Examples of org.eclipse.swt.events.KeyListener

org.eclipse.swt.events.KeyListener
Classes which implement this interface provide methods that deal with the events that are generated as keys are pressed on the system keyboard.
After creating an instance of a class that implements this interface it can be added to a control using the addKeyListener method and removed using the removeKeyListener method. When a key is pressed or released, the appropriate method will be invoked.
@see KeyAdapter @see KeyEvent

        fText.setLayoutData(gd);
        fText.setForeground(parent.getDisplay().getSystemColor(SWT.COLOR_INFO_FOREGROUND));
        fText.setBackground(parent.getDisplay().getSystemColor(SWT.COLOR_INFO_BACKGROUND));
        fText.setFont(JFaceResources.getFont(symbolicFontName));


        fText.addKeyListener(new KeyListener() {


            @Override
            public void keyPressed(final KeyEvent e) {
                if (e.character == 0x1B) {
                    fShell.dispose();

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     */
    private void createUIListenersTreeViewer() {
        // Get the underlying tree widget
        final Tree tree = fTreeViewer.getTree();
        // Handle key events
        tree.addKeyListener(new KeyListener() {
            @Override
            public void keyPressed(final KeyEvent e) {
                if (e.character == 0x1B) {
                    // Dispose on ESC key press
                    dispose();

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    /**
     *
     */
    private void createUIListenersFilterText() {
        // Handle key events
        fFilterText.addKeyListener(new KeyListener() {
            @Override
            public void keyPressed(final KeyEvent e) {
                if (e.keyCode == 0x0D) {
                    // Return key was pressed
                    gotoSelectedElement();

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            @Override
            public void modifyText(final ModifyEvent e) {
                dialogChanged();
            }
        });
        arityText.addKeyListener(new KeyListener() {


            @Override
            public void keyPressed(final KeyEvent e) {
                fWizPage.gettingInput = true;
            }

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                } catch (final Exception e) {
                    showButton.setEnabled(false);
                }
            }
        });
        traceIndexField.addKeyListener(new KeyListener() {


            @Override
            public void keyReleased(final KeyEvent e) {
                if (e.keyCode == SWT.CR && correctInput) {
                    doSelection();

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     * this is a workaround for the quickdiff assertion if nothing was changed, how to do this
     * better ? is this the right way ?
     */
    showChangeInformation(false);


    getSourceViewer().getTextWidget().addKeyListener(new KeyListener() {
      public void keyPressed(KeyEvent e) {
        int newCaretOffset = getSourceViewer().getTextWidget().getCaretOffset();


        if (newCaretOffset != mCursorPosition) {
          mCursorPosition = newCaretOffset;

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    private boolean mIsActive;


    private AnnotationFS mCandidate;


    FeatureStructureDragListener(final StyledText textWidget) {
      textWidget.addKeyListener(new KeyListener() {
        public void keyPressed(KeyEvent e) {
          if (e.keyCode == SWT.ALT) {
            mIsActive = true;


            textWidget.setCursor(Display.getCurrent().getSystemCursor(SWT.CURSOR_HAND));

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    final TreeViewer typeTree = new TreeViewer(composite, SWT.SINGLE | SWT.V_SCROLL);
    typeTree.getControl().setLayoutData(new GridData(GridData.FILL_HORIZONTAL |
            GridData.FILL_VERTICAL));


    filterText.addKeyListener(new KeyListener() {


      public void keyPressed(KeyEvent e) {
        if (e.keyCode == SWT.ARROW_DOWN || e.keyCode == SWT.ARROW_UP) {
          typeTree.getControl().setFocus();
        }

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                mActions.updateActionBars();
            }
        });
        
        mTreeViewer.getTree().addKeyListener(new KeyListener(){


      public void keyPressed(KeyEvent e) {
        mActions.handleKeyPressed(e);
      }

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        txtStyleId = new Text (compositeStyleId, SWT.BORDER);
        txtStyleId.setBounds(10, 10, 200, 200);
        txtStyleId.setText(Messages.Wizard_CloudMade_DefaultStyleId);
        
        txtStyleId.addKeyListener(new KeyListener(){
            public void keyPressed(KeyEvent event) {
                if ((event.keyCode == SWT.CR) || (event.keyCode == SWT.KEYPAD_CR)) {
                    updatePreview();
                }               
            }

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