It looks transparent in Quark, what you've imported are .png .gif pictures with alpha channel. But when you export them as PDF, you will no longer see the transparent part of your picture, but only the white...
OK, now the solution:
After you imported the pictures with alpha channel into the picture box, don't forget to
引用:
right click
-> modify...
-> TAG runaroundand clipping
-> set type alpha channel
uncheck all the options like
"restrict to box" etc.
After the project is exported to PDF, now you'll see your picture transparent again.