How To Activate this button

[Johan Liebert]

How to Activate The Close button for closing the form

[Campbell Ritchie]

Welcome to the Ranch
I shall move you to our GUIs forum, where this question will fit better. Please supply full details about how you created that GUI. What class did you make the display from? Was it a JWindow?

[Paul Clapham]

As far as I can see (and I did ask Google Translate the meaning of those buttons) your screen doesn't have a Close button. So there's nothing to activate.

Although, as Campbell mentioned, some details about the design of the form etc would be useful. The picture doesn't explain much.

[Carey Brown]

"Close" is the last menu item in what would have been the "File" menu.

[Paul Clapham]

Oh right, and I see it's greyed out. So you'd have to change whatever causes the greying out. Or better, hide that menu with all of its useless options and add a Close button to go along with the other buttons.