TwStructMember stores the description of a structure member. It is used by TwDefineStruct to create a type that represents a C/C++ structure.

struct TwStructMember
{
    const char * Name;      // name of the member
    TwType       Type;      // type of the member
    size_t       Offset;    // offset of the member from the beginning of its parent structure (in bytes).
                            // it can be easily obtained by using offsetof C-function (stddef.h)
    const char * DefString; // a definition string that will be used to modify the behavior of this member.
                            // same syntax as definition string of TwAddVar* functions
};

TwDefineStruct, DefString syntax