Memory leak in IMPLEMENT_DYNCREATE(CMDIChildWnd) - C / C++ / MFC Discussion Boards

Re: How to compare string..

toxcct19-Dec-06 1:54

toxcct

19-Dec-06 1:54

you didn't read the answers Sleepy | :zzz:

Don't know where to start ?
Refer the Forums Guidelines and ask a friend

[VisualCalc 3.0][Flags Beginner's Guide]

Re: How to compare string..

David Crow19-Dec-06 3:03

David Crow

19-Dec-06 3:03

What you've shown in now way indicates that contents is a pointer. While mytext is indeed a pointer, you've shown nothing of its contents member. If contents is indeed a pointer, what's it a pointer to?

"Approved Workmen Are Not Ashamed" - 2 Timothy 2:15

"Judge not by the eye but by the heart." - Native American Proverb

Re: How to compare string..

Shah Satish19-Dec-06 1:54

Shah Satish

19-Dec-06 1:54

Ya..I have to use only "or" function..
but among them one is pointer and one is string..

mytext->contents is a pointer..

as in

AcDbMtext *mytext ;
mytext->Contents;

If( (Loopname.CompareNocase(x1)==0) || (Loopname.CompareNocase(mytext->contents)==0))

x1 is cstring and (mytext->contents)is a pointer..

what to do?? How t compare it?

Re: How to compare string..

prasad_som19-Dec-06 17:05

prasad_som

19-Dec-06 17:05

Come on Satish !
You are still not reading answers well and replying to our queries well.
1. What does not working mean ? You need to be very clear.
2. Have you taken in to consideration when using || operator second operand will be looked only when first is false?

Shah Satish wrote:
x1 is cstring and (mytext->contents)is a pointer..

It should not matter here.

Prasad
Notifier using ATL | Operator new[],delete[][^]

Re: How to compare string..

Shah Satish19-Dec-06 20:54

Shah Satish

19-Dec-06 20:54

Hi Prasad !!!
I am sorry for delay..The ocde is exactly right n its working now..The problem was in my software...But now its working properly..

Thanks man !!!

Shah

Re: How to compare string..

Maximilien19-Dec-06 3:03

Maximilien

19-Dec-06 3:03

if this does not work, split the CompareNoCase and the if in different statements and debug each statement separatly.

bool b1 = (x1.CompareNoCase(s1)== 0);
bool b2 = (x1.CompareNoCase(s2)== 0);
if ( b1 || b2 )
{
}

Maximilien Lincourt
Your Head A Splode - Strong Bad

Re: How to compare string..

Shah Satish19-Dec-06 20:55

Shah Satish

19-Dec-06 20:55

Hi Maximilien !!!
I am sorry for delay..The Code is exactly right n its working now..The problem was in my software...But now its working properly..

Thanks man !!!

Shah

Memory leak in IMPLEMENT_DYNCREATE(CMDIChildWnd)

rp_suman18-Dec-06 21:01

rp_suman

18-Dec-06 21:01

When I create a child frame and close it, a memory leak is reported in the output window as follows:
"childfrm.cpp(44) : {2414101} client block at 0x01AF7A00, subtype c0, 444 bytes long."
I would like to know what is possibility for this leak.

I am initializing only one bool variable in the constructor of child frame class.
I am having some user-defined functions in child frame class with return type LRESULT,
and a CSplitterWnd object which is used to create panes with CreateStatic() and CreateView() methods.
Is there any chance for leak from CSplitterWnd.
Is there function to delete the panes created by the splitter.
Any help would be greatly appreciated.

Thanks & Regards,
Suman

Re: Memory leak in IMPLEMENT_DYNCREATE(CMDIChildWnd)

Mark Salsbery19-Dec-06 8:30

Mark Salsbery

19-Dec-06 8:30

What's on this line: childfrm.cpp(44)

Re: Memory leak in IMPLEMENT_DYNCREATE(CMDIChildWnd)

rp_suman19-Dec-06 14:18

rp_suman

19-Dec-06 14:18

It is IMPLEMENT_DYNCREATE(CChildFrm ,CMDIChildWnd).
But I found that this leak happens only when the program stops with some error and selecting "Stop Debugging". The leak is not happening incase of normal halt.
Thanks & Regards,
Suman

Re: Memory leak in IMPLEMENT_DYNCREATE(CMDIChildWnd)

Mark Salsbery19-Dec-06 15:29

Mark Salsbery

19-Dec-06 15:29

rp_suman wrote:
But I found that this leak happens only when the program stops with some error and selecting "Stop Debugging". The leak is not happening incase of normal halt.

That's normal behavior. CFrameWnd-derived windows delete themselves when they are destroyed.
If you stop the application before the window is destroyed (by it's parent in this case) then
it will show as a leak.

Re: Memory leak in IMPLEMENT_DYNCREATE(CMDIChildWnd)

prasad_som19-Dec-06 17:07

prasad_som

19-Dec-06 17:07

rp_suman wrote:
the program stops with some error and selecting "Stop Debugging".

In this case, normal clean up routines does not get called . As Mark said, its normal behaviour.

Prasad
Notifier using ATL | Operator new[],delete[][^]

Re: Memory leak in IMPLEMENT_DYNCREATE(CMDIChildWnd)

rp_suman19-Dec-06 20:06

rp_suman

19-Dec-06 20:06

Thank you very much to all you people for great help.
Thanks & Regards,
Suman

BiSerial || ( PS2) interface

ahmad al-omar18-Dec-06 21:00

ahmad al-omar

18-Dec-06 21:00

dear all ;
please i need to know how can i deal with the ps2 with the vc++ and so i can open the port and take the data .
thanx alot

ahmad al-omar

CArrays

Taruni18-Dec-06 20:27

Taruni

18-Dec-06 20:27

Hi
How should I pass the CArray object to a function and access those elements in the function.

Thanks in advance.

Taruni

Re: CArrays

_AnsHUMAN_ 18-Dec-06 20:51

_AnsHUMAN_

18-Dec-06 20:51

In the header file declare the function as
void PassArray(CArray<int>* myArr); // #include <afxtempl.h>

Now where you need to give a call to the function create an object of CArray like this and set its values too.
CArray<int> arr;
arr.Add(10);
arr.Add(20);
arr.Add(30);
arr.Add(40);
arr.Add(50);
PassArray(&arr);

Now implement the PassArray function as :
for(int i=0;i<myArr->GetSize();i++)
{
CString str;str.Format ("%d",myArr->GetAt(i));
AfxMessageBox(str);
}
// You would see the values being shown in the message box's.
I hope this helps

Re: CArrays

Cedric Moonen18-Dec-06 20:52

Cedric Moonen

18-Dec-06 20:52

To avoid that a copy of the array is made, simply pass it by reference (this will optimize your code)

Cédric Moonen
Software developer

Charting control [v1.1]

Rutime error ?

Sakthiu18-Dec-06 20:09

Sakthiu

18-Dec-06 20:09

Dear All,

I am getting this error .

Run-Time Check Failure #2 - Stack around the variable 'Mac_Addr_Info' was corrupted.

here Mac_Addr_Info is a DWORD variable.

What it is ? How to resolve this runtime error ?

Thanks.

Re: Rutime error ?

prasad_som18-Dec-06 20:15

prasad_som

18-Dec-06 20:15

Sakthiu wrote:
here Mac_Addr_Info is a DWORD variable.

Can you show code, where its used ?

Prasad
Notifier using ATL | Operator new[],delete[][^]

Re: Rutime error ? [modified]

Sakthiu18-Dec-06 20:20

Sakthiu

18-Dec-06 20:20

here it is...

PIP_ADAPTER_INFO Mac;
GetAdaptersInfo(&Mac_Addr_Info,&Mac_Addr_Size);
Mac = &Mac_Addr_Info;

Thanks.

-- modified at 2:28 Tuesday 19th December, 2006

Re: Rutime error ?

prasad_som18-Dec-06 20:30

prasad_som

18-Dec-06 20:30

Sakthiu wrote:
PIP_ADAPTER_INFO Mac;
GetAdaptersInfo(&Mac_Addr_Info,&Mac_Addr_Size);
Mac = &Mac_Addr_Info;

How Mac_Addr_Info is declared ?

Prasad
Notifier using ATL | Operator new[],delete[][^]

Re: Rutime error ?

Sakthiu18-Dec-06 20:44

Sakthiu

18-Dec-06 20:44

like this.,

IP_ADAPTER_INFO Mac_Addr_info;

Re: Rutime error ? [modified]

prasad_som18-Dec-06 21:52

prasad_som

18-Dec-06 21:52

This snippet should work for you,

PIP_ADAPTER_INFO Mac = NULL;
ULONG Mac_Addr_Size = 0;
DWORD dwStatus = 0;
dwStatus = GetAdaptersInfo(Mac,&Mac_Addr_Size);
//first know required buffer size
if (dwStatus == ERROR_BUFFER_OVERFLOW) {
   // Allocate a buffer of the appropriate size
   if (!(Mac = (PIP_ADAPTER_INFO)malloc(Mac_Addr_Size))) {

   }
  dwStatus = GetAdaptersInfo(Mac,&Mac_Addr_Size);
  //dwStatus should be 0 here
}

-- modified at 4:00 Tuesday 19th December, 2006

Prasad
Notifier using ATL | Operator new[],delete[][^]

Re: Rutime error ?

Sakthiu18-Dec-06 22:07

Sakthiu

18-Dec-06 22:07

Hi

Thank so much.

Can you explain how did you resolve it ?

Bye.

Re: Rutime error ?

prasad_som18-Dec-06 22:16

prasad_som

18-Dec-06 22:16

You was passing uninitialized memory address to function. Thats why error was there.
In my code, you can see initialization is there. First call to GetAdaptersInfo determines size required for allocation of buffer. And depending on that value, allocate buffer memory.

One more thing, always post complete problem code, when seeking solution.

Prasad
Notifier using ATL | Operator new[],delete[][^]

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