DtvLong dal_mes_xon ()

Enables message output if previously disabled via dal_mes_xof.

Input Parameters Significance
no -

Output Parameters5 Significance
no -

Return Code Significance
0 no error
1 message window already activated

You can call this function in a nested structure, i.e. several calls of the function dal_mes_xof require the same number of calls of the function dal_mes_xon in order to enable message output again.