ScrollPattern.HorizontalViewSizeProperty 字段

定义

命名空间:

System.Windows.Automation

程序集:

UIAutomationClient.dll

标识 HorizontalViewSize 属性。

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

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

 staticval mutable HorizontalViewSizeProperty : System.Windows.Automation.AutomationProperty

Public Shared ReadOnly HorizontalViewSizeProperty As AutomationProperty 

字段值

AutomationProperty

示例

在下面的示例中，将根元素传递给一个函数，该函数将可查看区域的当前垂直和水平大小作为总内容区域的百分比返回。

///--------------------------------------------------------------------
/// <summary>
/// Obtains the current vertical and horizontal sizes of the viewable  
/// region as percentages of the total content area.
/// </summary>
/// <param name="targetControl">
/// The automation element of interest.
/// </param>
/// <returns>
/// The horizontal and vertical view sizes.
/// </returns>
///--------------------------------------------------------------------
private double[] GetViewSizes(AutomationElement targetControl)
{
    if (targetControl == null)
    {
        throw new ArgumentNullException(
            "AutomationElement argument cannot be null.");
    }

    double[] viewSizes = new double[2];

    viewSizes[0] =
        (double)targetControl.GetCurrentPropertyValue(
        ScrollPattern.HorizontalViewSizeProperty);

    viewSizes[1] =
         (double)targetControl.GetCurrentPropertyValue(
         ScrollPattern.VerticalViewSizeProperty);

    return viewSizes;
}

'''--------------------------------------------------------------------
''' <summary>
''' Obtains the current vertical and horizontal sizes of the viewable  
''' region as percentages of the total content area.
''' </summary>
''' <param name="targetControl">
''' The automation element of interest.
''' </param>
''' <returns>
''' The horizontal and vertical view sizes.
''' </returns>
'''--------------------------------------------------------------------
Private Overloads Function GetViewSizes( _
ByVal targetControl As AutomationElement) As Double()
    If targetControl Is Nothing Then
        Throw New ArgumentNullException( _
        "AutomationElement argument cannot be null.")
    End If

    Dim viewSizes(1) As Double

    viewSizes(0) = System.Convert.ToDouble( _
    targetControl.GetCurrentPropertyValue( _
    ScrollPattern.HorizontalViewSizeProperty))

    viewSizes(1) = System.Convert.ToDouble( _
    targetControl.GetCurrentPropertyValue( _
    ScrollPattern.VerticalViewSizeProperty))

    Return viewSizes

End Function 'GetViewSizes

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等效字段。ScrollPatternIdentifiers

另请参阅

• VerticalViewSizeProperty