diff options
| author | Sven Eisenhauer <sven@sven-eisenhauer.net> | 2023-11-10 15:11:48 +0100 |
|---|---|---|
| committer | Sven Eisenhauer <sven@sven-eisenhauer.net> | 2023-11-10 15:11:48 +0100 |
| commit | 33613a85afc4b1481367fbe92a17ee59c240250b (patch) | |
| tree | 670b842326116b376b505ec2263878912fca97e2 /Master/Reference Architectures and Patterns/hjp5/examples/Listing2905.java | |
| download | Studium-master.tar.gz Studium-master.tar.bz2 | |
Diffstat (limited to 'Master/Reference Architectures and Patterns/hjp5/examples/Listing2905.java')
| -rw-r--r-- | Master/Reference Architectures and Patterns/hjp5/examples/Listing2905.java | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/Master/Reference Architectures and Patterns/hjp5/examples/Listing2905.java b/Master/Reference Architectures and Patterns/hjp5/examples/Listing2905.java new file mode 100644 index 0000000..1a8d40c --- /dev/null +++ b/Master/Reference Architectures and Patterns/hjp5/examples/Listing2905.java @@ -0,0 +1,52 @@ +/* Listing2905.java */
+
+import java.awt.*;
+import java.awt.event.*;
+
+public class Listing2905
+extends Frame
+implements FocusListener
+{
+ boolean havefocus = false;
+
+ public static void main(String[] args)
+ {
+ Listing2905 wnd = new Listing2905();
+ }
+
+ public Listing2905()
+ {
+ super("Focus-Listener");
+ addFocusListener(this);
+ addWindowListener(new WindowClosingAdapter(true));
+ setBackground(Color.lightGray);
+ setSize(300,200);
+ setLocation(200,100);
+ setVisible(true);
+ }
+
+ public void paint(Graphics g)
+ {
+ if (havefocus) {
+ g.setColor(Color.black);
+ g.drawString("Fokus erhalten",10,50);
+ } else {
+ g.setColor(Color.darkGray);
+ g.drawString("Kein Fokus",10,50);
+ }
+ }
+
+ public void focusGained(FocusEvent event)
+ {
+ havefocus = true;
+ setBackground(Color.yellow);
+ repaint();
+ }
+
+ public void focusLost(FocusEvent event)
+ {
+ havefocus = false;
+ setBackground(Color.lightGray);
+ repaint();
+ }
+}
\ No newline at end of file |