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thank you all for information,
but in realise mode I have "debug error", and it's like that it can't debug my project ????????
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Mkhitar_Sargsyan wrote: but in realise mode I have "debug error", and it's like that it can't debug my project ???????? You've been instructed no less than a half dozen times how to fix it.
"One man's wage rise is another man's price increase." - Harold Wilson
"Fireproof doesn't mean the fire will never come. It means when the fire comes that you will be able to withstand it." - Michael Simmons
"Show me a community that obeys the Ten Commandments and I'll show you a less crowded prison system." - Anonymous
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thank you very much
I found out it.
it occurred that's why exe file gets its values from another file, where debug wrote nothing
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Hi All
I want to write a program in C++ to get hash key of windows account's password .
thank for any help or refrence
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OK, go ahead and write it. But don't expect anyone here to help you break through security.
Use the best guess
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I supprised when I see this :
"break through security" , it is not true!!!
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Then please explain exactly what you are trying to do.
Use the best guess
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it is good , but it works offline!
I want to write a program that get the hash key , when windows is boot
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#include <iostream>
#include<ctime>
#include<cstdlib>
using namespace std;
/* here array board[][] is declared to be a global variable*/
int board[9][9];
/* this function returns a random number in the specified range(excluding the upper limit)
in this program,returns random number between 0 and 8 */
int randrange(int low,int high)
{
return rand()%(high-low)+low;
}
bool check(int num,int row,int col)
{
int i;
// checks if number is repeated in that row or not
for(i=0;i<9;i++)
{
if(board[row][i]==num)
{
return false;
}
}
// checks if number is repeated in that column or not
for(i=0;i<9;i++)
{
if(board[i][col]==num)
{
return false;
}
}
return true;
}
/* this function checks if that particular element in the array 'board' is already assigned
a value or not */
bool non_empty(int row,int col)
{
//0 is default value
if(board[row][col]==0)
return true;
// true indicates unassigned element
else return false;
// false indicates an element which is already assigned a value
}
// a class handiling all the inintialisation part of the board
class initialisation
{
private:
int num,i,j,row,col;
bool flag=true;
public:
void _initialisation();
void display();
};
void initialisation::_initialisation()
{
// in the for loop below ,numbers from 1 to 9 are assigned to the array board[][]
//the row and column index are chosen at random
for(num=1;num<=9;num++)
{
flag=true;
for(i=0;i<9;i++)
{
do
{
row=randrange(0,9);
col=randrange(0,9);
/* in this if statement we perform calls to two functions
non_empty(row,col) returns true only if that element in the
array board is not assigned a value earlier,if not returns false.
check(num,row,col) returns true only if that particular number 'num' is not
repeated in that row and column */
if(non_empty(row,col)&&(check(num,row,col)==true))
{
flag=true;
board[row][col]=num;
}
else
flag=false;
} while(flag==false);
}
}
}
//this method displays the elements in array board[][]
void initialisation::display()
{
for(i=0;i<9;i++)
{
for(j=0;j<9;j++)
cout<
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1. Actually ask a question.
2. Use code tags when posting code.
< p r e> //without the spaces
your code
< / p r e> //without the spaces
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I notice that you don't have any graphics code.
Is this a DirectX question ???
Show us your drawing code.
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So what do you see when single-stepping through the code using the debugger? What is board being populated with? This is not to be confused with what you want it to be populated with. What are non_empty() and check() returning?
"One man's wage rise is another man's price increase." - Harold Wilson
"Fireproof doesn't mean the fire will never come. It means when the fire comes that you will be able to withstand it." - Michael Simmons
"Show me a community that obeys the Ten Commandments and I'll show you a less crowded prison system." - Anonymous
modified 13-Aug-13 10:46am.
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The problem of your code (excluding minor fixes) is that the filling algorithm is probably wrong (it cannot complete the board). I suppose you should apply a backtracking algorithm.
Veni, vidi, vici.
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Hello guys. I have this example which uses a design pattern. I don't know which design pattern is this.
I have this ClassMain , ClassParent , ClassChildOne and ClassChildTwo . ClassMain contains an array of type ClassParent, and stores the references of the two derived classes. Here is it how do I do it.
class CClassMain
{
#define MAX_COUNT 2
CClassParent arrParent[MAX_COUNT];
public void AddRef(CClassParent* ptr, int nIndex)
{
arrParent[nIndex] = ptr;
}
}
class CClassParent
{
static CClassMain* ptrMain;
public CClassParent() { ptrMain = new CClassMain;}
public void AddRef(int nIndex) {
ptrMain->AddRef(this, nIndex)
}
}
class CClassChildOne : CClassParent
{
public CClassChildOne
{
CClassParent::AddRef(1);
}
}
class CClassChildTwo : CClassParent
{
public CClassChildTwo()
{
CClassParent::AddRef(2);
}
}
The design pattern states that if I have to add new functionality (classes), it is really is easy now. I will simply increase the MAX_COUNT in CClassMain and derive the newly added class from CClassParent .
So what is the name of this design pattern and how do I study more about it specifically (and design patterns in general). Thanks for any info.
This world is going to explode due to international politics, SOON.
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I wouldn't say this to be the clean version of any of the popular patterns and without the context (sorrounding code) I would say this code isn't designed well and overcomplicated for no reason. This is typical among programmers who learn programming by reading pattern books. Many of the best programmers I know learnt programming without any patterns. By becoming a good programmer you instinctly find out and start using some patterns wihtout actually knowing the pattern and/or its name. I don't say its a bad thing to learn about patterns but trying to use them as golden hammers like many pattern-learners do is ridiculous. A programmer can be a very good programmer without knowledge of patterns and another one can be terribly bad coder with a lot of pattern knowledge. Knowing the patterns is good only when it comes to communication between programmers, its easier to say "visitor pattern" then describing how would you build up the classes and how would you call their methods... Don't overuse them, you become a better programmer if you try solving problems with simple methods and its OK to find it out later that your solution is very similar to one of the patterns. I've already worked on some codebases created by pattern magicians. This kind of terrible work can be one of the hardest to understand bloatcode on earth.
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AmbiguousName wrote: it is really is easy now.
It isn't easy. It is fragile and hard to maintain. And I seriously doubt it will work in the vast majority of contexts. At best it seems to be a singleton registration service (which is pointless) and at worst it is simply broken.
AmbiguousName wrote: So what is the name of this design pattern
I doubt this code represents a generally accepted pattern.
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I'm using opensource library (exprtk http://partow.net/programming/exprtk/[^]) on qt 5.1.0 64 bit with visual studio 2012. But I'm taking c1128 error. Full output of error: C1128: number of sections exceeded object file format limit : compile with /bigobj
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The error message tells you exactly how to fix the problem...
Steve
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how to get DeviceInstanceId using Scard*API?
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Hi,
I want to use event object for synchronization between dialogs.
I am performing an operation to run a command from the command line. Now while the command is running I am displaying a dialog without Ok and Cancel buttons, to show the progress of the operation. Now I want to display a message to the user on completion of the operation. I want to use an event object for the same.
How to synchronize both operation. When operation is going on, user should be displayed with the dialog and when the operation completes, it should end the dialog and display a message to the user.
Can anybody help me with any sample code how to do the same.
Any help will be appreciated.
Regards,
Mbatra
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One way of doing this is to have your command-line program send window messages to your dialog box to update the status and tell it when the command-line program is finished.
Look up the SendMessage API and use it to send a custom window message. Also look up the WM_USER constant and how it is used.
The difficult we do right away...
...the impossible takes slightly longer.
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There are several possible solutions to this problem on windows but maybe the simplest that came to my mind when I read your post is the following:
This task has nothing to do with command lines. Its an unimportant detail. You have your program running in its own process and you are launching another process with CreateProcess(). As a result you have a process handle to the other process. You can use this handle to wait for the termination of the other process for infinitely long time, for a specified amount of time (timeout), or you can poll this handle if the specified timeout value is zero using the WaitForSingleObject() or WaitForMultipleObjects() functions with the process handle. I would go by periodically (1-10 times per second) polling the handle from the gui thread, you can do that easily for example by setting up a WM_TIMER message for this purpose. Depending on your goals you can stop waiting for the running program anytime by stopping the WM_TIMER message and closing the handle and the dialog.
Since you have to be able to close the dialog yourself programmatically you can not use the MessageBox api that closes itself as a result of user input. You have to use your own modal or modeless dialog for this purpose. If you don't want the user to be able to interact with the other windows of your program while waiting then you need a modal dialog. If you don't want the user to be able to close your dialog by pressing X or by pressing alt+f4 then you have to handle the WM_CLOSE message by simply doing nothing (by not calling DestroyWindow(), EndDialog() or something similar).
So:
- launch the program with CreateProcess() and store the process handle for later use. Don't forget to close the handle with CloseHandle() when you no longer need it!
- At the same time you launch the process show your dialog and setup the WM_TIMER.
- In your the WM_TIMER message handler to you call WaitForSingleObject(process_handle, 0) and if the return value is WAIT_OBJECT_0 then the child process has finished so its okay to close the dialog.
At any time in your program you can stop waiting for example if you put some extra buttons to your dialog like "Stop waiting and let the child process run", or "Stop waiting and terminate child process"
Often there is no need for multithreading in case of multiprocessing. I think even the progress update is possible to solve from your WM_TIMER message handler, the question is the method we use to transfer this small piece of data (the progress) from the child process to the parent. The first two solutions that came to my mind:
- PostMessage / SendMessage mentioned by R. Andrew, I recommend PostMessage whenever possible to avoid unnecessary blocking of the child process. For larger messages use WM_COPYDATA.
You have to pass the HWND value to the child process in order to be able to do this for example on commandline or as an env var.
- dumbass solution: writing the progress into a specified file (either as text or binary integer) and from your wm_timer you always open the file, read out the stuff and show it.
- nonblocking pipe
- redirection of the output (stdout and/or stderr) of the child process, can be async or multithreaded
The correct implementation of communication between the two processes is probably the most complicated thing. Is the code of the child process yours, are you allowed to modify it or you have to parse the output of an existing prog to gather the progress?
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