x = WXROUND(m_xpos - m_bitmap.GetWidth() / 2.0);
y = WXROUND(m_ypos - m_bitmap.GetHeight() / 2.0);
dc.DrawBitmap(m_bitmap, x, y, true);
x = WXROUND(m_xpos - m_bitmap.GetWidth() / 2.0);
y = WXROUND(m_ypos - m_bitmap.GetHeight() / 2.0);
dc.DrawBitmap(m_bitmap, x, y, true);