Trying to set the size/location of a button in a tab for SWT - swt

Question

This should be pretty simple but this is the first time I've worked with SWT. This is what I have so far.
public class TabsTest {
private Shell shell;
private CTabFolder folder;
public TabsTest(Display display){
shell = new Shell(display);
shell.setText("TabsTest");
shell.setLayout(new FillLayout());
CTabFolder folder = new CTabFolder(shell, SWT.CLOSE | SWT.BOTTOM);
folder.setUnselectedCloseVisible(false);
folder.setSimple(false);
initUI(folder);
shell.pack();
shell.setBounds(500, 500, 400, 500);
shell.open ();
while(!shell.isDisposed()){
if(!display.readAndDispatch())
display.sleep();
}
}
public void initUI(CTabFolder folder){
CTabItem NFL = new CTabItem(folder, SWT.NONE);
NFL.setText("NFL Bets");
Button okButton = new Button(folder, SWT.PUSH);
okButton.setText("OK");
okButton.setSize(10,10);
NFL.setControl(okButton);
CTabItem NBA = new CTabItem(folder,SWT.NONE);
NBA.setText("NBA Bets");
CTabItem CFB = new CTabItem(folder,SWT.NONE);
CFB.setText("CFB Bets");
folder.setSize(800,500);
}
public static void main (String [] args) {
Display display = new Display();
new TabsTest(display);
display.dispose();
}
}
What this currently gives me is this....
How would I make this a small button in the bottom right corner? Or just in general make it smaller and move it somewhere.

Answer 1

Since you are using a FillLayout the control takes up the entire space available. What you need is a different kind of a layout. I will suggest you to read this article, it will be a good start.
I generally prefer GridLayout as it is quite easy to use and it fulfills most needs.
Edited: Modifying your code to use GridLayout
public class TabsTest {
private Shell shell;
private CTabFolder folder;
public TabsTest(Display display) {
shell = new Shell(display);
shell.setText("TabsTest");
shell.setLayout(new GridLayout());
CTabFolder folder = new CTabFolder(shell, SWT.CLOSE | SWT.BOTTOM);
folder.setUnselectedCloseVisible(false);
folder.setSimple(false);
folder.setLayoutData(new GridData(GridData.FILL_BOTH));
initUI(folder);
shell.pack();
shell.setBounds(500, 500, 400, 500);
shell.open();
while (!shell.isDisposed()) {
if (!display.readAndDispatch())
display.sleep();
}
}
public void initUI(CTabFolder folder) {
CTabItem NFL = new CTabItem(folder, SWT.NONE);
NFL.setText("NFL Bets");
Composite nflParent = new Composite(folder, SWT.NONE);
nflParent.setBackground(folder.getDisplay().getSystemColor(SWT.COLOR_BLUE));
nflParent.setLayout(new GridLayout());
Button okButton = new Button(nflParent, SWT.PUSH);
okButton.setText("OK");
GridData gd = new GridData();
gd.verticalAlignment = GridData.END;
gd.horizontalAlignment = GridData.END;
gd.grabExcessHorizontalSpace = true;
gd.grabExcessVerticalSpace = true;
okButton.setLayoutData(gd);
NFL.setControl(nflParent);
CTabItem NBA = new CTabItem(folder, SWT.NONE);
NBA.setText("NBA Bets");
CTabItem CFB = new CTabItem(folder, SWT.NONE);
CFB.setText("CFB Bets");
folder.setSize(800, 500);
}
public static void main(String[] args) {
Display display = new Display();
new TabsTest(display);
display.dispose();
}
}