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Home » Eclipse Projects » Standard Widget Toolkit (SWT) » Help needed on FormAttachment
Help needed on FormAttachment [message #445377] Thu, 04 November 2004 16:26 Go to next message
Eclipse UserFriend
Originally posted by: hortiz.xxx.com

Hi,

Here is a sample code to illustrate my problem : I use a FormLayout for my
main composite (the "red" one) and I create a new Composite (the "green"
one) in it, using a FormData.

My problem is that I want the green composite to be as wide as its parent
composite.

I've tried to set some FormAttachment but I didn't manage to find the
solution.

Could you please help me,
Thanks
H.ORTIZ

import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.Color;
import org.eclipse.swt.graphics.RGB;
import org.eclipse.swt.layout.FormData;
import org.eclipse.swt.layout.FormLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;

public class FormAttachmentTest {

private static Display display;
private static Shell shell;

public static void main(String[] args) {

display = new Display ();
shell = new Shell (display);

shell.setBackground(new Color(display, new RGB(255,0,0)));
FormLayout formLayout = new FormLayout();
shell.setLayout(formLayout);

Composite composite = new Composite(shell, SWT.BORDER);
composite.setBackground(new Color(display, new RGB(0,255,0)));

FormData data = new FormData();
composite.setLayoutData(data);

shell.pack();
shell.setSize(800,600);
shell.open();

while (!shell.isDisposed ()) {
if (!display.readAndDispatch ())
display.sleep ();
}
display.dispose ();
}
}
Re: Help needed on FormAttachment [message #445387 is a reply to message #445377] Thu, 04 November 2004 18:20 Go to previous messageGo to next message
Steve Northover is currently offline Steve NorthoverFriend
Messages: 1636
Registered: July 2009
Senior Member
You need to set the form attachments. In this case, why would you use a form
at all? Why not use a FillLayout?

import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.Color;
import org.eclipse.swt.graphics.RGB;
import org.eclipse.swt.layout.FormAttachment;
import org.eclipse.swt.layout.FormData;
import org.eclipse.swt.layout.FormLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;

public class FormAttachmentTest {

private static Display display;

private static Shell shell;

public static void main(String[] args) {

display = new Display();
shell = new Shell(display);

shell.setBackground(new Color(display, new RGB(255, 0, 0)));
FormLayout formLayout = new FormLayout();
shell.setLayout(formLayout);

Composite composite = new Composite(shell, SWT.BORDER);
composite.setBackground(new Color(display, new RGB(0, 255, 0)));

FormData data = new FormData();
data.left = new FormAttachment (0);
data.right = new FormAttachment (100);
data.top = new FormAttachment (0);
data.bottom = new FormAttachment (100);
composite.setLayoutData(data);

shell.pack();
shell.setSize(800, 600);
shell.open();

while (!shell.isDisposed()) {
if (!display.readAndDispatch())
display.sleep();
}
display.dispose();
}
}


"HORTIZ" <hortiz@xxx.com> wrote in message news:cmdl6r$qgk$1@eclipse.org...
> Hi,
>
> Here is a sample code to illustrate my problem : I use a FormLayout for my
> main composite (the "red" one) and I create a new Composite (the "green"
> one) in it, using a FormData.
>
> My problem is that I want the green composite to be as wide as its parent
> composite.
>
> I've tried to set some FormAttachment but I didn't manage to find the
> solution.
>
> Could you please help me,
> Thanks
> H.ORTIZ
>
> import org.eclipse.swt.SWT;
> import org.eclipse.swt.graphics.Color;
> import org.eclipse.swt.graphics.RGB;
> import org.eclipse.swt.layout.FormData;
> import org.eclipse.swt.layout.FormLayout;
> import org.eclipse.swt.widgets.Composite;
> import org.eclipse.swt.widgets.Display;
> import org.eclipse.swt.widgets.Shell;
>
> public class FormAttachmentTest {
>
> private static Display display;
> private static Shell shell;
>
> public static void main(String[] args) {
>
> display = new Display ();
> shell = new Shell (display);
>
> shell.setBackground(new Color(display, new RGB(255,0,0)));
> FormLayout formLayout = new FormLayout();
> shell.setLayout(formLayout);
>
> Composite composite = new Composite(shell, SWT.BORDER);
> composite.setBackground(new Color(display, new RGB(0,255,0)));
>
> FormData data = new FormData();
> composite.setLayoutData(data);
>
> shell.pack();
> shell.setSize(800,600);
> shell.open();
>
> while (!shell.isDisposed ()) {
> if (!display.readAndDispatch ())
> display.sleep ();
> }
> display.dispose ();
> }
> }
>
>
>
>
Re: Help needed on FormAttachment [message #445388 is a reply to message #445377] Thu, 04 November 2004 18:21 Go to previous messageGo to next message
Stefan Zeiger is currently offline Stefan ZeigerFriend
Messages: 102
Registered: July 2009
Senior Member
HORTIZ wrote:

> Here is a sample code to illustrate my problem : I use a FormLayout for
> my main composite (the "red" one) and I create a new Composite (the
> "green" one) in it, using a FormData.
> My problem is that I want the green composite to be as wide as its
> parent composite.

Here's the correct FormData:

> FormData data = new FormData();
data.left = new FormAttachment(0);
data.right = new FormAttachment(100);
> composite.setLayoutData(data);

--
Stefan Zeiger http://www.szeiger.de http://www.novocode.com
My SWT controls: http://www.novocode.com/swt
Re: Help needed on FormAttachment [message #445406 is a reply to message #445387] Fri, 05 November 2004 08:14 Go to previous messageGo to next message
Eclipse UserFriend
Originally posted by: hortiz.xxx.com

Hi Steve,

If I use a FormLayout it is because my composite is hidden / shown at
runtime so I have adapted the sample code provided by Caroline MacLeod at
https://bugs.eclipse.org/bugs/show_bug.cgi?id=49426




Steve Northover wrote:

> You need to set the form attachments. In this case, why would you use a form
> at all? Why not use a FillLayout?

> import org.eclipse.swt.SWT;
> import org.eclipse.swt.graphics.Color;
> import org.eclipse.swt.graphics.RGB;
> import org.eclipse.swt.layout.FormAttachment;
> import org.eclipse.swt.layout.FormData;
> import org.eclipse.swt.layout.FormLayout;
> import org.eclipse.swt.widgets.Composite;
> import org.eclipse.swt.widgets.Display;
> import org.eclipse.swt.widgets.Shell;

> public class FormAttachmentTest {

> private static Display display;

> private static Shell shell;

> public static void main(String[] args) {

> display = new Display();
> shell = new Shell(display);

> shell.setBackground(new Color(display, new RGB(255, 0, 0)));
> FormLayout formLayout = new FormLayout();
> shell.setLayout(formLayout);

> Composite composite = new Composite(shell, SWT.BORDER);
> composite.setBackground(new Color(display, new RGB(0, 255, 0)));

> FormData data = new FormData();
> data.left = new FormAttachment (0);
> data.right = new FormAttachment (100);
> data.top = new FormAttachment (0);
> data.bottom = new FormAttachment (100);
> composite.setLayoutData(data);

> shell.pack();
> shell.setSize(800, 600);
> shell.open();

> while (!shell.isDisposed()) {
> if (!display.readAndDispatch())
> display.sleep();
> }
> display.dispose();
> }
> }


> "HORTIZ" <hortiz@xxx.com> wrote in message news:cmdl6r$qgk$1@eclipse.org...
>> Hi,
>>
>> Here is a sample code to illustrate my problem : I use a FormLayout for my
>> main composite (the "red" one) and I create a new Composite (the "green"
>> one) in it, using a FormData.
>>
>> My problem is that I want the green composite to be as wide as its parent
>> composite.
>>
>> I've tried to set some FormAttachment but I didn't manage to find the
>> solution.
>>
>> Could you please help me,
>> Thanks
>> H.ORTIZ
>>
>> import org.eclipse.swt.SWT;
>> import org.eclipse.swt.graphics.Color;
>> import org.eclipse.swt.graphics.RGB;
>> import org.eclipse.swt.layout.FormData;
>> import org.eclipse.swt.layout.FormLayout;
>> import org.eclipse.swt.widgets.Composite;
>> import org.eclipse.swt.widgets.Display;
>> import org.eclipse.swt.widgets.Shell;
>>
>> public class FormAttachmentTest {
>>
>> private static Display display;
>> private static Shell shell;
>>
>> public static void main(String[] args) {
>>
>> display = new Display ();
>> shell = new Shell (display);
>>
>> shell.setBackground(new Color(display, new RGB(255,0,0)));
>> FormLayout formLayout = new FormLayout();
>> shell.setLayout(formLayout);
>>
>> Composite composite = new Composite(shell, SWT.BORDER);
>> composite.setBackground(new Color(display, new RGB(0,255,0)));
>>
>> FormData data = new FormData();
>> composite.setLayoutData(data);
>>
>> shell.pack();
>> shell.setSize(800,600);
>> shell.open();
>>
>> while (!shell.isDisposed ()) {
>> if (!display.readAndDispatch ())
>> display.sleep ();
>> }
>> display.dispose ();
>> }
>> }
>>
>>
>>
>>
Re: Help needed on FormAttachment [message #445408 is a reply to message #445388] Fri, 05 November 2004 08:18 Go to previous message
Eclipse UserFriend
Originally posted by: hortiz.xxx.com

Thanks a lot Stefan, it works fine now


Stefan Zeiger wrote:

> HORTIZ wrote:

>> Here is a sample code to illustrate my problem : I use a FormLayout for
>> my main composite (the "red" one) and I create a new Composite (the
>> "green" one) in it, using a FormData.
>> My problem is that I want the green composite to be as wide as its
>> parent composite.

> Here's the correct FormData:

>> FormData data = new FormData();
> data.left = new FormAttachment(0);
> data.right = new FormAttachment(100);
>> composite.setLayoutData(data);
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