Re: Send message issue

From:

nicetom786@yahoo.com

Newsgroups:

microsoft.public.vc.mfc

Date:

2 Jun 2006 15:28:10 -0700

Message-ID:

<1149287290.135442.176890@c74g2000cwc.googlegroups.com>

Hi Tom,
Thanks for your mail.

I used SendMessage from Document to a control which was subclassed and
I was succesful.

When i was trying to send message from 1 control(CMyListCtrlOne) to
another control(CMyListCtrlTwo)both subclassed I get the following
error.

Even though I use SendMessage I get an error-

SendMessageA does not take 4 parameters.

1>c:\\samples\\cml\mylistctrl.cpp(92) : error C2660:
'CWnd::SendMessageA' : function does not take 4 arguments

The code was

void CMyListCtrlOne::OnNMClick(NMHDR *pNMHDR, LRESULT *pResult)
{
//CFrameWnd * pFrame = (CFrameWnd *)(AfxGetApp()->m_pMainWnd);
//now get the view from that
//CCView *mv = (CCView*)pFrame->GetActiveView();

SendMessage(mv->m_myCtrlTab.userDlg->m_myListCtrTwo,WM_INSERT_ITEMS,0,0);
}

Why this happens and what is the way to correct this
mv->m_myCtrlTab.userDlg->m_myListCtrTwo
view->control->tab->dialog->list control variable (subclassed )
Thanks
Tom
Tom Serface wrote:

You may want to check the return from GetCurrentView() before doing this
call just as a sane practice sort of thing. You could also call SendMessage
in the CWnd * object:

CMyView* pView = GetCurrentView();
if(pView != NULL) {
pView->SendMessage(WM_MYMESSAGE,0,0);
}

Or, if you don't want to wait for a return, you could use PostMessage()
instead.

As Ajay said, you can send or post messages to any window. Of course, only
the windows with handlers for those messages will do anything with them.

Tom

<nicetom786@yahoo.com> wrote in message
news:1149274724.117960.295000@i39g2000cwa.googlegroups.com...

Hi Ajay,

this is how I am sending it from Document.

SendMessage(GetCurrntView()->m_myListctrl,
  WM_MY_MESSAGE,
   0,
   0);

And in the MyListCTRL.PP
I have to implement hander for WM_MY_MESSAGE()
Let me know is this correct

thanks
Tom
Ajay Kalra wrote:

Can SendMessage can be used to send a message from document to a window
which is subclassed

Yes. You can use SendMessage from anywhere as long as you are sending it
to
a window.

--
Ajay Kalra [MVP - VC++]
ajaykalra@yahoo.com