ON_WM_MOUSEHOVER消息要生效,要配合ON_WM_MOUSEMOVE一起使用.代码如下:
void CYuButton::OnMouseMove(UINT nFlags, CPoint point) { // TODO: 在此添加消息处理程序代码和/或调用默认值 TRACKMOUSEEVENT tme = { 0 }; tme.cbSize = sizeof(TRACKMOUSEEVENT); tme.dwFlags = TME_HOVER | TME_LEAVE; tme.dwHoverTime = 50; tme.hwndTrack = this->m_hWnd; if (TrackMouseEvent(&tme)) {} CWnd::OnMouseMove(nFlags, point); }
void CYuButton::OnMouseHover(UINT nFlags, CPoint point) { // TODO: 在此添加消息处理程序代码和/或调用默认值 m_bIsDown = TRUE; Invalidate(); CWnd::OnMouseHover(nFlags, point); }
以上是鼠标放在控件上时的消息响应.鼠标离开控件直接处理ON_WM_MOUSELEAVE消息,如:
void CYuButton::OnMouseLeave() { // TODO: 在此添加消息处理程序代码和/或调用默认值 m_bIsDown = FALSE; Invalidate(); CWnd::OnMouseLeave(); }
也可同时处理失去焦点消息ON_WM_KILLFOCUS,如下:
void CYuButton::OnKillFocus(CWnd* pNewWnd) { CWnd::OnKillFocus(pNewWnd); m_bIsDown = TRUE; Invalidate(TRUE); }