Returns string representation suitable for passing to OS' functions for
file handling. In ANSI build, this is same as \helpref{c\_str}{wxstringcstr}.
In Unicode build, returned value can be either wide character string
Returns string representation suitable for passing to OS' functions for
file handling. In ANSI build, this is same as \helpref{c\_str}{wxstringcstr}.
In Unicode build, returned value can be either wide character string