You’re funny, you want to tell me about HiDPI Windows API.
So if you’re interested read this: High-DPI Scaling Improvements for Desktop Applications in the Windows 10 Creators Update (1703) - Windows Developer Blog
and this High DPI Scaling Improvements for Desktop Applications and “Mixed Mode” DPI Scaling in the Windows 10 Anniversary Update (1607) - Windows Developer Blog
and there is still more stuff that are only visible in the msdn docs about stuff not available in Windows 7.
Have a nice Weekend,
Arne