The Run dialog has been recreated using InForm, that's all QB64. The Open dialog in the second screenshot is Windows native, via API call.
The purpose, as stated in the first post, is a proof of concept. Look how cool my form looks using InForm. That's the only goal with this.
But as soon as the dialog with the original goal was posted, I found out via phred that Windows 10 has extinguished the Run dialog, so my faux dialog was repurposed. Now you can have a basic OS functionality back with a program created using BASIC.