2Created;
　CPen pen2;
　if (pen1Created = pen1.CreatePen(PS_SOLID, 1, upCol))
　　pOldPen = pDC->SelectObject( &pen1 );
　　//画左上边缘
　pDC->MoveTo(1,rect.Height()-1);
　pDC->LineTo(1,1);
　pDC->LineTo(rect.Width()-1,1);
　pDC->MoveTo(0,rect.Height()-1);
　pDC->LineTo(0,0);
　pDC->LineTo(rect.Width()-1,0);
　if (pen2Created = pen2.CreatePen(PS_SOLID, 1, downCol))
　　pDC->SelectObject( &pen2 );
　if (pen1Created)
　{
　　pen1.DeleteObject();
　　pen1Created = FALSE;
　}
　//画右下边缘
　pDC->MoveTo(rect.Width()-1,0);
　pDC->LineTo(rect.Width()-1,rect.Height()-1);
　pDC->LineTo(0,rect.Height()-1);
　pDC->MoveTo(rect.Width()-2,1);
　pDC->LineTo(rect.Width()-2,rect.Height()-2);
　pDC->LineTo(0,rect.Height()-2);
　if (pen2Created)//删除"pen2"画笔对象
　{
　　pen2.DeleteObject();
　　pen2Created = FALSE;
　}
　if (pen1Created = pen1.CreatePen(PS_SOLID, 1, edgeCol))
　　pOldPen = pDC->SelectObject( &pen1 );
　if (pen1Created)
　{
　　pen1.DeleteObject();
　　pen1Created = FALSE;
　}
　if (pOldPen != NULL)
　　pDC->SelectObject( pOldPen );
}

void CAviButton::DrawItem(LPDRAWITEMSTRUCT lpDrawItemStruct)
{
　// TODO: Add your code to draw the specified item
　CRect rect;
　GetClientRect(rect);
　if (!::IsWindow(AnimateCtrl))
　{
　　//在按钮上生成一个动画控件
　　AnimateCtrl.Create(WS_CHILD |WS_VISIBLE,rect,this,0);
　　//打开avi文件并显示第一帧
　　AnimateCtrl.Open(m_nAviID);
　　AnimateCtrl.GetClientRect(rect);
　}
　CDC* pDC = CDC::FromHandle(lpDrawItemStruct->hDC);
　UINT nState = lpDrawItemStruct->itemState;
　CRect buttonRect;
　GetClientRect(buttonRect);
　//绘制按钮
　DrawButton(pDC, nState, buttonRect);
}

BOOL CAviButton::Create(LPCTSTR lpszClassName, LPCTSTR lpszWindowName, DWORD
dwStyle, const RECT& rect, CWnd* pParentWnd, UINT nID, CCreateContext* pContext)
{
　// TODO: Add your specialized code here and/or call the base class
　return CWnd::Create(lpszClassName, lpszWindowName, dwStyle,
　rect, pParentWnd, nID, pContext);
}

void CAviButton::OnMouseMove(UINT nFlags, CPoint point)
{
　// TODO: Add your message handler code here and/or call default
　ClientToScreen(&point);
　CRect rcWindow;
　GetWindowRect(rcWindow);
　//判断鼠标是否经过按钮
　BOOL bNewMouseOverButton = rcWindow.PtInRect(point);
　if (bNewMouseOverButton && IsWindowEnabled() )
　{
　　if (::IsWindow(AnimateCtrl) && !bPlaying)
　　{
　　　AnimateCtrl.Play(0,-1,1);
　　　bPlaying = TRUE;
　　　SetCapture();
　　}
　}
　else
　{
　　bPlaying = FALSE;
　　ReleaseCapture();
　}
　CButton::OnMouseMove(nFlags, point);
}
/////////////////////////////////
BOOL CTestAviButtonDlg::OnInitDialog()
{
　CDialog::OnInitDialog();
　…………………//此处代码省略;
　m_AviButton.LoadAvi(IDR_AVI);
　return TRUE; // return TRUE unless you set the focus to a control
}

　　四、小结

　　通过CAnimateCtrl类和按钮控件的自画功能的结合，本实例实现了动画按钮，如果该类和工具条、状态条等控件结合，还可以实现在上述控件上播放动画视