How to make GUI disappear when you click on a button?

Questions & Answers
1

I don’t know, how to make the gui.button to disappear when i tap on the gui.button.
Like when i push a button i want to create a textfield where you can type in the Username, like a Login.
Can someone to tell me, how to type the code in C#. like a sample.

2

You can do it by using a bool.

bool UsernameInput = false;
Rect rect = new Rect(0,0,100,25);
string userName = "";

void OnGUI()
{
  if(UsernameInput)
  {
    userName = GUI.TextField(rect,userName);
  }
  else
  {
    if(GUI.Button(rect,"Log in"))
    {
      UsernameInput = true;
    }
  }
 }