Fix: UIA tree not visible for Avalonia content embedded via WinFormsAvaloniaControlHost by AndreyPolovodov · Pull Request #21422 · AvaloniaUI/Avalonia (original) (raw)
added 2 commits
…onPeer
Without IRootProvider, AutomationNode.Create falls back to the plain AutomationNode which doesn't implement IRawElementProviderFragmentRoot and returns null from GetHostRawElementProvider. As a result, UiaReturnRawElementProvider responds with E_FAIL for the WM_GETOBJECT sent to the embedded HWND, and the Avalonia automation tree is invisible to UIA clients (Inspect.exe, Narrator, FlaUI etc.) when the control is hosted via WinFormsAvaloniaControlHost.
MrJul pushed a commit to MrJul/Avalonia that referenced this pull request
…valoniaControlHost (AvaloniaUI#21422)
[Automation] Add EmbeddableControlRootAutomationPeer tests
[Automation] Implement IRootProvider on EmbeddableControlRootAutomationPeer
Without IRootProvider, AutomationNode.Create falls back to the plain AutomationNode which doesn't implement IRawElementProviderFragmentRoot and returns null from GetHostRawElementProvider. As a result, UiaReturnRawElementProvider responds with E_FAIL for the WM_GETOBJECT sent to the embedded HWND, and the Avalonia automation tree is invisible to UIA clients (Inspect.exe, Narrator, FlaUI etc.) when the control is hosted via WinFormsAvaloniaControlHost.
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