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thanks for reply..
can u give me a piece of code where it shows it has written something in destructor...?
i wnat to knwo what we have to write in a destructor of base & derived class when base class destructor is virtual?
are we have to write any thing is any one of destructor?
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you write a destructor to deallocate te memory allocated dynamically during the object's life (from construction to now - destruction). the fact a destructor is virtual or not is a matter of inheritence and doesn't affect what you write in the destructor body.
and to call the destructor, you don't have to do anything much. an object is automattically when the execution goes out of the scope of the object.
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SAY if my destructor body is empty & I call delete p.it will call destructor & ultimately it will destroy the object of base & derived irrespective of empty body of destructor....
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Here is a very simple illustration on how they work:
class Base
{
public:
Base() { cout << "Base::Base()" << endl; }
virtual ~Base() { cout << "Base::~Base()" << endl; }
};
class Derived : public Base
{
public:
Derived() { cout << "Derived::Derived()" << endl; }
virtual ~Derived() { cout << "Derived::~Derived()" << endl; }
};
void main()
{
Base b;
Derived d;
}
Output:
Base::Base()
Base::Base()
Derived::Derived()
Derived::~Derived()
Base::~Base()
Base::~Base()
If you decide to become a software engineer, you are signing up to have a 1/2" piece of silicon tell you exactly how stupid you really are for 8 hours a day, 5 days a week
Zac
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hello
i am working with automation in vc++6.0 .Can anyone tell me about how can i transfer bitmap images in the MS word using automation from my VC++6.0 application.If someone have sample application send me .I have already done this thing with the MS Excel .Now need in MSWord .Plz help me on this topic.
Sukhpreet
sukhpreet
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I could execute 'C' code for serial port communication on DOS based environment. I need to do it using VC++. I am completely new to it. How should I start?
Inderpreet
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There are some usefull articles and classes here[^]
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I_arora wrote: I could execute 'C' code for serial port communication on DOS based environment. I need to do it using VC++. I am completely new to it. How should I start?
In addition to cedric.. i would like to recommend you CSerialPort class listed there!.. it is one of best freely available class for Serial Post Communitcation
"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow
cheers,
Alok Gupta
VC Forum Q&A :- I/ IV
Support CRY- Child Re
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I_arora wrote: I need to do it using VC++.
See here.
"Money talks. When my money starts to talk, I get a bill to shut it up." - Frank
"Judge not by the eye but by the heart." - Native American Proverb
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It depends how hard you want to work!
If you want to work really hard, learn C++. Sure, it has long-term benefits, but it's a lot of work!
If you don't want to work so hard, use the C code you already know, and hack it to work under Windows. Start by making a console application, copy in your old code, fix compiler errors, etc. It's not pretty, but it may work!
Where you are likely to hit a problem is when you directly access I/O ports, but you can use a "port access" library. I have personally used inpOut32.dll http://www.logix4u.net/inpout32.htm[^]- works like a dream. This library provides inp32 and out32 functions, which allow you to directly access ports, as in DOS or Win9x.
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all i want is to search in column 1 not 0 how ? in this code !!!! please help !!!
this code find an item in column 0 !
void CMyList::OnOK()
{
UpdateData();
CWaitCursor wait; // Display a wait cursor
int x = m_list.GetItemCount();
for (int j = 0; j < x; j++) // For each item in the list
{
CString strWord;
strWord = m_list.GetItemText(j, 0); // Get the word
strWord.TrimLeft(); // Remove leading spaces
strWord.TrimRight(); // Remove trailing spaces
// Overwrite the old word with the new trimmed word
m_list.SetItemText(j, 0, strWord);
}
//----------------------------------------------------------------------------------//
CString sName = _T("Name");
m_name.GetWindowText(sName);
LVFINDINFO stInfo = {0};
stInfo.flags = LVFI_STRING;
stInfo.psz = sName;
int nItem = m_list.FindItem( &stInfo );
if( nItem != -1 )
{
// the item is in the list control
CString sSecondColumnText = m_list.GetItemText( nItem, 1 );
// set the text to the second edit box
m_rezult.SetWindowText( sSecondColumnText );
}
}
how ?
please an example !!!!
please help !
i will wait your answer because i don t now how ,i don t have no ideea !
Bravoone
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LV_FINDINFO lfi = { 0 };
lfi.flags = LVFI_STRING;
lfi.psz = "Test"
int iItem = ListView_FindItem (m_List, -1, &lfi);
if (-1 == iItem)
{\\error}
else
{
//success
}
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I remind you : m_list (CListCtrl), m_name (CEdit),m_rezult(CEdit)
this code is not working ! (in my code)
i need more help !
please !!!
Bravoone
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Did you see my previous reply?its working for colunms 1,2,3,...
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this is not good i thing! i have try!
how can i : in my code ?
LV_FINDINFO lfi = { 0 };
lfi.flags = LVFI_STRING;
lfi.psz = "Test"
int iItem = ListView_FindItem (m_List, -1, &lfi);
if (-1 == iItem)
{\\error}
else
{
//success
}
///////////////////////////////////////////////////////////////////////
my code:
//////////////////////////////////////////////////////////////////////
void CMyList::OnOK()
{
UpdateData();
CWaitCursor wait; // Display a wait cursor
int x = m_list.GetItemCount();
for (int j = 0; j < x; j++) // For each item in the list
{
CString strWord;
strWord = m_list.GetItemText(j, 0); // Get the word
strWord.TrimLeft(); // Remove leading spaces
strWord.TrimRight(); // Remove trailing spaces
// Overwrite the old word with the new trimmed word
m_list.SetItemText(j, 0, strWord);
}
//----------------------------------------------------------------------------------//
CString sName ;
m_name.GetWindowText(sName);
LVFINDINFO stInfo = {0};
stInfo.flags = LVFI_STRING;
stInfo.psz = sName;
int nItem = m_list.FindItem( &stInfo );
if( nItem != -1 )
{
// the item is in the list control
CString sSecondColumnText = m_list.GetItemText( nItem, 1 );
// set the text to the second edit box
m_rezult.SetWindowText( sSecondColumnText );
}
}
Bravoone
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When i wanted to send you this code i tested this code
whats problem?
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Please explain how ?
i have try this and is the same thing i have just done for column 0!
CString sName;
m_name.GetWindowText(sName);
LV_FINDINFO lfi = { 0 };
lfi.flags = LVFI_STRING;
lfi.psz = sName;
int iItem = ListView_FindItem (m_list2, -1, &lfi);
if (-1 == iItem)
{ AfxMessageBox("Invalid ");
return;
}
else
{
// the item is in the list control
CString sSecondColumnText = m_list2.GetItemText( iItem, 1 );
// set the text to the second edit box
m_rezult.SetWindowText( sSecondColumnText );
}
Bravoone
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When you used from a loop for read columns what happen Is your listctrl type report
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yes my list type is report !
Please help me with my code !
Bravoone
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Hi all,
I found that using CRectTracker we can move the Drawn ellipse,circle and Rectangle.
Let me know any code snippet for CRectTracker. please help me out.
Uday kiran
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uday kiran janaswamy wrote: CRectTracker
See Here[^]
Somethings seem HARD to do, until we know how to do them.
 _AnShUmAn_
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