求助各位大咖，OpenMV4 cam可以支持鼠标事件吗？鼠标框出搜索目标，目前代码一运行就会停止在初始画面处

import sensor, image, time
from pyb import LED, Pin

初始化摄像头

sensor.reset()
sensor.set_pixformat(sensor.RGB565)
sensor.set_framesize(sensor.QVGA)
sensor.skip_frames(time=2000)
sensor.set_auto_gain(False)
sensor.set_auto_whitebal(False)

初始化 IO 引脚用于与 PLC 通信

forward_pin = Pin('P0', Pin.OUT_PP)
backward_pin = Pin('P1', Pin.OUT_PP)
left_pin = Pin('P2', Pin.OUT_PP)
right_pin = Pin('P3', Pin.OUT_PP)
stop_pin = Pin('P4', Pin.OUT_PP)

初始化 OpenMV 自带的三色灯

red_led = LED(1)
green_led = LED(2)
blue_led = LED(3)

初次上电，三色灯 LED 循环闪亮 1s，两次结束

for _ in range(2):
red_led.on()
green_led.off()
blue_led.off()
time.sleep(1000)
red_led.off()
green_led.on()
blue_led.off()
time.sleep(1000)
red_led.off()
green_led.off()
blue_led.on()
time.sleep(1000)
red_led.off()
green_led.off()
blue_led.off()

初始化 Camshift 追踪器

roi = None
hist = None
tracking = False

鼠标事件变量

mouse_down = False
start_x = 0
start_y = 0

鼠标事件回调函数

def mouse_callback(e):
global mouse_down, start_x, start_y, roi, tracking
if e[0] == 1: # 鼠标按下事件
mouse_down = True
start_x = e[1]
start_y = e[2]
elif e[0] == 3: # 鼠标释放事件
mouse_down = False
end_x = e[1]
end_y = e[2]
if abs(end_x - start_x) > 10 and abs(end_y - start_y) > 10: # 确保框选区域有效
roi = (min(start_x, end_x), min(start_y, end_y), abs(end_x - start_x), abs(end_y - start_y))
hist = image.Image(roi=roi).get_histogram()
tracking = True

绑定鼠标回调函数

sensor.skip_frames(callback=mouse_callback)

定义距离阈值（假设通过图像中目标大小估算距离）

target_distance = 500 # 期望保持的距离（单位：cm）
distance_threshold = 50 # 允许的距离误差

异常标志

is_abnormal = False

clock = time.clock()
last_blink_time = time.ticks_ms()

while True:
clock.tick()
img = sensor.snapshot()

if not tracking:
    # 等待用户鼠标框选目标
    img.draw_string(10, 10, "Use mouse to select an object to track", color=(255, 0, 0))
    if