Is it possible to create class or type with bit field

[F.Mayis]

Hi,
All is in the subject.

In C/C++ i have a structure:

typedef struct titi{
unsigned char field1:1;
unsigned char field2:1;
unsigned char field3:2;
unsigned char field4:1;
}titi;

now i have a program in VB that must fill this structure and put it in a binary file.
But i don't know if bit field is possible in VB

thanks!