Function ncplane_vline 

pub fn ncplane_vline(
    plane: &mut NcPlane,
    cell: &NcCell,
    len: u32,
) -> NcResult_i32

Draws vertical lines using the specified cell, starting at the current cursor position.

The cursor will end at the cell following the last cell output, just as if ncplane_putc was called at that spot.

Returns the number of cells drawn on success. On error, returns the negative number of cells drawn.

Method: NcPlane.vline().