Re: ON_CONTROL_REFLECT_EX and message to control and parent - C / C++ / MFC Discussion Boards

Re: Notepad creation in dialog based MFC Application

Mark Salsbery3-Nov-08 5:10

Mark Salsbery

3-Nov-08 5:10

AnithaSubramani wrote:
I need a example code

You can create a working notepad application with the App Wizard.

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

ON_CONTROL_REFLECT_EX and message to control and parent

Russell^'2-Nov-08 22:34

Russell^'

2-Nov-08 22:34

I want my control (CButton derived) has the same behaviour if CLICKED and DOUBLECLICKED.
Now, it is working well if CLICKED...I need to extend the functionality on DOUBLCLICK.
So, I simply added

ON_CONTROL_REFLECT_EX(BN_DOUBLECLICKED, CMyCButton::OnBnDblClicked)

In that function I want to do some similar to

BOOL CMyCButton::OnBnDblClicked(){
	PostMessage(WM_COMMAND, MAKELONG(GetDlgCtrlID(), BN_CLICKED), (LPARAM) GetSafeHwnd());
	return TRUE;  // TRUE to 'kill' the message: I don't want that the parent dialog receive it
}

But in that way only my control receive the message BN_CLICKED, not the parent Dialog.

Please, what is the right way to send/post to the control (together to it's parent) that message?

Russell

Re: ON_CONTROL_REFLECT_EX and message to control and parent

Nishad S2-Nov-08 23:03

Nishad S

2-Nov-08 23:03

Have a look at here[^]... Wink | ;)

- NS -
[ODBaseBtn]

Re: ON_CONTROL_REFLECT_EX and message to control and parent

Russell^'2-Nov-08 23:23

Russell^'

2-Nov-08 23:23

Thank you....but your solution looks work as my previus one, i.e. it is a perfect solution to manage the message inside the control, but his parent window doesn't receive the classic message BN_CLICKED
My be also I'm wronging something...

BOOL XBmpChkBtn::OnBnDblClicked(){
	//CWnd* pParent=GetParent();
	//if(pParent)
	//	pParent->PostMessage(WM_COMMAND, MAKELONG(GetDlgCtrlID(), BN_CLICKED), (LPARAM) GetSafeHwnd());
	const MSG* pstMSG = GetCurrentMessage();
    DefWindowProc(WM_COMMAND, MAKELONG(GetDlgCtrlID(), BN_CLICKED), (LPARAM) GetSafeHwnd());

	return TRUE;	// Kill the message
}

Russell

Re: ON_CONTROL_REFLECT_EX and message to control and parent

Nishad S2-Nov-08 23:29

Nishad S

2-Nov-08 23:29

Please correct as
DefWindowProc( WM_LBUTTONDOWN, pstMSG->wParam, pstMSG->lParam );

- NS -
[ODBaseBtn]

Re: ON_CONTROL_REFLECT_EX and message to control and parent

Russell^'2-Nov-08 23:04

Russell^'

2-Nov-08 23:04

The solution looks:

BOOL CMyCButton::OnBnDblClicked(){
	GetParent()->PostMessage(WM_COMMAND, MAKELONG(GetDlgCtrlID(), BN_CLICKED), (LPARAM) GetSafeHwnd());
	return TRUE;  // TRUE to 'kill' the message: I don't want that the parent dialog receive it
}

or the same of:

ON_CONTROL_REFLECT(BN_DOUBLECLICKED, CMyCButton::OnBnDblClicked)

and

BOOL CMyCButton::OnBnDblClicked(){
	GetParent()->PostMessage(WM_COMMAND, MAKELONG(GetDlgCtrlID(), BN_CLICKED), (LPARAM) GetSafeHwnd());
}

but I'm not sure that it is the right way to manage messages when using derived controls, I was aspecting to do everything inside the control class: that call to GetParent() looks strange to me.

any comments?

Russell

Re: ON_CONTROL_REFLECT_EX and message to control and parent

Iain Clarke, Warrior Programmer2-Nov-08 23:37

Iain Clarke, Warrior Programmer

2-Nov-08 23:37

You posted the solution for yourself.

You are handling the conversion from BN_DOUBLECLICKED to BN_CLICKED in the button control as you desire.

But the whole purpose was to change the message to the parent from BN_DOUBLECLICKED to BN_CLICKED.

So you need to send / post the message to the parent. Which the GetParent () helps you with. If it makes it clearer for you, try this:

BOOL CMyCButton::OnBnDblClicked()
{
    HWND hButton = GetSafeHwnd ();
    HWND hDialog = GetParent (hButton);
    ::PostMessage(hDialog, WM_COMMAND, MAKELONG(GetDlgCtrlID(), BN_CLICKED), (LPARAM)hButton);
}

Ends up being the same though. I'd use SendMessage rather than PostMessage, but that's a different question.

Iain.

Re: ON_CONTROL_REFLECT_EX and message to control and parent

Russell^'2-Nov-08 23:44

Russell^'

2-Nov-08 23:44

I'm according to you
Thank you

Russell

How to create Ini file and enter/retrieve data from it VC++ MFC [modified]

anna mathew2-Nov-08 22:16

anna mathew

2-Nov-08 22:16

This is the code i used ..........To CREATE a File
and enter a default string..

...........Ive TO USE VC++ MFC

void CFileApp::OnInsert()
{

HANDLE hFile = CreateFile(_T("C:\\Documents and Settings\\MyFile.ini"),
GENERIC_WRITE, FILE_SHARE_READ,
NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);

if (hFile == INVALID_HANDLE_VALUE)
AfxMessageBox(_T("Couldn't create the file!"));
else
{
// Attach a CFile object to the handle we have.
CFile myFile(hFile);

static const char sz[] = "Hockey is best!";

// write string, without null-terminator
myFile.Write(sz, lstrlen(sz));
myFile.Close();
}

}

This works.....
BUt For INI I want to ENTER DATA SECTIN-WISE....
...........

Here Data is written just like in Text files...

I need to use ...GetProfileString....
WriteProfileString..... n so on...

how do i do it??

I NEED TO MAKE A PHONE DIRECTORY USING INI FILE......

Re: How to create Ini file and enter/retrieve data from it VC++ MFC

Cedric Moonen2-Nov-08 22:24

Cedric Moonen

2-Nov-08 22:24

Do you plan to use as configuration file for your application ? If yes, this is a bit an outdated way of doing this. More recent applications use the registry to store config options.
If you choose to use the registry, search for articles on CP, there are really a lot. They should get you started.

Cédric Moonen
Software developer

Charting control [v1.5]
OpenGL game tutorial in C++

Re: How to create Ini file and enter/retrieve data from it VC++ MFC

anna mathew2-Nov-08 22:29

anna mathew

2-Nov-08 22:29

No... Im not using INI File to store confiq info...

IM USING INI FILE TO CREATE A PHONE DIRECTORY...

i know there r better methods...
BUT ITS MY ASSIGNMENT....
..........N ITS SAID THAT I USE ONLY INI FILE

Re: How to create Ini file and enter/retrieve data from it VC++ MFC

CPallini2-Nov-08 22:47

CPallini

2-Nov-08 22:47

anna mathew wrote:
IM USING INI FILE TO CREATE A PHONE DIRECTORY...

As I already suggested, MFC object serialization, is far better for the purpose.

If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.

This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong.
-- Iain Clarke

[My articles]

Re: How to create Ini file and enter/retrieve data from it VC++ MFC

CPallini2-Nov-08 22:45

CPallini

2-Nov-08 22:45

The following code snippet create two keys under the section 'General' of the File 'MyFile.ini', and then reads one of the keys, showing the value in a message box.
(of course error check is left to the reader...)

Please note 1: if the file doesn't exist, it creates both the file and the section.

Please note 2: I used WritePrivateProfileString and GetPrivateProfileString, otherwise the I/O would happen inside the registry.

const CString szINIFILE = _T("C:\\Documents and Settings\\anu\\beginning\\MyFile.ini");
CString szFirstName;

WritePrivateProfileString(_T("General"),_T("FirstName"), _T("Anu"), szINIFILE);
WritePrivateProfileString(_T("General"),_T("LastName"), _T("???"), szINIFILE);

GetPrivateProfileString(_T("General"), _T("FirstName"), _T(""), szFirstName.GetBuffer(MAX_PATH), MAX_PATH, szINIFILE);
szFirstName.ReleaseBuffer();


AfxMessageBox(szFirstName);

Re: How to create Ini file and enter/retrieve data from it VC++ MFC

anna mathew3-Nov-08 17:18

anna mathew

3-Nov-08 17:18

Thanks....
this works....

but i put the same lines of code in my MFC
application....
still it works....
can u explain how?

WriteProfileString...... is a console function...
then how come it work with MFC?

Re: How to create Ini file and enter/retrieve data from it VC++ MFC

CPallini3-Nov-08 21:35

CPallini

3-Nov-08 21:35

WritePrivateProfileString is just a WIN32 API's function: Console applications, as well as GUI (and MFC) ones can profitably call it.
Smile | :)

Re: How to create Ini file and enter/retrieve data from it VC++ MFC

anna mathew3-Nov-08 22:00

anna mathew

3-Nov-08 22:00

Thank you

MFC ActiveX control event question [modified]

followait2-Nov-08 22:13

followait

2-Nov-08 22:13

The control will popup a dialog box,
and when I press a buttion in the dialog,
I need the control fire a event?

I tried to do it as below:

CMyDlg::OnOk
{
  CMyCtrl *pCtrl = dynamic_cast<>(GetParent()); // But pCtrl is NULL, for GetParent return
                                                      // the window which contains the control.
  ...
  pCtrl->OnUpdate(var);
}

How to solve it?

modified on Monday, November 3, 2008 7:03 AM

ip address setting and adhoc configuration

LaHaHa2-Nov-08 19:38

LaHaHa

2-Nov-08 19:38

I would like to know how to configure the ip address of a notebook PC. I only want to configure the wireless network adaptor how can I identity it if I don't know the name of the wireless network adaptor.

Also, how to configure the adhoc mode in the notebook by Visual C++?

Please help!!!

Re: ip address setting and adhoc configuration

Iain Clarke, Warrior Programmer2-Nov-08 23:54

Iain Clarke, Warrior Programmer

2-Nov-08 23:54

1/ I doubt it's any different on a notebook to a normal one, other than needing changed more often.

2/ I had the same problem a while ago, as I was forever changing my IP address, so I wrote a little tray app to do it. Quick and dirty, but it worked.
I gave up trying to change it programmatically, and ended up using the
netsh interface ip set command instead, and CreateProcess to make sure that no dos prompt flashed up.

3/ I know nothing about adhoc wifi! Would be nice to learn some time...

Iain.

Re: ip address setting and adhoc configuration

LaHaHa3-Nov-08 11:31

LaHaHa

3-Nov-08 11:31

In the notebook PC, there are more than one network interface. How can I identify the wireless one from another? I know that we can change it with registry if we know the right one.

I can find the adhoc wifi setting in the registry. Can anyone give some hint of it??

Please help!

Can we change the font size for existing createfont handle without creating again

naga.anu2-Nov-08 19:04

naga.anu

2-Nov-08 19:04

i want change the font size for existing createfont() handle without creating again.
Is it possible?

Re: Can we change the font size for existing createfont handle without creating again

Russell^'2-Nov-08 23:32

Russell^'

2-Nov-08 23:32

The answer looks no, or too complex to be the right way.
Why you doesn't like a solution like thi one?

LOGFONT LogFont;
m_Font.GetLogFont(&LogFont);
LogFont.lfEscapement=900;
m_FontVert.CreateFontIndirect(&LogFont);

in my code I'm rotating the font to have vertical text, but you can do the same on the same CFont variable to change other parameters as the font size.

Russell

Socket programming

Chandrasekharan P2-Nov-08 19:01

Chandrasekharan P

2-Nov-08 19:01

I have created this socket xample application given in learn vc++ in 21 days which is successfully working. now my question is how do i connect to multiple ip addresses in my applicaion.

right now this is what is does

m_sConnectSocket.Connect("25.25.25.25", m_iPort);

this ic working. but i want to add multiple ipaddress.

Thanks in advance.

Re: Socket programming

Cedric Moonen2-Nov-08 21:05

Cedric Moonen

2-Nov-08 21:05

What do you mean exactly by multiple addresses ? Why can't you simply open several socket connections if you need ?

Cédric Moonen
Software developer

Charting control [v1.5]
OpenGL game tutorial in C++

Re: Socket programming

Chandrasekharan P2-Nov-08 21:18

Chandrasekharan P

2-Nov-08 21:18

multiple address means multiple people. tried to open several connections. if i give 2 or more connections none of the connections are successful

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