TransformPattern.Resize(Double, Double) Método

Definição

Namespace:

System.Windows.Automation

Assembly:

UIAutomationClient.dll

Redimensiona o controle.

public:
 void Resize(double width, double height);

public void Resize (double width, double height);

member this.Resize : double * double -> unit

Public Sub Resize (width As Double, height As Double)

Parâmetros

width

Double

A nova largura da janela, em pixels.

height

Double

A nova altura da janela, em pixels.

Exceções

InvalidOperationException

A propriedade CanResize é false.

Exemplos

No exemplo a seguir, um TransformPattern padrão de controle é obtido de um AutomationElement e posteriormente usado para redimensionar o AutomationElement.

///--------------------------------------------------------------------
/// <summary>
/// Obtains a TransformPattern control pattern from 
/// an automation element.
/// </summary>
/// <param name="targetControl">
/// The automation element of interest.
/// </param>
/// <returns>
/// A TransformPattern object.
/// </returns>
///--------------------------------------------------------------------
private TransformPattern GetTransformPattern(
    AutomationElement targetControl)
{
    TransformPattern transformPattern = null;

    try
    {
        transformPattern =
            targetControl.GetCurrentPattern(TransformPattern.Pattern)
            as TransformPattern;
    }
    catch (InvalidOperationException)
    {
        // object doesn't support the TransformPattern control pattern
        return null;
    }

    return transformPattern;
}

'''--------------------------------------------------------------------
''' <summary>
''' Obtains a TransformPattern control pattern from 
''' an automation element.
''' </summary>
''' <param name="targetControl">
''' The automation element of interest.
''' </param>
''' <returns>
''' A TransformPattern object.
''' </returns>
'''--------------------------------------------------------------------
Private Function GetTransformPattern( _
ByVal targetControl As AutomationElement) As TransformPattern
    Dim transformPattern As TransformPattern = Nothing

    Try
        transformPattern = DirectCast( _
        targetControl.GetCurrentPattern(transformPattern.Pattern), _
        TransformPattern)
    Catch exc As InvalidOperationException
        ' object doesn't support the TransformPattern control pattern
        Return Nothing
    End Try

    Return transformPattern

End Function 'GetTransformPattern

///--------------------------------------------------------------------
/// <summary>
/// Calls the TransformPattern.Resize() method for an associated 
/// automation element.
/// </summary>
/// <param name="transformPattern">
/// The TransformPattern control pattern obtained from
/// an automation element.
/// </param>
/// <param name="width">
/// The requested width of the automation element.
/// </param>
/// <param name="height">
/// The requested height of the automation element.
/// </param>
///--------------------------------------------------------------------
private void ResizeElement(
    TransformPattern transformPattern, double width, double height)
{
    try
    {
        if (transformPattern.Current.CanResize)
        {
            transformPattern.Resize(width, height);
        }
    }
    catch (InvalidOperationException)
    {
        // object is not able to perform the requested action
        return;
    }
}

'''--------------------------------------------------------------------
''' <summary>
''' Calls the TransformPattern.Resize() method for an associated 
''' automation element.
''' </summary>
''' <param name="transformPattern">
''' The TransformPattern control pattern obtained from
''' an automation element.
''' </param>
''' <param name="width">
''' The requested width of the automation element.
''' </param>
''' <param name="height">
''' The requested height of the automation element.
''' </param>
'''--------------------------------------------------------------------
Private Sub ResizeElement( _
ByVal transformPattern As TransformPattern, _
ByVal width As Double, ByVal height As Double)
    Try
        If transformPattern.Current.CanResize Then
            transformPattern.Resize(width, height)
        End If
    Catch
        ' object is not able to perform the requested action
        Return
    End Try

End Sub

Comentários

Quando chamado em um controle que dá suporte a painéis divididos, esse método pode ter o efeito colateral do redimensionamento de outros painéis contíguos.

Um objeto não pode ser movido, redimensionado ou girado de modo que seu local de tela resultante esteja completamente fora das coordenadas de seu contêiner e inacessível para teclado ou mouse. Por exemplo, quando uma janela de nível superior é movida completamente fora da tela ou um objeto filho é movido para fora dos limites do visor do contêiner. Nesses casos, o objeto é colocado o mais próximo possível das coordenadas de tela solicitadas com as coordenadas superiores ou esquerdas substituídas para estar dentro dos limites do contêiner.