Cursor Construtores

Origem:

Cursor.cs

Origem:

Cursor.cs

Origem:

Cursor.cs

Origem:

Cursor.cs

Origem:

Cursor.cs

public:
 Cursor(IntPtr handle);

public Cursor(IntPtr handle);

new System.Windows.Forms.Cursor : nativeint -> System.Windows.Forms.Cursor

Public Sub New (handle As IntPtr)

Parâmetros

Exceções

Exemplos

O exemplo de código a seguir cria um cursor do Current cursor Handle, altera sua posição e retângulo de recorte. O resultado é que o cursor se moverá para cima e para a esquerda a 50 pixels de onde ele está quando o código é executado. Além disso, o retângulo de recorte do cursor é alterado para os limites do formulário (por padrão, é a tela inteira do usuário). Este exemplo requer que você tenha um Form e um Button para chamar esse código quando ele for clicado.

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

Comentários

Você deve liberar o identificador do cursor quando terminar de usá-lo. Para obter mais informações sobre o descarte de recursos, consulte Limpeza de recursos não gerenciados.

Origem:

Cursor.cs

Origem:

Cursor.cs

Origem:

Cursor.cs

Origem:

Cursor.cs

Origem:

Cursor.cs

public:
 Cursor(System::IO::Stream ^ stream);

public Cursor(System.IO.Stream stream);

new System.Windows.Forms.Cursor : System.IO.Stream -> System.Windows.Forms.Cursor

Public Sub New (stream As Stream)

Parâmetros

Exemplos

O exemplo de código a seguir carrega um cursor de um Stream criado pelo OpenFile método de um OpenFileDialog. Quando o método é chamado, um OpenFileDialog é exibido para o usuário e quando um. O arquivo CUR é selecionado e a caixa de diálogo fechada, o arquivo é aberto e o Stream retornado é usado para criar um 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

Comentários

O fluxo de dados especificado deve stream conter um arquivo de cursor (.cur).

Confira também

• Stream

Origem:

Cursor.cs

Origem:

Cursor.cs

Origem:

Cursor.cs

Origem:

Cursor.cs

Origem:

Cursor.cs

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)

Parâmetros

Exemplos

O exemplo de código a seguir exibe informações do cliente em um TreeView controle. Os nós de árvore raiz exibem nomes de clientes e os nós de árvore filho exibem os números de pedido atribuídos a cada cliente. Neste exemplo, 1.000 clientes são exibidos com 15 pedidos cada. O repositório do TreeView é suprimido usando os métodos e BeginUpdate os EndUpdate métodos, e uma espera Cursor é exibida enquanto os TreeView cria e pinta os TreeNode objetos. Este exemplo requer que você tenha um Customer objeto que possa conter uma coleção de Order objetos. Ele também requer que você tenha criado uma instância de um TreeView controle em um 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


Public Class Order
   Inherits [Object]
   Private ordID As String

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

   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

' 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

Comentários

O fileName parâmetro deve referenciar um arquivo de cursor padrão (.cur).

Origem:

Cursor.cs

Origem:

Cursor.cs

Origem:

Cursor.cs

Origem:

Cursor.cs

Origem:

Cursor.cs

public:
 Cursor(Type ^ type, System::String ^ resource);

public Cursor(Type type, string resource);

new System.Windows.Forms.Cursor : Type * string -> System.Windows.Forms.Cursor

Public Sub New (type As Type, resource As String)

Parâmetros

Exemplos

O exemplo de código a seguir exibe um formulário que demonstra o uso de um cursor personalizado usando o Cursor construtor. O personalizado Cursor é inserido no arquivo de recurso do aplicativo. O exemplo requer que você tenha um cursor contido em um arquivo de cursor chamado MyCursor.cur. Para compilar este exemplo usando a linha de comando, inclua o seguinte sinalizador: /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.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

      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
   End Class
End Namespace 'CustomCursor

Comentários

Veja a seguir um exemplo de como inserir um cursor como um recurso em seu aplicativo. Para inserir o recurso, faça referência ao nome do recurso seguido por uma vírgula e, em seguida, seu caminho de assembly completo. Consulte a seção Exemplo para saber como carregar o cursor do recurso inserido.

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