用API:1.用FindWindow或EnumWindows获取父窗口句柄,如果有子窗口还可以用FindWindowEx或EnumChildWindows获取子窗口句柄,在窗体中加Timer控件(如果没有窗口,用SetTimer和KillTimer也行),用SendMessage或PostMessage向窗口发送消息就可以了。发送的消息是:WM_LBUTTONDOWN和WM_LBUTTONUP。2.可以用mouse_event,详情查API吧!3.可以用WinIO,自己从网上下吧!以下是VB中API声明:Public Declare Sub mouse_event Lib "user32" Alias "mouse_ev