|
One popular approach to this is to sell the software with a hardware key, like Alladin Knowledge Systems[^] sells. The key is a little USB device. You application looks to see if the key is present, and refuses to run if it is not found. The keys are programmable.
BTW: I only mention Alladin because I've used their stuff. There are other manufacturers of similar devices out there.
Software Zen: delete this;
|
|
|
|
|
i have to open ADDRESS.DAT i used in a previous assignment, i put the file in the same project folder as this assignment but i keep getting an error.
The assignment is to open the ADDRESS.DAT file and output it to the screen:
the error: c:\documents and settings\lutyk7\desktop\projects\project 8-3\project 8-3\project 8-3.cpp(75) : error C2678: binary '>>' : no operator found which takes a left-hand operand of type 'std::basic_ostream<_Elem,_Traits>' (or there is no acceptable conversion)
the code:
#include "stdafx.h"<br />
#include <iostream><br />
#include <iomanip><br />
#include <fstream><br />
#include <string><br />
<br />
<br />
<br />
<br />
<br />
CWinApp theApp;<br />
<br />
using namespace std;<br />
<br />
<br />
<br />
int main()<br />
{<br />
string name, address, city, state, x; <br />
ofstream outfile;
ifstream infile;<br />
<br />
cout<<"Please enter your name: ";<br />
getline(cin, name);<br />
cout<<"Please enter your address: ";<br />
getline(cin, address);<br />
cout<<"Please enter with city: ";<br />
getline(cin, city);<br />
cout<<"Please enter your state: ";<br />
getline(cin, state);<br />
cout<<"Enter your zipcode: ";<br />
cin>>x;<br />
<br />
outfile.open("ADDRESS.DAT",ios::app);
<br />
if(outfile)<br />
{<br />
outfile<<name<<endl;<br />
outfile<<address<<endl;<br />
outfile<<city<<", "<<state<<" "<<x<<'\n'<<endl;<br />
outfile.close();
}<br />
else<br />
{<br />
cout <<"An error occurred while opening the file.\n";<br />
}<br />
<br />
infile.open("ADDRESS.DAT",ios::in);<br />
<br />
if (infile)<br />
{<br />
cout.setf(ios::fixed);<br />
cout << "The information your entered is as follows:\n"<br />
<< setprecision(1);<br />
<br />
cout << name >> endl;<br />
cout << address >> endl;<br />
cout << city >> ", " >> state >> " " >> x >> endl;<br />
cout << name << endl;<br />
cout << address << endl;<br />
cout << city << ", " << state << " " <<x<<endl;<br />
}<br />
else<br />
{<br />
cout << "An error occurred while opening the file.\n";<br />
}<br />
infile.close();<br />
return 0;<br />
}
|
|
|
|
|
klutez123 wrote: cout << name >> endl;
what the hell is this ???
with cout, use only <<
|
|
|
|
|
klutez123 wrote: C2678: binary '>>' : no operator found which takes a left-hand operand of type 'std::basic_ostream<_Elem,_Traits>' (or there is no acceptable conversion)
There's your problem, you're trying to get input from an output stream
|
|
|
|
|
Is it possible to disable usb drive(whichever) when its plugged?
There shouldn't be any access to USB Drive either write/read. All needs to be done through MFC.
suggestions are appreciated.
|
|
|
|
|
On Vista, there is a new group policy setting to disable USB drives.
|
|
|
|
|
You can disable/enable USB port by editing registry.
In order to disable USB port:
RootKey=HKEY_LOCAL_MACHINE
Key to open: "SYSTEM\\CurrentControlSet\\Services\\USBSTOR"
WriteInteger("Start",4)
Start is the name of REG_DWORD value, and 4 is the proper data for that value
In order to enable USB port:
RootKey=HKEY_LOCAL_MACHINE
Key to open: "SYSTEM\\CurrentControlSet\\Services\\USBSTOR"
WriteInteger("Start",3)
Start is the name of REG_DWORD value, and 3 is the proper data for that value
I've tried it with Windows 2000 and it worked
|
|
|
|
|
thank you for the answer. Is it possible to disable without changing registry value?
since this value can be changed by user using some registry comparision software's.
|
|
|
|
|
"Advanced User" doesn't have permission to change this registry value.
To change it your application has to be a windows service application. Only administrators can install windows service applications. You can also use simple application but it has to work with administrator privileges anyway.
The conclusion: someone who wants to change that value has to be logged on as administrator ....so he has to know the admin password.
I don't know other ways to disable USB port..
However If someone is able to change your registry values, it means that he can do whatever he wants to with the comupter because he has admin privileges, so even if you disable USB port in some other way I don't believe that there won't be any method to enable it back...
Ofcourse you can uninstall your USB ports or block them in BIOS
But again if someone smart sits near the computer there is no 100% surety that he won't break your computer protection
The only way is .... physical removing all USB ports from your "can" :]
P.S. If you find other solution how to disable USB port
please let me know
|
|
|
|
|
Same question isnt helpful for get answer
|
|
|
|
|
By mistake i had posted twice.
|
|
|
|
|
why would this
item.Format("%3f", eTable[4*i]);
lvi.mask = LVIF_IMAGE | LVIF_TEXT;
lvi.iItem = i;
lvi.iSubItem = 0;
lvi.pszText = (LPTSTR)(LPCTSTR)(item);
m_Table.InsertItem(&lvi);
make the display in the table show with 6 decimal places. Even if I change the %3f to %1f it's the same, so maybe I'm missing something. I copied and pasted the code from an article here
|
|
|
|
|
ldsdbomber wrote: make the display in the table show with 6 decimal places.
Because you didn't tell it to do any different.
item.Format("%.3f", eTable[4*i]);
"Approved Workmen Are Not Ashamed" - 2 Timothy 2:15
"Judge not by the eye but by the heart." - Native American Proverb
|
|
|
|
|
bloody hell. I'm going senile.
thanks, by the way
|
|
|
|
|
I want to transfer value of one form or frame to the other how can i do that
suppose first is the registration form and second form is frame
|
|
|
|
|
where have you tried to ?
|
|
|
|
|
Does the other frame have "setter" and "getter" methods?
"Approved Workmen Are Not Ashamed" - 2 Timothy 2:15
"Judge not by the eye but by the heart." - Native American Proverb
|
|
|
|
|
|
DavidCrow wrote: Does the other frame have "setter" and "getter" methods?
why does your text appear transparent ?
|
|
|
|
|
Your answer is hide;P
|
|
|
|
|
Transparent reply for a transparent user!
"Approved Workmen Are Not Ashamed" - 2 Timothy 2:15
"Judge not by the eye but by the heart." - Native American Proverb
|
|
|
|
|
DavidCrow wrote: Transparent reply for a transparent user!
ok, now i get it
|
|
|
|
|
In this period we see many transparent user(David) I guess they are student!?
|
|
|
|
|
Oh I guess its a response but Im not sure
|
|
|
|
|
Thats good style and deserves a 5!
Failure is not an option - it's built right in.
|
|
|
|