Cursor Cursor Cursor Cursor Class

Definición

Representa la imagen que se utiliza para dibujar el puntero del mouse.Represents the image used to paint the mouse pointer.

public ref class Cursor sealed : IDisposable, System::Runtime::Serialization::ISerializable
[System.ComponentModel.TypeConverter(typeof(System.Windows.Forms.CursorConverter))]
[System.Serializable]
public sealed class Cursor : IDisposable, System.Runtime.Serialization.ISerializable
type Cursor = class
    interface IDisposable
    interface ISerializable
Public NotInheritable Class Cursor
Implements IDisposable, ISerializable
Herencia
CursorCursorCursorCursor
Atributos
Implementaciones

Ejemplos

En el ejemplo de código siguiente se muestra un formulario que muestra cómo utilizar un cursor personalizado.The following code example displays a form that demonstrates using a custom cursor. Personalizado Cursor está incrustado en el archivo de recursos de la aplicación.The custom Cursor is embedded in the application's resource file. El ejemplo requiere un cursor dentro de un archivo de cursor denominado MyCursor.cur.The example requires a cursor contained in a cursor file named MyCursor.cur. Para compilar este ejemplo utilizando la línea de comandos, incluir la marca siguiente: /res:MyCursor.Cur, CustomCursor.MyCursor.CurTo compile this example using the command line, include the following flag: /res:MyCursor.Cur, CustomCursor.MyCursor.Cur

using System;
using System.Drawing;
using System.Windows.Forms;

namespace CustomCursor
{
    public class Form1 : System.Windows.Forms.Form
    {
        [STAThread]
        static void Main() 
        {
            Application.Run(new Form1());
        }

        public Form1()
        {
            this.ClientSize = new System.Drawing.Size(292, 266);
            this.Text = "Cursor Example";
            
            // The following generates a cursor from an embedded resource.
            
            // To add a custom cursor, create a bitmap
            //        1. Add a new cursor file to your project: 
            //                Project->Add New Item->General->Cursor File

            // --- To make the custom cursor an embedded resource  ---
            
            // In Visual Studio:
            //        1. Select the cursor file in the Solution Explorer
            //        2. Choose View->Properties.
            //        3. In the properties window switch "Build Action" to "Embedded Resources"

            // On the command line:
            //        Add the following flag:
            //            /res:CursorFileName.cur,Namespace.CursorFileName.cur
            //        
            //        Where "Namespace" is the namespace in which you want to use the cursor
            //        and   "CursorFileName.cur" is the cursor filename.

            // The following line uses the namespace from the passed-in type
            // and looks for CustomCursor.MyCursor.Cur in the assemblies manifest.
	    // NOTE: The cursor name is acase sensitive.
            this.Cursor = new Cursor(GetType(), "MyCursor.cur");  
           
        }
    }
}
Imports System
Imports System.Drawing
Imports System.Windows.Forms

Namespace CustomCursor
   
   Public Class Form1
      Inherits System.Windows.Forms.Form
      
      <System.STAThread()> _
      Public Shared Sub Main()
         System.Windows.Forms.Application.Run(New Form1())
      End Sub 'Main

      Public Sub New()

         Me.ClientSize = New System.Drawing.Size(292, 266)
         Me.Text = "Cursor Example"
         
        ' The following generates a cursor from an embedded resource.
         
        'To add a custom cursor, create a bitmap
        '       1. Add a new cursor file to your project: 
        '               Project->Add New Item->General->Cursor File

        '--- To make the custom cursor an embedded resource  ---

        'In Visual Studio:
        '       1. Select the cursor file in the Solution Explorer
        '       2. Choose View->Properties.
        '       3. In the properties window switch "Build Action" to "Embedded Resources"

        'On the command line:
        '       Add the following flag:
        '           /res:CursorFileName.cur,Namespace.CursorFileName.cur

        '       Where "Namespace" is the namespace in which you want to use the cursor
        '       and   "CursorFileName.cur" is the cursor filename.

        'The following line uses the namespace from the passed-in type
        'and looks for CustomCursor.MyCursor.cur in the assemblies manifest.
        'NOTE: The cursor name is acase sensitive.
        Me.Cursor = New Cursor(Me.GetType(), "MyCursor.cur")
      End Sub 'New       
   End Class 'Form1
End Namespace 'CustomCursor

En el ejemplo de código siguiente se muestra la información del cliente en un TreeView control.The following code example displays customer information in a TreeView control. Los nodos de árbol raíz mostrar nombres de los clientes y los nodos secundarios muestran los números de pedido asignados a cada cliente.The root tree nodes display customer names, and the child tree nodes display the order numbers assigned to each customer. En este ejemplo, se muestran 1.000 clientes con 15 pedidos.In this example, 1,000 customers are displayed with 15 orders each. La actualización de la pantalla de la TreeView se suprime mediante el uso de la BeginUpdate y EndUpdate métodos y una espera Cursor se muestra mientras el TreeView crea y se pinta el TreeNode objetos.The repainting of the TreeView is suppressed by using the BeginUpdate and EndUpdate methods, and a wait Cursor is displayed while the TreeView creates and paints the TreeNode objects. En este ejemplo requiere que tenga un archivo de cursor denominado MyWait.cur en el directorio de la aplicación.This example requires that you have a cursor file named MyWait.cur in the application directory. También requiere un Customer objeto que contiene una colección de Order objetos y que ha creado una instancia de un TreeView control en un Form.It also requires a Customer object that can hold a collection of Order objects, and that you have created an instance of a TreeView control on a Form.

// The basic Customer class.
ref class Customer: public System::Object
{
private:
   String^ custName;

protected:
   ArrayList^ custOrders;

public:
   Customer( String^ customername )
   {
      custName = "";
      custOrders = gcnew ArrayList;
      this->custName = customername;
   }


   property String^ CustomerName 
   {
      String^ get()
      {
         return this->custName;
      }

      void set( String^ value )
      {
         this->custName = value;
      }

   }

   property ArrayList^ CustomerOrders 
   {
      ArrayList^ get()
      {
         return this->custOrders;
      }

   }

};


// End Customer class
// The basic customer Order class.
ref class Order: public System::Object
{
private:
   String^ ordID;

public:
   Order( String^ orderid )
   {
      ordID = "";
      this->ordID = orderid;
   }


   property String^ OrderID 
   {
      String^ get()
      {
         return this->ordID;
      }

      void set( String^ value )
      {
         this->ordID = value;
      }

   }

};
// End Order class



void FillMyTreeView()
{
   // Add customers to the ArrayList of Customer objects.
   for ( int x = 0; x < 1000; x++ )
   {
      customerArray->Add( gcnew Customer( "Customer " + x ) );
   }
   
   // Add orders to each Customer object in the ArrayList.
   IEnumerator^ myEnum = customerArray->GetEnumerator();
   while ( myEnum->MoveNext() )
   {
      Customer^ customer1 = safe_cast<Customer^>(myEnum->Current);
      for ( int y = 0; y < 15; y++ )
      {
         customer1->CustomerOrders->Add( gcnew Order( "Order " + y ) );
      }
   }

   // Display a wait cursor while the TreeNodes are being created.
   ::Cursor::Current = gcnew System::Windows::Forms::Cursor( "MyWait.cur" );
   
   // Suppress repainting the TreeView until all the objects have been created.
   treeView1->BeginUpdate();
   
   // Clear the TreeView each time the method is called.
   treeView1->Nodes->Clear();
   
   // Add a root TreeNode for each Customer object in the ArrayList.
   myEnum = customerArray->GetEnumerator();
   while ( myEnum->MoveNext() )
   {
      Customer^ customer2 = safe_cast<Customer^>(myEnum->Current);
      treeView1->Nodes->Add( gcnew TreeNode( customer2->CustomerName ) );
      
      // Add a child treenode for each Order object in the current Customer object.
      IEnumerator^ myEnum = customer2->CustomerOrders->GetEnumerator();
      while ( myEnum->MoveNext() )
      {
         Order^ order1 = safe_cast<Order^>(myEnum->Current);
         treeView1->Nodes[ customerArray->IndexOf( customer2 ) ]->Nodes->Add( gcnew TreeNode( customer2->CustomerName + "." + order1->OrderID ) );
      }
   }
   
   // Reset the cursor to the default for all controls.
   ::Cursor::Current = Cursors::Default;
   
   // Begin repainting the TreeView.
   treeView1->EndUpdate();
}

// The basic Customer class.
public class Customer : System.Object
{
   private string custName = "";
   protected ArrayList custOrders = new ArrayList();

   public Customer(string customername)
   {
      this.custName = customername;
   }

   public string CustomerName
   {      
      get{return this.custName;}
      set{this.custName = value;}
   }

   public ArrayList CustomerOrders 
   {
      get{return this.custOrders;}
   }

} // End Customer class 


// The basic customer Order class.
public class Order : System.Object
{
   private string ordID = "";

   public Order(string orderid)
   {
      this.ordID = orderid;
   }

   public string OrderID
   {      
      get{return this.ordID;}
      set{this.ordID = value;}
   }

} // End Order class

// Create a new ArrayList to hold the Customer objects.
private ArrayList customerArray = new ArrayList(); 

private void FillMyTreeView()
{
   // Add customers to the ArrayList of Customer objects.
   for(int x=0; x<1000; x++)
   {
      customerArray.Add(new Customer("Customer" + x.ToString()));
   }

   // Add orders to each Customer object in the ArrayList.
   foreach(Customer customer1 in customerArray)
   {
      for(int y=0; y<15; y++)
      {
         customer1.CustomerOrders.Add(new Order("Order" + y.ToString()));    
      }
   }

   // Display a wait cursor while the TreeNodes are being created.
   Cursor.Current = new Cursor("MyWait.cur");
        
   // Suppress repainting the TreeView until all the objects have been created.
   treeView1.BeginUpdate();

   // Clear the TreeView each time the method is called.
   treeView1.Nodes.Clear();

   // Add a root TreeNode for each Customer object in the ArrayList.
   foreach(Customer customer2 in customerArray)
   {
      treeView1.Nodes.Add(new TreeNode(customer2.CustomerName));
          
      // Add a child treenode for each Order object in the current Customer object.
      foreach(Order order1 in customer2.CustomerOrders)
      {
         treeView1.Nodes[customerArray.IndexOf(customer2)].Nodes.Add(
           new TreeNode(customer2.CustomerName + "." + order1.OrderID));
      }
   }

   // Reset the cursor to the default for all controls.
   Cursor.Current = Cursors.Default;

   // Begin repainting the TreeView.
   treeView1.EndUpdate();
}
Public Class Customer
   Inherits [Object]
   Private custName As String = ""
   Friend custOrders As New ArrayList()

   Public Sub New(ByVal customername As String)
      Me.custName = customername
   End Sub

   Public Property CustomerName() As String
      Get
         Return Me.custName
      End Get
      Set(ByVal Value As String)
         Me.custName = Value
      End Set
   End Property

   Public ReadOnly Property CustomerOrders() As ArrayList
      Get
         Return Me.custOrders
      End Get
   End Property
End Class 'End Customer class


Public Class Order
   Inherits [Object]
   Private ordID As String

   Public Sub New(ByVal orderid As String)
      Me.ordID = orderid
   End Sub 'New

   Public Property OrderID() As String
      Get
         Return Me.ordID
      End Get
      Set(ByVal Value As String)
         Me.ordID = Value
      End Set
   End Property
End Class ' End Order class

' Create a new ArrayList to hold the Customer objects.
Private customerArray As New ArrayList()

Private Sub FillMyTreeView()
   ' Add customers to the ArrayList of Customer objects.
   Dim x As Integer
   For x = 0 To 999
      customerArray.Add(New Customer("Customer" + x.ToString()))
   Next x

   ' Add orders to each Customer object in the ArrayList.
   Dim customer1 As Customer
   For Each customer1 In customerArray
      Dim y As Integer
      For y = 0 To 14
         customer1.CustomerOrders.Add(New Order("Order" + y.ToString()))
      Next y
   Next customer1

   ' Display a wait cursor while the TreeNodes are being created.
   Cursor.Current = New Cursor("MyWait.cur")

   ' Suppress repainting the TreeView until all the objects have been created.
   treeView1.BeginUpdate()

   ' Clear the TreeView each time the method is called.
   treeView1.Nodes.Clear()

   ' Add a root TreeNode for each Customer object in the ArrayList.
   Dim customer2 As Customer
   For Each customer2 In customerArray
      treeView1.Nodes.Add(New TreeNode(customer2.CustomerName))

      ' Add a child TreeNode for each Order object in the current Customer object.
      Dim order1 As Order
      For Each order1 In customer2.CustomerOrders
         treeView1.Nodes(customerArray.IndexOf(customer2)).Nodes.Add( _
    New TreeNode(customer2.CustomerName + "." + order1.OrderID))
      Next order1
   Next customer2

   ' Reset the cursor to the default for all controls.
   Cursor.Current = System.Windows.Forms.Cursors.Default

   ' Begin repainting the TreeView.
   treeView1.EndUpdate()
End Sub 'FillMyTreeView

Comentarios

Un cursor es una pequeña imagen cuya ubicación en la pantalla se controla mediante un dispositivo señalador, como un mouse, un lápiz o una bola de seguimiento.A cursor is a small picture whose location on the screen is controlled by a pointing device, such as a mouse, pen, or trackball. Cuando el usuario mueve el dispositivo señalador, el sistema operativo mueve el cursor en consecuencia.When the user moves the pointing device, the operating system moves the cursor accordingly.

Distintas formas de cursor se usan para informar al usuario qué operación tendrá el mouse.Different cursor shapes are used to inform the user what operation the mouse will have. Por ejemplo, al editar o selección de texto, un Cursors.IBeam normalmente se muestra el cursor.For example, when editing or selecting text, a Cursors.IBeam cursor is typically displayed. Un cursor de espera se utiliza normalmente para informar al usuario que se está ejecutando un proceso.A wait cursor is commonly used to inform the user that a process is currently running. Ejemplos de procesos en los que el usuario debe esperar están abriendo un archivo, guardar un archivo o rellenar un control como un DataGrid, ListBox o TreeView con una gran cantidad de datos.Examples of processes you might have the user wait for are opening a file, saving a file, or filling a control such as a DataGrid, ListBox or TreeView with a large amount of data.

Todos los controles que derivan de la Control clase tiene un Cursor propiedad.All controls that derive from the Control class have a Cursor property. Para cambiar el cursor que muestra el puntero del mouse cuando está dentro de los límites del control, asigne un Cursor a la Cursor propiedad del control.To change the cursor displayed by the mouse pointer when it is within the bounds of the control, assign a Cursor to the Cursor property of the control. Como alternativa, puede mostrar cursores en el nivel de aplicación mediante la asignación de un Cursor a la Current propiedad.Alternatively, you can display cursors at the application level by assigning a Cursor to the Current property. Por ejemplo, si es el propósito de la aplicación editar un archivo de texto, puede establecer el Current propiedad Cursors.WaitCursor para mostrar un cursor de espera a través de la aplicación mientras el archivo de carga ni guarda para evitar que los eventos del mouse que se está procesando.For example, if the purpose of your application is to edit a text file, you might set the Current property to Cursors.WaitCursor to display a wait cursor over the application while the file loads or saves to prevent any mouse events from being processed. Cuando finalice el proceso, establezca el Current propiedad Cursors.Default para la aplicación mostrar el cursor apropiado a través de cada tipo de control.When the process is complete, set the Current property to Cursors.Default for the application to display the appropriate cursor over each control type.

Nota

Si se llama a Application.DoEvents antes de restablecer la Current propiedad nuevo a la Cursors.Default cursor, la aplicación se reanudará la escucha de eventos del mouse y volverán a mostrarse adecuado Cursor para cada control en la aplicación.If you call Application.DoEvents before resetting the Current property back to the Cursors.Default cursor, the application will resume listening for mouse events and will resume displaying the appropriate Cursor for each control in the application.

Se pueden crear objetos de cursor de varios orígenes, como el identificador de una existente Cursor, un estándar Cursor archivo, un recurso o un flujo de datos.Cursor objects can be created from several sources, such as the handle of an existing Cursor, a standard Cursor file, a resource, or a data stream.

Nota

La Cursor clase no admite cursores animados (archivos. ani) ni cursores con colores distintos en blanco y negro.The Cursor class does not support animated cursors (.ani files) or cursors with colors other than black and white.

Si la imagen que se utiliza como un cursor es demasiado pequeña, puede usar el DrawStretched método para forzar la imagen para rellenar los límites del cursor.If the image you are using as a cursor is too small, you can use the DrawStretched method to force the image to fill the bounds of the cursor. Puede ocultar temporalmente el cursor mediante una llamada a la Hide método y restaurarlo mediante una llamada a la Show método.You can temporarily hide the cursor by calling the Hide method, and restore it by calling the Show method.

A partir de .NET Framework 4.5.2, el Cursor cambiará de tamaño en función del valor de PPP del sistema cuando el archivo app.config contiene la entrada siguiente:Starting with the .NET Framework 4.5.2, the Cursor will be resized based on the system DPI setting when the app.config file contains the following entry:

<appSettings>  
  <add key="EnableWindowsFormsHighDpiAutoResizing" value="true" />  
</appSettings>  

Constructores

Cursor(IntPtr) Cursor(IntPtr) Cursor(IntPtr) Cursor(IntPtr)

Inicializa una nueva instancia de la clase Cursor a partir del identificador de Windows especificado.Initializes a new instance of the Cursor class from the specified Windows handle.

Cursor(Stream) Cursor(Stream) Cursor(Stream) Cursor(Stream)

Inicializa una nueva instancia de la clase Cursor a partir del flujo de datos especificado.Initializes a new instance of the Cursor class from the specified data stream.

Cursor(String) Cursor(String) Cursor(String) Cursor(String)

Inicializa una nueva instancia de la clase Cursor a partir del archivo especificado.Initializes a new instance of the Cursor class from the specified file.

Cursor(Type, String) Cursor(Type, String) Cursor(Type, String) Cursor(Type, String)

Inicializa una nueva instancia de la clase Cursor a partir del recurso especificado con el tipo de recurso especificado.Initializes a new instance of the Cursor class from the specified resource with the specified resource type.

Propiedades

Clip Clip Clip Clip

Obtiene o establece los límites que representan el rectángulo de recorte del cursor.Gets or sets the bounds that represent the clipping rectangle for the cursor.

Current Current Current Current

Obtiene o establece un objeto cursor que representa el cursor del mouse.Gets or sets a cursor object that represents the mouse cursor.

Handle Handle Handle Handle

Obtiene el identificador del cursor.Gets the handle of the cursor.

HotSpot HotSpot HotSpot HotSpot

Obtiene la zona activa del cursor.Gets the cursor hot spot.

Position Position Position Position

Obtiene o establece la posición del cursor.Gets or sets the cursor's position.

Size Size Size Size

Obtiene el tamaño del objeto cursor.Gets the size of the cursor object.

Tag Tag Tag Tag

Obtiene o establece el objeto que contiene datos sobre el Cursor.Gets or sets the object that contains data about the Cursor.

Métodos

CopyHandle() CopyHandle() CopyHandle() CopyHandle()

Copia el identificador de este objeto Cursor.Copies the handle of this Cursor.

Dispose() Dispose() Dispose() Dispose()

Libera todos los recursos que usa Cursor.Releases all resources used by the Cursor.

Draw(Graphics, Rectangle) Draw(Graphics, Rectangle) Draw(Graphics, Rectangle) Draw(Graphics, Rectangle)

Dibuja el cursor en la superficie especificada y dentro de los límites especificados.Draws the cursor on the specified surface, within the specified bounds.

DrawStretched(Graphics, Rectangle) DrawStretched(Graphics, Rectangle) DrawStretched(Graphics, Rectangle) DrawStretched(Graphics, Rectangle)

Dibuja el cursor en formato ajustado sobre la superficie especificada, dentro de los límites especificados.Draws the cursor in a stretched format on the specified surface, within the specified bounds.

Equals(Object) Equals(Object) Equals(Object) Equals(Object)

Devuelve un valor que indica si este cursor es igual que el Cursor especificado.Returns a value indicating whether this cursor is equal to the specified Cursor.

Finalize() Finalize() Finalize() Finalize()

Permite que un objeto intente liberar recursos y realizar otras operaciones de limpieza antes de que sea reclamado por la recolección de elementos no utilizados.Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection.

GetHashCode() GetHashCode() GetHashCode() GetHashCode()

Recupera el código hash del Cursor actual.Retrieves the hash code for the current Cursor.

GetType() GetType() GetType() GetType()

Obtiene el Type de la instancia actual.Gets the Type of the current instance.

(Inherited from Object)
Hide() Hide() Hide() Hide()

Oculta el cursor.Hides the cursor.

MemberwiseClone() MemberwiseClone() MemberwiseClone() MemberwiseClone()

Crea una copia superficial del objeto Object actual.Creates a shallow copy of the current Object.

(Inherited from Object)
Show() Show() Show() Show()

Muestra el cursor.Displays the cursor.

ToString() ToString() ToString() ToString()

Recupera una cadena inteligible para el usuario que representa este Cursor.Retrieves a human readable string representing this Cursor.

Operadores

Equality(Cursor, Cursor) Equality(Cursor, Cursor) Equality(Cursor, Cursor) Equality(Cursor, Cursor)

Devuelve un valor que indica si dos instancias de la clase Cursor son iguales.Returns a value indicating whether two instances of the Cursor class are equal.

Inequality(Cursor, Cursor) Inequality(Cursor, Cursor) Inequality(Cursor, Cursor) Inequality(Cursor, Cursor)

Devuelve un valor que indica si dos instancias de la clase Cursor no son iguales.Returns a value indicating whether two instances of the Cursor class are not equal.

Implementaciones de interfaz explícitas

ISerializable.GetObjectData(SerializationInfo, StreamingContext) ISerializable.GetObjectData(SerializationInfo, StreamingContext) ISerializable.GetObjectData(SerializationInfo, StreamingContext) ISerializable.GetObjectData(SerializationInfo, StreamingContext)

Serializa el objeto.Serializes the object.

Se aplica a

Consulte también: