When Button is pressed, it stretch


I try the List demo in github/lv_example_list_1.c and modify some code to change the button style. But after I press the button, it seems that button become wider than before. It isn’t what I want. It should have same size whether pressed or not.

What MCU/Processor/Board and compiler are you using?

STM32F407ZG, RT-Thread RTOS

What do you want to achieve?

I want to design a new style for button on the list. But it stretch when I pressed button.

Code to reproduce

Here is the style code I add in function void lv_example_list_1(void).

    static lv_style_t style_btn;
    lv_style_set_bg_color(&style_btn, lv_color_hex(0x115588));
    lv_style_set_bg_opa(&style_btn, LV_OPA_50);
    lv_style_set_border_width(&style_btn, 1);
    lv_style_set_border_color(&style_btn, lv_color_black());

    lv_obj_add_event_cb(btn, event_handler, LV_EVENT_CLICKED, NULL);
    btn = lv_list_add_btn(list1, LV_SYMBOL_DIRECTORY, "Open");
    lv_obj_add_style(btn, &style_btn, LV_STATE_DEFAULT | LV_PART_MAIN);
    lv_obj_add_style(btn, &style_btn, LV_STATE_PRESSED);

Screenshot and/or video

You can see that the blue background becomes wider after I press the button. I want to solve this problem. Thanks.

Hi @xsmingerfan ,

This is a global option which can be changed in the lv_conf.h file.

If you look for the “Theme” section and then change

    /*1: Enable grow on press*/


    /*1: Enable grow on press*/

Rebuild the lvgl library and your application it should disable this feature.

I hope that helps…

Kind Regards,


1 Like

I have solve this problem, thanks for you support

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