I'm having issues in my application when displaying and moving RadMessageBox from HD screen to 4K screen. The size of the default icon is very small when shown on the 4K monitor also the location of the buttons seems to go awrywhen moving dialog between monitors. I also get a strange sizing issue when showing a custom bitmap for an image, it's not scaling at all when shown on the 4K monitor.
Luckily the scaling / layout issues can be easily reproduced using the latest Demo Application (Demo Application - Telerik UI for WinForms R2 2022 SP1) by following these steps.
On the HD monitor - start demo app, select Explore all controls, select "Message Box"
Change message type to "Info" and set buttons to "Yes, No, Cancel"
Click "Show RadMessageBox" - Message box is displayed as expected
Drag to 4K monitor - size and layout is wrong and icon image is small
Press cancel whilst its shown on 4K monitor
Click "Show RadMessageBox" - Message box is displayed on HD monitor with overlapping buttons and large image icon
Press Close / cancel and try again - this time it shows correctly
Sometimes when playing with the demo I get also see
I'm aware that RadMessageBox is persistant throughout the life of the applicationso you might have to shut down the demo app and restart it.
And another issue, this time starting in my own HDPI aware application on 4K monitor - this time the size of the message text is too large.