osx - Converting to const in C++ -

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c++, os x, carbon api.

i need pass in const fsspec method fspopendf

i have follows:

const fsspec fsspec = ffilespec.getfsspec();/* declared fsspec getfsspec() const; */  err = ::fspopendf(fsspec, 1, &refnumber);

but error is:

error: cannot convert 'const fsspec' 'const fsspec*' argument '1' 'oserr fspopendf(const fsspec*, sint8, short int*)'

i have tried defining as: 

const fsspec*  fsspec = ffilespec.getfsspec();

and doesn't help. confused.

can explain concept missing?

try this:

fsspec fsspec = ffilespec.getfsspec(); err = ::fspopendf(&fsspec, 1, &refnumber);

you seem understand need take address of object when calling function wanting pointer, refnumber; same merely needs done fsspec object since const fsspec* expected.


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