You can make pop-up windows quickly and easily by using tab controls.

By using tab controls, you can create the same visual effect and the same functionality as a pop-up window, but you don’t need to create a sub-VI. Since you never leave the VI, you don’t need to worry about passing information into and out of the dialog, simplifiying the code.

While this technique may not be appropriate for every situation, it is a nice trick to have when you need a quick pop-up window.

Give it a try. An example VI is attached.

Download VI: QuickPopUp.vi