cvSetMouseCallback函数

enum

{

    CV_EVENT_MOUSEMOVE      =0,//鼠标移动

    CV_EVENT_LBUTTONDOWN    =1,//鼠标左键按下

    CV_EVENT_RBUTTONDOWN    =2,//鼠标右键按下

    CV_EVENT_MBUTTONDOWN    =3,//鼠标中间按下？猜测

    CV_EVENT_LBUTTONUP      =4,//鼠标左键弹起

    CV_EVENT_RBUTTONUP      =5,//鼠标右键弹起

    CV_EVENT_MBUTTONUP      =6,//鼠标中键弹起

    CV_EVENT_LBUTTONDBLCLK  =7,

    CV_EVENT_RBUTTONDBLCLK  =8,

    CV_EVENT_MBUTTONDBLCLK  =9

};