RealTimeStylus.Enabled - свойство

Статья
11/04/2008

Обновлен: Ноябрь 2007

Gets or sets a value which indicates whether the RealTimeStylus object is enabled.

Пространство имен: Microsoft.StylusInput
Сборка: Microsoft.Ink (в Microsoft.Ink.dll)

Синтаксис

'Декларация
Public Property Enabled As Boolean
'Применение
Dim instance As RealTimeStylus
Dim value As Boolean

value = instance.Enabled

instance.Enabled = value

public bool Enabled { get; set; }

public:
property bool Enabled {
    bool get ();
    void set (bool value);
}

/** @property */
public boolean get_Enabled()
/** @property */
public  void set_Enabled(boolean value)

public function get Enabled () : boolean
public function set Enabled (value : boolean)

Значение свойства

Тип: System.Boolean
Whether the RealTimeStylus object is enabled.

Value	Meaning
true	The RealTimeStylus object is enabled and can collect stylus data.
false	The RealTimeStylus object is disabled. Stylus data is not collected.

Заметки

This property throws an exception under the following conditions.

The RealTimeStylus object is disposed.
This property is set on a RealTimeStylus object that was created with the RealTimeStylus() constructor.
The RealTimeStylus object's window input rectangle overlaps the window input rectangle of an enabled RealTimeStylus object.
No plug-ins have been added to the RealTimeStylus object.

Примечание.
You can remove all the plug-ins from the RealTimeStylus object while Enabled is true. Removing all the plug-ins does not change the value of Enabled.

Примечание.
Setting the property can cause a reentrant call when used within certain message handlers, causing unexpected results. Take care to avoid a reentrant call when handling any of the following messages: WM_ACTIVATE, WM_ACTIVATEAPP, WM_NCACTIVATE, WM_PAINT; WM_SYSCOMMAND if wParam is set to SC_HOTKEY or SC_TASKLIST; and WM_SYSKEYDOWN (when processing Alt-Tab or Alt-Esc key combinations). This is an issue with single-threaded apartment model applications.

Setting the property can cause a reentrant call when used within certain message handlers, causing unexpected results. Take care to avoid a reentrant call when handling any of the following messages: WM_ACTIVATE, WM_ACTIVATEAPP, WM_NCACTIVATE, WM_PAINT; WM_SYSCOMMAND if wParam is set to SC_HOTKEY or SC_TASKLIST; and WM_SYSKEYDOWN (when processing Alt-Tab or Alt-Esc key combinations). This is an issue with single-threaded apartment model applications.

Примеры

This Microsoft Visual C# .NET example is a snippet from a form's Load event handler, which creates a GestureRecognizer, DynamicRenderer, and two RealTimeStylus objects, attaches the objects in a cascaded RealTimeStylus model, and enables dynamic rendering, gesture recognition, and tablet pen data collection through the RealTimeStylus object. The GestureRecognizer object is set to recognize single-stroke gestures and to recognize only the ApplicationGesture, ApplicationGesture, and ApplicationGesture application gesture. The primary RealTimeStylus object's WindowInputRectangle property is explicitly set to use the entire control to which the RealTimeStylus object is attached. The form itself implements the IStylusAsyncPlugin interface and is attached to the RealTimeStylus object.

using Microsoft.Ink;
using Microsoft.StylusInput;
using Microsoft.StylusInput.PluginData;

// ...

// The panel where the tablet pen data is collected.
private System.Windows.Forms.Panel thePanel;

// Declare the RealTimeStylus objects, the GestureRecognizer plugin,
// and the DynamicRenderer plug-in.
private Microsoft.StylusInput.RealTimeStylus thePrimaryRealTimeStylus = null;
private Microsoft.StylusInput.RealTimeStylus theSecondaryRealTimeStylus = null;
private Microsoft.StylusInput.GestureRecognizer theGestureRecognizer = null;
private Microsoft.StylusInput.DynamicRenderer theDynamicRenderer = null;

// The form's Load event handler.
private void theForm_Load(object sender, System.EventArgs e)
{
    // ...

    // Create a DynamicRenderer attached to the drawing area ,
    // and enable dynamic rendering.
    this.theDynamicRenderer = new DynamicRenderer(this.thePanel);
    this.theDynamicRenderer.Enabled = true;

    // Create a GestureRecognizer, and set it to recognize single-stroke gestures.
    this.theGestureRecognizer = new GestureRecognizer();
    this.theGestureRecognizer.MaxStrokeCount = 1;

    // Allow gesture recognition for specific gestures.
    this.theGestureRecognizer.EnableGestures( new ApplicationGesture[]
        {
            ApplicationGesture.Right,
            ApplicationGesture.ChevronRight,
            ApplicationGesture.ArrowRight
        } );

    // Enable gesture recognition.
    this.theGestureRecognizer.Enabled = true;

    // Create the primary and secondary RealTimeStylus objects.
    this.thePrimaryRealTimeStylus = new RealTimeStylus(this.thePanel);
    this.theSecondaryRealTimeStylus = new RealTimeStylus();

    // Add the secondary RealTimeStylus to the primary's asynchronous plug-in collection.
    this.thePrimaryRealTimeStylus.AsyncPluginCollection.Add(
        this.theSecondaryRealTimeStylus);

    // Add the dynamic renderer to the primary's synchronous plug-in collection.
    this.thePrimaryRealTimeStylus.SyncPluginCollection.Add(this.theDynamicRenderer);

    // Add the gesture recognizer to the secondary's synchronous plug-in collection.
    this.theSecondaryRealTimeStylus.SyncPluginCollection.Add(this.theGestureRecognizer);

    // Add the form to the secondary's asynchronous plug-in colleciton.
    this.theSecondaryRealTimeStylus.AsyncPluginCollection.Add(this);

    // Set the input rectangle to the entire panel for the RealTimeStylus.
    this.thePrimaryRealTimeStylus.WindowInputRectangle = new Rectangle(0,0,0,0);

    // Enable the RealTimeStylus, which allows notifications to flow to the plug-ins.
    this.thePrimaryRealTimeStylus.Enabled = true;

    // ...
}

Платформы

Windows Vista, Windows XP с пакетом обновления 2 (SP2), Windows Server 2003

Среды .NET Framework и .NET Compact Framework поддерживают не все версии каждой платформы. Поддерживаемые версии перечислены в разделе Требования к системе для .NET Framework.