Method DrawBitmap

src/widgets/ImageRoll.cpp:302–314

}

void ImageRoll::DrawBitmap(wxDC &dc, wxBitmap &bitmap,
                           int x, int y, int logicalFunc)
{
   auto func = static_cast< wxRasterOperationMode >( logicalFunc );
   if (func == wxCOPY)
      dc.DrawBitmap(bitmap, x, y);
   else {
      wxMemoryDC memDC;
      memDC.SelectObject(bitmap);
      dc.Blit(x, y, bitmap.GetWidth(), bitmap.GetHeight(),
              &memDC, 0, 0, func);
   }
}

void ImageRoll::Draw(wxDC &dc, wxRect rect)
{