Creo10 & ProToolkit & Cpp... Button#1 (in UI_dialog#1) would have a callback, which would... step1) load DLL#2, and then step2) Call an exported Function (eg. "display_dialog_2") which would result in UI_dialog#2 being displayed alongside-of, or in-front-of UI_dialog#1. *But, I cant seem to get step 2 to work. UI#2 never displays. Any help&guidance would def be appreciated. Code example(s) even better.