lv_buttonmatrix_get_selected_button() is only used within i80_controller sample.
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lv_buttonmatrix_get_selected_button() function
Get the index of the lastly "activated" button by the user (pressed, released, focused etc) Useful in the `event_cb` to get the text of the button, check if hidden etc.
Syntax
Implemented in ![]()
lv_buttonmatrix.c:306
Return value
index of the last released button (LV_BUTTONMATRIX_BUTTON_NONE: if unset)