Re: Please help: trying to capture Enter Key in ComboBox within ToolBar

From:

jeff.g.anderson@gmail.com

Newsgroups:

microsoft.public.vc.mfc

Date:

23 Mar 2007 12:48:31 -0700

Message-ID:

<1174679311.509937.20840@l75g2000hse.googlegroups.com>

On Mar 23, 12:37 pm, "AliR $VC++ MVP$" <A...@online.nospam> wrote:

One more question. What are you using to add the combobox to the toolbar?

AliR.

"AliR (VC++ MVP)" <A...@online.nospam> wrote in messagenews:zOVMh.9556$yW.6620@newssvr11.news.prodigy.net...

What kind of combobox is it? Simple/DorpDown/DropList? Is your
SubclassWindow call getting hit?

AliR.

<jeff.g.ander...@gmail.com> wrote in message
news:1174675271.227976.174730@l77g2000hsb.googlegroups.com...

I have an SDI application with a toolbar (rebar) that contains a
combobox. I need to capture key events (particularly the enter key)
in that combobox. I have followed the MFCIE example from microsoft.

I have also read that in order to capture keypress events in the
combobox, you must dynamically subclass the edit control inside of the
combobox using the OnCtlColor event handler. I have done so like
this:

HBRUSH MyCombo::OnCtlColor(CDC* pDC, CWnd* pWnd, UINT nCtlColor )
{
if (nCtlColor == CTLCOLOR_EDIT)
   {
        //Edit control
        if (m_xEdit.GetSafeHwnd() == NULL)
           m_xEdit.SubclassWindow(pWnd->GetSafeHwnd());
   }

HBRUSH hbr = CComboBoxEx::OnCtlColor(pDC, pWnd, nCtlColor);
return hbr;
}

The call to SubclassWindow returns "1" which is supposed to be a
success. m_xEdit is my derived Edit Control (CComboEdit) which has
handlers for the key events:
BEGIN_MESSAGE_MAP(CComboEdit, CEdit)
//{{AFX_MSG_MAP(CComboEdit)
ON_WM_CHAR()
ON_WM_KEYDOWN()
//}}AFX_MSG_MAP
END_MESSAGE_MAP()

void CComboEdit::OnKeyDown(UINT nChar, UINT nRepCnt, UINT nFlags)
{
  TRACE("KEYDOWN");
}

void CComboEdit::OnChar(UINT nChar, UINT nRepCnt, UINT nFlags)
{
TRACE("ONCHAR");
}

None of these keypress event handlers is ever hit. Am I missing
something with the dynamic subclassing? I have never done that
before, but it seemed pretty straightforward.

Please help, I've been stuck on this a while.

Thanks,
Jeff- Hide quoted text -

- Show quoted text -

Thanks for your fast reply. Here is the line that creates the
combobox:
m_wndAddress.Create(CBS_DROPDOWN | WS_CHILD, CRect(0, 0, 200, 120),
this, AFX_IDW_TOOLBAR + 1)
And here is the line that adds it to the toolbar:
m_wndReBar.AddBar(&m_wndAddress, str, NULL, RBBS_FIXEDBMP |
RBBS_BREAK);

Both of these are in the OnCreate of my main CFrameWnd frame.

And yes, the subclasswindow call is hit and it returns "1". According
to the docs, a nonzero return is a success.

Thanks Again.
Jeff