dual interface - C / C++ / MFC Discussion Boards

Re: How to notify SMB copy file finish?

TooBaya13-Sep-08 5:15

TooBaya

13-Sep-08 5:15

Thank,
I will try it.
PS. My host share is Linux and my application is running on windows.

I love my style.

Vector is losing varable data

Larry Mills Sr11-Sep-08 16:31

Larry Mills Sr

11-Sep-08 16:31

My vector is losing data when I "push_back" my class of CStrings. In "debug", before the "push_back" I can plainly see that the class has all the data in it. When I "push_back" the class into the vector, the class still has the data but the vector( in debug) does not have all the data. Does anyone know why this would happen?

VS2008 Pro, MFC.

A C++ programming language novice, but striving to learn

Re: Vector is losing varable data

David Crow11-Sep-08 17:07

David Crow

11-Sep-08 17:07

What exactly are you adding to the vector, a CString object, pointer or reference?

Have you tried using CStringArray instead?

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Re: Vector is losing varable data

CPallini11-Sep-08 21:23

CPallini

11-Sep-08 21:23

Could you please post (a piece of) your code?
Smile | :)

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Re: Vector is losing varable data

Larry Mills Sr12-Sep-08 8:05

Larry Mills Sr

12-Sep-08 8:05

Here's the heaer for for the class I'm inserting into the vector:

// WellSysData.h : header file
// Class's Used by: CWellSysDlg,

#pragma once

// CWellSysData
// Class that contains the WellSystem File Data

class CWellSysData
{

public:
// Functions:
CWellSysData(); // Default Constructor
~CWellSysData(); // Default Destructor
void CleanUp(void);

// Copy Constructor:
CWellSysData(const CWellSysData& cSource);

// Assignment operator:
CWellSysData& operator= (const CWellSysData& cSource);
CString SetPathName(CString str);

//Varables:
CString m_csOperator;
CString m_csWellName;
CString m_csTankMFG;
CString m_csTankID;
CString m_csDaysPrsent;
CString m_csTankPath;//Path to Tank: \\m_csTankMFG + \\m_csTankID
CString m_csWellPath;//Path to well: \\Operators\\m_csOperator\\m_csWellName
CString m_csExtra1; // WellPath to Well's Data File
CString m_csExtra2;

};

here's the declaration for the vector:

// WellSysDataVec.h

#pragma once

#include "WellSysData.h"
#include <string>

#include <vector>
#include <algorithm>

class CWellSysData;

using std::vector;
using std::copy;
using std::iterator;
using std::string;

class CWellSysDataVec {

public:
CWellSysDataVec(void);
~CWellSysDataVec();

// Varables:
CWellSysData m_cWellSysData;

// Setup vectors:
std::vector<CWellSysData> m_vWellSysData; // vector
std::vector<CString> m_vFileStr; // vector

// Iterators:
std::vector<CWellSysData>::iterator m_ITWellSysData;
std::vector<CString>::iterator m_ITFileStr;
//Functions:

};

Here's the call:

CString str, str2, str3, str4;
CEdit* pEdit1 = (CEdit*) GetDlgItem(IDC_WELLNAME);
str = "";
str3 = "";
str4 = "";
str4 = m_csOperator;
pEdit1->GetWindowText(str);
m_cSysData.m_csWellName = str;
str2 = str;
str3 = str;
str = "";
str2 = SetWellPath(str4,str3);
m_cSysData.m_csWellPath = str2;
str2 = "";
str2 = SetWellFileNamePath(str4,str3);
m_cSysData.m_csExtra1 = str2;// has value in it at this point
str = m_cSysData.m_csWellPath;
m_vSys.m_vWellSysData.push_back(m_cSysData);// m_vWellSysData[0].m_csExtra1 does NOT have the value in it.(ALL OTHER DATA IS THERE. m_cSysData.m_csExtra1 HAS ALL THE DATA IN IT AT THIS POINT AND AFTERWARDS.

CString CCreateWellsDlg::RetWellFileNameSys(CString str4, CString str3)
{
CString str,str1,str2;
str2 = "\\";
str1 = "c:\\Frac Tanks\\Program\\DataBases\\OperatorDB\\Operators\\";
str = str1;
str += str4;
str += str2;
str += str3;
return str;
}

CString CCreateWellsDlg::SetWellFileNamePath(CString str4, CString str3)
{
CString str, str1, str2;
str1 = "c:\\Frac Tanks\\Program\\DataBases\\OperatorDB\\Operators\\";//Operator.sdb");
// Make path for SystemDB.sdb file for each Operator:
str = str1;
str += str4;
str += "\\";
str += str3;
str += "\\";
str += "WellDataDB.sdb";// each Well has this for FracTank Listing
return str;
}

CString CCreateWellsDlg::SetWellPath(CString str4, CString str3)
{
CString str, str1, str2;
str1 = "c:\\Frac Tanks\\Program\\DataBases\\OperatorDB\\Operators\\";//Operator.sdb");
// Make path for SystemDB.sdb file for each Operator:
str = str1;
str += str4;
str += "\\";
str += str3;
return str;
}

A C++ programming language novice, but striving to learn

Re: Vector is losing varable data

CPallini12-Sep-08 8:29

CPallini

12-Sep-08 8:29

Please use code block button to surround the code snippet with <pre> tags.
Smile | :)

Re: Vector is losing varable data

Larry Mills Sr15-Sep-08 2:52

Larry Mills Sr

15-Sep-08 2:52

I found the error here:
When I initialize the copy constructor I left out the m_csExtra1 and m_csExtra2 varables so naturally it couldn't copy them!.
Thanks anyway.

A C++ programming language novice, but striving to learn

dual interface

George_George11-Sep-08 16:25

George_George

11-Sep-08 16:25

Hello everyone,

Sorry for asking this simple question. I found after some coding, I have some new understanding of the concept. Now I think dual interface means the com object inherits from IDispatch, and since IDispatch inherits from IUnknown, the COM consumer could choose to use IDispatch or IUnknown, so called dual interface.

For non-dual interface, I think it means the com object only implements interface IUnknown.

My understandings are both correct?

thanks in advance,
George