[cairo] operator CAIRO_OPERATOR_XOR

Roman Bednarek roman at mikronika.com.pl
Wed May 19 05:34:58 PDT 2004

  Is there any example with CAIRO_OPERATOR_XOR? I cannot make it work:-(
When I add
cairo_set_operator (ct, CAIRO_OPERATOR_XOR);
to draw_shapes() in cairo demo the window is black(with only text), the
same happens in my program.
  Do I have to set another setting to make XOR operator work?

  Thanks for any help.

   Roman Bednarek

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