C / C++ / MFC Discussion Boards

Jim Jim16-Apr-06 23:46

16-Apr-06 23:46

Hi all,

I have a CTreeCtrl as a child of a docking window (CMyBar). In my docking window class I set a handle just like this:

(

CMyBar.cpp)<br />
ON_NOTIFY(TVN_SELCHANGED, ID_TREE, OnTreeChange) ...<br />

The declaration of the function is

(CMyBar.h)<br />
afx_msg void CMyBar::OnTreeChange(NMHDR *hdr, LRESULT *NotUsed)<br />

I had to explicity add the ON_NOTIFY handler because the Visual Studio6 ClassWizard doesn't show the ON_NOTIFY event for my docking class (CMyBar), (don't know why?).

As far as I know CTreeCtrl does send ON_NOTIFY notifications to it's parent (CMyBar). Spying++ CMyBar window class shows CMyBar gets WM_NOTIFY messages...

Now all this crap doesn't work (OnTreeChange never gets called), and I'm to figure out what's going on and what's wrong with it.

Would be really happy if someone can answer this question...

Thank you!

Re: Not getting ON_NOTIFY

YaronNir17-Apr-06 0:59

YaronNir

17-Apr-06 0:59

try to look with spy on the Tree Control properties, perhaps it has a flag indicating not sending a parent notify (WM_PARENTNOTIFY).....in my code the selchange does call the parent notification and the method OnTreeChange does get called....

hope this helps

Yaron

Ask not what your application can do for you,
Ask what you can do for your application

Re: Not getting ON_NOTIFY

Jim Jim17-Apr-06 1:42

Jim Jim

17-Apr-06 1:42

Hi Yaron,

Thanks for the reply... But the problem is my parent window (CMyBar) does get WM_NOTIFY and VM_PARENTNOTIFY messages(I've checked it with Spy), but my method OnTreeChange never gets called...

I'm new to MFC and I'm sure I'm missing something here.

Jim Jim

Re: Not getting ON_NOTIFY

YaronNir17-Apr-06 2:06

YaronNir

17-Apr-06 2:06

well, if you have checked it with spy and the Bar does get the WM_NOTIFY message, then check the id of the tree control (IDC_TREE) check the name of the function.....other than that it suppose to work....

Ask not what your application can do for you,
Ask what you can do for your application

Re: Not getting ON_NOTIFY

Jim Jim17-Apr-06 5:55

Jim Jim

17-Apr-06 5:55

YaronNir wrote:
well, if you have checked it with spy and the Bar does get the WM_NOTIFY message, then check the id of the tree control (IDC_TREE) check the name of the function.....other than that it suppose to work....

Thanks for your help! You're right, it was a an incorrect id of the tree control. Frown | :(

Jim Jim

Access Control variable values in one PropertyPage from another Property Page.

kiran janaswamy16-Apr-06 23:29

kiran janaswamy

16-Apr-06 23:29

hi all,

i am unable to access the property page control values from another property page.

// snippet of the code

CPropertySheet dlg(_T("Hellow"), this, 0);

one a; //First Property Page
two b; //second Property Page
three c; //third Property Page

dlg.AddPage(&a);
dlg.AddPage(&b);
dlg.AddPage(&c);
dlg.SetWizardMode();
dlg.DoModal();
//================================================

if the first property page contains the ComboBox with some values i am trying to acces the values in the second property page as

one* m_Main2 = (one *) GetParent();
CString str;
for(int i =0;i< m_Main2->p->GetCount();i++)
{
m_Main2->p->GetLBText(i,str); // p is the pointer of the combobox
MessageBox(str);
}

where p is the pointer of combobox control in the first property sheet.

any solutions for this please.

thanks
uday.

uday kiran

Re: Access Control variable values in one PropertyPage from another Property Page.

Nishad S17-Apr-06 0:05

Nishad S

17-Apr-06 0:05

The dialog of property will be created only if it is shown once. That is why you can't access them.

- NS -

Re: Access Control variable values in one PropertyPage from another Property Page.

David Crow17-Apr-06 3:36

David Crow

17-Apr-06 3:36

As each tab loses focus, store the control's values in the sheet (parent).

"Let us be thankful for the fools. But for them the rest of us could not succeed." - Mark Twain

"There is no death, only a change of worlds." - Native American Proverb

How detect leak memory

Le Thanh Cong16-Apr-06 23:03

Le Thanh Cong

16-Apr-06 23:03

I have a big project and when run application, VC report leak memory but I don't know variable is cause leak memory? Can you help me

-----------------
conglt

Re: How detect leak memory

sunit517-Apr-06 0:04

sunit5

17-Apr-06 0:04

Install Bounds checker

never say die

Re: How detect leak memory

Le Thanh Cong17-Apr-06 21:19

Le Thanh Cong

17-Apr-06 21:19

Bounds checker is good but expensive, I can't buy it

-----------------
conglt

-- modified at 3:28 Tuesday 18th April, 2006

Re: How detect leak memory

YaronNir17-Apr-06 1:03

YaronNir

17-Apr-06 1:03

look here:

http://www.codeproject.com/tools/visualleakdetector.asp[^]

Ask not what your application can do for you,
Ask what you can do for your application

Re: How detect leak memory

Le Thanh Cong17-Apr-06 21:18

Le Thanh Cong

17-Apr-06 21:18

thanks

-----------------
conglt

Re: How detect leak memory

Hamid_RT17-Apr-06 19:43

Hamid_RT

17-Apr-06 19:43

Hi Le Thanh Cong,

maybe it is some helpful to you

http://www.codeguru.com/Cpp/Cpp/cpp_mfc/mem_tracking/article.php/c825[^]

Re: How detect leak memory

Le Thanh Cong17-Apr-06 21:12

Le Thanh Cong

17-Apr-06 21:12

thanks

-----------------
conglt

change program icon in VS2005

big_denny_20016-Apr-06 23:02

big_denny_200

16-Apr-06 23:02

Hi all

Can someone tell me steps I need to take in order to change my programs default MFC icon to the icon I want ?

Thanks.

I am having some strange problems, when simply rename the icon i want to IDR_MAINFRAME

Re: change program icon in VS2005

YaronNir17-Apr-06 4:45

YaronNir

17-Apr-06 4:45

where u see in the code LoadIcon and IDR_MAINFRAME change the IDR_MAINFRAME to your desired icon (use the MAKEINTRESOURCE maco if it an icon from the resources)

hope it helps

Yaron

Ask not what your application can do for you,
Ask what you can do for your application

Re: change program icon in VS2005

Hamid_RT17-Apr-06 19:35

Hamid_RT

17-Apr-06 19:35

Hi big_denny_200
Example
HICON h=LoadIcon(AfxGetApp()->m_hInstance,(LPCTSTR)IDI_ICON1);
SetIcon(h,0);

Global static variables

vikramlinux16-Apr-06 22:46

vikramlinux

16-Apr-06 22:46

Hi friends,
1)What is user of global static variables.
2) can i user those vars in other files with extern keyword?

Vikram S

Re: Global static variables

sunit516-Apr-06 23:02

sunit5

16-Apr-06 23:02

vikrams wrote:
2) can i user those vars in other files with extern keyword?

it has an internal linkage ie its scope is in the translation unit where it is defined.

vikrams wrote:
2) can i user those vars in other files with extern keyword?

u have to remove the static keyword

never say die

-- modified at 5:04 Monday 17th April, 2006

Re: Global static variables

vikramlinux16-Apr-06 23:13

vikramlinux

16-Apr-06 23:13

Can u please put some more light on "translation unit" concept in terms of source & header files?

Re: Global static variables

vikramlinux17-Apr-06 0:37

vikramlinux

17-Apr-06 0:37

Hi Friends,
After some analysis I got following answers
1) When u compile your files(any type of project). each cpp/cxx/C file treated as separate translation unit
2) Object file will be created for each one of them

So for static variables

1) If the static variable in declared in some other cpp/cxx/c file, U can not access it ( using extern keyword) as it becomes as private for that file/translation unit.
2) If u declared global static variable in header file then each translation unit will get copy of it and also your final exe will contain mutiple instances of that global variable
for each file contents (means the functions/classes... inside file ).

Experts.. Please correct me if there is any incorrectness.

VikramS

Re: Global static variables

vikramlinux17-Apr-06 0:38

vikramlinux

17-Apr-06 0:38

Timing diagram

RockyJames16-Apr-06 22:40

RockyJames

16-Apr-06 22:40

Hi,
Does any have idea of "Timing Diagram"..i want to implement it,pls help me out.

thanks in before
James rocky

Re: Timing diagram

David Crow17-Apr-06 3:38

David Crow

17-Apr-06 3:38

RockyJames wrote:
Does any have idea of "Timing Diagram"..

This could be most anything. Please elaborate.

"Let us be thankful for the fools. But for them the rest of us could not succeed." - Mark Twain

"There is no death, only a change of worlds." - Native American Proverb

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