Foreword
In software development, we will use global variables, that in PB, how to use global variables?
demand
In the login screen, you need to enter a user name, after the interface, you need to use the username login screen input.
achieve
1. declare global variables
Double-click the login screen, declare global variables.
2. Assignment to global variables
Write code at the login screen, to a global variable.
GUserName = xm
3. The use of global variables
To use global variables in the future where it can be used directly.
// 命名窗体title
this.title = "考生 " + GUserName + " 实践考试科目"
effect
