Lv_roller strange behavior when clearing/adding CLICKABLE flag

[Tinus]

Hello, thanks once again to both of you for your answers .
I am sorry for steering this discussion off-topic.

This here:

@kisvegabor

Note that the background object is not required. You can crate the message box directly on lv_layer_top() and make only the message box hidden/visible, and layer top clickable/not clickable.

fixed my issue! The whole screen does not get redrawn in this case and everything except the message box is un-clickable.

For those curious, it was really quite simple. Here’s the code:

lv_obj_add_flag(lv_layer_top(), LV_OBJ_FLAG_CLICKABLE); /* disable background input */
msgBox = lv_msgbox_create(lv_layer_top(), NULL, NULL, NULL, false); /* create message box */

/* Do something with message box.... */

lv_obj_clear_flag(lv_layer_top(), LV_OBJ_FLAG_CLICKABLE); /* enable background input */lv_msgbox_close(msgBox);