Object Oriented C: Interfaces

This is handle-pass style, and is the most straightforward way to add objects to existing C code (it’s “backwards compatible”). However, it makes shimming and partial derivation nearly impossible. Instead, the entire table should be passed back:

    typedef struct intf intf;
    int (*newIntfCB)(intf*, ...)
    typedef stuct intf {
        void *handle;
        newIntfCB newIntf;
    } intf;

(Here’s hoping beachside phone programming has resulted in valid C code.)