Function libnotcurses_sys::c_api::nccells_double_box

pub fn nccells_double_box(
    plane: &mut NcPlane, 
    style: impl Into<NcStyle_u16>, 
    channels: impl Into<NcChannels_u64>, 
    ul: &mut NcCell, 
    ur: &mut NcCell, 
    ll: &mut NcCell, 
    lr: &mut NcCell, 
    hl: &mut NcCell, 
    vl: &mut NcCell
) -> NcResult_i32

nccells_load_box with double line box-drawing characters.

Method: NcCell.double_box().