ITransformProvider2 interface

Extends the ITransformProvider interface to enable Microsoft UI Automation providers to expose properties to support the viewport zooming functionality of a control.

When to implement

Controls that include a viewport zooming feature should implement ITransformProvider2 to enable UI Automation clients to programmatically access the feature.

Members

The ITransformProvider2 interface inherits from the IUnknown interface. ITransformProvider2 also has these types of members:

Methods
Properties

Methods

The ITransformProvider2 interface has these methods.

Method	Description
Zoom	Zooms the viewport of the control.
ZoomByUnit	Zooms the viewport of the control by the specified logical unit.

Properties

The ITransformProvider2 interface has these properties.

Property	Access type	Description
CanZoom	Read-only	Indicates whether the control supports zooming of its viewport.
ZoomLevel	Read-only	Retrieves the current zoom level of the element.
ZoomMaximum	Read-only	Retrieves the maximum zoom level of the element.
ZoomMinimum	Read-only	Retrieves the minimum zoom level of the element.

Requirements

Minimum supported client	Windows 8 [desktop apps \| Windows Store apps]
Minimum supported server	Windows Server 2012 [desktop apps \| Windows Store apps]
Header	UIAutomationCore.h (include UIAutomation.h)
IDL	UIAutomationCore.idl
DLL	UIAutomationCore.dll
IID	IID_ITransformProvider2 is defined as dd7b598c-4f1a-479c-94f5-7b91eb21d052