C++ :: Simple System Management Console Application - Polymorphic?

Mar 16, 2014

I'm building a simple system management console application. I've abstracted the console "Menu" and derived from it a "WelcomeMenu" class with public inheritance.

The problem is that when instantiating a Menu* object and assigning it a new WelcomeMenu...I'm still not able to use WelcomeMenu's "ShowWelcomeMessage() with the Menu* object. Instead, I get "error: Class 'Menu' has no member function call 'ShowWelcomeMessage().' Which is true, but I thought a pointer-to-Menu object should be able to use the public methods of derived classes without casting in this case. Code follows.

// Menu and WelcomeMenu Classes
#ifndef MENU_H
#define MENU_H

#include <ctime>
#include <iostream>
#include <string>

[Code] .....

I get a compiler error when running this simple program:

#include <iostream>
#include <ctime>
#include "Utilities.h"
#include "Menu.h"
using namespace std;

[Code]....

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Create an a simple Payroll Management Application using the concept of Binary Tree. The program will allow you to add, sort, view, search record. The application have also the capability to save and retrieve data in a file.

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my only concern is this

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my C++ console application should be like a command prompt. There are "command lines" to execute in the command prompt.Here are my main prompts for spotlight:

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Now, I manage to do the tasks for Encode, View, and Search..But unfortunately, not in Update..I've been working this for a week already..

#include "stdafx.h"
#include "iostream"
#include "string"
#include "fstream"
using namespace std; //to omit the std
}

[code]....

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// simple game menu
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using namespace std;
class Game {
public:
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[Code] .....

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Mar 23, 2013

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Aug 1, 2013

I am stuck in visual studio 2010 file I/O ... i placed file1 file2 using the following program under VS2010/projects/projectname/file, file1 and also in debug also once......I am actually using cmd line arguments in debug mode

Code:
// feof files.cpp : Defines the entry point for the console application.
//

#include "stdafx.h"
#include<stdio.h>
#include<stdlib.h>
#include<conio.h>
int main(int argc, char* argv[])

[Code] ....

I dont think in C++ forum the printf will do any problem...when i run the program it says "cannot open source file" and a window appears saying"Debug assertion failed"....and other details such as Expressionstream!=NULL).perror

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[Code]....

l want to be able to add more student records and display the student with the top score.

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Jan 5, 2014

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I get the following errors:

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error C2447: "{" missing function header

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Jan 19, 2013

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Jul 12, 2014

I'm having some trouble working out how to read the console output in realtime, here's my code:

The button which starts the console application:

private void HELPRUN_Click(object sender, EventArgs e)
{
this.Output.Text = "";

[Code]....

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look into the below code

Process P1 = Process.Start(@"C:WINDOWSsystem32cmd.exe");
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P1.StartInfo.RedirectStandardOutput = true;
P1.StartInfo.UseShellExecute = false;
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Oct 11, 2013

I'm trying to write a program that passes Windows messages back and forth from another program that controls a laboratory instrument. I was able to write a program that successfully passes instructions, as evidenced by the instrument doing what I tell it. However, I am having trouble getting a return status from the instrument. The manual instructs the following:

// demo code, etc.
// send message to the instrument operating software here...
SendMessage(hwnd, WM_COPYDATA, tag, (LPARAM) &cd)

Either a completion message or return data is returned. Remote commands ReturnStatus, ReturnTiming, and ReturnData return data. In either case, data is received through an asynchronous windows message inside Win32 COPYDATASTRUCT type data packet.For example, a typical OnCopyData window callback is shown below, where the string data retrieved is finally stored into a Microsoft CString object. Note the use of variable replyTag, discussed above, which is used to isolate the correct windows message returned.

BOOL CUserDlg::OnCopyData(CWnd* pWnd, COPYDATASTRUCT* cd) {
….
if (cd->dwData == replyTag) {
/* String pointing to status */
CString retStatus = (char*) cd->lpData;
}
….
}

I can't tell if my problem is in generating the replyTag, getting the HWND to my own console window, or the actual receiving part of the code.

When setting the replyTag, the manual instructs: UINT replyTag = RegisterWindowMessage(“SOFTMaxProReplyMsg”);. However, I have to put an "L" in front of the string or I get a data type error (can't convert const char* to LPCWSTR).

When setting a HWND for myself, the manual instructs: HWND MyWnd = GetSafeHwnd().

That produces an error because GetSafeHwnd is a function of the Cwnd class, and I don't have a Cwnd. I have replaced it with HWND MyWnd = GetConsoleWindow();

When listening for the reply message, the manual instructs what I quoted above. However, I again don't have a Cwnd. I therefore simply used

if (cd.dwData == replyTag) {
CString retStatus = (char*) cd.lpData;
}

The above if statement always evaluates false, and the cd.lpdata contains the message that I had sent out instead of a reply message. How to get a reply using my console application. Here is the full code of my function:

Code:
#include "stdafx.h"
#include<iostream>
#include<vector>
#include<string>
#include<afxwin.h>
using namespace std;
void SendCommand(string command) {
// Get tags to identify the receiving and sending messages

[code]....

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interface ICalcView {
string firstN { get; set; }
string firstN {get; set;}
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[Code] ....

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I have been struggling to read a certificate in windows store from C++ DLL, but its not happening. from console application I can but when same code built as a DLL and tried to access from a separate console application. I think its not going to windows store to read the cert.

pCertContext = CertFindCertificateInStore((HCERTSTORE)*pCertStore, X509_ASN_ENCODING | PKCS_7_ASN_ENCODING, 0, CERT_FIND_ISSUER_OF, operator PCCERT_CONTEXT(), pCertContext);
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if (Error == 0)
LINFO << "
Signtuare is valid
";
else
LINFO << std::hex << Error << '
' << "GetLastErrorStdStr=
" << GetLastErrorStdStr();

it returns 80092004 GetLastErrorStdStr= C a n n o t f i n d o b j e c.

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Enter source image path:
Enter destination folder:
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Take care of following things:

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This is The error i am getting could not deduce template argument for 'std::basic_istream<char,_Traits> &&' from 'int'

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//
#include "stdafx.h"
#include<fstream>
#include<iostream>
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[Code] .....

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