AWTGLCanvas: Added exceptionOccurred to allow users to be notified of unhandled LWJGLExceptions in paint()

src/java/org/lwjgl/opengl/AWTGLCanvas.java

@@ -324,11 +324,21 @@ public class AWTGLCanvas extends Canvas implements Drawable, ComponentListener,
 					peer_info.unlock();
 				}
 			} catch (LWJGLException e) {
-				LWJGLUtil.log("Failed to lock surface, skipping paint(): " + e);
+				exceptionOccurred(e);
 			}
 		}
 	}
 
+	/**
+	 * This method will be called if an unhandled LWJGLException occurs in paint().
+	 * Override this method to be notified of this.
+	 *
+	 * @param exception The exception that occurred.
+	 */
+	protected void exceptionOccurred(LWJGLException exception) {
+		LWJGLUtil.log("Unhandled exception occurred, skipping paint(): " + exception);
+	}
+
 	/**
 	 * override update to avoid clearing
 	 */