put_pixmap_attributes(+Pixmap, +Attributes)
     put_pixmap_attributes(+Pixmap, +Attributes, +Graphics_attribs)

Pixmap is modified so that Attributes are a subset of its attributes. The only pixmap attribute that may be changed is its gc. If Graphics_attribs is specified, it is a list of graphics attributes to be given to the pixmap. put_pixmap_attributes(P,A,G) is equivalent to put_pixmap_attributes(P,A), put_graphics_attributes(P,G), but is slightly more efficient. But mainly it's more convenient.