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Combobox events with "CBS_DROPDOWN" style.

Hi,
I derive a a class from CComboBox (CMyComboBox), and in it I capture some events such as OnKillFocus, and PreTranslateMessage (in order to handle Enter-pressing, and Escape-pressing). The combo can be created with CBS_DROPDOWN style or with CBS_DROPDOWNLIST style.
If I create it with CBS_DROPDOWNLIST than everything is fine, but when using CBS_DROPDOWN style, a EditBox is created (as a child of the combobox) and The combobox itself does not get the events.
How can I handle the WM_KILLFOCUS events in CMyComboBox class when using CBS_DROPDOWN style ???

Thanks,
Yoav.

Roshan Davis

Try this

// The following code shows how to subclass the edit control and list box
// controls inside a combo box. It uses WM_CTLCOLOR for subclassing.
// CSuperComboBox represents the combo box.
HBRUSH CSuperComboBox::OnCtlColor(CDC* pDC, CWnd* pWnd, UINT nCtlColor)
{
if (nCtlColor == CTLCOLOR_EDIT)
{
//Edit control
if (m_edit.GetSafeHwnd() == NULL)
m_edit.SubclassWindow(pWnd->GetSafeHwnd());
}
else if (nCtlColor == CTLCOLOR_LISTBOX)
{
//ListBox control
if (m_listbox.GetSafeHwnd() == NULL)
m_listbox.SubclassWindow(pWnd->GetSafeHwnd());
}
HBRUSH hbr = CComboBox::OnCtlColor(pDC, pWnd, nCtlColor);
return hbr;
}

GOOD LUCK

yoavo

ASKER

I dont think I like this solussion...

Roshan Davis

It will work
another thing is that, How can I solve a microsoft bug in a direct way....

Regards

Roshmon

mblat

Did you try to everwrire REFLECTED CBN_KILLFOCUS?
In class wizard it is =CBN_KILLFOCUS?

yoavo

ASKER

mblat,
You are wtite. this solves me the kill focus problem, but how can I catch enter/escape pressed ?

mblat

Did you try to everwrire REFLECTED CBN_KILLFOCUS?
In class wizard it is =CBN_KILLFOCUS?

mblat

Ok, it's not that simle actually, at list the way I know how to do it isn't. :-(

1. You need to sublclass CEdit control to CMyEdit.
2. Overwrite CMyEdit::OnGetDlgCode() and return DLGC_WANTALLKEYS from it.
3. Declare
CMyEdit m_edit as member variable of your CMyComboBox;
4. In your CMyComboBox owerwrite CMyComboBox::PreSubclassWindow.
5. After
CComboBox::PreSubclassWindow();
line put the following code:

CWnd* ce = GetWindow(GW_CHILD | GW_HWNDFIRST);
m_edit.SubclassWindow(ce->m_hWnd);

Now you can handle WM_KEYDOWN messages inside CMyEdit class...

Hope it helps...

ASKER CERTIFIED SOLUTION

DanRollins

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Combobox events with &quot;CBS_DROPDOWN&quot; style.

Combobox events with "CBS_DROPDOWN" style.