Method Cairo.Context()->set_operator()
- Method
set_operator
 voidset_operator(intop)- Description
 Sets the compositing operator to be used for all drawing operations.
The default operator is OPERATOR_OVER.
- Parameter 
op a compositing operator
void set_operator(int op)
Sets the compositing operator to be used for all drawing operations.
The default operator is OPERATOR_OVER.
opa compositing operator