dcsimg

Using F2 as a hot key to Rename an Item in a ListCtrl or TreeCtrl

WEBINAR:
On-Demand

Desktop-as-a-Service Designed for Any Cloud ? Nutanix Frame


I had learned how to use ListCtrl and TreeCtrl using the examples given in CodeGuru. Soon I felt the need for a hotkey F2 to rename an Item (As in Internet Explorer), and add CUT, COPY, PASTE and Undo on the EditCtrl that appears. These functionality can be achieved by a small modification to the Article posted by Zafir Anjum.

Although I have taken great care while coding this use this code at your own risk.

Add the following code to the .cpp file of your CListCtrl or CListView

BEGIN_MESSAGE_MAP(CMyListView, CListView)
    ON_WM_KEYDOWN()
    ON_NOTIFY_REFLECT_EX( LVN_BEGINLABELEDIT, OnBeginLabelEdit )
    ON_NOTIFY_REFLECT_EX( LVN_ENDLABELEDIT, OnEndLabelEdit )
END_MESSAGE_MAP()

void CMyListView::OnKeyDown( UINT nChar, UINT nRepCnt, UINT nFlags )
{
    CListCtrl& oListCtrl = GetListCtrl( );
    switch( nChar )
    {
    case VK_F2:
        {
            // To Use F2 as hot Key to get EditCtrl on the ListView it must have 
            // the Style LVS_EDITLABELS
            ASSERT( oListCtrl.GetStyle() & LVS_EDITLABELS );

            // don't do an Edit Label when the multiple Items are selected
            if( oListCtrl.GetSelectedCount( ) == 1 )
            {
                UINT nListSelectedItem = GetSelectedItem();
                VERIFY( oListCtrl.EditLabel( nListSelectedItem ) != NULL );
            }
            else
                CListView::OnKeyDown( nChar, nRepCnt, nFlags );
        }
        break;

    default:
        CListView::OnKeyDown( nChar, nRepCnt, nFlags );
        break;
    }

}

// this Function Returns the first Selected Item In the List
UINT CMyListView::GetSelectedItem()
{
    CListCtrl& oListCtrl = GetListCtrl( );
    // this Function Valid Only when a Single Item Is Selected
    ASSERT( oListCtrl.GetSelectedCount( ) == 1 );

    UINT nNoOfItems = oListCtrl.GetItemCount( );

    for( UINT nListItem = 0; nListItem < nNoOfItems; nListItem++ )
        if( oListCtrl.GetItemState( nListItem, LVIS_SELECTED )  )
            break;

    ASSERT( nListItem < nNoOfItems );
    return nListItem;
}

Add this in the MessageMap section of CMyListView or CMyListCtrl file.
    afx_msg void OnKeyDown( UINT nChar, UINT nRepCnt, UINT nFlags );

Add this Function as a private Member Fn to your CMyListView or CMyListCtrl .h file.

    UINT GetSelectedItem();

Download demo project - 20 KB



This article was originally published on February 23rd, 1999

Most Popular Programming Stories

More for Developers

RSS Feeds

Thanks for your registration, follow us on our social networks to keep up-to-date