Java by API/org.eclipse.swt.widgets/Combo

Combo: addSelectionListener(SelectionListener lis)

   <source lang="java">

import org.eclipse.swt.SWT; import org.eclipse.swt.events.SelectionAdapter; import org.eclipse.swt.events.SelectionEvent; import org.eclipse.swt.widgets.rubo; import org.eclipse.swt.widgets.Display; import org.eclipse.swt.widgets.Shell; public class MainClass {

 public static void main(String[] a) {
   Display d = new Display();
   Shell s = new Shell(d);
   s.setSize(250, 250);
   s.setText("A Combo Example");
   final Combo c1 = new Combo(s, SWT.READ_ONLY);
   c1.setBounds(50, 50, 150, 65);
   final Combo c2 = new Combo(s, SWT.READ_ONLY);
   c2.setBounds(50, 85, 150, 65);
   c2.setEnabled(false);
   String items[] = { "Item One", "Item Two", "Item Three", "Item Four", "Item Five" };
   c1.setItems(items);
   c1.addSelectionListener(new SelectionAdapter() {
     public void widgetSelected(SelectionEvent e) {
       if (c1.getText().equals("Item One")) {
         String newItems[] = { "A", "B", "C" };
         c2.setItems(newItems);
         c2.setEnabled(true);
       } else if (c1.getText().equals("Item Two")) {
         String newItems[] = { "A", "B", "C" };
         c2.setItems(newItems);
         c2.setEnabled(true);
       } else {
         c2.add("Not Applicable");
         c2.setText("Not Applicable");
       }
     }
   });
   s.open();
   while (!s.isDisposed()) {
     if (!d.readAndDispatch())
       d.sleep();
   }
   d.dispose();
 }

}

      </source>
   
  
 
  

Combo: add(String sel)

   <source lang="java">

import org.eclipse.swt.SWT; import org.eclipse.swt.events.SelectionAdapter; import org.eclipse.swt.events.SelectionEvent; import org.eclipse.swt.widgets.rubo; import org.eclipse.swt.widgets.Display; import org.eclipse.swt.widgets.Shell; public class MainClass {

 public static void main(String[] a) {
   Display d = new Display();
   Shell s = new Shell(d);
   s.setSize(250, 250);
   s.setText("A Combo Example");
   final Combo c1 = new Combo(s, SWT.READ_ONLY);
   c1.setBounds(50, 50, 150, 65);
   final Combo c2 = new Combo(s, SWT.READ_ONLY);
   c2.setBounds(50, 85, 150, 65);
   c2.setEnabled(false);
   String items[] = { "Item One", "Item Two", "Item Three", "Item Four", "Item Five" };
   c1.setItems(items);
   c1.addSelectionListener(new SelectionAdapter() {
     public void widgetSelected(SelectionEvent e) {
       if (c1.getText().equals("Item One")) {
         String newItems[] = { "A", "B", "C" };
         c2.setItems(newItems);
         c2.setEnabled(true);
       } else if (c1.getText().equals("Item Two")) {
         String newItems[] = { "A", "B", "C" };
         c2.setItems(newItems);
         c2.setEnabled(true);
       } else {
         c2.add("Not Applicable");
         c2.setText("Not Applicable");
       }
     }
   });
   s.open();
   while (!s.isDisposed()) {
     if (!d.readAndDispatch())
       d.sleep();
   }
   d.dispose();
 }

}

      </source>
   
  
 
  

Combo: getItems()

   <source lang="java">

import org.eclipse.swt.SWT; import org.eclipse.swt.events.KeyEvent; import org.eclipse.swt.events.KeyListener; import org.eclipse.swt.layout.RowLayout; import org.eclipse.swt.widgets.rubo; import org.eclipse.swt.widgets.Display; import org.eclipse.swt.widgets.Shell; public class MainClass {

 public static void main(String[] a) {
   Display d = new Display();
   Shell s = new Shell(d);
   s.setSize(250, 200);
   s.setText("A KeyListener Example");
   s.setLayout(new RowLayout());
   final Combo c = new Combo(s, SWT.DROP_DOWN | SWT.BORDER);
   c.add("A");
   c.add("B");
   c.add("C");
   c.add("D");
   c.addKeyListener(new KeyListener() {
     String selectedItem = "";
     public void keyPressed(KeyEvent e) {
       if (c.getText().length() > 0) {
         return;
       }
       String key = Character.toString(e.character);
       String[] items = c.getItems();
       for (int i = 0; i < items.length; i++) {
         if (items[i].toLowerCase().startsWith(key.toLowerCase())) {
           c.select(i);
           selectedItem = items[i];
           return;
         }
       }
     }
     public void keyReleased(KeyEvent e) {
       if (selectedItem.length() > 0)
         c.setText(selectedItem);
       selectedItem = "";
     }
   });
   s.open();
   while (!s.isDisposed()) {
     if (!d.readAndDispatch())
       d.sleep();
   }
   d.dispose();
 }

}

      </source>
   
  
 
  

Combo: getText()

   <source lang="java">

import org.eclipse.swt.SWT; import org.eclipse.swt.events.SelectionAdapter; import org.eclipse.swt.events.SelectionEvent; import org.eclipse.swt.widgets.rubo; import org.eclipse.swt.widgets.Display; import org.eclipse.swt.widgets.Shell; public class MainClass {

 public static void main(String[] a) {
   Display d = new Display();
   Shell s = new Shell(d);
   s.setSize(250, 250);
   s.setText("A Combo Example");
   final Combo c1 = new Combo(s, SWT.READ_ONLY);
   c1.setBounds(50, 50, 150, 65);
   final Combo c2 = new Combo(s, SWT.READ_ONLY);
   c2.setBounds(50, 85, 150, 65);
   c2.setEnabled(false);
   String items[] = { "Item One", "Item Two", "Item Three", "Item Four", "Item Five" };
   c1.setItems(items);
   c1.addSelectionListener(new SelectionAdapter() {
     public void widgetSelected(SelectionEvent e) {
       if (c1.getText().equals("Item One")) {
         String newItems[] = { "A", "B", "C" };
         c2.setItems(newItems);
         c2.setEnabled(true);
       } else if (c1.getText().equals("Item Two")) {
         String newItems[] = { "A", "B", "C" };
         c2.setItems(newItems);
         c2.setEnabled(true);
       } else {
         c2.add("Not Applicable");
         c2.setText("Not Applicable");
       }
     }
   });
   s.open();
   while (!s.isDisposed()) {
     if (!d.readAndDispatch())
       d.sleep();
   }
   d.dispose();
 }

}

      </source>
   
  
 
  

Combo: select(int index)

   <source lang="java">

import org.eclipse.swt.SWT; import org.eclipse.swt.events.KeyEvent; import org.eclipse.swt.events.KeyListener; import org.eclipse.swt.layout.RowLayout; import org.eclipse.swt.widgets.rubo; import org.eclipse.swt.widgets.Display; import org.eclipse.swt.widgets.Shell; public class MainClass {

 public static void main(String[] a) {
   Display d = new Display();
   Shell s = new Shell(d);
   s.setSize(250, 200);
   s.setText("A KeyListener Example");
   s.setLayout(new RowLayout());
   final Combo c = new Combo(s, SWT.DROP_DOWN | SWT.BORDER);
   c.add("A");
   c.add("B");
   c.add("C");
   c.add("D");
   c.addKeyListener(new KeyListener() {
     String selectedItem = "";
     public void keyPressed(KeyEvent e) {
       if (c.getText().length() > 0) {
         return;
       }
       String key = Character.toString(e.character);
       String[] items = c.getItems();
       for (int i = 0; i < items.length; i++) {
         if (items[i].toLowerCase().startsWith(key.toLowerCase())) {
           c.select(i);
           selectedItem = items[i];
           return;
         }
       }
     }
     public void keyReleased(KeyEvent e) {
       if (selectedItem.length() > 0)
         c.setText(selectedItem);
       selectedItem = "";
     }
   });
   s.open();
   while (!s.isDisposed()) {
     if (!d.readAndDispatch())
       d.sleep();
   }
   d.dispose();
 }

}

      </source>
   
  
 
  

Combo: setEnabled(boolean b)

   <source lang="java">

import org.eclipse.swt.SWT; import org.eclipse.swt.events.SelectionAdapter; import org.eclipse.swt.events.SelectionEvent; import org.eclipse.swt.widgets.rubo; import org.eclipse.swt.widgets.Display; import org.eclipse.swt.widgets.Shell; public class MainClass {

 public static void main(String[] a) {
   Display d = new Display();
   Shell s = new Shell(d);
   s.setSize(250, 250);
   s.setText("A Combo Example");
   final Combo c1 = new Combo(s, SWT.READ_ONLY);
   c1.setBounds(50, 50, 150, 65);
   final Combo c2 = new Combo(s, SWT.READ_ONLY);
   c2.setBounds(50, 85, 150, 65);
   c2.setEnabled(false);
   String items[] = { "Item One", "Item Two", "Item Three", "Item Four", "Item Five" };
   c1.setItems(items);
   c1.addSelectionListener(new SelectionAdapter() {
     public void widgetSelected(SelectionEvent e) {
       if (c1.getText().equals("Item One")) {
         String newItems[] = { "A", "B", "C" };
         c2.setItems(newItems);
         c2.setEnabled(true);
       } else if (c1.getText().equals("Item Two")) {
         String newItems[] = { "A", "B", "C" };
         c2.setItems(newItems);
         c2.setEnabled(true);
       } else {
         c2.add("Not Applicable");
         c2.setText("Not Applicable");
       }
     }
   });
   s.open();
   while (!s.isDisposed()) {
     if (!d.readAndDispatch())
       d.sleep();
   }
   d.dispose();
 }

}

      </source>
   
  
 
  

Combo: setItems(String[] values)

   <source lang="java">

import org.eclipse.swt.SWT; import org.eclipse.swt.widgets.rubo; import org.eclipse.swt.widgets.Display; import org.eclipse.swt.widgets.Shell; public class MainClass {

 public static void main(String[] a) {
   Display d = new Display();
   Shell s = new Shell(d);
   s.setSize(250, 250);
   s.setText("A Combo Example");
   final Combo c = new Combo(s, SWT.READ_ONLY);
   c.setBounds(50, 50, 150, 65);
   String items[] = { "Item One", "Item Two", "Item Three", "Item Four", "Item Five" };
   c.setItems(items);
   s.open();
   while (!s.isDisposed()) {
     if (!d.readAndDispatch())
       d.sleep();
   }
   d.dispose();
 }

}

      </source>
   
  
 
  

new Combo(Composite parent, int style)(SWT.DROP_DOWN | SWT.BORDER)

   <source lang="java">

import org.eclipse.swt.SWT; import org.eclipse.swt.events.KeyEvent; import org.eclipse.swt.events.KeyListener; import org.eclipse.swt.layout.RowLayout; import org.eclipse.swt.widgets.rubo; import org.eclipse.swt.widgets.Display; import org.eclipse.swt.widgets.Shell; public class MainClass {

 public static void main(String[] a) {
   Display d = new Display();
   Shell s = new Shell(d);
   s.setSize(250, 200);
   s.setText("A KeyListener Example");
   s.setLayout(new RowLayout());
   final Combo c = new Combo(s, SWT.DROP_DOWN | SWT.BORDER);
   c.add("A");
   c.add("B");
   c.add("C");
   c.add("D");
   c.addKeyListener(new KeyListener() {
     String selectedItem = "";
     public void keyPressed(KeyEvent e) {
       if (c.getText().length() > 0) {
         return;
       }
       String key = Character.toString(e.character);
       String[] items = c.getItems();
       for (int i = 0; i < items.length; i++) {
         if (items[i].toLowerCase().startsWith(key.toLowerCase())) {
           c.select(i);
           selectedItem = items[i];
           return;
         }
       }
     }
     public void keyReleased(KeyEvent e) {
       if (selectedItem.length() > 0)
         c.setText(selectedItem);
       selectedItem = "";
     }
   });
   s.open();
   while (!s.isDisposed()) {
     if (!d.readAndDispatch())
       d.sleep();
   }
   d.dispose();
 }

}

      </source>
   
  
 
  

new Combo(Shell shell, SWT.DROP_DOWN)

   <source lang="java">

import org.eclipse.swt.SWT; import org.eclipse.swt.layout.RowLayout; import org.eclipse.swt.widgets.rubo; import org.eclipse.swt.widgets.Display; import org.eclipse.swt.widgets.Shell; public class MainClass {

 public static void main(String[] a) {
   final String[] ITEMS = { "A", "B", "C", "D", "E"};
   Display display = new Display();
   Shell shell = new Shell(display);
   shell.setLayout(new RowLayout());
   // Create a drop-down combo
   Combo combo = new Combo(shell, SWT.DROP_DOWN);
   combo.setItems(ITEMS);
   // Create a read only combo
   Combo readOnly = new Combo(shell, SWT.DROP_DOWN | SWT.READ_ONLY);
   readOnly.setItems(ITEMS);
   // Create a "simple" combo
   Combo simple = new Combo(shell, SWT.SIMPLE);
   simple.setItems(ITEMS);
   shell.open();
   while (!shell.isDisposed()) {
     if (!display.readAndDispatch()) {
       display.sleep();
     }
   }
   display.dispose();
 }

}

      </source>
   
  
 
  

new Combo(Shell shell, SWT.DROP_DOWN | SWT.READ_ONLY)

   <source lang="java">

import org.eclipse.swt.SWT; import org.eclipse.swt.layout.RowLayout; import org.eclipse.swt.widgets.rubo; import org.eclipse.swt.widgets.Display; import org.eclipse.swt.widgets.Shell; public class MainClass {

 public static void main(String[] a) {
   final String[] ITEMS = { "A", "B", "C", "D", "E"};
   Display display = new Display();
   Shell shell = new Shell(display);
   shell.setLayout(new RowLayout());
   // Create a drop-down combo
   Combo combo = new Combo(shell, SWT.DROP_DOWN);
   combo.setItems(ITEMS);
   // Create a read only combo
   Combo readOnly = new Combo(shell, SWT.DROP_DOWN | SWT.READ_ONLY);
   readOnly.setItems(ITEMS);
   // Create a "simple" combo
   Combo simple = new Combo(shell, SWT.SIMPLE);
   simple.setItems(ITEMS);
   shell.open();
   while (!shell.isDisposed()) {
     if (!display.readAndDispatch()) {
       display.sleep();
     }
   }
   display.dispose();
 }

}

      </source>
   
  
 
  

new Combo(Shell shell, SWT.SIMPLE)

   <source lang="java">

import org.eclipse.swt.SWT; import org.eclipse.swt.layout.RowLayout; import org.eclipse.swt.widgets.rubo; import org.eclipse.swt.widgets.Display; import org.eclipse.swt.widgets.Shell; public class MainClass {

 public static void main(String[] a) {
   final String[] ITEMS = { "A", "B", "C", "D", "E"};
   Display display = new Display();
   Shell shell = new Shell(display);
   shell.setLayout(new RowLayout());
   // Create a drop-down combo
   Combo combo = new Combo(shell, SWT.DROP_DOWN);
   combo.setItems(ITEMS);
   // Create a read only combo
   Combo readOnly = new Combo(shell, SWT.DROP_DOWN | SWT.READ_ONLY);
   readOnly.setItems(ITEMS);
   // Create a "simple" combo
   Combo simple = new Combo(shell, SWT.SIMPLE);
   simple.setItems(ITEMS);
   shell.open();
   while (!shell.isDisposed()) {
     if (!display.readAndDispatch()) {
       display.sleep();
     }
   }
   display.dispose();
 }

}

      </source>
   
  
 
  

new Combo(Shell s, SWT.READ_ONLY)

   <source lang="java">

import org.eclipse.swt.SWT; import org.eclipse.swt.widgets.rubo; import org.eclipse.swt.widgets.Display; import org.eclipse.swt.widgets.Shell; public class MainClass {

 public static void main(String[] a) {
   Display d = new Display();
   Shell s = new Shell(d);
   s.setSize(250, 250);
   s.setText("A Combo Example");
   final Combo c = new Combo(s, SWT.READ_ONLY);
   c.setBounds(50, 50, 150, 65);
   String items[] = { "Item One", "Item Two", "Item Three", "Item Four", "Item Five" };
   c.setItems(items);
   s.open();
   while (!s.isDisposed()) {
     if (!d.readAndDispatch())
       d.sleep();
   }
   d.dispose();
 }

}

      </source>