int bw = m_width = bmp.GetWidth();
int bh = m_height = bmp.GetHeight();
wxBitmap bmpSource = bmp; // we need a non-const instance
int bw = m_width = bmp.GetWidth();
int bh = m_height = bmp.GetHeight();
wxBitmap bmpSource = bmp; // we need a non-const instance