Lightpen on

j3270/src/main/java/org/pubvm/j3270/ui/StatusBar.java

@@ -20,6 +20,7 @@ public class StatusBar extends JPanel {
     private final JLabel luName;
     private final JLabel lockStatus;
     private final JLabel modelInfo;
+    private final JButton lpButton;
 
     private Telnet3270Client client;
     private TerminalPanel terminalPanel;
@@ -45,7 +46,7 @@ public class StatusBar extends JPanel {
         modelInfo = createLabel("", oiaFont, OIA_DIM);
         cursorPosition = createLabel("001/001", oiaFont, OIA_FG);
 
-        JButton lpButton = new JButton("LightPen: OFF");
+        lpButton = new JButton("LightPen: OFF");
         lpButton.setFont(oiaFont);
         lpButton.setForeground(OIA_FG);
         lpButton.setBackground(OIA_BG);
@@ -177,5 +178,11 @@ public class StatusBar extends JPanel {
         int row = sb.getCursorRow() + 1;
         int col = sb.getCursorCol() + 1;
         cursorPosition.setText(String.format("%03d/%03d", row, col));
+
+        // Light Pen indicator — sync with actual state
+        if (terminalPanel != null) {
+            lpButton.setText("LightPen: " + (terminalPanel.isLightPenMode() ? "ON" : "OFF"));
+            lpButton.setForeground(terminalPanel.isLightPenMode() ? new Color(255, 255, 80) : OIA_FG);
+        }
     }
 }

j3270/src/main/java/org/pubvm/j3270/ui/TerminalPanel.java

@@ -215,7 +215,12 @@ public class TerminalPanel extends JPanel {
                             sb.setCursorAddress(newAddr);
                             clearSelection();
                             if (lightPenMode) {
-                                if (client.getInputProcessor().lightPenSelect(newAddr)) {
+                                System.out.println("LP click: row=" + selectionStartRow + " col=" + selectionStartCol 
+                                    + " addr=" + newAddr + " mouseY=" + e.getY() + " oy=" + getRenderOffsetY() 
+                                    + " cellH=" + cellHeight);
+                                boolean result = client.getInputProcessor().lightPenSelect(newAddr);
+                                System.out.println("LP lightPenSelect result: " + result);
+                                if (result) {
                                     refreshScreen();
                                     return;
                                 }