UI Automation

C1InputPanel provides Microsoft UI Automation (UIA) support for accessibility and automated UI testing scenarios.

UIA support allows screen readers, accessibility tools, and automation frameworks to inspect and interact with InputPanel controls through standard Microsoft accessibility APIs. Controls expose accessibility metadata, interaction patterns, hierarchy information, and state information that can be consumed programmatically by assistive technologies and automation clients.

The implementation improves accessibility compliance and enables reliable automated UI testing for WinForms applications.

Typical scenarios include

screen reader integration
accessibility validation
keyboard-accessible interaction
programmatic control navigation.

C1WinForms InputPanel - UIA test demonstration

Supported Features

C1InputPanel exposes standard accessibility and automation information that allows automation clients to navigate controls, inspect values and state information, and invoke supported interactions programmatically.

Controls expose metadata including control names, control types, hierarchy relationships, state information, value information, and supported UIA interaction patterns. Automation frameworks can use this information to locate controls, validate state changes, automate workflows, and perform interaction testing.

Supported Controls

The following controls expose UIA providers and accessibility metadata.

Control	Supported Features	UIA Template
C1InputPanel	Container hierarchy exposure	`UiaPane`
InputButton	Invoke support	`UiaButton`
InputCheckBox	Toggle support	`UiaCheckBox`
InputComboBox	Expand/Collapse, Selection	`UiaComboBox`
InputDataNavigator	Toolbar navigation	`UiaToolBar`
InputDatePicker	Expand/Collapse, Value	`UiaComboBox`
InputFlowPanel	Container support	`UiaPane`
InputGridPanel	Container support	`UiaPane`
InputGroupHeader	Group support	`UiaGroup`
InputHtmlLabel	Text and hyperlink support	`UiaText`
InputImage	Image accessibility support	`UiaImage`
InputLabel	Text support	`UiaText`
InputMaskedTextBox	Text and Value support	`UiaEdit`
InputMenu	Invoke, Selection, Scroll, Transform	`UiaMenu`
InputNumericBox	RangeValue support	`UiaSpinner`
InputOption	Selection item support	`UiaListItem`
InputProgressBar	Progress reporting	`UiaProgressBar`
InputRadioButton	Selection support	`UiaRadioButton`
InputSeparator	Structural separation	`UiaSeparator`
InputSplitButton	Invoke, Selection, Scroll, Transform	`UiaSplitButton`
InputTextBox	Text and Value support	`UiaEdit`
InputTimePicker	Value support	`UiaSpinner`
InputTrackBar	Range interaction support	`UiaSlider`

UIA Pattern-to-Control Mapping

C1InputPanel exposes standard UI Automation interaction patterns according to the capabilities of each control.

Pattern Mapping

The following table shows the primary UIA patterns exposed by supported InputPanel controls.

Control	Supported UIA Patterns
`InputButton`	`InvokePattern`
`InputCheckBox`	`TogglePattern`
`InputComboBox`	`ExpandCollapsePattern`, `SelectionPattern`
`InputDatePicker`	`ExpandCollapsePattern`, `ValuePattern`
`InputMenu`	`InvokePattern`, `SelectionPattern`, `ScrollPattern`, `TransformPattern`
`InputNumericBox`	`RangeValuePattern`
`InputOption`	`SelectionPattern`
`InputRadioButton`	`SelectionPattern`
`InputSplitButton`	`InvokePattern`, `SelectionPattern`, `ScrollPattern`, `TransformPattern`
`InputTextBox`	`ValuePattern`
`InputMaskedTextBox`	`ValuePattern`
`InputTimePicker`	`ValuePattern`
`InputTrackBar`	`RangeValuePattern`

Accessibility Behavior

C1InputPanel exposes child controls through the standard UI Automation hierarchy, allowing automation clients to navigate controls programmatically, read values and state information, detect state changes, invoke supported interactions, and query supported interaction patterns.

This behavior supports integration with Windows Narrator, screen readers, accessibility inspection tools, and automated UI testing frameworks.

Limitations

Limitation	Description
Container-level UIA restrictions	Some advanced container behaviors are limited by Microsoft UIA provider constraints.
Extra edit node in `InputDatePicker`	Internal `TextBox` hosting may expose an unnamed edit node in the UIA tree.
TextBox hierarchy inconsistencies	Hosted native `TextBox` controls may expose duplicate accessibility nodes.
Focus support	Full focus-related UIA pattern support is not implemented.