BitmapEffect.CreateUnmanagedEffect Méthode
Définition
Important
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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.SafeHandleProtected MustOverride Function CreateUnmanagedEffect () As SafeHandleRetours
Handle vers le clone d'effet non managé.
- Attributs
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