Disabling a button until certain fields are completed

[dgrimes]

I have a badge form with a print button at the bottom. I would like this print button disabled until certain fields above are completed. I have text fields and I have radio button (frame) fields connected to other tables. I cannot figure out where or how to write the code that will let me accomplish this. I do not need all the fields on the page complete so I will probably have to name each one. Any help you can give would be appreciated.

Thank you.

[ranman256]

At every box that must be filled in , I have it chec in the afterupdate event: EnableGoBtn

txtbox1_afterupdate()
   EnableGoBtn
end sub

sub EnableGoBtn()
     btnGO.enabled = (not isnull(txtBox1))  and  (not isnull(txtBox2)) and (not isnull(txtBox3))
end sub

[dgrimes]

Where am I putting the 2nd sub information? In the form properties? Sorry, I'm still learning a lot of this stuff.

Thank you.