Handling the message of the mouse to leave the window (WM_MOUSELEAVE)
WM_MouseLeave is a message issued when the mouse leaves the window, but this message is different from the normal mouse message, to receive the WM_MouseEleave message, you must call TRACKMOUSEEVENT first, and each time the TRASEEVENT window can only receive a WM_MouseLeave, which is also said to get WM_MOUSELEAVE If the message, TRACKMOUSEEVENT must be called when the mouse re-enters the window.
Static Bool BTRACKLEAVE = FALSE;
Void CMYWND :: OnMousemove (uint nflags, cpoint point)
{
IF (! btrackleave)
{
// When the mouse is first moved into the window, ask a WM_MOUSELEAVE message.
TrackMouseEvent TME;
Tme.cbsize = Sizeof (TME);
Tme.hwndtrack = m_hwnd;
Tme.dwflags = TME_LEVE;
_TrackMouseEvent (& TME);
BTRACKLEAVE = True;
/ / Add the code to process the mouse here:
..................................
}
}
Handmade add message mapping and message processing functions
Begin_MESSAGE_MAP (CMYWND, CWND)
// {{AFX_MSG_MAP (CMYWND)
.........................
//}} AFX_MSG_MAP
ON_MESSAGE (WM_MOUSELEAVE, ONMOUSELEAVE)
END_MESSAGE_MAP ()
LPARAM CMYWND :: OnMouseLeave (WPARAM WP, LPARAM LP)
{
BTRACKLEAVE = FALSE;
/ / Add the code that is processed by the mouse here:
........................................
Return 0;
}
