dotnet/winforms

[Dark Mode] Selection highlight doesn't move when quickly checking a node's checkbox in TreeView

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#11 941 ouverte le 20 août 2024

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area-DarkModehelp wanted

Description

.NET version

9.0.0-rc.1.24418.2 + build private dll 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

The selection highlight does not move to the checked node if the checkbox is clicked quickly when nodes are configured as checkboxes in Dark Mode.

Dark Mode

https://github.com/user-attachments/assets/588c3a01-5c25-423d-8de8-f0fe11e6061b

Classic

https://github.com/user-attachments/assets/83bcef4a-e023-4d38-9c93-c1540cc77355

Steps to reproduce

  1. Create a WinForms .NET Core application with TreeView control
  2. Configure a TreeView control with nodes that have checkboxes enabled.
  3. Enable DarkMode by Application.SetColorMode(SystemColorMode.Dark) in Program.cs file
  4. Run the application and open the TreeView.
  5. Click on any node to highlight it.
  6. Quickly click the checkbox of a different node without pausing between actions.

Guide contributeur

Stack technique
csharp
Domaine
desktop
Type d'issue
bug
DifficultéDifficulté estimée pour un nouveau contributeur, de 1 pour un très petit changement à 5 pour un travail expert.
3
Temps estiméFourchette de temps approximative pour investiguer, implémenter, tester et préparer une pull request.
1-3 hours
Statut d'activitéDisponibilité apparente de l'issue : fraîche, active, ancienne, bloquée ou en attente d'un mainteneur.
fresh
ClartéClarté avec laquelle l'issue explique le changement attendu, les critères d'acceptation et la prochaine étape.
clear
Prérequis
C#WinFormsTreeView controlUI debugging
Accessibilité débutantScore de 1 à 100 estimant l'accessibilité de cette issue pour un premier contributeur.
55
Direction de recherche
Investigate the TreeView control's painting logic for selection highlight in dark mode, particularly the changes from PR #11857. Reproduce the issue by following the steps to verify the timing problem. Examine event handling order when a checkbox is clicked quickly after selecting a node. Focus on files like TreeView.cs and related drawing methods to find the discrepancy in dark mode.