DtvLong dal_but_cre_sel (idb, pos)

Creates a new button in the passed button area at the specified position.

Input Parameters Significance
DtvLong idb button area Id
DtvLong pos (logical) position of the button

Output Parameters Significance
none -

Return Code Significance
0 all ok
1 wrong (logical) position
-1 zero Id

If a button has already been defined for the (logical) position, it will be deleted.

The function automatically invoke any set Button listener function.