Cursor Cursor Cursor Cursor Constructors

Definition

Überlädt

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

Initialisiert eine neue Instanz der Cursor-Klasse anhand des angegebenen Windows-Handles.Initializes a new instance of the Cursor class from the specified Windows handle.

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

Initialisiert eine neue Instanz der Cursor-Klasse aus dem angegebenen Stream.Initializes a new instance of the Cursor class from the specified data stream.

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

Initialisiert eine neue Instanz der Cursor-Klasse aus der angegebenen Datei.Initializes a new instance of the Cursor class from the specified file.

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

Initialisiert eine neue Instanz der Cursor-Klasse aus der angegebenen Ressource mit dem angegebenen Ressourcentyp.Initializes a new instance of the Cursor class from the specified resource with the specified resource type.

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

Initialisiert eine neue Instanz der Cursor-Klasse anhand des angegebenen Windows-Handles.Initializes a new instance of the Cursor class from the specified Windows handle.

public:
 Cursor(IntPtr handle);
public Cursor (IntPtr handle);
new System.Windows.Forms.Cursor : nativeint -> System.Windows.Forms.Cursor
Public Sub New (handle As IntPtr)

Parameter

handle
IntPtr IntPtr IntPtr IntPtr

Ein IntPtr, der das Windows-Handle des zu erstellenden Cursors darstellt.An IntPtr that represents the Windows handle of the cursor to create.

Ausnahmen

Beispiele

Im folgenden Codebeispiel Current Handlewird ein Cursor aus dem Cursor erstellt, dessen Position und das Clippingrechteck geändert werden.The following code example creates a cursor from the Current cursor's Handle, changes its position and clipping rectangle. Das Ergebnis ist, dass der Cursor nach oben und nach links 50 Pixel wechselt, wenn der Code ausgeführt wird.The result is the cursor will move up and to the left 50 pixels from where it is when the code is executed. Außerdem wird das Clippingrechteck des Cursors in die Begrenzungen des Formulars geändert (Standardmäßig ist dies der gesamte Bildschirm des Benutzers).Additionally, the cursor's clipping rectangle is changed to the bounds of the form (by default it is the user's whole screen). Für dieses Beispiel ist es erforderlich, Form dass Sie Button über einen und einen verfügen, um diesen Code beim Klicken aufzurufen.This example requires that you have a Form and a Button to call this code when it is clicked.

void MoveCursor()
{
   // Set the Current cursor, move the cursor's Position,
   // and set its clipping rectangle to the form.

   this->Cursor = gcnew System::Windows::Forms::Cursor( ::Cursor::Current->Handle );
   ::Cursor::Position = Point(::Cursor::Position.X - 50,::Cursor::Position.Y - 50);
   ::Cursor::Clip = Rectangle(this->Location,this->Size);

}
private void MoveCursor()
{
   // Set the Current cursor, move the cursor's Position,
   // and set its clipping rectangle to the form. 

   this.Cursor = new Cursor(Cursor.Current.Handle);
   Cursor.Position = new Point(Cursor.Position.X - 50, Cursor.Position.Y - 50);
   Cursor.Clip = new Rectangle(this.Location, this.Size);
}
Private Sub MoveCursor()
   ' Set the Current cursor, move the cursor's Position,
   ' and set its clipping rectangle to the form. 

   Me.Cursor = New Cursor(Cursor.Current.Handle)
   Cursor.Position = New Point(Cursor.Position.X - 50, Cursor.Position.Y - 50)
   Cursor.Clip = New Rectangle(Me.Location, Me.Size)
End Sub

Hinweise

Wenn Sie damit abgeschlossen sind, müssen Sie das Cursor Handle freigeben.You must free the cursor handle when you are done with it. Weitere Informationen zum Freigeben von Ressourcen finden Sie unter Bereinigen von nicht verwalteten Ressourcen.For more information about disposing of resources, see Cleaning Up Unmanaged Resources.

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

Initialisiert eine neue Instanz der Cursor-Klasse aus dem angegebenen Stream.Initializes a new instance of the Cursor class from the specified data stream.

public:
 Cursor(System::IO::Stream ^ stream);
public Cursor (System.IO.Stream stream);
new System.Windows.Forms.Cursor : System.IO.Stream -> System.Windows.Forms.Cursor

Parameter

stream
Stream Stream Stream Stream

Der Datenstream, aus dem der Cursor geladen werden soll.The data stream to load the Cursor from.

Beispiele

Im folgenden Codebeispiel wird ein Cursor aus einem Stream geladen, der OpenFile von der- OpenFileDialogMethode eines erstellt wurde.The following code example loads a cursor from a Stream created by the OpenFile method of an OpenFileDialog. Wenn die-Methode aufgerufen wird, OpenFileDialog wird dem Benutzer ein angezeigt, wenn ein.When the method is called, an OpenFileDialog is displayed to the user and when a. Die CUR-Datei ist ausgewählt, und das Dialogfeld wird geschlossen, die Stream Datei wird geöffnet, und die Cursorzurückgegebene wird zum Erstellen einer verwendet.CUR file is selected and the dialog closed, the file is opened and the Stream returned is used to create a Cursor.

private:
   void SetCursor()
   {
      // Display an OpenFileDialog so the user can select a cursor.
      OpenFileDialog^ openFileDialog1 = gcnew OpenFileDialog;
      openFileDialog1->Filter = "Cursor Files|*.cur";
      openFileDialog1->Title = "Select a Cursor File";
      openFileDialog1->ShowDialog();

      // If a .cur file was selected, open it.
      if (  !openFileDialog1->FileName->Equals( "" ) )
      {
         // Assign the cursor in the stream to the form's Cursor property.
         this->Cursor = gcnew System::Windows::Forms::Cursor( openFileDialog1->OpenFile() );
      }
   }
private void SetCursor()
{
   // Display an OpenFileDialog so the user can select a cursor.
   OpenFileDialog openFileDialog1 = new OpenFileDialog();
   openFileDialog1.Filter = "Cursor Files|*.cur";
   openFileDialog1.Title = "Select a Cursor File";
   openFileDialog1.ShowDialog();

   // If a .cur file was selected, open it.
   if(openFileDialog1.FileName != "")
   {
      // Assign the cursor in the stream to the form's Cursor property.
      this.Cursor = new Cursor(openFileDialog1.OpenFile());
   }
}
Private Sub SetCursor()
   ' Display an OpenFileDialog so the user can select a Cursor.
   Dim openFileDialog1 As New OpenFileDialog()
   openFileDialog1.Filter = "Cursor Files|*.cur"
   openFileDialog1.Title = "Select a Cursor File"
   openFileDialog1.ShowDialog()
         
   ' If a .cur file was selected, open it.
   If openFileDialog1.FileName <> "" Then
      ' Assign the cursor in the stream to the form's Cursor property.
      Me.Cursor = New Cursor(openFileDialog1.OpenFile())
   End If
End Sub     

Hinweise

Der von stream angegebene Datenstrom muss eine Cursor Datei (. cur) enthalten.The data stream specified by stream must contain a cursor (.cur) file.

Hinweis

Animierte Cursor (. ANI-Dateien) werden von der Cursor -Klasse nicht unterstützt.Animated cursors (.ani files) are not supported by the Cursor class.

Siehe auch

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

Initialisiert eine neue Instanz der Cursor-Klasse aus der angegebenen Datei.Initializes a new instance of the Cursor class from the specified file.

public:
 Cursor(System::String ^ fileName);
public Cursor (string fileName);
new System.Windows.Forms.Cursor : string -> System.Windows.Forms.Cursor
Public Sub New (fileName As String)

Parameter

fileName
String String String String

Die zu ladende Cursordatei.The cursor file to load.

Beispiele

Das folgende Codebeispiel zeigt Kundeninformationen in einem TreeView -Steuerelement an.The following code example displays customer information in a TreeView control. In den Stamm Struktur Knoten werden Kundennamen angezeigt, und die untergeordneten Struktur Knoten zeigen die Bestellnummern an, die den einzelnen Kunden zugewiesen sind.The root tree nodes display customer names, and the child tree nodes display the order numbers assigned to each customer. In diesem Beispiel werden 1.000-Kunden mit jeweils 15 Bestellungen angezeigt.In this example, 1,000 customers are displayed with 15 orders each. Das erneute TreeView Zeichnen von wird mithilfe der BeginUpdate -Methode und der EndUpdate -Methode unterdrückt TreeView , Cursor und ein warte Vorgang wird angezeigt, während TreeNode die Objekte erstellt und zeichnet.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. Dieses Beispiel erfordert, dass Sie über Customer ein-Objekt verfügen, das eine Order Auflistung von-Objekten enthalten kann.This example requires that you have a Customer object that can hold a collection of Order objects. Außerdem ist es erforderlich, dass Sie eine Instanz eines TreeView -Steuer Elements auf einem Formerstellt haben.It also requires 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

Hinweise

Der fileName -Parameter muss auf eine Standard Cursor Datei (. cur) verweisen.The fileName parameter must reference a standard cursor (.cur) file.

Hinweis

Animierte Cursor (. ANI-Dateien) werden von der Cursor -Klasse nicht unterstützt.Animated cursors (.ani files) are not supported by the Cursor class.

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

Initialisiert eine neue Instanz der Cursor-Klasse aus der angegebenen Ressource mit dem angegebenen Ressourcentyp.Initializes a new instance of the Cursor class from the specified resource with the specified resource type.

public:
 Cursor(Type ^ type, System::String ^ resource);
public Cursor (Type type, string resource);
new System.Windows.Forms.Cursor : Type * string -> System.Windows.Forms.Cursor

Parameter

type
Type Type Type Type

Die Ressource Type.The resource Type.

resource
String String String String

Der Name der Ressource.The name of the resource.

Beispiele

Im folgenden Codebeispiel wird ein Formular angezeigt, das die Verwendung eines benutzerdefinierten Cursors Cursor mithilfe des-Konstruktors veranschaulicht.The following code example displays a form that demonstrates using a custom cursor by using the Cursor constructor. Der Benutzer Cursor definierte ist in die Ressourcen Datei der Anwendung eingebettet.The custom Cursor is embedded in the application's resource file. Für das Beispiel muss ein Cursor in einer Cursor Datei mit dem Namen MyCursor.curenthalten sein.The example requires that you have a cursor contained in a cursor file named MyCursor.cur. Um dieses Beispiel mit der Befehlszeile zu kompilieren, fügen Sie das folgende Flag ein:/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

Hinweise

Im folgenden finden Sie ein Beispiel dafür, wie Sie einen Cursor als Ressource in Ihre Anwendung einbetten.The following is an example of how to embed a cursor as a resource within your application. Zum Einbetten der Ressource verweisen Sie auf den Ressourcennamen, gefolgt von einem Komma und dem vollständigen Assemblypfad.To embed the resource, reference the resource name followed by a comma, then its full assembly path. Weitere Informationen zum Laden des Cursors aus der eingebetteten Ressource finden Sie im Abschnitt "Beispiel".See the Example section to learn how to load the cursor from the embedded resource.

Using the C# compiler:  
csc /resource:"MyWaitCursor.cur","MyCursors.MyWaitCursor.cur" MyCursor.cs  
Using the Visual Basic compiler:  
vbc /resource:"MyWaitCursor.cur","MyCursors.MyWaitCursor.cur" MyCursor.vb  

Hinweis

Beim Kompilieren und beim Verweisen auf den Ressourcen Verweis im Code wird die Groß-/Kleinschreibung sowohl für die C# -als auch die-Visual Basic Compiler beachtet.The resource reference when compiling as well as when referencing it in code, is case sensitive for both the C# and Visual Basic compilers.

Gilt für: