自学教程：C++ wcslen函数代码示例

intmain(int argc, char *argv[]){  register char *filename;  register wchar_t *t;  size_t buflen = 512;  wchar_t *p = malloc(buflen*sizeof(wchar_t));  size_t len;  FILE *fp;  int ch, rval;  setlocale(LC_ALL, "");  bindtextdomain(PACKAGE, LOCALEDIR);  textdomain(PACKAGE);  while ((ch = getopt(argc, argv, "")) != -1)    switch(ch) {    case '?':    default:      usage();    }  argc -= optind;  argv += optind;  fp = stdin;  filename = "stdin";  rval = 0;  do {    if (*argv) {      if ((fp = fopen(*argv, "r")) == NULL) {	warn("cannot open %s", *argv );	rval = 1;	++argv;	continue;      }      filename = *argv++;    }    while (fgetws(p, buflen, fp)) {      len = wcslen(p);      /* This is my hack from setpwnam.c -janl */      while (p[len-1] != '/n' && !feof(fp)) {	/* Extend input buffer if it failed getting the whole line */	/* So now we double the buffer size */	buflen *= 2;	p = realloc(p, buflen*sizeof(wchar_t));	if (p == NULL)	  err(1, _("unable to allocate bufferspace"));	/* And fill the rest of the buffer */	if (fgetws(&p[len], buflen/2, fp) == NULL) break;	len = wcslen(p);	/* That was a lot of work for nothing.  Gimme perl! */      }      t = p + len - 1 - (*(p+len-1)=='/r' || *(p+len-1)=='/n');      for ( ; t >= p; --t)	if (*t != 0)	  putwchar(*t);      putwchar('/n');    }    fflush(fp);    if (ferror(fp)) {      warn("%s", filename);      rval = 1;    }    if (fclose(fp))      rval = 1;  } while(*argv);  exit(rval);}

//.........这里部分代码省略.........						pair<LPCTSTR, UINT> checkdata = (*(pair<LPCTSTR, UINT>*)ExMessageBox::GetUserData());						GetClientRect(hWnd, &rc);			iClientHeightBefore = rc.bottom - rc.top;			iClientWidthBefore = rc.right - rc.left;						GetWindowRect(hWnd, &rc);			iWindowWidthBefore = rc.right - rc.left;			iWindowHeightBefore = rc.bottom - rc.top;						// Create checkbox (resized and moved later)			HWND check = CreateWindow(L"BUTTON", checkdata.first, WS_CHILD | WS_VISIBLE | WS_TABSTOP | BS_VCENTER | BS_CHECKBOX,			                          CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT,			                          hWnd, (HMENU)2025, GetModuleHandle(NULL), NULL			                         );			                         			// Assume checked by default			SendMessage(check, BM_SETCHECK, checkdata.second, 0);			ExMessageBox::SetUserData((void*)checkdata.second); 						// Apply default font			const int cyMenuSize = GetSystemMetrics(SM_CYMENUSIZE);			const int cxMenuSize = GetSystemMetrics(SM_CXMENUSIZE);			const HFONT hNewFont = (HFONT)GetStockObject(DEFAULT_GUI_FONT);			HFONT hOldFont;			SIZE size;						SendMessage(check, WM_SETFONT, (WPARAM)hNewFont, (LPARAM)TRUE);						// Get the size of the checkbox			HDC hdc = GetDC(check);			hOldFont = (HFONT)SelectObject(hdc, GetStockObject(DEFAULT_GUI_FONT));			GetTextExtentPoint32(hdc, checkdata.first, wcslen(checkdata.first), &size);			SelectObject(hdc, hOldFont);			ReleaseDC(check, hdc);						// Checkbox dimensions			int iCheckboxWidth = cxMenuSize + size.cx + 1;			int iCheckboxHeight = (cyMenuSize > size.cy) ? cyMenuSize : size.cy;						// Vista+ has a different kind of layout altogether			if (WinUtil::getOsMajor() >= 6)			{				// Align checkbox with buttons (aproximately)				int iCheckboxTop = int(iClientHeightBefore - (iCheckboxHeight * 1.70));				MoveWindow(check, 5, iCheckboxTop, iCheckboxWidth, iCheckboxHeight, FALSE);								// Resize and re-center dialog				int iWindowWidthAfter = iWindowWidthBefore + iCheckboxWidth;				int iWindowLeftAfter = rc.left + (iWindowWidthBefore - iWindowWidthAfter) / 2;				MoveWindow(hWnd, iWindowLeftAfter, rc.top, iWindowWidthAfter, iWindowHeightBefore, TRUE);								// Go through the buttons and move them				while ((current = FindWindowEx(hWnd, current, L"BUTTON", NULL)) != NULL)				{					if (current == check) continue;										RECT rc;					GetWindowRect(current, &rc);					ScreenToClient(hWnd, &rc);					MoveWindow(current, rc.left + iCheckboxWidth, rc.top, rc.right - rc.left, rc.bottom - rc.top, FALSE);				}			}			else			{

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