Function imgui_sys::ImDrawList_AddRect

pub unsafe extern "C" fn ImDrawList_AddRect(
    self_: *mut ImDrawList, 
    a: ImVec2, 
    b: ImVec2, 
    col: ImU32, 
    rounding: f32, 
    rounding_corners_flags: c_int, 
    thickness: f32
)