System.Drawing.Graphics.DpiX always return 96

Question

I have vb.net winform app that has AutoScaleMode = dpi AutoScale = false AutoSize = true

I\'ve signed off after changing DPI setting. I also tried restarting the machine

Answer 1

I found solution. My app's manifest has to say it is dpiAware. Because I am trying to detect high DPI and show a warning message box and not really trying to make my app dpi aware, I couldn't do that. You can get dpi aware information from registry: HKEY_CURRENT_USER\Control Panel\Desktop LogPixels.

If you are using default, you won't have the key. Changing DPI setting will create one.