dotnet/winforms

[Dark Mode] CheckBox/RadioButton text with FlatStyle 'System' is hard to visible after enabled SystemColorMode.Dark

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#11,950 建立於 2024年8月21日

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area-DarkModehelp wanted

描述

.NET version

9.0.0-rc.1.24418.2 + private dlls built from winforms repo main branch

Did it work in .NET Framework?

No

Did it work in any of the earlier releases of .NET Core or .NET 5+?

This is a new feature Dark Mode: https://github.com/dotnet/winforms/pull/11857

Issue description

CheckBox/RadioButton text with FlatStyle 'System' is hard to visible after enabled SystemColorMode.Dark

Steps to reproduce

  1. Create a WinForms .NET application with RadioButton/CheckBox control, set RadioButton/CheckBox's FlatStyle == System
  2. Enable DarkMode by Application.SetColorMode(SystemColorMode.Dark) in Program.cs file
  3. Run the application to observe

貢獻者指南

技術棧
csharp
領域
desktopaccessibility
議題類型
bug
難度面向新貢獻者的預計實作難度，1 表示很小改動，5 表示專家級工作。
3
預計時間有經驗貢獻者完成調查、實作、測試並準備 pull request 的粗略時間範圍。
half day
活動狀態議題目前的可參與程度：新鮮、活躍、陳舊、阻塞或等待維護者輸入。
stale
清晰度議題是否清楚說明預期改動、驗收標準和下一步。
clear
前置要求
C# basicsWindows Forms controlsSystemColors class
新手友善度1-100 的估計分數，表示該議題對首次貢獻者的友善程度。
70
研究方向
Investigate the rendering of CheckBox and RadioButton controls when FlatStyle is System and dark mode is enabled. Review PR #11857 which introduced dark mode support. The issue likely involves the system drawn text color not being updated. Look at the OnPaint or related methods in the CheckBox/RadioButton source code. Test with the provided steps to reproduce.