Windows API or Windows Form

Which would be better for my project:

Windows API with C++

or

Windows Form


My project:

Create a window like this:

2 text boxes.
2 buttons

One text box will show a Chemical or something and we have to type out what it is in the second text box.
One button would be submit and it would check if what I wrote is write
Another button would be for getting another equation.

Any ideas?

WinForms. You don't need the WinAPI at all.