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分享SetSystemTime函数总是返回0
void ChangeSystemTime(HWND hwndEdit,ULONG ulTime)
{
FILETIME ftNew;
SYSTEMTIME stOld, stNew;
LARGE_INTEGER li;
GetLocalTime(&stOld);
stNew.wYear = 1900;
stNew.wMonth = 1;
stNew.wDay = 1;
stNew.wHour = 0;
stNew.wMinute = 0;
stNew.wSecond = 0;
stNew.wMilliseconds = 0;
SystemTimeToFileTime(&stNew,&ftNew);
li = *(LARGE_INTEGER *)&ftNew;
li.QuadPart += (LONGLONG)10000000 * ulTime;
ftNew = *(FILETIME*) &li;
FileTimeToSystemTime(&ftNew,&stNew); // 执行到这里时,stNew已经是2016年xxx正确时间了
if(SetSystemTime(&stNew)) // 然而这里返回0，系统时间也没更改
{
MessageBeep(0);
GetLocalTime(&stNew);
}
else
EditPrintf(hwndEdit,TEXT("Could NOT set new date and time."));
}
刚用GetLastError看了下是 1314， a required privilege is not held by the client 我没更改时间的特权，但是我手动右下角可以改啊，这种系统的小问题 ，哪位小哥能 给点意见
{
FILETIME ftNew;
SYSTEMTIME stOld, stNew;
LARGE_INTEGER li;
GetLocalTime(&stOld);
stNew.wYear = 1900;
stNew.wMonth = 1;
stNew.wDay = 1;
stNew.wHour = 0;
stNew.wMinute = 0;
stNew.wSecond = 0;
stNew.wMilliseconds = 0;
SystemTimeToFileTime(&stNew,&ftNew);
li = *(LARGE_INTEGER *)&ftNew;
li.QuadPart += (LONGLONG)10000000 * ulTime;
ftNew = *(FILETIME*) &li;
FileTimeToSystemTime(&ftNew,&stNew); // 执行到这里时,stNew已经是2016年xxx正确时间了
if(SetSystemTime(&stNew)) // 然而这里返回0，系统时间也没更改
{
MessageBeep(0);
GetLocalTime(&stNew);
}
else
EditPrintf(hwndEdit,TEXT("Could NOT set new date and time."));
}
刚用GetLastError看了下是 1314， a required privilege is not held by the client 我没更改时间的特权，但是我手动右下角可以改啊，这种系统的小问题 ，哪位小哥能 给点意见
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AeNet 2016-02-18
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版主 这么晚了还没睡呀。
zwfgdlc 2016-02-18
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程序要提权，要SE_SYSTEMTIME_NAME权限
paschen 版主 2016-02-18
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需要权限
https://msdn.microsoft.com/en-us/library/windows/desktop/ms724942(v=vs.85).aspx
你看下以管理员身份运行程序是否可以
赵4老师 2016-02-18
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请牢记：这辈子永远不要手动修改服务器的系统时间！
AeNet 2016-02-18
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这是我自己对话框的连接记录
Your selected IP : 129.6.15.30
WSAStartup WinSock 2.0
Socket 960 created.
Connected to 129.6.15.30.
Recv Failed 10038
Recv Failed 10038
Total time is -858993460 second
刚找到了 在两处Recv出错了 10038，在使用一个无效的sock。但是我创建sock时 有检查机制，没弹出Invalid_socket呀
case IDC_2:
if (iResult = WSAStartup(MAKEWORD(2, 2), &wsaData))
{
EditW(hEdit, TEXT("Startup Error # %i \n"), iResult);
//MessageBox(Dlg, TEXT("WSAStartUp Failed"), TEXT("Error"), MB_OK);
return TRUE;
}
EditW(hEdit, TEXT("WSAStartup %hs \n"), wsaData.szDescription); // %hs 是ASSCI码字符串输出
ZeroMemory(&hint, sizeof(hint));
hint.ai_family = AF_UNSPEC;
hint.ai_protocol = IPPROTO_TCP;
hint.ai_socktype = SOCK_STREAM;
iResult = getaddrinfo(szIP, DEFAULT_PORT, &hint, &Result); // 这里将ip 端口放入了sockaddr/sockaddr_in结构里了 ，并且将ip转成网络字节
if (iResult != 0)
{
EditW(hEdit, TEXT("Get Address Info Failed : %s \r\n"), GetLastError());
WSACleanup();
return TRUE;
}
sock = socket(Result->ai_family, Result->ai_socktype, Result->ai_protocol);
if (sock == INVALID_SOCKET)
{
EditW(hEdit, TEXT("Socket creation error #%i.\r\n"), WSAGetLastError());
freeaddrinfo(Result);
WSACleanup();
}
EditW(hEdit, TEXT("Socket %i created.\r\n"), sock);
if (SOCKET_ERROR == WSAAsyncSelect(sock, Dlg, WM_SOCK_NOTIFY, FD_CONNECT | FD_READ))
{
EditW(hEdit, TEXT("WSAAsyncSelect error #%i. \r\n"), WSAGetLastError());
closesocket(sock);
WSACleanup();
return TRUE;
}
size = connect(sock, Result->ai_addr, Result->ai_addrlen); // ai_addr 是 sockaddr结构
if (iResult == SOCKET_ERROR) {
EditW(hEdit,TEXT("connect function failed with error: %ld\n"), WSAGetLastError());
iResult = closesocket(sock);
if (iResult == SOCKET_ERROR)
EditW(hEdit,L"closesocket function failed with error: %ld\n", WSAGetLastError());
WSACleanup();
return 1;
}
SetTimer(Dlg, 1, 1000, NULL);
SetWindowText(hButton, TEXT("Disconect"));
SetWindowLong(hButton, GWL_ID, IDC_CANCEL);
return TRUE;AeNet 2016-02-18
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Your selected IP : 129.6.15.30
WSAStartup WinSock 2.0
Socket 960 created.
Connected to 129.6.15.30.
Recv Failed 10038
Recv Failed 10038
Total time is -858993460 second
刚找到了 是两处Recv出错了 10038，在使用一个无效的sock。但是我创建sock时 有检查机制，没弹出Invalid_socket呀
case IDC_2:
if (iResult = WSAStartup(MAKEWORD(2, 2), &wsaData))
{
EditW(hEdit, TEXT("Startup Error # %i \n"), iResult);
//MessageBox(Dlg, TEXT("WSAStartUp Failed"), TEXT("Error"), MB_OK);
return TRUE;
}
EditW(hEdit, TEXT("WSAStartup %hs \n"), wsaData.szDescription); // %hs 是ASSCI码字符串输出
ZeroMemory(&hint, sizeof(hint));
hint.ai_family = AF_UNSPEC;
hint.ai_protocol = IPPROTO_TCP;
hint.ai_socktype = SOCK_STREAM;
iResult = getaddrinfo(szIP, DEFAULT_PORT, &hint, &Result); // 这里将ip 端口放入了sockaddr/sockaddr_in结构里了 ，并且将ip转成网络字节
if (iResult != 0)
{
EditW(hEdit, TEXT("Get Address Info Failed : %s \r\n"), GetLastError());
WSACleanup();
return TRUE;
}
sock = socket(Result->ai_family, Result->ai_socktype, Result->ai_protocol);
if (sock == INVALID_SOCKET)
{
EditW(hEdit, TEXT("Socket creation error #%i.\r\n"), WSAGetLastError());
freeaddrinfo(Result);
WSACleanup();
}
EditW(hEdit, TEXT("Socket %i created.\r\n"), sock);
if (SOCKET_ERROR == WSAAsyncSelect(sock, Dlg, WM_SOCK_NOTIFY, FD_CONNECT | FD_READ))
{
EditW(hEdit, TEXT("WSAAsyncSelect error #%i. \r\n"), WSAGetLastError());
closesocket(sock);
WSACleanup();
return TRUE;
}
size = connect(sock, Result->ai_addr, Result->ai_addrlen); // ai_addr 是 sockaddr结构
if (iResult == SOCKET_ERROR) {
EditW(hEdit,TEXT("connect function failed with error: %ld\n"), WSAGetLastError());
iResult = closesocket(sock);
if (iResult == SOCKET_ERROR)
EditW(hEdit,L"closesocket function failed with error: %ld\n", WSAGetLastError());
WSACleanup();
return 1;
}
SetTimer(Dlg, 1, 1000, NULL);
SetWindowText(hButton, TEXT("Disconect"));
SetWindowLong(hButton, GWL_ID, IDC_CANCEL);
return TRUE;
yhlzxq 2016-02-18
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身份运行程序是否可以
paschen 版主 2016-02-18
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但 刚刚又遇到一个 让我十分 匪夷所思的事情。
case WM_SOCK_NOTIFY:
wEvent = WSAGETSELECTEVENT(lParam);
wError = WSAGETSELECTERROR(lParam);
switch (wEvent)
{
case FD_CONNECT:
if (wError)
{
EditW(hEdit, TEXT("\nConnect error #%i. \r\n"), wError);
SendMessage(Dlg, WM_COMMAND, IDC_CANCEL, NULL);
return TRUE;
}
EditW(hEdit, TEXT("\nConnected to %hs. \r\n"), szIP);
recv(sock, (char*)&time, 4, MSG_PEEK); // 这里 time没变3435973836
return TRUE;
case FD_READ:
KillTimer(Dlg, 1);
if (wError)
{
EditW(hEdit, TEXT("\nFD_READ error #%i."), wError);
SendMessage(Dlg, WM_COMMAND, IDC_CANCEL, 0);
return TRUE;
}
recv(sock, (char*)&time, 4, 0); // 这里数值没变3435973836
time = ntohl(time);
EditW(hEdit, TEXT("\nTotal time is %d second\n"), time);
iResult = SetTime(time);
if (!iResult)
{
EditW(hEdit, TEXT("Set System Time Failed! #%d"), iResult);
}
return TRUE;AeNet 2016-02-18
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但 刚刚又遇到一个 让我十分 匪夷所思的事情。
case WM_SOCK_NOTIFY:
wEvent = WSAGETSELECTEVENT(lParam);
wError = WSAGETSELECTERROR(lParam);
switch (wEvent)
{
case FD_CONNECT:
if (wError)
{
EditW(hEdit, TEXT("\nConnect error #%i. \r\n"), wError);
SendMessage(Dlg, WM_COMMAND, IDC_CANCEL, NULL);
return TRUE;
}
EditW(hEdit, TEXT("\nConnected to %hs. \r\n"), szIP);
recv(sock, (char*)&time, 4, MSG_PEEK); // 这里 time没变3435973836
return TRUE;
case FD_READ:
KillTimer(Dlg, 1);
if (wError)
{
EditW(hEdit, TEXT("\nFD_READ error #%i."), wError);
SendMessage(Dlg, WM_COMMAND, IDC_CANCEL, 0);
return TRUE;
}
recv(sock, (char*)&time, 4, 0); // 这里数值没变3435973836
time = ntohl(time);
EditW(hEdit, TEXT("\nTotal time is %d second\n"), time);
iResult = SetTime(time);
if (!iResult)
{
EditW(hEdit, TEXT("Set System Time Failed! #%d"), iResult);
}
return TRUE;
