Stacklayout issue in designer

[kgregg]

I have a stacklayout defined with a button on one layer and a label on another layer. Design view doesn't recognize it as a stacklayout - just displays the layer with the button. If I select the whole shell in design I don't get the small up/down arrows to let me switch between layers. If I click on the label then the button in the components, I see their properties but the design view doesn't change - stays as the button. At runtime, it works fine - I have a listener defined on the button click to switch to the other layer. It worked as expected at initial setup, but broke sometime later, probably about the time I setup the listener to switch layers. Is it likely that my code is confusing designer and it only knows about the single layer?

[Eric Clayberg]

Please post a test case showing exactly what you are doing.

[kgregg]

Code defines a label and a button, then a stacklayout and assigns topControl to the label. In designer, button shows and I can't get the label to show. At runtime, button shows as expected, then label shows when button is clicked as it should. (Button's image is a use agreement that they have to click thru to see the label, which is a logo.) Before I added the listener to the button, designer allowed me to select widgets and they would display and also gave me the up/down arrows in the shell display to change layers. Now, even if I comment the listener code, I still can't see the label in designer and it doesn't show the up/down layer select arrows.

Code: Select all

final StackLayout layout;
shlHello = new Shell();
final Label label = new Label(shlHello, SWT.NONE);
label.setImage(SWTResourceManager.getImage(StartupMenu.class, "LogoLarge.jpg"));
label.setAlignment(SWT.CENTER);
final Button btnok = new Button(shlHello, SWT.NONE);
btnok.setToolTipText("Please click the button to continue.");
btnok.setImage(SWTResourceManager.getImage(StartupMenu.class, "Agreement1.JPG"));
btnok.setLocation(0, 0);
btnok.setSize(752, 305);
btnok.addSelectionListener(new SelectionAdapter() {
   @Override
   public void widgetSelected(SelectionEvent e) {
   layout.topControl = label;
   shlHello.layout();
   }
});
shlHello.setSize(760, 352);
shlHello.setText("Hello");
layout = new StackLayout();
shlHello.setLayout( layout );
layout.topControl = btnok;

[Eric Clayberg]

The current parser likes the following...

Code: Select all

       Shell shlHello = new Shell();
       final StackLayout layout = new StackLayout();
       shlHello.setLayout( layout );

...but does not like this...

Code: Select all

       final StackLayout layout;
       ...
       Shell shlHello = new Shell();
       layout = new StackLayout();
       shlHello.setLayout( layout );

We have this fixed for the latest build. If you have a support contract, we can provide you with access to that now.

[kgregg]

No support contract - we're caught in the never-never land between Instantiations and Google!

[Eric Clayberg]

No support contract - we're caught in the never-never land between Instantiations and Google!

In that case, I would recommend changing the code to match the first pattern above.