FormData Objects and FormAttachment Objects : FormLayout « SWT « Java Tutorial

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Java Tutorial » SWT » FormLayout

17. 94. 4. FormData Objects and FormAttachment Objects

FormData objects specify how controls should be laid out.
FormData objects define the preferred size and the attachments for four sides of the control.
FormAttachment objects control the position and size of the control.


import org.eclipse.swt.SWT;

import org.eclipse.swt.layout.FormLayout;

import org.eclipse.swt.widgets.Button;

import org.eclipse.swt.widgets.Display;

import org.eclipse.swt.widgets.Shell;



public class FormLayoutFormDataAttachment {

  public static void main(String[] args) {

    Display display = new Display();

    final Shell shell = new Shell(display);



    shell.setLayout(new FormLayout());

    

    Button button1 = new Button(shell, SWT.PUSH);

    button1.setText("button1");



    shell.setSize(450, 400);

    shell.open();



    while (!shell.isDisposed()) {

      if (!display.readAndDispatch()) {

        display.sleep();

      }

    }

    display.dispose();

  }

}

17. 94. FormLayout
	17. 94. 1.	Using FormLayouts
	17. 94. 2.	FormLayout: attach with left and right margin
	17. 94. 3.	FormLayout: attach each other
	17. 94. 4.	FormData Objects and FormAttachment Objects
	17. 94. 5.	FormData: width and height
	17. 94. 6.	FormLayout: spacing
	17. 94. 7.	To configure the attachment of each side
	17. 94. 8.	Attaching a Control to a Position in the Parent Composite
	17. 94. 9.	Specify the offset of the control side from the attachment position
	17. 94. 10.	Without FormAttachment objects
	17. 94. 11.	Specify attachments for all four sides of a control.
	17. 94. 12.	Attaching a Control to Another Control
	17. 94. 13.	Attaching to the Adjacent Side of Another Control
	17. 94. 14.	Attaching to the Specified Side of Another Control
	17. 94. 15.	Center a control on another control
	17. 94. 16.	Center control both horizontally and vertically
	17. 94. 17.	Use FormLayout to layout a dialog
	17. 94. 18.	Start with the upper-left button, attach the top and left edges to the window, offsetting by five pixels:
	17. 94. 19.	To create the upper-right three buttons, you reason that you can put them all in a composite with a grid layout, and attach the composite to your first button:
	17. 94. 20.	Attach the bottom button to the upper-left button and the window:
	17. 94. 21.	FormLayout Complex
	17. 94. 22.	FormLayout example snippet: create a simple dialog using form layout
	17. 94. 23.	FormLayout example snippet: center a label and single line text using a form layout
	17. 94. 24.	FormLayout example snippet: create a simple OK/CANCEL dialog using form layout

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