Re: Zoom buttons in toolbar

From:

=?Utf-8?B?TGF1cnM=?= <Laurs@discussions.microsoft.com>

Newsgroups:

microsoft.public.vc.mfc

Date:

Wed, 7 May 2008 07:31:03 -0700

Message-ID:

<8730DDAF-A5FA-4FB1-8FF3-588825417100@microsoft.com>

Thanks Scott and foobar.
I have it up and running now. It helped me to write the OnMouseMove in my
ToolBar Class.
I gets the correct command ID, now I only need to find a way to draw the
enlarged bitmap of the button at the tip of mouse cursor.
If you have any code nipped to do that, I will be a happy man.
--
Laurs Laursen

"foobar" wrote:

Where is your OnMouseMove handler? If it is in your button class then
as I understand, it should get executed
when mouse enters the button region.

To get mouse leave event you would need to handle WM_MOUSELEAVE
message
ON_MESSAGE(WM_MOUSELEAVE, OnMouseLeave)

WM_MOUSELEAVE message won't be generated by default. We need to track
mouse event for TME_LEAVE so that it gets generated.
OnMouseMove handler can include code similar to following lines to let
button receive MouseLeave event

if (!m_bMouseTracking)
    {
        TRACKMOUSEEVENT mouseevent;
        mouseevent.cbSize = sizeof(TRACKMOUSEEVENT);
        mouseevent.dwFlags = TME_LEAVE;
        mouseevent.hwndTrack = this->m_hWnd;

        if (::_TrackMouseEvent(&mouseevent))
        {
            m_bMouseTracking = TRUE;
        }
    }

and inside OnMouseLeave method handler we set m_bMouseTracking back to
FALSE so that next time mouse enters we
again start tracking mouse event for its leave message.

HTH

On May 7, 4:30 pm, Laurs <La...@discussions.microsoft.com> wrote:

I allready handle the TTN_NEEDTEXT events, but how do I know when the mouse
is in the region of the button. I have a virtual OnMouseMove(UINT nFlags,
CPoint pnt) but I get no message when the mouse is in a toolbar.

--
Laurs Laursen