还是不行啊
哪你看看着代码：
#include <windows.h>
#include <wininet.h>
#include <process.h>
#include "upresource.h"
#pragma comment(lib,"wininet.lib")
#pragma comment(lib,"libcmt.lib")
#define WM_USER_CHECKFILES (WM_USER + 1)
#define WM_USER_GETFILES
(WM_USER + 2)
// Information for FTP download
#define FTPSERVER TEXT ("ftp.)
#define DIRECTORY TEXT (")
#define TEMPLATE
TEXT ("UDyyyymm.TXT")
// Structures used for storing filenames and contents
typedef struct
{
TCHAR * szFilename ;
char
* szContents ;
}
FILEINFO ;
typedef struct
{
int
iNum ;
FILEINFO info[1] ;
}
FILELIST ;
// Structure used for second thread
typedef struct
{
BOOL bContinue ;
HWND hwnd ;
}
PARAMS ;
// Declarations of all functions in program
LRESULT CALLBACK WndProc (HWND, UINT, WPARAM, LPARAM) ;
BOOL
CALLBACK DlgProc (HWND, UINT, WPARAM, LPARAM) ;
VOID
FtpThread (PVOID) ;
VOID
ButtonSwitch (HWND, HWND, TCHAR *) ;
FILELIST *
GetFileList (VOID) ;
int
Compare (const FILEINFO *, const FILEINFO *) ;
// A couple globals
HINSTANCE hInst ;
TCHAR
szAppName[] = TEXT ("UpdDemo") ;
int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance,
PSTR szCmdLine, int iCmdShow)
{
HWND
hwnd ;
MSG
msg ;
WNDCLASS
wndclass ;
hInst = hInstance ;
wndclass.style
= 0 ;
wndclass.lpfnWndProc
= WndProc ;
wndclass.cbClsExtra
= 0 ;
wndclass.cbWndExtra
= 0 ;
wndclass.hInstance
= hInstance ;
wndclass.hIcon
= LoadIcon (NULL, IDI_APPLICATION) ;
wndclass.hCursor
= NULL ;
wndclass.hbrBackground = GetStockObject (WHITE_BRUSH) ;
wndclass.lpszMenuName
= NULL ;
wndclass.lpszClassName = szAppName ;
if (!RegisterClass (&wndclass))
{
MessageBox (NULL, TEXT ("This program requires Windows NT!"),
szAppName, MB_ICONERROR) ;
return 0 ;
}
hwnd = CreateWindow (szAppName, TEXT ("Update Demo with Anonymous FTP"),
WS_OVERLAPPEDWINDOW | WS_VSCROLL,
CW_USEDEFAULT, CW_USEDEFAULT,
CW_USEDEFAULT, CW_USEDEFAULT,
NULL, NULL, hInstance, NULL) ;
ShowWindow (hwnd, iCmdShow) ;
UpdateWindow (hwnd) ;
// After window is displayed, check if the latest file exists
SendMessage (hwnd, WM_USER_CHECKFILES, 0, 0) ;
while (GetMessage (&msg, NULL, 0, 0))
{
TranslateMessage (&msg) ;
DispatchMessage (&msg) ;
}
return msg.wParam ;
}
LRESULT CALLBACK WndProc (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
static FILELIST * plist ;
static int
cxClient, cyClient, cxChar, cyChar ;
HDC
hdc ;
int
i ;
PAINTSTRUCT
ps ;
SCROLLINFO
si ;
SYSTEMTIME
st ;
TCHAR
szFilename [MAX_PATH] ;
switch (message)
{
case WM_CREATE:
cxChar = LOWORD (GetDialogBaseUnits ()) ;
cyChar = HIWORD (GetDialogBaseUnits ()) ;
return 0 ;
case WM_SIZE:
cxClient = LOWORD (lParam) ;
cyClient = HIWORD (lParam) ;
si.cbSize = sizeof (SCROLLINFO) ;
si.fMask
= SIF_RANGE | SIF_PAGE ;
si.nMin
= 0 ;
si.nMax
= plist ? plist->iNum - 1 : 0 ;
si.nPage
= cyClient / cyChar ;
SetScrollInfo (hwnd, SB_VERT, &si, TRUE) ;
return 0 ;
case WM_VSCROLL:
si.cbSize = sizeof (SCROLLINFO) ;
si.fMask
= SIF_POS | SIF_RANGE | SIF_PAGE ;
GetScrollInfo (hwnd, SB_VERT, &si) ;
switch (LOWORD (wParam))
{
case SB_LINEDOWN:
si.nPos += 1 ;
break ;
case SB_LINEUP:
si.nPos -= 1 ;
break ;
case SB_PAGEDOWN:
si.nPos += si.nPage ;
break ;
case SB_PAGEUP:
si.nPos -= si.nPage ;
break ;
case SB_THUMBPOSITION:
si.nPos = HIWORD (wParam) ; break ;
default:
return 0 ;
}
si.fMask = SIF_POS ;
SetScrollInfo (hwnd, SB_VERT, &si, TRUE) ;
InvalidateRect (hwnd, NULL, TRUE) ;
return 0 ;
case WM_USER_CHECKFILES:
// Get the system date & form filename from year and month
GetSystemTime (&st) ;
wsprintf (szFilename, TEXT ("UD%04i%02i.TXT"), st.wYear, st.wMonth) ;
// Check if the file exists; if so, read all the files
if (GetFileAttributes (szFilename) != (DWORD) -1)
{
SendMessage (hwnd, WM_USER_GETFILES, 0, 0) ;
return 0 ;
}
// Otherwise, get files from Internet.
// But first check so we don't try copy files to a CD-ROM!
if (GetDriveType (NULL) == DRIVE_CDROM)
{
MessageBox (hwnd, TEXT ("Cannot run this program from CD-ROM!"),
szAppName, MB_OK | MB_ICONEXCLAMATION) ;
return 0 ;
}
// Ask user if an Internet connection is desired
if (IDYES == MessageBox (hwnd,
TEXT ("Update information from Internet?"),
szAppName, MB_YESNO | MB_ICONQUESTION))
// Invoke dialog box
DialogBox (hInst, szAppName, hwnd, DlgProc) ;
// Update display
SendMessage (hwnd, WM_USER_GETFILES, 0, 0) ;
return 0 ;
case WM_USER_GETFILES:
SetCursor (LoadCursor (NULL, IDC_WAIT)) ;
ShowCursor (TRUE) ;
// Read in all the disk files
plist = GetFileList () ;
ShowCursor (FALSE) ;
SetCursor (LoadCursor (NULL, IDC_ARROW)) ;
// Simulate a WM_SIZE message to alter scroll bar & repaint
SendMessage (hwnd, WM_SIZE, 0, MAKELONG (cxClient, cyClient)) ;
InvalidateRect (hwnd, NULL, TRUE) ;
return 0 ;
case WM_PAINT:
hdc = BeginPaint (hwnd, &ps) ;
SetTextAlign (hdc, TA_UPDATECP) ;
si.cbSize = sizeof (SCROLLINFO) ;
si.fMask
= SIF_POS ;
GetScrollInfo (hwnd, SB_VERT, &si) ;
if (plist)
{
for (i = 0 ; i < plist->iNum ; i++)
{
MoveToEx (hdc, cxChar, (i - si.nPos) * cyChar, NULL) ;
TextOut
(hdc, 0, 0, plist->info[i].szFilename,
lstrlen (plist->info[i].szFilename)) ;
TextOut
(hdc, 0, 0, TEXT (": "), 2) ;
TextOutA (hdc, 0, 0, plist->info[i].szContents,
strlen (plist->info[i].szContents)) ;
}
}
EndPaint (hwnd, &ps) ;
return 0 ;
case WM_DESTROY:
PostQuitMessage (0) ;
return 0 ;
}
return DefWindowProc (hwnd, message, wParam, lParam) ;
}
BOOL CALLBACK DlgProc (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
static PARAMS params ;
switch (message)
{
case WM_INITDIALOG:
params.bContinue = TRUE ;
params.hwnd = hwnd ;
_beginthread (FtpThread, 0, ¶ms) ;
return TRUE ;
case WM_COMMAND:
switch (LOWORD (wParam))
{
case IDCANCEL:
// button for user to abort download
params.bContinue = FALSE ;
return TRUE ;
case IDOK:
// button to make dialog box go away
EndDialog (hwnd, 0) ;
return TRUE ;
}
}
return FALSE ;
}
/*----------------------------------------------------------------------
FtpThread: Reads files from FTP server and copies them to local disk
----------------------------------------------------------------------*/
void FtpThread (PVOID parg)
{
BOOL
bSuccess ;
HINTERNET
hIntSession, hFtpSession, hFind ;
HWND
hwndStatus, hwndButton ;
PARAMS
* pparams ;
TCHAR
szBuffer [64] ;
WIN32_FIND_DATA finddata ;
pparams = parg ;
hwndStatus = GetDlgItem (pparams->hwnd, IDC_STATUS) ;
hwndButton = GetDlgItem (pparams->hwnd, IDCANCEL) ;
// Open an internet session
hIntSession = InternetOpen (szAppName, INTERNET_OPEN_TYPE_PRECONFIG,
NULL, NULL, INTERNET_FLAG_ASYNC) ;
if (hIntSession == NULL)
{
wsprintf (szBuffer, TEXT ("InternetOpen error %i"), GetLastError ()) ;
ButtonSwitch (hwndStatus, hwndButton, szBuffer) ;
_endthread () ;
}
SetWindowText (hwndStatus, TEXT ("Internet session opened...")) ;
// Check if user has pressed Cancel
if (!pparams->bContinue)
{
InternetCloseHandle (hIntSession) ;
ButtonSwitch (hwndStatus, hwndButton, NULL) ;
_endthread () ;
}
// Open an FTP session.
hFtpSession = InternetConnect (hIntSession, FTPSERVER,
INTERNET_DEFAULT_FTP_PORT,
NULL, NULL, INTERNET_SERVICE_FTP, 0, 0) ;
if (hFtpSession == NULL)
{
InternetCloseHandle (hIntSession) ;
wsprintf (szBuffer, TEXT ("InternetConnect error %i"),
GetLastError ()) ;
ButtonSwitch (hwndStatus, hwndButton, szBuffer) ;
_endthread () ;
}
SetWindowText (hwndStatus, TEXT ("FTP Session opened...")) ;
// Check if user has pressed Cancel
if (!pparams->bContinue)
{
InternetCloseHandle (hFtpSession) ;
InternetCloseHandle (hIntSession) ;
ButtonSwitch (hwndStatus, hwndButton, NULL) ;
_endthread () ;
}
// Set the directory
bSuccess = FtpSetCurrentDirectory (hFtpSession, DIRECTORY) ;
if (!bSuccess)
{
InternetCloseHandle (hFtpSession) ;
InternetCloseHandle (hIntSession) ;
wsprintf (szBuffer, TEXT ("Cannot set directory to %s"),
DIRECTORY) ;
ButtonSwitch (hwndStatus, hwndButton, szBuffer) ;
_endthread () ;
}
SetWindowText (hwndStatus, TEXT ("Directory found...")) ;
// Check if user has pressed Cancel
if (!pparams->bContinue)
{
InternetCloseHandle (hFtpSession) ;
InternetCloseHandle (hIntSession) ;
ButtonSwitch (hwndStatus, hwndButton, NULL) ;
_endthread () ;
}
// Get the first file fitting the template
hFind = FtpFindFirstFile (hFtpSession, TEMPLATE,
&finddata, 0, 0) ;
if (hFind == NULL)
{
InternetCloseHandle (hFtpSession) ;
InternetCloseHandle (hIntSession) ;
ButtonSwitch (hwndStatus, hwndButton, TEXT ("Cannot find files")) ;
_endthread () ;
}
do
{
// Check if user has pressed Cancel
if (!pparams->bContinue)
{
InternetCloseHandle (hFind) ;
InternetCloseHandle (hFtpSession) ;
InternetCloseHandle (hIntSession) ;
ButtonSwitch (hwndStatus, hwndButton, NULL) ;
_endthread () ;
}
// Copy file from internet to local hard disk, but fail
// if the file already exists locally
wsprintf (szBuffer, TEXT ("Reading file %s..."), finddata.cFileName) ;
SetWindowText (hwndStatus, szBuffer) ;
FtpGetFile (hFtpSession,
finddata.cFileName, finddata.cFileName, TRUE,
FILE_ATTRIBUTE_NORMAL, FTP_TRANSFER_TYPE_BINARY, 0) ;
}
while (InternetFindNextFile (hFind, &finddata)) ;
InternetCloseHandle (hFind) ;
InternetCloseHandle (hFtpSession) ;
InternetCloseHandle (hIntSession) ;
ButtonSwitch (hwndStatus, hwndButton, TEXT ("Internet Download Complete"));
}
/*-----------------------------------------------------------------------
ButtonSwitch:
Displays final status message and changes Cancel to OK
-----------------------------------------------------------------------*/
VOID ButtonSwitch (HWND hwndStatus, HWND hwndButton, TCHAR * szText)
{
if (szText)
SetWindowText (hwndStatus, szText) ;
else
SetWindowText (hwndStatus, TEXT ("Internet Session Cancelled")) ;
SetWindowText (hwndButton, TEXT ("OK")) ;
SetWindowLong (hwndButton, GWL_ID, IDOK) ;
}
/*-----------------------------------------------------------------------
GetFileList: Reads files from disk and saves their names and contents
-----------------------------------------------------------------------*/
FILELIST * GetFileList (void)
{
DWORD
dwRead ;
FILELIST
* plist ;
HANDLE
hFile, hFind ;
int
iSize, iNum
;
WIN32_FIND_DATA finddata ;
hFind = FindFirstFile (TEMPLATE, &finddata) ;
if (hFind == INVALID_HANDLE_VALUE)
return NULL ;
plist = NULL ;
iNum
= 0 ;
do
{
// Open the file and get the size
hFile = CreateFile (finddata.cFileName, GENERIC_READ, FILE_SHARE_READ,
NULL, OPEN_EXISTING, 0, NULL) ;
if (hFile == INVALID_HANDLE_VALUE)
continue ;
iSize = GetFileSize (hFile, NULL) ;
if (iSize == (DWORD) -1)
{
CloseHandle (hFile) ;
continue ;
}
// Realloc the FILELIST structure for a new entry
plist = realloc (plist, sizeof (FILELIST) + iNum * sizeof (FILEINFO));
// Allocate space and save the filename
plist->info[iNum].szFilename = malloc (lstrlen (finddata.cFileName) +
sizeof (TCHAR)) ;
lstrcpy (plist->info[iNum].szFilename, finddata.cFileName) ;
// Allocate space and save the contents
plist->info[iNum].szContents = malloc (iSize + 1) ;
ReadFile (hFile, plist->info[iNum].szContents, iSize, &dwRead, NULL);
plist->info[iNum].szContents[iSize] = 0 ;
CloseHandle (hFile) ;
iNum ++ ;
}
while (FindNextFile (hFind, &finddata)) ;
FindClose (hFind) ;
// Sort the files by filename
qsort (plist->info, iNum, sizeof (FILEINFO), Compare) ;
plist->iNum = iNum ;
return plist ;
}
/*----------------------------
Compare function for qsort
----------------------------*/
int Compare (const FILEINFO * pinfo1, const FILEINFO * pinfo2)
{
return lstrcmp (pinfo2->szFilename, pinfo1->szFilename) ;
}
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
upresource.h:
#define IDC_STATUS
40001
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
upddemo.rc:
#include "upresource.h"
#include "afxres.h"
UPDDEMO DIALOG DISCARDABLE
20, 20, 186, 95
STYLE DS_MODALFRAME | WS_POPUP | WS_CAPTION | WS_SYSMENU
CAPTION "Internet Download"
FONT 8, "MS Sans Serif"
BEGIN
PUSHBUTTON
"Cancel",IDCANCEL,69,74,50,14
CTEXT
"",IDC_STATUS,7,29,172,21
END
