要实现在WinCC的画面中用一个按钮登录或退出登录,要用C－Action来实现此功能。首
先在画面中新建两个按钮,并分别命名为"Login"和"Logout",然后分别对此二按钮组态
如下的C代码:
Action for log-in(e.g. on event "mouse click"):
#pragma code("useadmin.dll")
#include “PWRT_api.h”
#pragma code()
PWRTLogin(‘C’);
Action for log-out(e.g. on event "mouse click"):
#pragma code ("useadmin.dll")
#include "PWRT_api.h"
#pragma code()
PWRTLogout();