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Lets say I have a text file named text1.txt, with a few lines of text. I want to include the file as resource in the .exe, so that no one can read the file. Then I want to be able to use it just as if it was an external file, such as std::ifstream fin('text1.txt'). What steps need to be taken so that that line of code std::ifstream fin('text1,txt'), will work for an internal resource?
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It depends on which path you choose. If you want to be able to use it exactly as a file (i.e. open with CreateFile or std::ifstream) it would be a lot of work; don't even go down that road. The easiest way would be to write your own stream class that reads from resources; for this task I'd use the Boost.Iostreams[^] library.
Steve
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whenwood wrote: I want to include the file as resource in the .exe, so that no one can read the file.
I believe much like dialogs, menus, toolbars and string resources file resources could easily be read using Visual Studio. Just open the binary with Visual Studio as a resource. If your intent is to ultimately store this information privately then encrypt it in a file. Trying to write info back to a file within the binary is error prone.
I'd love to help, but unfortunatley I have prior commitments monitoring the length of my grass. :Andrew Bleakley:
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You can use, sure, import resource command in resource editor and choose the file as external file; the resulting binary will now contain a resource that can be accessed using FindResource, LoadResource, LockResource etc. (Perhaps is even better to use a separate dll only for this purpose).
On the other hand, ifstream (basic_ifstream) have contructor only with a filename. Maybe basic_istream will do it, passing in constructor a basic_streambuf for resource and probably false for 2nd argument, _Isstd. I think implementing a derived class from basic_streambuf to use with the text resource file can do it.
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hi all
i want to find the difference between two times
say example now i have started a application and after 1 min i want to see the difference
how to do it
shall i call GetSystemTime twice .
please help me with an example
Thanks in Advance
abhi
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It depends on how accurate you need the measurement to be. You can call time() twice and compare the values, if 1-second resolution is OK. Or call GetTickCount() if the system timer is accurate enough.
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The best solution is the following
DWORD Currtime;
DWORD SecondTime;
DWord Diff;
CurrTime=timeGetTime();
// Wait for some time here.. say about 10 seconds...
Sleep (10000);
SecondTime=timeGetTime();
now,
Second Time - Currtime will be equal to 10000.
i think its clear enough...
haribabu
(impossible to understand)
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Hi,
I use a customed treeview which class is derived from CView and I use a CtreeCtrl object to populate the tree programmatically. Now I would like to have a copy or a "replication" of my tree loaded into another CtreeCtrl which container is a dialog box.
Please do you know if is there a solution to do this with few coding?
Many thanks for your help.
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As a guess, and assuming that the CtreeCtrl has a copy constructor, you may be able to use the CreateDialogParam function to pass the address of the current one to the dialog as the lParam of the WM_INITDIALOG message and then assign it (copy construct it) to the copy. Of course if you can do that then you may be able to just add a member to the dialog class and assign it there, during construction. Another option would be to find away to separate it so that a function call from the view or the dialog so that either one can access it, but I do not know if that is possible.
Like I said, I am just guessing here because I am out of practice and have not done it myself.
INTP
"Program testing can be used to show the presence of bugs, but never to show their absence."Edsger Dijkstra
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Hi all. I've found out how to keep a function from repeating the same string over and over. But i have another challenge. I was wondering if i could pick out certain chars etc. So i decided to play with strstr. But i have 2 errors. Here a sample code of the time function im using.
<br />
#include <time.h><br />
#include <windows.h><br />
#include <fstream><br />
using namespace std;<br />
<br />
int main (){<br />
char olddate[9] = {0}, oldtime[9] = {0};<br />
while(1){<br />
Sleep(300);<br />
char date [9];<br />
char time [9];<br />
_strdate(date);<br />
_strtime(time);<br />
bool fNewDate = strcmp(date, olddate) != 0;<br />
bool fNewTime = strcmp(time, oldtime) != 0;<br />
if(fNewDate || fNewTime){<br />
ofstream file1;<br />
file1.open("time.txt",ios::app);<br />
if(strstr(fNewDate,"1/13/07"){<br />
file1 << "[Date]: " << date << endl;<br />
strcpy(olddate, date);<br />
}<br />
if(strstr(fNewTime,"5:30"){<br />
file1 << "[Time]: " << time << endl;<br />
strcpy(oldtime, time);<br />
}<br />
file1.close();<br />
}<br />
}<br />
return 0;<br />
}<br />
The idea is to match a string like "1/13/07" with another string from the time function and save to the file. But instead i get 2 errors.
<br />
error C2664: 'strstr' : cannot convert parameter 1 from 'bool' to 'const char *'<br />
Conversion from integral type to pointer type requires reinterpret_cast, C-style cast or function-style cast<br />
Any suggestions?
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You are passing 'fNewDate' and 'fNewTime', which are bools, to 'strstr' at two different places in your code, instead of a string.
INTP
"Program testing can be used to show the presence of bugs, but never to show their absence."Edsger Dijkstra
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From the MSDN
char *strstr( const char *string, const char *strCharSet ); But your value is bool fNewTime
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Hi,
I need a control where I can view 32x32 icons to the left side (32bit color depth if possible) along with some information placed to the right of the icons (to make it clearer, I just need something like a listview control in report mode with 32x32 icons instead of the 16x16 icons), is it possible to have 32x32 icons in a listview control in the report mode or do I have to use subclassing? In case that I have to use subclassing, which control do you think I should use? ListView, ListBox, TreeView or some other control? Or finally do you think I should write my own control from scratch?
Thanks in advance,
Wal
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You can use whatever size image list you want in a list control. 32x32 and 16x16 are the most-commonly-used sizes, but there's no rule that you have to stick to those sizes.
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How can I set Attached or Detached second monitor in win32?
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Call GetSystemMetrix() and pass SM_CXVIRTUALSCREEN/SM_CYVIRTUALSCREEN as the parameter. The call would return the size of the virtual screen of all monitors.
Best,
Jun
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i compile in debug mode & there is no run-time or exception!
But when i compile in release mode there is __non_rtti_object exception!
how can i find which pointer is null that cause this exception in release mode?
Best Regards,
M.J.M.
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How can I find the corresponding country of an IP address?
modified 8-Mar-17 3:51am.
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I am unable to obtain a pointer to the interface INetConnectionCommonUi.
I have called INetConnectionManager's and INetConnectionManagerEvents's QueryInterface with the IID_INetConnectionConnectUi. No go.
I have tried using ::CoCreateInstance using CLSID_ConnectionManager and IID_INetConnectionConnectUi and cannot instantiate this INetConnectionCommonUi.
In both instances, E_NOINTERFACE is returned.
These GUIDs and interfaces are found in Visual Studio 2005's netcon.h header file.
Has anyone had success implementing these interfaces and, if so, how?
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hi all
can u plz tell me what is this line for
int *(*table())[30];
and if its an array or a variable how can i access it ?
thanks
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At first glance, it appears to be an array of function pointers that return a pointer to an int. The array may belong to the return type, however.
"Approved Workmen Are Not Ashamed" - 2 Timothy 2:15
"Judge not by the eye but by the heart." - Native American Proverb
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This is ultimately a function declaration.
It states that the function table() will return a pointer to an array of 30 pointers to int.
Here is an example using an array of 3 pointers to int:
int *(*oops())[3];<br />
<br />
int main(int argc, char* argv[])<br />
{<br />
int *x[3];<br />
int *(*z)[3];<br />
z = &x;<br />
<br />
int *a[3];<br />
int *(*b)[3];<br />
b = &a;<br />
b = oops();<br />
<br />
return 0;<br />
}<br />
<br />
int *(*oops())[3]<br />
{<br />
int m = 0;<br />
int n = 1;<br />
int p = 2;<br />
int *a[3];<br />
a[0] = &m;<br />
a[1] = &n;<br />
a[2] = &p;<br />
return &a;<br />
}
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Very good
The oops function needs a modification though: All the internal stack variable need to be changed to static or the address of the returned array and all the pointer it contains will be invalid after leaving the function.
int *(*oops())[3]
{
static int m = 0;
static int n = 1;
static int p = 2;
static int *a[3];
a[0] = &m;
a[1] = &n;
a[2] = &p;
return &a;
}
int main()
{
int* (*t)[3] = oops();
for( int i=0; i<3; ++i )
std::cout << *(*t)[i] << std::endl;
return 0;
}
INTP
"Program testing can be used to show the presence of bugs, but never to show their absence."Edsger Dijkstra
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