# Monkey (/examples/others/monkey)



Generate random input events to stress-test the UI and surface hard-to-reproduce bugs.

Pointer monkey input [#pointer-monkey-input]

<LvglExampleBrief>
  Generate random pointer events with 

  `LV_INDEV_TYPE_POINTER`

  .
</LvglExampleBrief>

`lv_monkey_config_init` initializes a config which is then set to
`LV_INDEV_TYPE_POINTER` with a period between 10 ms and 100 ms.
`lv_monkey_create` registers the synthetic input device and
`lv_monkey_set_enable(monkey, true)` starts the stream of random clicks.

<LvglExample name="lv_example_monkey_1" path="others/monkey/lv_example_monkey_1" />

Encoder monkey input [#encoder-monkey-input]

<LvglExampleBrief>
  Feed random encoder steps into a new default group for focus testing.
</LvglExampleBrief>

The config is set to `LV_INDEV_TYPE_ENCODER` with a 50 to 500 ms period and
input range of -5 to 5. A fresh `lv_group_t` is created, bound to the
monkey's indev with `lv_indev_set_group`, and installed as the default
group. `lv_monkey_set_enable` then starts the random encoder events.

<LvglExample name="lv_example_monkey_2" path="others/monkey/lv_example_monkey_2" />

Button monkey input [#button-monkey-input]

<LvglExampleBrief>
  Fire random button presses mapped to three fixed screen coordinates.
</LvglExampleBrief>

The config is set to `LV_INDEV_TYPE_BUTTON` with a 50 to 500 ms period and
an input range covering indices 0 through 2. Three points are placed along
the top of the screen at `hor_res/4`, `hor_res/2`, and `hor_res*3/4`, then
bound to the monkey's indev with `lv_indev_set_button_points`.
`lv_monkey_set_enable` starts the random presses.

<LvglExample name="lv_example_monkey_3" path="others/monkey/lv_example_monkey_3" />