detect memory leak by _CrtDumpMemoryLeaks(); - C / C++ / MFC Discussion Boards

red squiggly line - misspelt words

si_6913-May-11 5:42

si_69

13-May-11 5:42

Hi
Does anyone know how to get/use the red squiggly line used in Ms word for spelling mistakes

thanks

simon

Re: red squiggly line - misspelt words

Albert Holguin13-May-11 7:22

Albert Holguin

13-May-11 7:22

This is not the proper forum for this question... this is "Forum: C / C++ / MFC"

Re: red squiggly line - misspelt words

Hans Dietrich13-May-11 13:09

Hans Dietrich

13-May-11 13:09

How do you know the OP is not asking about how to implement spell check in CRichEditCtrl?

Best wishes,
Hans

[Hans Dietrich Software]

Re: red squiggly line - misspelt words

Albert Holguin13-May-11 13:13

Albert Holguin

13-May-11 13:13

good point, I don't....

Re: red squiggly line - misspelt words

Mark Salsbery13-May-11 14:03

Mark Salsbery

13-May-11 14:03

How does anyone know...

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

Re: red squiggly line - misspelt words

Hans Dietrich13-May-11 20:09

Hans Dietrich

13-May-11 20:09

Mark Salsbery wrote:
How does anyone know...

You really never do. That's why God made else. Smile | :)

Best wishes,
Hans

[Hans Dietrich Software]

Re: red squiggly line - misspelt words

C^hris L^osinger14-May-11 5:32

C^hris L^osinger

14-May-11 5:32

you will have to draw it yourself, if you want such a thing.

image processing toolkits | batch image processing

detect memory leak by _CrtDumpMemoryLeaks();

includeh1013-May-11 2:57

includeh10

13-May-11 2:57

As in link: http://msdn.microsoft.com/en-us/library/e5ewb1h3%28v=VS.80%29.aspx[^]

I defined

#define _CRTDBG_MAP_ALLOC
#include <stdlib.h>
#include <crtdbg.h>

and call _CrtDumpMemoryLeaks() in 2 places:

place 1. from a menu Item.
in this case, I see leaking info as:

Detected memory leaks!
Dumping objects ->
{3443} normal block at 0x02EE9BF8, 373376 bytes long.
 Data: <                > C0 C0 C0 C0 C0 C0 00 00 00 00 00 00 00 00 00 00 
afxtempl.h(330) : {3273} normal block at 0x01DCD530, 4 bytes long.
 Data: <(   > 28 10 07 02 
strcore.cpp(118) : {3272} normal block at 0x01DCF2A0, 22 bytes long.
 Data: <            H a > 01 00 00 00 04 00 00 00 04 00 00 00 48 00 61 00 
//more...
E:\Develops\MyProgram\MyUser.cpp(101) : {3258} client block at 0x01DCF890, subtype 0, 152 bytes long.
a CWnd object at $01DCF890, 152 bytes long
strcore.cpp(118) : {3256} normal block at 0x01DCE130, 22 bytes long.
 Data: <            N e > 01 00 00 00 04 00 00 00 04 00 00 00 4E 00 65 00 
//more...

I think info above is not meaningful because app has not exited and many operator "new"s have not been deleted.

place 2. at exit point (MFC - destructor of CWinApp's subclass)
this time, I still see

Detected memory leaks!
Dumping objects ->
{3473} normal block at 0x01DA20C0, 28 bytes long.
 Data: <    !Ce         > BC DF AF AB 21 43 65 87 83 00 00 00 00 00 00 00 
{3443} normal block at 0x02EE9BF8, 373376 bytes long.
 Data: <                > C0 C0 C0 C0 C0 C0 00 00 00 00 00 00 00 00 00 00 
//more...

But, this time, there is no any info about my program files, such as in case 1:

E:\Develops\MyProgram\MyUser.cpp(101) : {3258} client block at 0x01DCF890, subtype 0, 152 bytes long.
a CWnd object at $01DCF890, 152 bytes long
strcore.cpp(118) : {3256} normal block at 0x01DCE130, 22 bytes long.
 Data: &lt;            N e &gt; 01 00 00 00 04 00 00 00 04 00 00 00 4E 00 65 00

My Q is:
Does info in place 2 mean that my program has no memory leaks because there are no my files there?
Or how to find solution without my files related info?

Re: detect memory leak by _CrtDumpMemoryLeaks();

Albert Holguin13-May-11 4:47

Albert Holguin

13-May-11 4:47

includeh10 wrote:
Does info in place 2 mean that my program has no memory leaks because there are no my files there?

No, it means that whatever section of the code is causing the leak, didn't provide the expanded information. Usually you have to set certain flags to get the expanded information. Look that up in MSDN.

includeh10 wrote:
Or how to find solution without my files related info?

If you can't figure out how to activate the proper flags for the section of code doing this (to get expanded info), you can still find the leaking data by doing a bit of detective work. You can look for allocations of that size, look for for all allocations without matching deallocations (new/delete as well as malloc/dealloc), look at whether the content (labeled "Data:") provides any clue as to what it may be, and look at memory allocations within the program, usually heap is allocated in chunks and you get allocations in memory that are next to one another (don't know if that makes a lot of sense, but what I mean is if there are two allocations in calls next to one another, they are likely to have addresses in memory that are close to one another, so you can use this to narrow the location of the leak).

Re: detect memory leak by _CrtDumpMemoryLeaks();

Mark Salsbery13-May-11 5:09

Mark Salsbery

13-May-11 5:09

I use a global object of a class that wraps the memory state functions. Easier than trying to find a place in running code to call the functions.

Here's an example:

#ifdef _DEBUG

class _MemStateCheck
{
	public:
		CMemoryState oldMemState, newMemState, diffMemState;

		_MemStateCheck();
		~_MemStateCheck();
};

_MemStateCheck::_MemStateCheck()
{
	 oldMemState.Checkpoint();
}

_MemStateCheck::~_MemStateCheck()
{
    newMemState.Checkpoint();
    if( diffMemState.Difference( oldMemState, newMemState ) )
    {
        TRACE( "************************\n" );
        TRACE( "Memory leaks Detected\n" );
        TRACE( "************************\n" );
		  diffMemState.DumpStatistics();
		  diffMemState.DumpAllObjectsSince();
    }
	 else
	 {
        TRACE( "************************\n" );
        TRACE( "No memory leaks Detected\n" );
        TRACE( "************************\n" );
	 }
}

_MemStateCheck MemCheckObj;
#endif  //#ifdef _DEBUG

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

Re: detect memory leak by _CrtDumpMemoryLeaks();

C^hris L^osinger14-May-11 5:34

C^hris L^osinger

14-May-11 5:34

if you want to see who is allocating those chunks of memory, you can use this... http://msdn.microsoft.com/en-us/library/w2fhc9a3%28v=vs.80%29.aspx[^]

image processing toolkits | batch image processing

Line break in CRichEdit Control

si_6913-May-11 0:34

si_69

13-May-11 0:34

Hi
I am using

m_richEditCtrl.SetSel(s,e);
sel = m_richEditCtrl.GetSelText();

to get the text of a selected item in a RichEdit Control

I having problems detecting if the selected text contains a line break or carriage return

can anyone help

thanks

Simon

Re: Line break in CRichEdit Control

si_6913-May-11 0:43

si_69

13-May-11 0:43

hi
please ignore this, i have worked it out noe Smile | :)

windows media encoder screen capture

Member 296547113-May-11 0:21

Member 2965471

13-May-11 0:21

How can i make a GUI (screen capture mechanism) like that?

how to built popup and attach to listcontrol

rjkg12-May-11 23:44

rjkg

12-May-11 23:44

i want to built MenuBar on right click of list control item

Rajesh

Re: how to built popup and attach to listcontrol

Richard MacCutchan13-May-11 0:13

Richard MacCutchan

13-May-11 0:13

You probably need to start with this[^].

The best things in life are not things.

how to merge cells using msFlexgrid..

spalanivel12-May-11 19:25

spalanivel

12-May-11 19:25

Hi,
How to merge cells using msflexgrid vc++ application. Trying to merge two adjacent cells when they are having same value.
m_Grid.SetMergeCells(1) is not working. Any idea?

Re: how to merge cells using msFlexgrid..

«_Superman_»12-May-11 20:18

«_Superman_»

12-May-11 20:18

Check this - http://www.codeguru.com/forum/archive/index.php/t-328742.html[^]

«_Superman_»
I love work. It gives me something to do between weekends.

Microsoft MVP (Visual C++)

Polymorphism in C

Re: how to merge cells using msFlexgrid..

spalanivel12-May-11 20:41

spalanivel

12-May-11 20:41

Thanks for your reply.
But the link explains the merging entire row values and i need to merge only the 2 adjacent cells not entire row.

Please advice.

how to simulate the mspaint...

dousao12-May-11 17:08

dousao

12-May-11 17:08

i wanna create a project like MSPAINT using MFC..
is there a exsitting project ? where can i get the sourcecode of it?
Smile | :)

Re: how to simulate the mspaint...

KingsGambit12-May-11 18:38

KingsGambit

12-May-11 18:38

You can Google it to find samples.

Re: how to simulate the mspaint...

«_Superman_»12-May-11 20:20

«_Superman_»

12-May-11 20:20

The SCRIBBLE MFC sample has been available for a very long time now - http://msdn.microsoft.com/en-us/library/f35t8fts(v=VS.90).aspx[^]

«_Superman_»
I love work. It gives me something to do between weekends.

Microsoft MVP (Visual C++)

Polymorphism in C

Re: how to simulate the mspaint...

Amarnath S12-May-11 22:34

Amarnath S

12-May-11 22:34

There's a Paint for kids, called Tux Paint, which is open-source. The source is available for Unix / Linux, but going through that source would give you an idea.

CPropertySheet/CPropertyPage

Bram van Kampen12-May-11 15:29

Bram van Kampen

12-May-11 15:29

I am trying to implement a CPropertySheet/CPropertyPage in my App. In the pages I use well tried and tested Owner Drawn List Boxes, derrived from CListBox. The Class I Derrived works well in a CDialog.

Put the thing in a CProperty Page, and it ASSERTS in CListBox.DrawItem(...) In Other Words, it called the MFC Base Class's DrawItem, instead of my Derived Class's DrawItem. It also does this before calling CMyPropertySheet::OnInitDialog() Or for that matter CMyPropertyPageq1::OnInitDialog(). Any Solutions or observations ?

Smile | :)

Bram van Kampen

Re: CPropertySheet/CPropertyPage

JohnCz14-May-11 11:37

JohnCz

14-May-11 11:37

Did you properly subclass your controls?

JohnCz
MS C++ MVP

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.