上面是错误提示
下面是clickhandler的名字和参数
Sub clickhandler(ByVal sender As System.Object, ByVal e As MouseEventArgs)
改成sub clickhandler(byval sender as system.object, byval e as system.eventargs)就没有问题
为什么会这样？怎么解决呢？或者有没有什么办法在其它地方做鼠标判定

擦 真是死吧。。还好我自己解决了

Addhandler event, Sub(sender, e)
clickhandler(sender, e)

click事件的签名是：
(sender as object,e as eventargs)
而
lz
过程的签名是mouseclick事件的签名：
(sender as object,e as mouseeventargs)