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IVisualTreeServiceCallback3::OnXamlRootChange method (xamlom.winui.h)

  • Article

Communicates when a XamlRoot root is added or removed.

Syntax

HRESULT OnXamlRootChange(
  InstanceHandle     root,
  VisualMutationType mutationType
);

Parameters

root

The XamlRoot.

mutationType

Specifies whether the root is being added or removed.

Return value

If this method succeeds, it returns S_OK. Otherwise, it returns an HRESULT error code.

Remarks

This callback method is invoked when a XamlRoot root is added or removed. The mutationType parameter specifies whether the root is being added or removed.

Requirements

Requirement Value
Minimum supported client Windows 10, version 1809 (with Windows App SDK 1.0 or later)
Header xamlom.winui.h