Device.Present Method

Articolo
10/15/2009

[This documentation is for preview only, and is subject to change in later releases. Blank topics are included as placeholders.]

Presents the display with the contents of the next buffer in the sequence of back buffers owned by the device.

Namespace: Microsoft.WindowsMobile.DirectX.Direct3D
Assembly: Microsoft.WindowsMobile.DirectX (in Microsoft.WindowsMobile.DirectX.dll)

Syntax

'Declaration
Public Sub Present
'Usage
Dim instance As Device

instance.Present()

public void Present()

public:
void Present()

member Present : unit -> unit

Exceptions

Exception	Condition
DriverInternalErrorException	Internal driver error. Applications should generally shut down when receiving this error.
DeviceLostException	The device is lost but cannot be reset at this time. Therefore, rendering is not possible.
InvalidCallException	The method call is invalid. For example, a method's parameter might contain an invalid value.

Remarks

If necessary, a stretch operation is applied to transfer the pixels within the source rectangle to the destination rectangle in the client area of the target window.

This method fails and throws an InvalidCallException exception if it is called between BeginScene and EndScene pairs, unless the render target is not the current render target .For example, this can happen with a back buffer that results from the creation of an additional swap chain.

Examples

The following example demonstrates how to use the Present method.

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

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();
}

.NET Framework Security

Full trust for the immediate caller. This member cannot be used by partially trusted code. For more information, see Using Libraries from Partially Trusted Code.

Platforms

Windows CE, Windows Mobile for Smartphone, Windows Mobile for Pocket PC

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

Version Information

.NET Compact Framework

Supported in: 3.5, 2.0

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