You can know the DPI of your laptop screen or monitor in the Display settings. The Surface Pro display is among the high DPI displays. When you use such devices, like Surface Book, Surface Pro 3 ...

Searching for "Windows forms high DPI display issue in visual studio" reveals a number of articles. Including this link from Microsoft Disable DPI-awareness to fix HDPI / scaling issues with Windows ...

MPos is a minimalistic and easy to use tool to track the current position of the cursor on the screen. MPos especially considers High-DPI monitors and DPI scaling of Windows 10. The tracked cursor ...