Function button_panel_add_icon 

pub unsafe extern "C" fn button_panel_add_icon(
    button_panel: *mut ButtonPanel,
    x: u16,
    y: u16,
    icon_name: *const Icon,
)

Add a non-button icon to button_panel module.

Arguments

• button_panel - ButtonPanel instance
• x - x-coordinate to place icon
• y - y-coordinate to place icon
• icon_name - name of the icon to draw