[Converting gridbag layout to frame layout application]

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5 total messages Started by Thomas F Wed, 13 Oct 1999 00:00

#1035

Author: Thomas F
Date: Wed, 13 Oct 1999 00:00

19 lines
1125 bytes

Hi ,

I have just developed a gridbag layout for an email application, and
would like to transport that to a frame application - 

I have tried the following with no success 

Frame f;
GridBagLayou gbLayout;

f = new Frame("FrameMail 1.40"); 
f.setLayout(gbLayout); 

f.add(c);

where c is the individual components added to the gridbag at each
interval.

Any ideas would be greatly appericated.

Re: [Converting gridbag layout to frame layout application]

#1036

Author: Tavis Elliott
Date: Wed, 13 Oct 1999 00:00

30 lines
1333 bytes

For JFrames, you need to add Components to its ContentPane, and not to
the JFrame itself.

Try:

f.getContentPane().add( ... );

Tavis

Thomas F wrote:

> Hi ,
>
> I have just developed a gridbag layout for an email application, and
> would like to transport that to a frame application -
>
> I have tried the following with no success
>
> Frame f;
> GridBagLayou gbLayout;
>
> f = new Frame("FrameMail 1.40");
> f.setLayout(gbLayout);
>
> f.add(c);
>
> where c is the individual components added to the gridbag at each
> interval.
>
> Any ideas would be greatly appericated.

Re: [Converting gridbag layout to frame layout application]

#1037

Author: Thomas F
Date: Wed, 13 Oct 1999 00:00

43 lines
1679 bytes

Thanks ... I will give that a try, but from memory, JFrame is part of
Swing? 

I am not allowed to use Swing .... as part of the assignment
requirements.

Thankx


On Wed, 13 Oct 1999 11:43:11 -0700, Tavis Elliott <tavise@evergo.net>
wrote:

>For JFrames, you need to add Components to its ContentPane, and not to
>the JFrame itself.
>
>Try:
>
>f.getContentPane().add( ... );
>
>Tavis
>
>Thomas F wrote:
>
>> Hi ,
>>
>> I have just developed a gridbag layout for an email application, and
>> would like to transport that to a frame application -
>>
>> I have tried the following with no success
>>
>> Frame f;
>> GridBagLayou gbLayout;
>>
>> f = new Frame("FrameMail 1.40");
>> f.setLayout(gbLayout);
>>
>> f.add(c);
>>
>> where c is the individual components added to the gridbag at each
>> interval.
>>
>> Any ideas would be greatly appericated.
>

Re: [Converting gridbag layout to frame layout application]

#1038

Author: William Adcock
Date: Wed, 13 Oct 1999 00:00

24 lines
1358 bytes

change "GridBagLayou gbLayout;" to "GridBagLayout gbLayout = new
GridBagLayout(...)". Right now gbLayout is a null pointer.

Thomas F wrote:

> Hi ,
>
> I have just developed a gridbag layout for an email application, and
> would like to transport that to a frame application -
>
> I have tried the following with no success
>
> Frame f;
> GridBagLayou gbLayout;
>
> f = new Frame("FrameMail 1.40");
> f.setLayout(gbLayout);
>
> f.add(c);
>
> where c is the individual components added to the gridbag at each
> interval.
>
> Any ideas would be greatly appericated.

Re: [Converting gridbag layout to frame layout application]

#1039

Author: DAVID ROBERTSON
Date: Thu, 14 Oct 1999 00:00

14 lines
1045 bytes

On Wed, 13 Oct 1999, Thomas F wrote:

> Frame f;
> GridBagLayou gbLayout;
> 
> f = new Frame("FrameMail 1.40"); 
> f.setLayout(gbLayout); 
> 
> f.add(c);
> 

I dunno whether you just didn't type it or not, but above you've
forgotten to construct the GridBagLayout after you declared it.  If
so, you'll end up with a nullPointerException.

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