ScrollPattern.VerticallyScrollableProperty 字段

定义

命名空间:

System.Windows.Automation

程序集:

UIAutomationClient.dll

标识 VerticallyScrollable 属性。

public: static initonly System::Windows::Automation::AutomationProperty ^ VerticallyScrollableProperty;

public static readonly System.Windows.Automation.AutomationProperty VerticallyScrollableProperty;

 staticval mutable VerticallyScrollableProperty : System.Windows.Automation.AutomationProperty

Public Shared ReadOnly VerticallyScrollableProperty As AutomationProperty 

字段值

AutomationProperty

示例

在以下示例中，根元素传递给一个函数，该函数返回 的 集合，该集合 AutomationElement是根的子代并满足一组属性条件。

///--------------------------------------------------------------------
/// <summary>
/// Finds all automation elements that satisfy 
/// the specified condition(s).
/// </summary>
/// <param name="targetApp">
/// The automation element from which to start searching.
/// </param>
/// <returns>
/// A collection of automation elements satisfying 
/// the specified condition(s).
/// </returns>
///--------------------------------------------------------------------
private AutomationElementCollection FindAutomationElement(
    AutomationElement targetApp)
{
    if (targetApp == null)
    {
        throw new ArgumentException("Root element cannot be null.");
    }

    PropertyCondition conditionSupportsScroll =
        new PropertyCondition(
        AutomationElement.IsScrollPatternAvailableProperty, true);
    
    PropertyCondition conditionHorizontallyScrollable =
        new PropertyCondition(
        ScrollPattern.HorizontallyScrollableProperty, true);

    PropertyCondition conditionVerticallyScrollable =
        new PropertyCondition(
        ScrollPattern.VerticallyScrollableProperty, true);

    // Use any combination of the preceding conditions to 
    // find the control(s) of interest
    Condition condition = new AndCondition(
        conditionSupportsScroll,
        conditionHorizontallyScrollable, 
        conditionVerticallyScrollable);

    return targetApp.FindAll(TreeScope.Descendants, condition); 
}

'''--------------------------------------------------------------------
''' <summary>
''' Finds all automation elements that satisfy 
''' the specified condition(s).
''' </summary>
''' <param name="targetApp">
''' The automation element from which to start searching.
''' </param>
''' <returns>
''' A collection of automation elements satisfying 
''' the specified condition(s).
''' </returns>
'''--------------------------------------------------------------------
Private Function FindAutomationElement( _
ByVal targetApp As AutomationElement) As AutomationElementCollection
    If targetApp Is Nothing Then
        Throw New ArgumentException("Root element cannot be null.")
    End If

    Dim conditionSupportsScroll As New PropertyCondition( _
    AutomationElement.IsScrollPatternAvailableProperty, True)

    Dim conditionHorizontallyScrollable As New PropertyCondition( _
    ScrollPattern.HorizontallyScrollableProperty, True)

    Dim conditionVerticallyScrollable As New PropertyCondition( _
    ScrollPattern.VerticallyScrollableProperty, True)

    ' Use any combination of the preceding conditions to 
    ' find the control(s) of interest
    Dim condition As AndCondition = New AndCondition( _
    conditionSupportsScroll, _
    conditionHorizontallyScrollable, _
    conditionVerticallyScrollable)

    Return targetApp.FindAll(TreeScope.Descendants, condition)

End Function 'FindAutomationElement

注解

此标识符由UI 自动化客户端应用程序使用。 UI 自动化提供程序应使用 中的ScrollPatternIdentifiers等效字段。

另请参阅

• HorizontallyScrollableProperty