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WindowPattern.SetWindowVisualState Method

Changes the WindowVisualState of the window.

Namespace:  System.Windows.Automation
Assembly:  UIAutomationClient (in UIAutomationClient.dll)

public void SetWindowVisualState(
	WindowVisualState state
)

Parameters

state
Type: System.Windows.Automation.WindowVisualState

The requested WindowVisualState of the window.

ExceptionCondition
InvalidOperationException

A control does not support a requested behavior.

In the following example, a WindowPattern control pattern is obtained from an AutomationElement and is subsequently used to specify the visual state of the AutomationElement.

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

    try
    {
        windowPattern =
            targetControl.GetCurrentPattern(WindowPattern.Pattern)
            as WindowPattern;
    }
    catch (InvalidOperationException)
    {
        // object doesn't support the WindowPattern control pattern 
        return null;
    }
    // Make sure the element is usable. 
    if (false == windowPattern.WaitForInputIdle(10000))
    {
        // Object not responding in a timely manner 
        return null;
    }
    return windowPattern;
}


...


///-------------------------------------------------------------------- 
/// <summary> 
/// Calls the WindowPattern.SetVisualState() method for an associated  
/// automation element. 
/// </summary> 
/// <param name="windowPattern">
/// The WindowPattern control pattern obtained from 
/// an automation element. 
/// </param> 
/// <param name="visualState">
/// The specified WindowVisualState enumeration value. 
/// </param> 
///-------------------------------------------------------------------- 
private void SetVisualState(WindowPattern windowPattern, 
    WindowVisualState visualState)
{
    try
    {
        if (windowPattern.Current.WindowInteractionState ==
            WindowInteractionState.ReadyForUserInteraction)
        {
            switch (visualState)
            {
                case WindowVisualState.Maximized:
                    // Confirm that the element can be maximized 
                    if ((windowPattern.Current.CanMaximize) && 
                        !(windowPattern.Current.IsModal))
                    {
                        windowPattern.SetWindowVisualState(
                            WindowVisualState.Maximized);
                        // TODO: additional processing
                    }
                    break;
                case WindowVisualState.Minimized:
                    // Confirm that the element can be minimized 
                    if ((windowPattern.Current.CanMinimize) &&
                        !(windowPattern.Current.IsModal))
                    {
                        windowPattern.SetWindowVisualState(
                            WindowVisualState.Minimized);
                        // TODO: additional processing
                    }
                    break;
                case WindowVisualState.Normal:
                    windowPattern.SetWindowVisualState(
                        WindowVisualState.Normal);
                    break;
                default:
                    windowPattern.SetWindowVisualState(
                        WindowVisualState.Normal);
                    // TODO: additional processing 
                    break;
            }
        }
    }
    catch (InvalidOperationException)
    {
        // object is not able to perform the requested action 
        return;
    }
}

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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