Try something like this:
// The size of the window.
Rectangle bounds = this.getBounds();
// How many rows of buttons.
int numOfRows = 100;
// How many buttons per row.
int numOfColumns = 50;
int buttonWidth = bounds.width / numOfRows;
int buttonHeight = bounds.height / numOfColumns;
int x = 0;
int y = 0;
for(int i = 0; i < numOfColumns; i++){
for(int j = 0; j < numOfRows; j++){
// Make a button
button.setBounds(x, y, buttonWidth, buttonHeight);
y += buttonHeight;
}
x += buttonWidth;
}
This will make all the buttons fit inside of your window.
Here's a link on rectangles, they come in pretty handy when doing things like this.
http://help.eclipse.org/helios/index.jsp?topic=%2Forg.eclipse.platform.doc.isv%2Freference%2Fapi%2Forg%2Feclipse%2Fswt%2Fgraphics%2FRectangle.html
Also, you can still use windowbuilder, infact I recommend you do. It really helps you to visualize the dimensions you want. AND you can also create stuff (buttons, lists, dropdowns... etc) manually with code and, assuming you put the variables where WindowBuilder would, it will still display them in the 'design' tab.
Hope this helps!
EDIT: I was kinda vague on how to make buttons using a loop
To make buttons with a loop you will need a buffer (to store a temporary button long enough to add to a list) and... a list :D.
This is how it should look:
Outside loop:
// The list to store your buttons in.
ArrayList<Button> buttons = new ArrayList<Button>();
// The empty button to use as a buffer.
Button button;
Inside loop (where the '//Make a button' comment is):
button = new Button(this, SWT.NONE);
buttons.add(button);
Now you have a list of all the buttons, and can easily access them and make changes such as change the buttons text like so;
buttons.get(indexOfButton).setText("SomeText");
EDIT:
Seeing as you're new to swt (and I couldn't get awt/JFrame to work) here's the full code.
import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.Rectangle;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
public class ButtonTest extends Shell {
/**
* Launch the application.
* @param args
*/
// Code starts here in main.
public static void main(String args[]) {
try {
Display display = Display.getDefault();
// Creates a window (shell) called "shell"
ButtonTest shell = new ButtonTest(display);
// These two lines start the shell.
shell.open();
shell.layout();
// Now we can start adding stuff to our shell.
// The size of the window.
Rectangle bounds = shell.getBounds();
// How many rows of buttons.
int numOfRows = 5;
// How many buttons per row.
int numOfColumns = 3;
int buttonWidth = bounds.width / numOfRows;
int buttonHeight = bounds.height / numOfColumns;
Button button;
int x = 0;
int y = 0;
for(int i = 0; i < numOfColumns; i++){
for(int j = 0; j < numOfRows; j++){
button = new Button(shell, SWT.NONE);
button.setBounds(x, y, buttonWidth, buttonHeight);
x += buttonWidth;
}
x = 0;
y += buttonHeight;
}
// This loop keeps the shell from killing itself the moment it's opened
while (!shell.isDisposed()) {
if (!display.readAndDispatch()) {
display.sleep();
}
}
} catch (Exception e) {
e.printStackTrace();
}
}
/**
* Create the shell.
* @param display
*/
public ButtonTest(Display display) {
super(display, SWT.SHELL_TRIM);
createContents();
}
/**
* Create contents of the shell.
*/
protected void createContents() {
setText("SWT Application");
setSize(800, 800);
}
@Override
protected void checkSubclass() {
// Disable the check that prevents subclassing of SWT components
}
Also, I made a little typo in my nested loop (and forgot to reset the x value to 0 after each row). It's fixed in this edit.
Also you will need to import swt for this to work.
Go here: http://www.eclipse.org/swt/ and download the latest version for your operating system, then go in eclipse, right click your project > Build Path > configure Build Path > Libraries tab > Add external JAR's > find the swt file you downloaded and click.
Sorry for such a long answer, hope it helps :D
