I'm trying to create a routine to automatically insert our raster images and export it to a different format. Before exporting it, I need to turn on the transparency and change the image background to black. I can set the transparency using the dxf group code without any problem but to change the background, I can't find any dxf code for it. Can someone provide me with the right group code or is there any other way to change the background automatically? Any help will be much appreciated.
