Recent content by awd_scot

Hi I have a simple form which has a button on it which contains the following code: Private Declare Function Initialise_MF Lib "MF.dll" (ByVal CallbackFn As Long, ByVal dwUserData As Long) As Long Private Sub Command0_Click() Call Initialise_MF(CallbackFn, dwUserData) End Sub I think this...

Many thanks for your info. I have actuall found out how to do it at table level. ([Field1] Is Null) XOR ([Field2] Is Null) Thanks for your reply. AD

Hi, hopefully there is just a quick and easy anser to this. If a have a table with multiple fields but i have two particlaur fields where i want to have a rule that will only allow me to put a value in one field or the other. I thought i would be able to do this through the table properties...