Paint in cubic projection, how?

sorry for my English
help me understand something

  1. I have object. Object has UV coordinates.
    Where are you cubic projection? why is this happening? why not a cubic projection? I need to draw a cubic projection of, how to pain in cubic projection?
  2. Does Fill Brush can fill object with texture? I choose Fill brush, assign texture in the slot, but the brush fills with color, no texture, why?

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