DtvLong dal_but_del_sel (idb, pos)

Deletes the button at the specified position in the button area passed.

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

The row position of all subsequent buttons in the button area is decremented by one.

The function automatically invoke any set Button listener function.