TextPattern.GetVisibleRanges Metod

public:
 cli::array <System::Windows::Automation::Text::TextPatternRange ^> ^ GetVisibleRanges();

public System.Windows.Automation.Text.TextPatternRange[] GetVisibleRanges();

member this.GetVisibleRanges : unit -> System.Windows.Automation.Text.TextPatternRange[]

Public Function GetVisibleRanges () As TextPatternRange()

Returer

Samlingen med synliga textintervall i containern eller en tom matris. Null returneras aldrig.

Exempel

private TextPatternRange[] CurrentVisibleRanges(AutomationElement target)
{
    // Specify the control type we're looking for, in this case 'Document'
    PropertyCondition cond = new PropertyCondition(AutomationElement.ControlTypeProperty, ControlType.Document);

    // target --> The root AutomationElement.
    AutomationElement textProvider = target.FindFirst(TreeScope.Descendants, cond);

    TextPattern textpatternPattern = textProvider.GetCurrentPattern(TextPattern.Pattern) as TextPattern;

    if (textpatternPattern == null)
    {
        Console.WriteLine("Root element does not contain a descendant that supports TextPattern.");
        return null;
    }
    return textpatternPattern.GetVisibleRanges();
}

Private Function CurrentVisibleRanges(ByVal target As AutomationElement) As TextPatternRange()
    ' Specify the control type we're looking for, in this case 'Document'
    Dim cond As PropertyCondition = New PropertyCondition(AutomationElement.ControlTypeProperty, ControlType.Document)

    ' target --> The root AutomationElement.
    Dim textProvider As AutomationElement = target.FindFirst(TreeScope.Descendants, cond)

    Dim textpatternPattern As TextPattern = CType(textProvider.GetCurrentPattern(TextPattern.Pattern), TextPattern)

    If (textpatternPattern Is Nothing) Then
        Console.WriteLine("Root element does not contain a descendant that supports TextPattern.")
        Return Nothing
    End If

    Return textpatternPattern.GetVisibleRanges()
End Function

Kommentarer

Osammanhängande textintervall kan uppstå när innehåll i en textcontainer döljs av ett överlappande fönster eller annat objekt, eller när en textcontainer med en layout med flera kolumner har en eller flera kolumner delvis ur vyn.

Om ingen text visas returneras ett degenererat (tomt) textintervall. Det här tomma intervallet kan returneras om textcontainern är tom eller när all text rullas ur vyn.

Se även

• TextPatternRange