BitmapEffect.CreateUnmanagedEffect Método

Definición

Espacio de nombres:

System.Windows.Media.Effects

Ensamblado:

PresentationCore.dll

Precaución

BitmapEffects are deprecated and no longer function. Consider using Effects where appropriate instead.

Cuando se invalida en una clase derivada, crea un clon del efecto no administrado.

protected:
 abstract System::Runtime::InteropServices::SafeHandle ^ CreateUnmanagedEffect();

protected abstract System.Runtime.InteropServices.SafeHandle CreateUnmanagedEffect ();

[System.Obsolete("BitmapEffects are deprecated and no longer function.  Consider using Effects where appropriate instead.")]
[System.Security.SecurityCritical]
protected abstract System.Runtime.InteropServices.SafeHandle CreateUnmanagedEffect ();

[System.Obsolete("BitmapEffects are deprecated and no longer function.  Consider using Effects where appropriate instead.")]
protected abstract System.Runtime.InteropServices.SafeHandle CreateUnmanagedEffect ();

abstract member CreateUnmanagedEffect : unit -> System.Runtime.InteropServices.SafeHandle

[<System.Obsolete("BitmapEffects are deprecated and no longer function.  Consider using Effects where appropriate instead.")>]
[<System.Security.SecurityCritical>]
abstract member CreateUnmanagedEffect : unit -> System.Runtime.InteropServices.SafeHandle

[<System.Obsolete("BitmapEffects are deprecated and no longer function.  Consider using Effects where appropriate instead.")>]
abstract member CreateUnmanagedEffect : unit -> System.Runtime.InteropServices.SafeHandle

Protected MustOverride Function CreateUnmanagedEffect () As SafeHandle

Devoluciones

SafeHandle

Identificador al clon del efecto no administrado.

Atributos

ObsoleteAttribute SecurityCriticalAttribute

Ejemplos

En el ejemplo siguiente se muestra una invalidación del CreateUnmanagedEffect método .

unsafe protected override SafeHandle CreateUnmanagedEffect()
{
    const uint CLSCTX_INPROC_SERVER = 1;
    Guid IID_IUnknown = new Guid("00000000-0000-0000-C000-000000000046");
    Guid guidEffectCLSID = new Guid("84CF07CC-34C4-460f-B435-3184F5F2FF2A");
    SafeHandle wrapper = BitmapEffect.CreateBitmapEffectOuter();

    COMSafeHandle unmanagedEffect;
    uint hresult = Ole32Methods.CoCreateInstance(
                        ref guidEffectCLSID,
                        wrapper.DangerousGetHandle(),
                        CLSCTX_INPROC_SERVER,
                        ref IID_IUnknown,
                        out unmanagedEffect);
    InitializeBitmapEffect(wrapper, unmanagedEffect);
    if (0 == hresult) return wrapper;
    throw new Exception("Cannot instantiate effect. HRESULT = " + hresult.ToString());
}

<SecurityPermissionAttribute(SecurityAction.Demand, Flags := SecurityPermissionFlag.UnmanagedCode)>
Protected Overrides Function CreateUnmanagedEffect() As SafeHandle
    Const CLSCTX_INPROC_SERVER As UInteger = 1
    Dim IID_IUnknown As New Guid("00000000-0000-0000-C000-000000000046")
    Dim guidEffectCLSID As New Guid("84CF07CC-34C4-460f-B435-3184F5F2FF2A")
    Dim wrapper As SafeHandle = BitmapEffect.CreateBitmapEffectOuter()

    Dim unmanagedEffect As COMSafeHandle
    Dim hresult As UInteger = Ole32Methods.CoCreateInstance(guidEffectCLSID, wrapper.DangerousGetHandle(), CLSCTX_INPROC_SERVER, IID_IUnknown, unmanagedEffect)
    InitializeBitmapEffect(wrapper, unmanagedEffect)
    If 0 = hresult Then
        Return wrapper
    End If
    Throw New Exception("Cannot instantiate effect. HRESULT = " & hresult.ToString())
End Function