Function button_panel_add_label 

pub unsafe extern "C" fn button_panel_add_label(
    button_panel: *mut ButtonPanel,
    x: u16,
    y: u16,
    font: Font,
    label_str: *const c_char,
)

Add label to button_panel module.

Arguments

• button_panel - ButtonPanel instance
• x - x-coordinate to place label
• y - y-coordinate to place label
• font - font to write label with
• label_str - string label to write