图中每个像素所占字节数
, v% z$ t$ o3 u' d( S$ y& h 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
2 z7 R; t' k, F                   dwBmBitsSize,
  @  `( U% }, L/ l# `: l                   dwDIBSize, dwWritten;8 A& Q6 w" c' U; r2 M
BITMAP       Bitmap;       - ^( h! t& P9 U/ g% x, `
BITMAPFILEHEADER bmfHdr;                      //位图属性结构
3 `2 e, ~- ^( X! V0 J$ J BITMAPINFOHEADER bi;                         //位图文件头结构    ! i: j/ [, V6 R# g" u0 y
LPBITMAPINFOHEADER lpbi;                      //位图信息头结构
% q' R: E+ W/ A) {4 h! k4 E; m
& e5 @8 d1 }8 g- ~/ U/ i' L2 [ 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8 ^7 \8 ]/ Y# j" ^3 K
0 j/ l- r2 r3 e" h; J; w- ]" M" j

! ^- w, c+ d7 {( p //计算位图文件每个像素所占字节数! y5 X4 H! G4 X' l
hDC = CreateDC("DISPLAY",NULL,NULL,NULL);
0 l2 O7 o  K: ?+ Q4 \: C iBits = GetDeviceCaps(hDC, BITSPIXEL) *
: z% e6 @8 m9 K# k) u GetDeviceCaps(hDC, PLANES);
4 {# [  @% ~2 D7 q1 | DeleteDC(hDC);
$ P5 d2 d/ E; p if (iBits <= 1)
7 |, r' g, o9 d9 l    wBitCount = 1;, C. i8 h& I( @/ n2 ^8 R- m
else if (iBits <= 4)3 S& M. T8 L7 Q* E) f
   wBitCount = 4;4 B7 @; |/ C8 k2 y5 e( n
else if (iBits <= 8)' i; d; z+ y, V4 }4 t6 S0 d! u
   wBitCount = 8;% c6 B5 d! v3 w- k8 T0 l
else if (iBits <= 24)' v. ]5 T- e+ M, m  S' ^9 f
   wBitCount = 24;4 \; P" L2 y& M5 \/ c' I- |( ]

( D6 i8 V/ K  I5 @8 d" U //计算调色板大小/ \9 ^+ I; d) }, U, t5 P
if (wBitCount <= 8)
& _9 U7 u* w6 S, _* w    dwPaletteSize = (1 << wBitCount) *sizeof(RGBQUAD);9 b, v; C" y) h
( K  E& Z8 @# l
//设置位图信息头结构
6 Z$ g4 o$ j$ u+ e9 m' H GetObject(hBitmap, sizeof(BITMAP), (LPSTR)&Bitmap);
+ U0 Z2 _$ \7 R bi.biSize          = sizeof(BITMAPINFOHEADER);
1 Y. L7 q" t2 ^+ C bi.biWidth          = Bitmap.bmWidth;
( w, N" B( {2 N: \. E, B$ j# `2 p bi.biHeight       = Bitmap.bmHeight;
7 ?- ?5 I$ {3 M9 J" n bi.biPlanes       = 1;( a5 ~! j8 e2 e/ t$ E6 X
bi.biBitCount       = wBitCount;
' r1 v" R  @6 I- ]! Q# G bi.biCompression    = BI_RGB;) q! h$ m. F; @4 ^$ h
bi.biSizeImage       = 0;1 J  ~+ G( Q) B: G$ Q
bi.biXPelsPerMeter    = 0;, [( Y' G9 @0 e( Q8 s: x
bi.biYPelsPerMeter    = 0;4 P6 e# q1 i5 s0 y2 g# L
bi.biClrUsed       = 0;
1 f4 r6 p4 o! p( y/ \9 X bi.biClrImportant    = 0;& U" J* D1 d1 C1 k
dwBmBitsSize = ((Bitmap.bmWidth *) K; N. E4 p4 D) E
wBitCount+31)/32)* 4
   *Bitmap.bmHeight ;0 z8 L; w) c* a0 w: ]/ m
" P' Z$ L0 ~( e( s8 ]( }9 g
//为位图内容分配内存
# m; S7 N" @) [- l$ C( f hDib  = GlobalAlloc(GHND,dwBmBitsSize+4 ~) L3 L+ @) y/ O
dwPaletteSize+sizeof(BITMAPINFOHEADER));
4 t) J0 h% A# p- ~" S+ @" Y lpbi = (LPBITMAPINFOHEADER)GlobalLock(hDib);5 `& l7 ~' @/ Y$ D6 ]: T' j1 {
*lpbi = bi;
7 \- J( S6 u' H6 T  j0 }- ?  m1 T: O: F! \7 j: S
// 处理调色板
5 ?6 ^! b* K, Q" U hPal = GetStockObject(DEFAULT_PALETTE);
* A, _0 s: k6 h# v3 t if (hPal)
3 d; t5 m1 _8 ] {
" g% U! L0 K: ]( `# r    hDC  = ::GetDC(NULL);+ K, G; j# q8 k  K, a
   hOldPal = SelectPalette(hDC, (HPALETTE)hPal, FALSE);
5 N8 e8 ]3 w7 L/ l    RealizePalette(hDC);
# `  y0 Y- E$ c1 O8 i; v( \ }
+ ], f1 w' h7 f5 T; i- y0 T( Q$ U& R8 v- I. M2 \/ j6 ]  |( S  q
  // 获取该调色板下新的像素值
# O% K+ J0 n) ^0 N; n8 g, w5 A GetDIBits(hDC, hBitmap, 0, (UINT) Bitmap.bmHeight,
2 ^0 s; E- v) ]6 B    (LPSTR)lpbi + sizeof(BITMAPINFOHEADER)+dwPaletteSize,
6 F6 T! k9 u% ]0 S9 F    (LPBITMAPINFO)lpbi, DIB_RGB_COLORS);
4 v7 c1 x' s% e4 f) F5 \" |, i( G
  //恢复调色板 7 V) u3 p$ l) c) L
if (hOldPal)0 N! Z0 Z1 @, I% e9 l: v- t
{
7 ]5 G: N+ l3 E. O5 K0 a    SelectPalette(hDC, (HPALETTE)hOldPal, TRUE);0 |# g3 @2 O( n
   RealizePalette(hDC);9 j; ?& c/ Y7 }2 I* {
   ::ReleaseDC(NULL, hDC);, ^7 a9 L/ I$ R; o( Q" W
}& I- e" J: \9 R# J: d* r5 Y
: E! R' ?! k: o- d6 V9 `: a1 F
//创建位图文件
+ ~8 M4 L/ X7 d. S  [ fh = CreateFile(lpFileName, GENERIC_WRITE,
# A1 g" O' ^( W       0, NULL, CREATE_ALWAYS,
# m; x" ?7 e# n, {       FILE_ATTRIBUTE_NORMAL | FILE_FLAG_SEQUENTIAL_SCAN, NULL);5 r4 T6 _2 O% p5 u
if (fh == INVALID_HANDLE_VALUE)2 w% Y) i; U0 C
   return FALSE;
% Y" a, n! z% a1 Y( f7 v+ O" b& _# v* K! V% u2 V" K7 W1 G; s1 ^0 D
// 设置位图文件头
# C( v# D$ i4 g bmfHdr.bfType = 0x4D42;  // "BM"
0 k% D9 C, E4 M4 |' N& ?2 J dwDIBSize = sizeof(BITMAPFILEHEADER) + sizeof(BITMAPINFOHEADER) + dwPaletteSize + dwBmBitsSize;
0 ?7 c6 d8 @( j* S& ?9 \/ |  Y bmfHdr.bfSize = dwDIBSize;/ J+ N: O7 G" q+ X9 f( u
bmfHdr.bfReserved1 = 0;
( z- {5 g0 H: h# o5 f/ E bmfHdr.bfReserved2 = 0;
# e8 Z- y6 N2 m" B$ n/ W bmfHdr.bfOffBits = (DWORD)sizeof(BITMAPFILEHEADER)
$ I* B8 ]+ W! v5 t9 I) |    + (DWORD)sizeof(BITMAPINFOHEADER)
+ d: {  U& V3 u( P- L    + dwPaletteSize;, a: A7 X* L5 D% b" I5 Y  w
( ^6 S; N5 S# O

% `! n- H! y4 s* ?; k5 l // 写入位图文件头
2 ?( z9 X. }$ Y* n, i- G: O WriteFile(fh, (LPSTR)&bmfHdr, sizeof" t* K6 M7 J6 m( i) i
(BITMAPFILEHEADER), &dwWritten, NULL);
. R% W  h1 o1 Q7 ]
  z( |1 B! q4 K6 E0 z- U // 写入位图文件其余内容* Z: G' K& X: p7 |5 I6 l1 u
WriteFile(fh, (LPSTR)lpbi, dwDIBSize,
; L1 A* l2 ^$ n9 g3 r4 @0 } &dwWritten, NULL);
' |1 |, p. Q7 q) s
2 G" K( G2 G& `. T/ o7 @  J9 ^' ] //消除内存分配
- N% k3 G# e" f4 `. q% W; l GlobalUnlock(hDib);
; f! }$ m+ M* m5 p GlobalFree(hDib);
" f) A0 U- M/ G. L9 `& }" ` CloseHandle(fh);" g* q! ?8 U% t0 @8 H

5 C; T6 l# @7 j. z# n# p return TRUE;/ k; d3 B. Z/ f  @" F" ^
}5 Z/ d! P. {2 T/ T

4 k! s( R* @. a8 l5 j' R5 @/ _+ _7 c
- V% H2 _$ V* H9 `+ E+ u$ D20. 如何获取局域网上计算机名及它们的IP地址
0 w& I5 L7 E) N  w
+ E' O- \" F, w  Z4 m$ cl 连接ws2_32.lib和 mpr.lib库& q3 V  d1 U" F. H/ W* L& T
  b$ k  [: _" P9 P- ]4 z
l #include winsock2.h2 C! q6 q2 g/ A- D* n

3 h$ [; R4 G% K/ O- y2 Y" UCString strTemp;
5 a4 _9 y4 Y( t' v- B* b/ y" ?2 }struct hostent *host;
% R6 Y6 U) r5 l! D( _  y9 H% f3 M
& s# H! U2 ~( C: p& @1 cstruct in_addr *ptr; // 检索IP地址
2 i7 s! b% T$ w! P$ z/ YDWORD dwScope = RESOURCE_CONTEXT;
5 L; D& R8 ~8 i6 t4 v+ NNETRESOURCE *NetResource = NULL;
8 {) n! E8 X8 K5 o, D8 |HANDLE hEnum;5 y4 g  R% g. y1 T6 \" Q
WNetOpenEnum( dwScope, NULL, NULL, 2 g% `5 f; M+ C/ i# ?0 N" U
         NULL, &hEnum );. w" u, u. G# ?4 r* w

) c/ z" o; K, `6 ^( }WSADATA wsaData;1 W! V7 v$ z5 n5 F6 Y$ L& c  O
WSAStartup(MAKEWORD(1,1),&wsaData);
4 B, _1 W7 p2 j' |
6 X) D- g/ C; G: N4 S' Sif ( hEnum )
! A. K2 z3 D' j6 ~( z{
# F$ g: ?# ^7 V- ^3 Q. V DWORD Count = 0xFFFFFFFF;6 k# E$ `9 n, w8 m* B! K1 q
DWORD BufferSize = 2048;& S' @* c% t1 f/ I! j" M
LPVOID Buffer = new char[2048];6 \  Q+ [7 V4 H5 i  r
WNetEnumResource( hEnum, &Count, & T0 Z* e7 e4 a8 [
      Buffer, &BufferSize );* S" B6 S( l) _) \- ]4 ]" A
NetResource = (NETRESOURCE*)Buffer;6 A4 G0 \/ z/ g
; [; V' M' J; u$ L
char szHostName[200];
6 D- |1 ^9 Y2 c unsigned int i;' n( E2 w& a3 g

3 ~5 F. W/ O  f1 L% H for ( i = 0; * @' X9 ^7 E/ n3 M" j/ Y
      i < BufferSize/sizeof(NETRESOURCE); " Z% m/ Q- a) k8 @
      i++, NetResource++ )
, j( c) a6 D) ]9 W {
0 t0 |+ ]. z+ l2 {" g8 J' {% _       if ( NetResource->dwUsage ==
9 f: ]# K( M, @" }          RESOURCEUSAGE_CONTAINER &&
' q' k- c; |. `: Y! q          NetResource->dwType == . q# w/ G1 X5 b+ C' e2 D: t
         RESOURCETYPE_ANY )
/ N) u0 z  }: M: @! A       {
: }- Q4 s. l: h- y3 ^8 q          if ( NetResource->lpRemoteName )' R# [! v; f4 K; E# u" W1 z4 U
         {
+ P8 J0 p( A' C$ R- Z             CString strFullName =
2 {9 n" M8 [# ^# P$ W  [                   NetResource->lpRemoteName;
4 x' }7 T: ]- E0 @$ b( |4 P8 K1 M             if ( 0 == * e; x; @# E* t& d0 @$ ~& I/ ^
                  strFullName.Left(2).Compare("\\\\") )
) Z: Y0 h  ~2 o( ?9 o% [7 s                   strFullName = 4 }! N! x1 Z% W) x& ?
                     strFullName.Right(
5 Q, a- j/ Q  `, }& I& A                         strFullName.GetLength()-2);& z: [) n& L- E, h
! s0 t& U. `! i2 g5 {! ]
            gethostname( szHostName,
, [; E) F" n  Q6 J& y% p7 K                   strlen( szHostName ) );
' z+ r' u7 S8 z0 h             host = gethostbyname(strFullName);' u% o6 k, u3 H1 H" ]

* e0 A8 w0 J. d, V% x             if(host == NULL) continue; 3 _$ O: i: R/ R( s, i: i
            ptr = (struct in_addr *) 4 j- Z( q8 m& p
                  host->h_addr_list[0];                   ' k6 e, E; H9 H, b
1 ^& P+ C! ?6 p! \( U, T  B
            // =. 分隔开IP:211.40.35.76.
6 L3 B! [! t) V( y# {" m% Z" l, w             int a = ptr->S_un.S_un_b.s_b1;  // 211
6 I0 V# J7 o3 T: {0 }1 D0 G             int b = ptr->S_un.S_un_b.s_b2;  // 40
; J' n2 ~% m  V- {+ y. u* c' p2 ~             int c = ptr->S_un.S_un_b.s_b3;  // 35
5 ^- z3 F4 ]1 @% z, p) L8 a             int d = ptr->S_un.S_un_b.s_b4;  // 76
( Y# w: d% p5 A+ x
' D( Y3 P/ m+ X! A             strTemp.Format("%s -->  %d.%d.%d.%d",
0 h6 g% k9 p9 j( }( m                   strFullName,a,b,c,d);
( V" z3 [+ ~! a7 O  |( i  W/ i             AfxMessageBox(strTemp);
& w+ a$ }4 m* I  H; k6 z          }
  `2 H" {3 }1 H9 P" p       }
5 n% J+ D% A. e }
; V1 ?% W3 P. o8 F. }+ l9 }; X+ F5 T# N3 T
delete Buffer;3 ~  f' H3 i5 }* ]
WNetCloseEnum( hEnum );
4 ?# C; R0 W3 {8 x}* p+ i% o) D  E8 \( i/ R9 L
% y' A9 ^% T; T5 _3 t
WSACleanup();

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