zlander,

I can tell you the way I've dealt with this, but it's not a solution that everyone will be happy with. There are basically three ways we can change the size of things on our monitor. (I suppose a fourth is to write our program to make things bigger, but I'll leave that one out for now.)

  1. Change our monitor's hardware resolution, but this one isn't the best for clarity and sharpness.
  2. Change our DPI settings, but this one causes problems like you're having, as well as other GDI API problems and other graphics manipulation problems.
  3. Change the "Scale and Layout" setting, but this requires Windows 10.

Because of the problems associated with #2, I've told my clients to not use that option. When they needed larger things on the screen, before Windows 10, I told them to use the monitor's resolution settings. But now, with Windows 10, the "Scale and Layout" settings are very nice, and they don't tamper with the DPI setting (leaving it at 96), and it scales TrueType fonts, and it works hard at keeping pictures sharp. Microsoft has done a pretty good job of this, and they're continuing to work on it.

Anyway, that's my solution.

Good Luck,
Elroy