BitmapEffect.CreateUnmanagedEffect Méthode

Définition

Espace de noms:

System.Windows.Media.Effects

Assembly:

PresentationCore.dll

Attention

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

En cas de substitution dans une classe dérivée, crée un clone de l'effet non managé.

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

Retours

SafeHandle

Handle vers le clone d'effet non managé.

Attributs

ObsoleteAttribute SecurityCriticalAttribute

Exemples

L’exemple suivant illustre une substitution de la CreateUnmanagedEffect méthode.

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