dotnet
Recreate handle resizes the form on monitor with non-96 DPI
- .NET Core Version: all
- Have you experienced this same bug with .NET Framework?: haven't checked
Problem description:
On a monitor with non-default DPI (e.g. 150%, 200%, etc.) a form changes its dimensions upon recreation of its handle:
https://user-images.githubusercontent.com/4403806/140443304-0be2fda6-f37e-40b1-b1f8-d4467ba18339.mp4
On a monitor with 100% scale factor everything works as expected.
Expected behavior: The form retains the geometry.
Minimal repro:
- Unzip repro.zip in to .\src\System.Windows.Forms\tests\IntegrationTests\WinformsControlsTest
- Update Program.cs to invoke
Form1 - F5
@RussKie, I tried this on my machine with standalone app but could not repro. Only difference is, I have latest bits here.
Tested against the latest main. It is still happening for me on a secondary monitor with 150% SF (the primary monitor is at 100%)
https://user-images.githubusercontent.com/4403806/142094113-ff1f3f9f-ff04-444a-b03a-52681a32da66.mp4
@RussKie , I was going over this issue as part of the push we are making. I tried this particular scenario on a 150/200 DPIs but i see no issue. I do see Form being hidden completely when showTaskbar is set to false though. Can you try one last time and update me ?
@dreddy-work, verified this on .NET 8.0 latest build: 8.0.100-alpha.1.22565.7, issue only repro on a high 150/200 DPIs secondary monitor, it doesn't repro on a high DPIs Primary monitor.
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