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import javax.microedition.lcdui.Canvas;
import javax.microedition.lcdui.Command;
import javax.microedition.lcdui.CommandListener;
import javax.microedition.lcdui.Display;
import javax.microedition.lcdui.Displayable;
import javax.microedition.lcdui.Form;
import javax.microedition.lcdui.Graphics;
import javax.microedition.lcdui.StringItem;
import javax.microedition.midlet.MIDlet;
public class AttributesMIDlet extends MIDlet implements CommandListener {
private Display display;
protected boolean started;
private Command exitCommand;
protected void startApp() {
if (!started) {
display = Display.getDisplay(this);
Canvas canvas = new DummyCanvas();
Form form = new Form("Attributes");
exitCommand = new Command("Exit", Command.EXIT, 0);
form.addCommand(exitCommand);
boolean isColor = display.isColor();
form.append(new StringItem(isColor ? "Colors: " : "Grays: ", String.valueOf(display
.numColors())));
form.append(new StringItem("Width: ", String.valueOf(canvas.getWidth())));
form.append(new StringItem("Height: ", String.valueOf(canvas.getHeight())));
form.append(new StringItem("Pointer? ", String.valueOf(canvas.hasPointerEvents())));
form.append(new StringItem("Motion? ", String.valueOf(canvas.hasPointerMotionEvents())));
form.append(new StringItem("Repeat? ", String.valueOf(canvas.hasRepeatEvents())));
form.append(new StringItem("Buffered? ", String.valueOf(canvas.isDoubleBuffered())));
form.setCommandListener(this);
display.setCurrent(form);
started = true;
}
}
protected void pauseApp() {
}
protected void destroyApp(boolean unconditional) {
}
public void commandAction(Command c, Displayable d) {
if (c == exitCommand) {
notifyDestroyed();
}
}
}
class DummyCanvas extends Canvas {
protected void paint(Graphics g) {
}
}
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