Minimisation and controlling button clicks in swings

Question

Hello All,
I had some problem in swings.
Here I am giving my problem in detail.
1st ......
On one window named as "Main Screen" contains two buttons.
Say Button1 and Button2.
By clicking on Button1 another window will be opened named as "Sub Screen1".
By clicking on Button2 another window will be opened named as "Sub Screen2".
I need clarifaction on minimisation.
If I minimise my main window "Main Screen" all windows which are opened have to be minimised.
What I mean is if Main window is minimised all subwindows are also to be minimised.
2nd ........
When Button1 window "Sub Screen1" is opened by clicking again on Button1 another window is opening.
How to control the next click until the first have to close.
If any one will have any idea please give reply as soon as possible.
ThankYou All,
Rajiv.V

Answer 1

Hi Rajiv,
I assume you are using JFrames in your app.
You could use the Windowiconified method for your MainScreen and call SubScreen1.setState(Frame.ICONIFIED) and SubScreen2.setState(Frame.ICONIFIED). When you have pressed Button1 the instance of SubScreen1 is not null so you can do sth like this:Button1_actionPerformed(ActionEvent e()){
  if (SubScreen1 == null)
     SubScreen1 = new Frame(..);// or new SubScreen()
  else
     SubScreen1.setvisible(true);
}Phil