Re: Send message issue

From:
nicetom786@yahoo.com
Newsgroups:
microsoft.public.vc.mfc
Date:
5 Jun 2006 09:54:56 -0700
Message-ID:
<1149526496.030129.235740@c74g2000cwc.googlegroups.com>
hi Scott,
Thanks for response.

This i am calling in the columnclick of listctrlOne that means all
controls had been created and after that I am calling this function.The
debugger goes to this function when an item is clicked that means CView
::OninitilUpdate is already called,Right !

void CMyListCtrlOne::OnNMClick(NMHDR *pNMHDR, LRESULT *pResult)
{
FrameWnd * pFrame = (CFrameWnd *)(AfxGetApp()->m_pMainWnd);

    //now get the view from that
    CCMlView *mv = (CCMView*)pFrame->GetActiveView();
    mv->m_myCtrlTab.userDlg->m_myListCtrlTwo.SendMessage(WM_INSERT_ITEMS,0,0);

}

What I wantto do is to send a message to ListCtrlTwo -myListCtrlTwo
when user clicks an item in ListCtrlOne.

Tom
Scott McPhillips [MVP] wrote:

nicetom786@yahoo.com wrote:

Hi David and Scotts,

Thanks for your response.I could get the concept of using SendMessage()

I used the function and I get an assertion which says the window is
null.

CView->Tabctrl->Dialog->CCMyListCtrl.mv->SendMessage(WM_INSERT_ITEMS,0,0);

//mv->m_myCtrlTab.userDlg->m_myListStudy_user_Ctrl.SendMessage(WM_INSERT_ITEMS,0,0);

How should I get the window to be not null.


This assertion usually means you have attempted to use a window that has
not been created yet. So the problem is probably that you are making
this call too early in the creation sequence. In a view, the controls
have not been created until after OnInitialUpdate calls
CView::OnInitialUpdate.

--
Scott McPhillips [VC++ MVP]

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