2. User LoginAfter the system start

2. User Login
After the system start up, in the following cases, the program will be in “log off” state:
a. The system default log off after the system running.
b. After login, then click “log off”
c. Minimize the main form, the system will be off state.
In the off state, click “login” button, the system will pop-up dialog box as follows.