C / C++ / MFC

Re: how to add check boxes

5-Feb-07 20:28

See Adding Checkboxes to a list control[^] and XListCtrl - A custom-draw list control with subitem formatting [^]

WhiteSky

ThatsAlok6-Feb-07 19:55

ThatsAlok

6-Feb-07 19:55

pavan_sw wrote:
how to add checkboxs for multiple coloumns in listview..
LVS_EX_CHECKBOXES is working for only one coloumn...

CLIstCtrl::ModifyStyleEx

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VC Forum Q&A :- I/ IV
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Message Map Return types

G.DHANASEKAR5-Feb-07 19:18

G.DHANASEKAR

5-Feb-07 19:18

How to make ON_ENCHANGE message Map returning an int or CSize?

I have added this in the header file:
afx_msg int OnEnChangeEditmessage();

The message map I added was :
ON_EN_CHANGE(IDC_EDITMESSAGE, _OnEnChangeEditmessage)

My message handling function is:

int CPreferences::OnEnChangeEditmessage()
{
CPaintDC *pDC;
CSize size;

size = pDC->GetTextExtent(m_strMessage);
return size.cx;
}

ikikhjkhjkhjkhj

Don Box5-Feb-07 19:46

Don Box

5-Feb-07 19:46

Typecast OnEnChangeEditmessage in ON_EN_CHANGE(IDC_EDITMESSAGE, OnEnChangeEditmessage) to the original prototype.

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Roger Stoltz5-Feb-07 22:58

Roger Stoltz

5-Feb-07 22:58

Stop! Wrong way.

All message handlers that are put inside the message map have specific declarations.
In your case the prototype shall look like this, the identifier name excepted:

afx_msg void OnEnChangeEditMessage();

You cannot change the return type for message handlers. You have to solve whatever problem you're having in another way. All message handlers in Win32 always return an LRESULT. In MFC this is hidden so MFC message handlers for windows returns void, like above. But if you write a message handler for a user defined message you still have to return an LRESULT, even when using MFC.

Describe your problem if you want suggestions for alternative solutions.

"It's supposed to be hard, otherwise anybody could do it!" - selfquote

Mark Salsbery6-Feb-07 8:08

Mark Salsbery

6-Feb-07 8:08

Going a layer further than Roger's reply - take a look at the EN_CHANGE notification docs.
There is no return value. Even if you returned something it would be ignored by the system.
The platform sdk is your friend Smile | :)

Set Edit Box Text from Different Dialog

ThatsAlok6-Feb-07 19:56

ThatsAlok

6-Feb-07 19:56

wrote:
My message handling function is:

int CPreferences::OnEnChangeEditmessage()
{
CPaintDC *pDC;
CSize size;

size = pDC->GetTextExtent(m_strMessage);
return size.cx;
}

every Message map has it specific handler... you have to consult MSDN for same

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

cheers,
Alok Gupta
VC Forum Q&A :- I/ IV
Support CRY- Child Relief and you

Sonani Prakash5-Feb-07 19:08

5-Feb-07 19:08

There are two seperate application dialog.
on one dialog there is one text box as well as check box and on other dialog
there is one button.

now if I press on second dialog's button,then some text should be set on
first dialog's text box and checkbox.

I am able to set text of checkbox but not able to set text into edit box.
I used logic like following
CWnd* pWnd = CWnd::FindWindow(NULL,_T("TestDialog"));
if (pWnd)
{
pWnd->ShowWindow(SW_SHOW);
pWnd->SetForegroundWindow();
pWnd->SetDlgItemText(1003,"Hello");
pWnd->SetDlgItemText(1001,"Hello111");

}

Can anybody tell me how to set text on other application dialog's edit box

Thanks,
Prakash

sonani prakash

Hamid_RT5-Feb-07 19:20

5-Feb-07 19:20

What happens if you use of GetDlgCtrlID() instead 1001

WhiteSky

Sonani Prakash5-Feb-07 19:28

5-Feb-07 19:28

Now I am able to set text using SendMessage(WM_SETTEXT,...)
Now I have question about getting ID or handle of the edit box of other application dialog ?

sonani prakash

Hamid_RT5-Feb-07 19:34

5-Feb-07 19:34

You can use of this code if we suppose you have two dialogs Main and Local then insert this code on the Local

CMain *m_pMain=(CMain*)GetParent();

m_pMain->function or variables on other dialog

WhiteSky

Sonani Prakash5-Feb-07 19:41

5-Feb-07 19:41

BOTH THE DIALOGS ARE PART OF SEPERATE APPLIATIONS.
SO First I can get the handle of dialog windows of other application but problem about it's edit box.

sonani prakash

Hamid_RT5-Feb-07 20:07

5-Feb-07 20:07

You can use of EnumChildWindow for enumerates child windows and the use of GetClassName and check if returned class is EDIT also see here[^]

WhiteSky

Sonani Prakash5-Feb-07 20:59

5-Feb-07 20:59

I have used the same and got the solution.

Thanks for your help.
Prakash.

sonani prakash

Hamid_RT5-Feb-07 21:22

5-Feb-07 21:22

You're welcome Wink | ;)

WhiteSky

ThatsAlok6-Feb-07 19:57

ThatsAlok

6-Feb-07 19:57

better use SetDlgItemText from other window!

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

cheers,
Alok Gupta
VC Forum Q&A :- I/ IV
Support CRY- Child Relief and you

populating datagrid...

meg15-Feb-07 18:59

5-Feb-07 18:59

hi i need to place a datagrid on a dialog based application and fetch data from database on sql server so as to show into the datagrid...please suggest the required codes...and where to place them?...

Hamid_RT5-Feb-07 19:44

5-Feb-07 19:44

Do you need to grid control if yes see MFC Grid control 2.26[^] of Mr Chris Maunder

WhiteSky

meg15-Feb-07 21:34

5-Feb-07 21:34

i have to place the inbuilt registered activx control microsoft datagrid in the dialog box and then do the data binding with the database in the sql server.i need the code for connectivity and data binding to the datagrid and where to place it.

Thanks

meg16-Feb-07 0:04

6-Feb-07 0:04

i visited "Binding MFC Grid to database" by Mazdak dated 9 Oct 2002...there was some code given but i could not understand where to place the code..

Hamid_RT6-Feb-07 5:24

6-Feb-07 5:24

Is your problem about read and insert data of database to grid control

WhiteSky

meg16-Feb-07 16:43

6-Feb-07 16:43

yea....i need to make the connectivity and then display the data of the database table into the datagrid....actually i m new to vc++ and so m not able to understand..

Hamid_RT6-Feb-07 19:56

6-Feb-07 19:56

Whats database?

WhiteSky