在CStageButton類的實現(xiàn)代碼中，設置當鼠標按下時觸發(fā)的云臺控制代碼和鼠標抬起時停止對云臺的控制。代碼如下：

//當按下鼠標按鈕時，根據(jù)按鈕的類型標識調用不同的方法

void CStageButton::OnLButtonDown(UINT nFlags, CPoint point) 

{

switch(m_Type)

{

case ctUp:

{

((CCaptureDlg*)GetParent())->OnUp(); //控制云臺向上

break;

}

case ctDown:

{

((CCaptureDlg*)GetParent())->OnDown(); //控制云臺向下

break;

}

case ctLeft:

{

((CCaptureDlg*)GetParent())->OnLeft(); //控制云臺向左

break;

}

case ctRight:

{

((CCaptureDlg*)GetParent())->OnRight(); //控制云臺向右

break;

}

case ctInFoci:

{

((CCaptureDlg*)GetParent())->OnInFoci(); //設置聚焦減

break;

}

case ctReFoci:

{

((CCaptureDlg*)GetParent())->OnReFoci(); //設置聚焦增

break;

}

case ctInLen:

{

((CCaptureDlg*)GetParent())->OnInLen(); //設置對焦減

break;

}

case ctReLen:

{

((CCaptureDlg*)GetParent())->OnReLen(); //設置對焦增

break;

}

case ctInAperture:

{

((CCaptureDlg*)GetParent())->OnInAperture(); //設置光圈減

break;

}

case ctReAperture:

{

((CCaptureDlg*)GetParent())->OnReAperture(); //設置光圈增

break;

}

case ctInBrush:

{

((CCaptureDlg*)GetParent())->OnInBrush(); //設置畫筆減

break;

}

case ctReBrush:

{

((CCaptureDlg*)GetParent())->OnReBrush(); //設置畫筆增

break;

}

default:

{

break;

}

}

CButton::OnLButtonDown(nFlags, point);

}

//當釋放鼠標按鈕時停止對云臺的控制

void CStageButton::OnLButtonUp(UINT nFlags, CPoint point) 

{

((CCaptureDlg*)GetParent())->OnReset();

CButton::OnLButtonUp(nFlags, point);

}