How to notify parent frame?

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2 total messages Started by Dang Phan Fri, 17 Aug 2001 07:58

#207

Author: Dang Phan
Date: Fri, 17 Aug 2001 07:58

24 lines
2371 bytes

hi,

I've got a problem like this.

I have a 'Main' JFrame, which has buttons. I click on 'show Options' button,
another 'Options' JFrame appears. After I have selected all options in
'Options' JFrame, I then click 'Ok' button or 'Cancel' button. The 'Main'
JFrame needs to know whether I have clicked 'Ok' or 'Cancel' button, ie. it
has to wait until I dispose 'Options' JFrame.

I have 2 options to solve this problem:

1. In 'Main' JFrame, I will have a public function which 'Options' JFrame
will call when I click 'Ok' or 'Cancel' button. In this case, I have to pass
'this' pointer from 'Main' to 'Options' JFrame. The program will create a
circle, ie. in 'Main' I have one instance of 'Options' and vice versa.

2. I'll create a thread in 'Main', and continuously check for existence of
'Options'. This will consume a lot of resources.

Can anyone suggest a better solution? Thank you very much for your help.

Cheers,
Dang.

Re: How to notify parent frame?

#208

Author: Charles May
Date: Fri, 17 Aug 2001 13:20

30 lines
2622 bytes

It would be simpler to have your main application gui be the "parent"
JFrame and the Options gui be a modal JDialog instead of another
JFrame.


"Dang Phan" <dangphan@mosca.csse.monash.edu.au> wrote in message news:<9liio0$mov$2@towncrier.cc.monash.edu.au>...
> hi,
> 
> I've got a problem like this.
> 
> I have a 'Main' JFrame, which has buttons. I click on 'show Options' button,
> another 'Options' JFrame appears. After I have selected all options in
> 'Options' JFrame, I then click 'Ok' button or 'Cancel' button. The 'Main'
> JFrame needs to know whether I have clicked 'Ok' or 'Cancel' button, ie. it
> has to wait until I dispose 'Options' JFrame.
> 
> I have 2 options to solve this problem:
> 
> 1. In 'Main' JFrame, I will have a public function which 'Options' JFrame
> will call when I click 'Ok' or 'Cancel' button. In this case, I have to pass
> 'this' pointer from 'Main' to 'Options' JFrame. The program will create a
> circle, ie. in 'Main' I have one instance of 'Options' and vice versa.
> 
> 2. I'll create a thread in 'Main', and continuously check for existence of
> 'Options'. This will consume a lot of resources.
> 
> Can anyone suggest a better solution? Thank you very much for your help.
> 
> Cheers,
> Dang.

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