Confusing issue regarding tagRECT

[johnsone006]

So, I am currently programming an application that automatically opens, screenshots, and closes .nif files by opening the files in a program called NifSkope that you can find on here (specifically, Nifskope dev 2 version 7). TLDR: I need to allow the user to automatically adjust the camera in Nifskope because the .nifs don't always load in an ideal position. That means I need access to the buttons.
So I have written code to retrieve each button in an element array, but for some confusing reason, when I attempt to get the bounding rectangle property of a button, instead of returning a tagRECT, it returns an array of doubles. The documentation says that tagRECTS has four integer values, so it's confusing as to why it would return a double array. But it's a bad thing-integers are not floating point numbers, but are used as parameters for both points, rectangles and sizes in c#, for one. Doubles aren't. For another, it's causing a runtime exception. I'd appreciate some explanation as to what is occurring. I'm writing this in c# using windows forms.