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This is not the proper forum for this question... this is "Forum: C / C++ / MFC"
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How do you know the OP is not asking about how to implement spell check in CRichEditCtrl?
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How does anyone know...
Mark Salsbery
Microsoft MVP - Visual C++
![Java | [Coffee]](https://www.codeproject.com/script/Forums/Images/coffee.gif)
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Mark Salsbery wrote: How does anyone know...
You really never do. That's why God made else. 
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you will have to draw it yourself, if you want such a thing.
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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
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
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
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: < N e > 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?
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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).
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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++
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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
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hi
please ignore this, i have worked it out noe
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How can i make a GUI (screen capture mechanism) like that?
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i want to built MenuBar on right click of list control item
Rajesh
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You probably need to start with this[^].
The best things in life are not things.
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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?
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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.
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i wanna create a project like MSPAINT using MFC..
is there a exsitting project ? where can i get the sourcecode of it?
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You can Google it to find samples.
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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.
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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 ?
Bram van Kampen
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Did you properly subclass your controls?
JohnCz
MS C++ MVP
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Hi @ All,
I´ve created an ActiveX with vs2008 in c++ with simple methods. Now I`m gonna try to usw this activeX in a C# form-application, but i can´t use the methods. I got an exception called: Type mismatch. (Exception from HRESULT: 0x80020005 (DISP_E_TYPEMISMATCH));
I hope someone could help me, I also understand germany
Thanks!
The ActiveX:
...ctrl.cpp
BEGIN_DISPATCH_MAP(CIND890MTActiveScaleLibCtrl, COleControl)
DISP_FUNCTION_ID(CIND890MTActiveScaleLibCtrl, "Multiplikator", DISPID_MULTI, Multiplikator, VT_R8, VTS_PR8 VTS_PR8)
END_DISPATCH_MAP()
.......
double CIND890MTActiveScaleLibCtrl::Multiplikator(double zahlE, double zahlZ)
{
return zahlE + zahlZ;
}
..ctrl.h
class CIND890MTActiveScaleLibCtrl : public COleControl
{
static const int DISPID_MULTI = 1025555;
............
public:
double Multiplikator(double zahlE, double zahlZ);
}
..idl
library IND890MTActiveScaleLibLib
{
static const int DISPID_MULTI = 1025555;
[ uuid(862E674E-512D-4DCC-AE6F-AEED5F078E59),
helpstring("Dispatchschnittstelle für IND890MTActiveScaleLib Control")] dispinterface _DIND890MTActiveScaleLib
{
properties:
methods:
[id(DISPID_MULTI)] double Multiplikator(double zahlE, double zahlZ);
}
.......
[ uuid(8BEE0D1C-C726-4BD8-BEE0-4BD5E0027C9B),
helpstring("IND890MTActiveScaleLib Control"), control ]
coclass IND890MTActiveScaleLib
{
[default] dispinterface _DIND890MTActiveScaleLib;
[default, source] dispinterface _DIND890MTActiveScaleLibEvents;
};
}
The Form-Application:
Form1.cs:
namespace WindowsFormsApplication1
{
public partial class Form1 : Form
{
AxIND890MTActiveScaleLibLib.AxIND890MTActiveScaleLib test;
public Form1()
{
InitializeComponent();
}
private void Speichern_Click(object sender, EventArgs e)
{
double erg = 0, zahl1 = 1234, zahl2 = 4321;
test.IsAccessible = true;
erg = test.Multiplikator(zahl1, zahl2);
}
}
}
Form1.Designer.cs
namespace WindowsFormsApplication1
{
partial class Form1
{
...............
private void InitializeComponent()
{
.......
this.test = new AxIND890MTActiveScaleLibLib.AxIND890MTActiveScaleLib();
((System.ComponentModel.ISupportInitialize)(this.test)).BeginInit();
..........
this.test.Enabled = true;
this.test.CreateControl();
this.test.Name = "test";
this.test.OcxState = ((System.Windows.Forms.AxHost.State)(resources.GetObject("test.OcxState")));
this.test.TabIndex = 0;
...........
}
}
}
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