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TreeTraversalOptions enumeration (uiautomationcoreapi.h)

  • Article

Defines values that can be used to customize tree navigation order.

Syntax

typedef enum TreeTraversalOptions {
  TreeTraversalOptions_Default = 0x0,
  TreeTraversalOptions_PostOrder = 0x1,
  TreeTraversalOptions_LastToFirstOrder = 0x2
} ;

Constants

 
TreeTraversalOptions_Default
Value: 0x0
Pre-order,
visit children from first to last.
TreeTraversalOptions_PostOrder
Value: 0x1
Post-order, see Remarks for more info.
TreeTraversalOptions_LastToFirstOrder
Value: 0x2
Visit children from last to first.

Remarks

Option groups (flags):

  • Traversal order (pre-order, post-order) defines when nodes should be tested against search conditions. For example, "on enter" or "on leave".
  • Visit order defines in which order relatives are visited. Relatives include children and siblings. Visit orders are relative to parents. From the child perspective First-to-Last means "visit the next sibling from the child" while Last-to-First means "visit the previous sibling from the child".

Requirements

Requirement Value
Minimum supported client Windows 10, version 1703 [desktop apps only]
Minimum supported server None supported
Header uiautomationcoreapi.h (include UIAutomation.h, Uiautomationcoreapi.h)

See also

Text Attribute Identifiers