Muokkaa

Jaa

TextPattern.FontWeightAttribute Field

  • Reference

Definition

Namespace:
System.Windows.Automation
Assembly:
UIAutomationClient.dll

Identifies the FontWeight attribute of a text range.

public: static initonly System::Windows::Automation::AutomationTextAttribute ^ FontWeightAttribute;
public static readonly System.Windows.Automation.AutomationTextAttribute FontWeightAttribute;
 staticval mutable FontWeightAttribute : System.Windows.Automation.AutomationTextAttribute
Public Shared ReadOnly FontWeightAttribute As AutomationTextAttribute

Field Value

AutomationTextAttribute

Examples

The following example shows how to obtain an attribute value for a range of text in Microsoft Notepad.

Note

Microsoft Notepad is used as the text provider for example purposes only. Microsoft Notepad is not guaranteed to support the attribute value being requested.

private void GetFontWeightAttribute()
{
    // Start application.
    Process p = Process.Start("Notepad.exe", "text.txt");

    // target --> The root AutomationElement.
    AutomationElement target = AutomationElement.FromHandle(p.MainWindowHandle);

    // Specify the control type we're looking for, in this case 'Document'
    PropertyCondition cond = new PropertyCondition(AutomationElement.ControlTypeProperty, ControlType.Document);

    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;
    }

    Object oAttribute = textpatternPattern.DocumentRange.GetAttributeValue(TextPattern.FontWeightAttribute);
    if (oAttribute == TextPattern.MixedAttributeValue)
    {
        Console.WriteLine("Mixed font weights.");
    }
    else
    {
        Console.WriteLine(oAttribute.ToString());
    }
}

Private Sub GetFontWeightAttribute()
    ' Start application.
    Dim p As Process = Process.Start("Notepad.exe", "text.txt")

    ' target --> The root AutomationElement.
    Dim target As AutomationElement = AutomationElement.FromHandle(p.MainWindowHandle)

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

    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
    End If

    Dim oAttribute As Object = textpatternPattern.DocumentRange.GetAttributeValue(TextPattern.FontWeightAttribute)
    If (oAttribute = TextPattern.MixedAttributeValue) Then
        Console.WriteLine("Mixed font weights.")
    Else
        Console.WriteLine(oAttribute.ToString())
    End If
End Sub

Remarks

This attribute refers to the relative stroke, thickness, or boldness of a font.

This attribute is modeled after the lfWeight field in GDI LOGFONT. For consistency, the following values have been adopted from LOGFONT: 0=DontCare, 100=Thin, 200=ExtraLight or UltraLight, 300=Light, 400=Normal or Regular, 500=Medium, 600=SemiBold or DemiBold, 700=Bold, 800=ExtraBold or UltraBold, and 900=Heavy or Black.

This identifier is used by UI Automation client applications. UI Automation providers should use the equivalent field in TextPatternIdentifiers.

UI Automation clients get the value of the attribute by calling GetAttributeValue.

Values for this attribute are of type Int32. The default value is zero.

Applies to

See also