If I try to place a combo box or a list box in a subform when I try to update from the mother form I do not get the combo o list box behavior.
I had to create another field in the mother form and place a tooltip on it to get help.
This helps but it is not an assurance that there will be no misspellings.
Is ther a way to make combo boxes to behave as such in subforms?

I chose table view since I want to see all my subform records at one time.

Thanks.
I used the first part of the programming and the popup menu works very well.
However, I am doing something wrong in the second part that forbids entering data directly into the subform.
My subform has only one field.
The subform name is Categorias and the field name is Categorias0.
It should be very easy but I can´t do it.
My code goes like this:

Else
{
     //Not showing as a Subform
     If @Mode() = 0 Then
     {
           //Disable Line Items form if in Add Data
           Label(Categorias, "Esta es la Forma Categorias. Usted no puede añadir records directamente aqui")
           Visibility(Categorias0, 0)
                 }
     Else If @Mode() = 1 Then
     {
           If @ResultSetCurrentPosition() = @ResultSetTotal() Then
           {
                 //Prevents users from going past last record
                 NotifyForm(2)
           }
           else
           {
                 NotifyForm(0)
           }

           //All fields are now read-only to prevent changes to Categorias when not a subform.
           ReadOnly(Categorias0, 1)
     }
}


Where is the error?
Etejeira