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You haven't overloaded the = operator, needed for the second version. This is a simple implementation:
string operator=(const string &s)<br />
{<br />
delete p;<br />
p = new char[strlen(s.p) + 1];<br />
strcpy(p, s.p);<br />
return *this;<br />
}
I also recommend to rename your class to myString or something like that.
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Thanks for both of you for replying. ![Rose | [Rose]](https://codeproject.global.ssl.fastly.net/script/Forums/Images/rose.gif)
Nice talking to you. 
-- modified at 3:05 Tuesday 6th September, 2005
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prefer string& operator=(const string& s) as operator = to allow the user to cascading the calls...
TOXCCT >>> GEII power
[toxcct][VisualCalc]
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I have problem opening the class wizard, as it will show an error message. After clicking ok, i wont be able to add function, variable etc. from the class wizard.
error msg:
Parsing error: Expected "="
Input Line: "if (m_hCloas == INVALID HANDLE VALUE)"
Anyone knows what has gone wrong?
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I think you have deleted the script generated by the application wizard(Basically a C++ comment lines(Statrs with /// which is used by the App wizard).
Try to look at the similar code in other files or create a temporary project and copy those scripts.. I have to be carefull while doing this.. I don't think there any other options...
Wish you better luck 
" Action without vision is only passing time,
Vision without action is merely day dreaming,
But vision with action can change the world "
- Words from Nelson Mandela
Thanks & Regards,
Gopalakrishnan
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I think the code line would be:
if (m_hCloas == INVALID_HANDLE_VALUE)
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thanks, i found out the problem, it lies inside the constructor. the problem is solved after i removed the 'if section' code.
does it mean i cant have an if statement inside constructor???
CTAMADlg::CTAMADlg(CWnd* pParent /*=NULL*/)
: CDialog(CTAMADlg::IDD, pParent)
{
//{{AFX_DATA_INIT(CTAMADlg)
m_hDevice = INVALID_HANDLE_VALUE;
m_hClose = INVALID_HANDLE_VALUE;
m_hClose = CreateEvent (NULL, TRUE, FALSE, NULL);
if ( m_hClose == INVALID_HANDLE_VALUE )
{
MessageBox("Thread event error!","Error",MB_OK);
}
//}}AFX_DATA_INIT
m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}
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Hi,
I am looking for the solution/guide line to convert text data into the following file format,
1.PDF
2.HTML
3.GIF
4.JPEG
5.3gp
6.DOC
7.RTF
one important point here is that all these conversion needs to be following UNICODE. There are different library available for each of the format but they are either very complex or does not support UNICODE.
does any one has simple solution for this?
Thanks.
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struct stTst
{
stTst(){p=NULL;}
~stTst(){
if (p!=NULL) {
delete p;
}
}
int i;
int j;
char c;
int *p;
};
void CTestdeleteDlg::OnButton1()
{
int k=123;
stTst *p=new stTst[10];
p->p=&k;
delete[] p;
}
-- modified at 1:01 Tuesday 6th September, 2005
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followait wrote:
stTst *p=new stTst[10];
Here, you are creating 10 objects of the class.
If you need only one object, then:
stTst* p = new stTst;
...
delete p;
If you really need 10 objects, then you need to access them through a subscript, like:
stTst* p = new stTst[10];
p[0]->p = &k; //etc
p[1]->p = &k2;
...
To delete all the objects:
delete[] p;
this is this.
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It's my careless, it should be delete[] p, but still have a error.
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You are allocating k in the stack and then using delete on it inside the destructor of stTst. If stTst is going to assume its p member points to a heap-allocated int and that it can delete the pointer, you'd need to change your code to:
void CTestdeleteDlg::OnButton1()
{
int* pK = new int;
*pK = 123;
stTst* p = new stTst[10];
p->p = pK;
delete[] p;
}
--
jlr
http://jlamas.blogspot.com/[^]
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Hi,
int k=123;
stTst *p=new stTst[10];
p->p=&k;
delete[] p;
look k is allocated in the stack memory of the function OnButton1(). You are assigning the address of k to a class member variable and deleting it through dynamic deletion option. You can do that.
You cannot dynamically delete a variable which is allocated in the stack.
So you supposed not to delete the
" Action without vision is only passing time,
Vision without action is merely day dreaming,
But vision with action can change the world "
- Words from Nelson Mandela
Thanks & Regards,
Gopalakrishnan
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i want to communicate with a device through LPT port, how can i do this using Win32(sdk) programming, plz help me.
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how to install windows NT services?
d
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how to install windows NT service int cmd ?
d
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use [servicepath.exe] -service on commandline
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prasad_som wrote:
use [servicepath.exe] -service on commandline
Sorry for correcting you, No executable sample generated through wizard's contain implementation for -service command line.
You required api call to CreateService to install service in local Service manager database
"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
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It will definitely work. I was answering "how to install NT serive:
And answer posted by me is right.I've used it in one of my project
Sorry for replying late to your comment. But some how i'm not getting mails from CP, even if i select checkbox "Notify me by email if..."
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prasad_som wrote:
It will definitely work. I was answering "how to install NT serive:
---Sorry comment deleted--------------------------
actually the Service should process/acknowledge -install command line, thats not default functionality
prasad_som wrote:
anI've used it in one of my project
Thats nice and i started my career with that
"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
-- modified at 4:46 Thursday 15th September, 2005
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GflPower wrote:
how to install windows NT service int cmd ?
use CreateService api
"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
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Read this[^] guide.
Marc Soleda
... she said you are the perfect stranger she said baby let's keep it like this... Tunnel of Love, Dire Straits.
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I recently started exploring using an SDI interface for this app I'm trying to write and I'm currently filling out the source code to do it (which should be complicated). I started the project from the AppWizard like almost all of my apps do. It asked me for a default file extension but I didn't give one not knowing what I'd want and figured I could set it later and here I am, ready to set a default extension but I can't seem to find it. I've tried searching help files and searching for the text "ext" but nothing shows up. Does the system default to All Files since I didn't offer up an extension and I need to add in something somewhere to set the extension?
Also, how can I change what shows up in the child window? I just get a big white area. I want to take out that white area and place controls on my own in there through source code.
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