
Originally Posted by
AccessPower
What you are looking for is Conditional Formatting with a textbox that works like a button.
1) Create a textbox that looks like a disabled button
2) Set the textbox to disabled
3) Click on conditional formatting > Choose Expression from the dropdown list
4) In the expression field type [Path]<>""
5) Click on the enabled button as a condition. It's a little button on the right and easy to miss. Also, make the button look like it's enabled through formatting of the background color and forecolor here.