[Mod] update cursor info pos after new bar updated

examples/candle_chart/run.py

@@ -35,7 +35,7 @@ if __name__ == "__main__":
 
     timer = QtCore.QTimer()
     timer.timeout.connect(update_bar)
-    # timer.start(100)
+    timer.start(100)
 
     widget.show()
     app.exec_()

vnpy/chart/widget.py

@@ -284,6 +284,7 @@ class ChartWidget(pg.PlotWidget):
         """
         self._right_ix = self._manager.get_count()
         self._update_x_range()
+        self._cursor.update_info()
 
 
 class ChartCursor(QtCore.QObject):