Function imgui_sys::ImFontAtlas_AddCustomRectFontGlyph

pub unsafe extern "C" fn ImFontAtlas_AddCustomRectFontGlyph(
    self_: *mut ImFontAtlas,
    font: *mut ImFont,
    id: ImWchar,
    width: c_int,
    height: c_int,
    advance_x: f32,
    offset: ImVec2
) -> c_int