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| 17. 10. 1. 选择事件 |
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Selection events are generated when buttons get selected and pressed.
There are two methods defined in the SelectionListener interface: |
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public void widgetSelection(SelectionEvent e)
public void widgetDefaultSelection(SelectionEvent e)
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- The first method is called when a button is selected.
- Because default selection is not applicable to buttons.
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import org.eclipse.swt.SWT;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.events.SelectionListener;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
public class EventSelection {
public static void main(String[] args) {
final Display display = new Display();
final Shell shell = new Shell(display, SWT.SHELL_TRIM);
shell.setLayout(new FillLayout());
Button button = new Button(shell, SWT.RIGHT);
button.setText("text on the button");
button.addSelectionListener(new SelectionListener() {
public void widgetSelected(SelectionEvent arg0) {
System.out.println("selected");
}
public void widgetDefaultSelected(SelectionEvent arg0) {
}
});
shell.open();
// Set up the event loop.
while (!shell.isDisposed()) {
if (!display.readAndDispatch()) {
// If no more entries in event queue
display.sleep();
}
}
display.dispose();
}
}
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| 17. 10. 按钮事件 | | 17. 10. 1. | 选择事件 | | | | 17. 10. 2. | 添加一个按钮监听 | |  |
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