Classe Device

Aggiornamento: novembre 2007

Oggetto padre di tutti gli oggetti grafici della scena.

Spazio dei nomi:  Microsoft.WindowsMobile.DirectX.Direct3D
Assembly:  Microsoft.WindowsMobile.DirectX (in Microsoft.WindowsMobile.DirectX.dll)

Sintassi

'Dichiarazione
Public Class Device _
    Implements IDisposable
'Utilizzo
Dim instance As Device

public class Device : IDisposable

public ref class Device : IDisposable

public class Device implements IDisposable

Note

Una periferica esegue il rendering basato sulle primitive, crea risorse, gestisce variabili a livello di sistema, ottiene e imposta tavolozze.

Esempi

Nell'esempio di codice riportato di seguito viene creata una periferica.

Public Class Form1
    Inherits Form
    ' Set global variables for this project.
    Private device As Device = Nothing
    Public Sub New()
        ' Set the initial size and caption of the form.
        Me.ClientSize = New System.Drawing.Size(400, 300)
        Me.Text = "D3D Tutorial 01: CreateDevice"

    End Sub 'New


    Public Function InitializeGraphics() As Boolean
        Try
            ' Set up presentation parameters and create the Direct3D
            ' device.
            Dim presentParams As New PresentParameters()
            presentParams.Windowed = True
            presentParams.SwapEffect = SwapEffect.Discard
            device = New Device(0, DeviceType.Default, Me, CreateFlags.None, presentParams)
            Return True
        Catch
            Return False
        End Try

    End Function
    Private Sub Render()
        If device Is Nothing Then
            Return
        End If
        'Clear the backbuffer to a blue color. 
        device.Clear(ClearFlags.Target, System.Drawing.Color.Blue, 1.0F, 0)
        'Begin the scene.
        device.BeginScene()

        'Render scene objects, if desired.
        'End the scene.
        device.EndScene()
        device.Present()

    End Sub
    Protected Overrides Sub OnPaint(ByVal e As System.Windows.Forms.PaintEventArgs)
        ' Render on painting.
        Me.Render()
    End Sub

    Protected Overrides Sub OnKeyPress(ByVal e As System.Windows.Forms.KeyPressEventArgs)
        If Fix(System.Convert.ToByte(e.KeyChar)) = Fix(System.Windows.Forms.Keys.Escape) Then
            ' Handle the ESC key being pressed.
            Me.Close()
        End If

    End Sub

    Shared Sub Main()

        Dim DeviceForm As New Form1()
        Try
            If Not DeviceForm.InitializeGraphics() Then
                ' Initialize Direct3D.
                MsgBox("Could not initialize Direct3D.  This tutorial will exit.")
                Return
            End If
            DeviceForm.Show()

            'While the form is still valid, render and process messages.
            'While DeviceForm.Created
            '    DeviceForm.Render()
            '    Application.DoEvents()
            'End While
        Finally
            DeviceForm.Dispose()
        End Try

    End Sub
End Class

public class CreateDevice : Form
{
    // Set global variables for this project.
    Device device = null;

    public CreateDevice()
    {
        // Set the initial size of the form.
        this.ClientSize = new System.Drawing.Size(400, 300);
        // Set the caption for the form.
        this.Text = "D3D Tutorial 01: CreateDevice";
    }

    public bool InitializeGraphics()
    {
        try
        {
            // Set up presentation parameters and create the 
            // Direct3D device.
            PresentParameters presentParams = new PresentParameters();
            presentParams.Windowed = true;
            presentParams.SwapEffect = SwapEffect.Discard;
            device = new Device(0, DeviceType.Default, this, CreateFlags.None, presentParams);
            return true;
        }
        catch (DirectXException)
        {
            return false;
        }
    }
    private void Render()
    {
        if (device == null)
            return;

        //Clear the backbuffer to a blue color. 
        device.Clear(ClearFlags.Target, System.Drawing.Color.Blue, 1.0f, 0);
        //Begin the scene.
        device.BeginScene();

        // Rendering scene objects, if desired.

        //End the scene.
        device.EndScene();
        device.Present();
    }
    protected override void OnPaint(System.Windows.Forms.PaintEventArgs e)
    {
        // Render on painting.
        this.Render();
    }
    protected override void OnKeyPress(System.Windows.Forms.KeyPressEventArgs e)
    {
        if ((int)(byte)e.KeyChar == (int)System.Windows.Forms.Keys.Escape)
            // Handle the ESC key being pressed.
            this.Close();
    }

    /// <Summary>
    /// The main entry point for the application.
    /// </Summary>
    static void Main()
    {

        using (CreateDevice DeviceForm = new CreateDevice())
        {
            // Initialize Direct3D.
            if (!DeviceForm.InitializeGraphics())
            {
                MessageBox.Show("Could not initialize Direct3D.  This tutorial will exit.");
                return;
            }
            DeviceForm.Show();

            // While the form is still valid, render and process messages.
            // while (DeviceForm.Created)
            //{
                DeviceForm.Render();
                Application.DoEvents();
            //}
        }
    }
}

Gerarchia di ereditarietà

System.Object
  Microsoft.WindowsMobile.DirectX.Direct3D.Device

Codice thread safe

Qualsiasi membro static (Shared in Visual Basic) pubblico di questo tipo è thread-safe. I membri di istanza non sono garantiti come thread-safe.

Piattaforme

Windows CE, Windows Mobile per Smartphone, Windows Mobile per Pocket PC

.NET Framework e .NET Compact Framework non supportano tutte le versioni di ciascuna piattaforma. Per un elenco delle versioni supportate, vedere Requisiti di sistema di .NET Framework.

Informazioni sulla versione

.NET Compact Framework

Supportato in: 3.5, 2.0

Vedere anche

Riferimenti

Membri Device

Spazio dei nomi Microsoft.WindowsMobile.DirectX.Direct3D

Altre risorse

Programmazione per Mobile Direct3D in .NET Compact Framework