StackPane don't fill free space in the window

Question

Hi all!
I'm facing an issue when trying to resize (even just filling) the extra space on a window with a "frameworked" node.
Explaining:
I'm using this framework to manage multiple scenes: https://blogs.oracle.com/acaicedo/entry/managing_multiple_screens_in_javafx1
It works fine, but I'm not able to se the "inner" node to expand to fill all the window. I'm able to set min Width and Height to reach the window boundaries, but I'd like to set a "fullscreen" mode to the node and let the JavaFX do the trick. Is this possible?
I'm attaching an image to help the explanation. Basically what I want is fill the green area (Controlled Screene that extends StackPane) with the blue/pink (Gridpane with bottomAnchor="0.0" AnchorPane.leftAnchor="0.0" AnchorPane.rightAnchor="0.0" AnchorPane.topAnchor="0.0") node.
I already tried to extend the framework class to the Anchorpane node but didn't works.
Please follow this link to the image:
https://dl.dropboxusercontent.com/u/25373134/screen.png
Tks in advance!
André Castro

Answer 1

Looking at the blog post you linked, it has the following code:
Group root = new Group();
root.getChildren().addAll(mainContainer);
Scene scene = new Scene(root); This is likely the cause of your issue.
A Group is not a resizable pane, so it does not expand to fit it's surrounding area.
Try making the root a StackPane instead and see if it works.
StackPane root = new StackPane();
root.getChildren().addAll(mainContainer);
Scene scene = new Scene(root); If this does not fix your issue, please post the complete contents of the FXML file you are using and a test harness application which you use to display it.