Enable High-DPI

[robnadin]

Enables High-DPI mode for Windows users running high resolution displays.

Text and labels should no longer look blurry on these devices.

[DanTheMan827]

Last time I tried, there were issues with images not filling the control. Is this still the case?

[robnadin]

It appears so. I would have thought setting SizeMode to Zoom would solve this for all PictureBox objects, or is there additional work needed besides that?

[robnadin]

I think to get the thumbnail to render at a similar size as before we probably need to get the current window's DPI and scale the image based on that, assuming the default DPI is 96:

float dpiX;
using (Graphics graphics = Graphics.FromHwnd(IntPtr.Zero))
{
    dpiX = graphics.DpiX;
}

float scalingFactor = dpiX / 96f;

int newWidth = (int)(targetWidth * scalingFactor);
int newHeight = (int)(targetHeight * scalingFactor);