Hi Christophe

I just uploaded the solution to your question into the Vault: http://www.boostpro.com/vault/index.php?direction=0&order=&directory=Msm&

Ok, thanks. I quote from the code: [comments and white space omitted to avoid line breaks]

struct transition_table : mpl::vector< _row < A, z, B >, _row < B, t, D >

...

{};

What do t & D stand for (they do not appear in Figure 2)? They don't seem to be necessary to implement the chart? [comments and white space omitted to avoid line breaks]

struct transition_table : mpl::vector< row< C, x, C, &SM::implement_x_action, &SM::is_C_in_exit_mode >, a_row< C, y, C, &SM::implement_y_action >

...

{};

1) Is it possible to implement the transitions exactly as shown in the chart? 2) If no, is this why you introduced two self-transitions to C, one with a guard to prevent transition from B? Thanks & Regards, -- Andreas Huber When replying by private email, please remove the words spam and trap from the address shown in the header.