DtvLong dal_mas_set_wrk_mod (mod)

Sets the work mode of mask edit state for the active mask.

Input Parameters Significance
char mod work mode:
I = insert mode
U = update mode
Q = query mode
V = view mode

Output Parameters Significance
no -

Return Code Significance
0 no error
1 wrong work mode

Only use this function if a mask is active and the event Loop is in mask edit state.